JP5143519B2 - Crawler tension adjusting device for crawler traveling device - Google Patents

Description

  The present invention relates to a crawler tension adjusting device for a crawler traveling device provided with a grounding roller rotatably positioned on one lateral side of a track frame.

As the above-described crawler tension device, the one described in Patent Document 1 was first developed.
The crawler tension adjusting device described in Patent Document 1 includes a bracket that is slidably inserted back and forth at the rear end of a track frame, and a tension ring that is pivotally supported by the bracket.
The tension wheel adjusts the tension of the crawler belt by moving the bracket by screw feed by rotating the operation shaft.
In the crawler tension adjusting device described in Patent Document 1, a crawler belt is provided with a support shaft that extends laterally from the bracket, and the tension wheel is supported on the extended end side of the support shaft. Is placed on one side of the track frame where the rolling wheels for grounding are located.

JP-A-2005-335614 (paragraph [0019], FIG. 3)

  When a strong tension is generated on the crawler belt during turning or the like, if a large deformation occurs in a support member such as a support shaft of the tension ring, the tension ring is displaced and the crawler belt is easily detached. For this reason, it is necessary to support the tension ring firmly so that even if a strong tension is generated on the crawler belt, the tension ring does not shift. In the conventional crawler tension adjusting device described above, the support shaft of the tension ring is supported only on one side of the tension ring, and if the tension ring is supported firmly, the support shaft becomes thicker and the weight is increased. It was increasing.

  An object of the present invention is to provide a crawler tension adjusting device for a crawler traveling device, which can be obtained in a light weight while being able to firmly support a tension ring.

In the first invention,
A grounding wheel rotatably provided on one side of the track frame;
A guide member supported by the track frame on one lateral side where the grounding wheel of the track frame is located;
A tension adjusting frame supported by the guide member so as to be slidable in the longitudinal direction of the track frame;
A tension ring that is rotatably supported by a ring body support portion of the tension adjustment frame and supports the crawler belt;
A tension adjusting mechanism that is provided across the guide member and the tension adjusting frame and that slides the tension adjusting frame with respect to the guide member;
A support member for supporting the tension adjusting mechanism on the guide member ,
The ring body support part is configured in a forked shape that supports the tension ring on both sides,
The track frame is provided with a guide mounting portion for supporting a crawler guide that acts to prevent the crawler belt from coming off,
The guide mounting portion is provided with a support portion that supports the tension adjusting frame ,
The guide attachment portion is connected to the tension adjustment frame via a mediating member,
The support member is provided at a position overlapping the mediation member in the front-rear direction .

  According to the configuration of the first aspect of the present invention, the tension member is supported on both sides by the guide member positioned on one side of the track frame where the grounding wheel of the track frame is located. The tensioning ring can be positioned on one side of the track frame where the grounding wheel is positioned so that the crawler belt is properly wound. As a result, the support shaft of the tension ring is supported on both sides of the tension ring, and the support shaft of the tension ring, the tension adjustment frame, etc. are more compact than conventional ones, and the crawler belt Even if a strong tension is generated, the tension ring can be firmly supported so as not to move.

  Therefore, it is possible to obtain a crawler tension adjusting device that achieves weight reduction from the surface of the tension ring support structure while firmly supporting the tension ring so that a situation such as the crawler belt coming off does not easily occur.

By the way, the guide mounting portion has excellent strength because it supports the crawler guide. Thereby, according to the structure of this 1st invention, a tension | tensile_strength adjustment frame can be firmly supported using a guide attaching part for a support means.
Therefore, according to the first aspect of the present invention, a crawler tension adjusting device capable of smoothly adjusting the tension of the crawler belt by firmly supporting the tension adjusting frame is obtained with a simple structure using the guide mounting portion as the supporting means. be able to.
In the second invention,
A grounding wheel rotatably provided on one side of the track frame;
A guide member supported by the track frame on one lateral side where the grounding wheel of the track frame is located;
A tension adjusting frame supported by the guide member so as to be slidable in the longitudinal direction of the track frame;
A tension ring that is rotatably supported by a ring body support portion of the tension adjustment frame and supports the crawler belt;
A tension adjusting mechanism that is provided across the guide member and the tension adjusting frame and that slides the tension adjusting frame with respect to the guide member;
A support member for supporting the tension adjusting mechanism on the guide member;
A crawler guide that acts to prevent the crawler belt from coming off;
A guide mounting portion provided on the track frame and supporting the crawler guide,
The guide mounting portion is connected to the tension adjustment frame via a mediating member, and supports the tension adjustment frame .
The support member is provided at a position overlapping the mediation member in the front-rear direction .
Et al. Is,
The intermediary member is preferably composed of a plate-like member.
Also,
It is preferable that the guide attachment portion is provided below the tension adjustment frame and supports the tension adjustment frame from below .
Also,
Comprising a plurality of said ground wheels,
The guide mounting portion in the longitudinal direction, it is preferable that are located between said ground rolling wheel of the last positions of the plurality of the ground track roller and said ground rolling wheel of the previous neighbor.
Et al. Is,
It is preferable that the support member is fixed over an upper surface and a side surface of the guide member.
Also,
It is preferable that the ring body support portion is provided with a bifurcated shaft support fork that supports the tension ring on both lateral sides and a reinforcing rib attached to the outer periphery of the shaft support fork.
further,
It is preferable that the reinforcing rib is provided on the shaft support fork in parallel in two upper and lower stages.
further,
The tip of the tension adjusting frame is preferably fixed to the upper reinforcing rib in a state along the lower surface of the upper reinforcing rib.
further,
A tension adjusting mechanism that is provided across the guide member and the tension adjustment frame and adjusts the sliding of the tension adjustment frame with respect to the guide member;
It is preferable that the tension adjusting mechanism is provided so that an end of the tension adjusting frame is positioned between the upper-side reinforcing rib and the lower-side reinforcing rib.
further,
It is preferable that a locking member is provided over the upper reinforcing rib and the lower reinforcing rib, and the end is locked to the locking member.
Also,
It is preferable that the guide member slides and guides the tension adjusting frame so that the tension ring rises with respect to the track frame as the tension ring moves away from the guide member.
As for the load of the tension ring by the crawler belt, the tension generated in the part located on the upper side of the crawler belt and oriented along the track frame is located below the tension ring. The resultant force with the tension generated in the portion inclined with respect to the track frame is applied to the tension ring as the tension of the crawler belt.
With this configuration, the direction of the load applied to the tension ring by the tension of the crawler belt is a direction along or close to the direction in which the tension adjustment frame is guided by the guide member and moves, and the guide member and the tension adjustment frame The tension adjustment frame can be slidably adjusted while preventing the twist between the two.
Accordingly, it is possible to obtain a crawler tension adjusting device that is less likely to be twisted between the guide member and the tension adjusting frame and can perform the tension adjustment smoothly and lightly.
Also,
Comprising a plurality of said ground wheels,
In a side view, it is preferable that a part of the tension ring and a part of the grounding wheel at the rearmost position among the plurality of grounding wheels overlap.

Also,
It is preferable that the tension adjusting mechanism is provided across the guide member and the tension adjusting frame so as to be disposed on the opposite side of the tension adjusting frame from the side where the track frame is located.

  According to this configuration, the tension adjusting mechanism can be operated from the side opposite to the side where the track frame is positioned with respect to the tension adjusting frame without being damaged by the track frame.

  Therefore, it is possible to obtain a crawler tension adjusting device with good operability so that the tension adjustment mechanism can be operated without any trouble in the operation of the track frame and the tension adjustment can be performed easily and efficiently.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a working machine provided with a crawler tension adjusting device A according to an embodiment of the present invention. As shown in this figure, this working machine is configured to be self-propelled by a pair of left and right crawler traveling devices 1, 1 and has a driving unit equipped with a driver seat 2, and this traveling machine body A cutting unit 10 connected to the front part of the machine body frame 3, and a threshing device 4 and a grain tank 5 provided side by side in the machine body lateral direction on the rear side of the machine body frame 3.

This machine harvests rice and wheat.
That is, the cutting unit 10 includes a cutting unit frame 11 that is connected to the front portion of the machine body frame 3 so as to be swingable up and down, and the cutting unit frame 11 is swung up and down by the hydraulic cylinder 12. The weeding tool 13 located side by side in the horizontal direction of the body at the front end of the mowing unit 10 moves up and down into a descending work state in which the weeding tool 13 is lowered near the ground, and an ascending non-working state in which the weeding tool 13 is elevated from the ground.

  When the traveling machine body travels with the mowing unit 10 in the descending work state, the mowing part 10 is a part of the plurality of pulling devices 14 in which the planted cereals to be harvested are arranged in the lateral direction of the machine body by the weeding tools 13. Introduced into the pulling device 14 corresponding to the grass tool 13 to cause the pulling processing, the planted cereals that are raised and processed by the pulling device 14 are cut by the clipper-shaped cutting device 15, and the cutting device is cut. 15 is fed by the feeding device 16 to the start end of the threshing feed chain 4a of the threshing device 4.

  The threshing device 4 nips and conveys the stock side of the harvested cereal rice cake in the rearward direction of the machine body by the threshing feed chain 4a, and supplies the tip side of the harvested cereal rice cake to the handling room (not shown) for threshing treatment. The grain tank 5 collects and stores the threshed grains conveyed from the threshing device 4.

  FIG. 2 is a side view of the crawler traveling device 1 on the left side. FIG. 3 is a plan view of the crawler traveling device 1 on the left side. The crawler traveling device 1 on the right side has the same configuration as the crawler traveling device 1 on the left side, and illustration of the crawler traveling device 1 on the right side is omitted. As shown in these drawings, the crawler traveling device 1 includes a track frame 22 connected to the body frame 3 via a pair of front and rear support arms 20, 21, and a transmission case ( And a crawler drive wheel 23 that can be driven and rotated supported by the body frame 3 via a track frame 22 and a track frame 22 arranged side by side in the lateral direction of the track frame 22 that is located laterally outside the traveling body. Eight free grounding wheels 24, 25, 26 supported on the frame 22, and the grounding wheel located on the rearmost end side of the track frame among the eight grounding wheels 24, 25, 26. 26, a tension ring 27 provided at the rear end of the track frame 22 so as to be located behind the track frame 26 and supported by the body frame 3 above the track frame 22. A pair of freely movable carrier rollers 28 and 28, and the crawler driving wheel 23, the eight grounding rollers 24, 25 and 26, the tension wheel 27, and the pair of front and rear carrier rollers 28, 28 and a rubber crawler belt 29 wound around the belt 28.

The front support arm 20 includes a rotation support shaft 20a that rotatably connects the base portion of the support arm 20 to the body frame 3, and a side of the rotation support shaft 20a to which the support arm 20 is connected. It is interlocked with the cylinder rod 31a of the hydraulic cylinder 31 via an interlocking arm 30 that is provided at the opposite end so as to be integrally rotatable.
That is, the front support arm 20 is swung up and down with respect to the body frame 3 around the axis of the rotation support shaft 20a by the hydraulic cylinder 31, and the front end side of the track frame 22 is moved with respect to the body frame 3. Move up and down.

The support arm 21 on the rear side includes a rotation support shaft 21a that rotatably connects a base portion of the support arm 21 to the body frame 3, and a side to which the support arm 21 of the rotation support shaft 21a is connected. Is interlocked with the cylinder rod 33a of the hydraulic cylinder 33 through an interlocking arm 32 provided at the opposite end so as to be rotatable together. The free end side of the rear support arm 21 is connected to the rear end side of the track frame 22 via a cancel link 34.
That is, the rear support arm 21 is swung up and down with respect to the machine body frame 3 around the axis of the rotation support shaft 21 a by the hydraulic cylinder 33, and the rear end of the track frame 22 through the cancel link 34. The side is moved up and down with respect to the body frame 3.

That is, when the pair of front and rear support arms 20 and 21 in the left and right crawler traveling devices 1 and 1 are operated to swing, the traveling machine body is inclined in the lateral direction and the front and rear direction with respect to the ground.
That is, the pair of front and rear support arms 20 and 21 in one of the left and right crawler traveling devices 1 are both raised or lowered, and the lift and lower strokes of the pair of front and rear support arms 20 and 21 are the same. The track frame 22 in one of the left and right crawler traveling devices 1 is raised or lowered in parallel to the body frame 3, and one end in the lateral direction of the traveling body is crawler traveling on the other end side. The grounding point by the apparatus 1 is moved up and down with respect to the ground using the swinging fulcrum.

  Ascending or descending stroke of the support arms 20 and 21 in the left and right crawler traveling devices 1 so that one of the front support arm 20 and the rear support arm 21 in the left and right crawler traveling devices 1 swings up or down. Or the track frame 22 in the left and right crawler traveling devices 1 swings up and down with respect to the body frame 3 with the ground contact point on the front end side as a swing fulcrum. Alternatively, it swings up and down with respect to the body frame 3 with the grounding point on the rear end side as a swing fulcrum, and one end in the front-rear direction of the traveling body moves up and down with respect to the ground with the other end as a swing fulcrum. .

  Next, of the eight grounding wheels 24, 25, 26, the grounding wheel 26 positioned closest to the rear end side of the track frame is referred to as the last grounding wheel 26, and the eight grounding wheels 24, 25 26, the grounding wheel 25 located adjacent to the last grounding wheel 26 in front of the last grounding wheel 26 will be referred to as a rear grounding wheel 25. That is, the last grounding wheel 26 corresponds to the “grounding wheel at the rearmost position” according to the present invention, and the rear grounding wheel 25 corresponds to the “front adjacent grounding wheel” according to the present invention.

  The rear grounding wheel 25 and the last grounding wheel 26 are supported by the track frame 22 so as to be freely rotatable, and cannot be moved up and down with respect to the track frame 22.

  Of the eight grounding wheels 24, 25, 26, the grounding wheel 24 except the last grounding wheel 26 and the rear grounding wheel 25 is composed of two adjacent grounding wheels 24, 24. The two grounded wheels 24, 24 of each wheeling group are grouped so as to form one wheeling group, and are supported by the track frame 22 in a state of being connected to the track frame 22 by one balance connecting member 40. Has been.

  As shown in FIGS. 3 and 4, each of the balance connecting members 40 described above is rotatably supported by the track frame 22 via a connecting shaft 41 positioned at an intermediate portion thereof. One grounding wheel 24 of the two grounding wheels 24, 24 forming each wheel group is freely rotatable to a portion located on the front end side of the connecting shaft 41 of the balance connecting member 40. The other grounding wheel 24 is supported on a portion of the balance connecting member 40 located on the rear end side of the connecting shaft 41 so as to be freely rotatable.

  Thus, among the eight grounding wheels 24, 25, 26, the grounding wheels 24 excluding the last grounding wheel 26 and the rear grounding wheel 25, and forming each of the above-described wheeling groups. The two grounding wheels 24, 24 are attached to the track frame 22 by a balance connecting member 40. When the balance connecting member 40 swings, the track frame has the axis of the connecting shaft 41 as a swing fulcrum. It moves up and down against 22.

  The crawler traveling device 1 includes a crawler guide 42 provided corresponding to each of the above-described roller group, and a crawler guide 43 provided corresponding to the rear grounding wheel 25 and the last grounding wheel 26. .

  As shown in FIG. 2 and FIG. 4, the crawler guides 42 corresponding to the respective roller groups are arranged between a pair of left and right guide wheel bodies of one grounded roller 24 of the wheel group and the other ground roller. A rod-shaped guide body 42a positioned between a pair of left and right guide wheel bodies of the wheel 24, and a connecting rod 42b for connecting the guide body 42a to the balance connecting member 40; The guide main body 42a engages the left and right core metal projections 29a, 29a of the crawler belt 29 to prevent the crawler belt 29 from coming off. The crawler guide 42 corresponding to each wheel group is produced by integrally casting the guide body 42a and the connecting rod 42b together with the balance connecting member 40.

  As shown in FIG. 4, the crawler guide 43 corresponding to the last grounding wheel 26 and the rear grounding wheel 25 is between the left and right guide wheel bodies of the rear grounding wheel 25 and the last grounding wheel. 26, a rod-shaped guide main body 43a located between a pair of left and right guide wheel bodies, and a connecting rod 43b for connecting the guide main body 43a to a guide mounting portion 44 provided in the track frame 22. The guide main body 43a engages the left and right core metal projections 29a of the crawler belt 29 to prevent the crawler belt 29 from coming off. The crawler guide 43 is manufactured by integrally casting the guide main body 43a and the connecting rod 43b.

  The guide mounting portion 44 of the track frame 22 is configured by attaching a metal block to the lateral side surface of the track frame 22. The guide attachment portion 44 has three connection bolts 45 arranged on the end of the guide attachment portion 44 in a triangular arrangement in the vertical direction and the front-rear direction of the track frame 22, thereby connecting the crawler guide 43. 43b is supported.

  The crawler traveling device 1 includes a crawler tension adjusting device A according to an embodiment of the present invention provided at the rear portion of the track frame 22.

  FIG. 3 shows the structure of the crawler tension adjusting device A according to this embodiment in plan view. FIG. 4 shows the structure of the crawler tension adjusting device A according to this embodiment in a side view. FIG. 5 is a longitudinal plan view of the crawler tension adjusting device A according to the present embodiment. FIG. 6 is a longitudinal side view of the crawler tension adjusting device A according to the present embodiment. As shown in these drawings, the crawler tension adjusting device A according to the present embodiment includes the tension ring 27, a tension adjustment frame 51 that supports the tension ring 27 by a ring body support portion 50, and a tension adjustment frame 51. A guide member 52 that supports the tension adjusting frame 51, a locking portion 53a (corresponding to a “locking member” according to the present invention) protruding from the lateral side portion of the ring body support portion 50, and the guide member 52 A tension adjusting shaft 55 as a “tension adjusting mechanism” attached over the provided support portion 54 (corresponding to a “support member” according to the present invention) is provided.

  The tension adjusting frame 51 includes the ring body support portion 50 and a frame main body 51 a made of a square steel pipe having one end connected to the base of the ring body support portion 50.

  FIG. 9 is a plan view of the ring body support portion 50. FIG. 10 is a side view of the ring body support portion 50. As shown in these drawings, the ring body support portion 50 has a bifurcated shaft support fork 56 provided with a pair of shaft support holes 56a and 56a arranged on both sides of the tension ring 27. It is configured with. As shown in FIG. 5, the ring body support portion 50 supports the support shaft 27 a of the tension ring 27 on both sides of the tension ring 27 by the shaft support fork 56. That is, the tension ring 27 is supported on both lateral sides.

  The guide member 52 is disposed on the same lateral side as the lateral side where the grounding wheels 24, 25, 26 of the track frame 22 are located, and a pair of front and rear support arm portions 22 a, The tension adjusting frame 51 is disposed at an appropriate position on one side of the track frame 22, that is, at a position where the crawler belt 29 is appropriately wound around the tension ring 27.

As shown in FIGS. 6, 7, and 8, the end of the guide member 52 on the side where the tension adjusting frame 51 protrudes and the tension adjusting frame 51 are located above the guide mounting portion 44 of the track frame 22. It is received and supported from below by the support portion 44a via a mediating member 57 having a lower end placed on the support portion 44a formed of an end surface. The mediating member 57 includes an upper sheet metal member 57a whose one side receives and acts on the lower surfaces of the guide member 52 and the tension adjusting frame 51, and a lower sheet metal member interposed between the upper sheet metal member 57a and the support portion 44a. 57b. That is, the upper sheet metal member 57a and the lower sheet metal member 57b correspond to the “plate member” according to the present invention.

  The tension adjusting frame 51 is slidably supported by the guide member 52 when the frame main body 51 a is slidably fitted in the guide member 52, and is slid by the inner surface of the guide member 52. It is guided and slides in the front-rear direction of the track frame 22. The tension adjusting frame 51 is slid in a state where it rises with respect to the track frame 22 as the tension ring 27 moves away from the guide member 52 by setting the sliding direction according to the mounting direction of the guide member 52. In other words, the tension adjustment frame 51 is located above the tension ring 27 of the crawler belt 29 and is located along the track frame 22, and the tension adjustment frame 51 is positioned below the tension ring 27 to be tracked. It slides along a direction close to the direction of the load applied to the tension ring 27 by the tension of the portion inclined to the frame 22.

  The tension adjustment shaft 55 is constituted by a screw shaft that is screwed into a female screw of an adjustment shaft insertion hole provided in the support portion 54 of the guide member 52. The tension adjusting frame 51 is slidably adjusted with respect to the guide member 52 by moving in the front-rear direction and pushing or pulling on the engaging portion 53 a of the ring body support portion 50. The tension adjusting shaft 55 is disposed on the opposite side of the tension adjusting frame 51 from the side on which the track frame 22 is located, and is not affected by the operation of the track frame 22 from the lateral outer side of the traveling machine body of the crawler traveling device 1. Can be operated.

  In short, the crawler tension adjusting device A adjusts the movement while adjusting the tension adjusting shaft 55 by sliding the tension adjusting frame 51 between the guide member 52 and the mediating member 57 by the tension adjusting shaft 55 being rotated. At this time, the tension adjustment frame 51 slides along a direction close to the direction of the load applied to the tension ring 27 due to the tension of the crawler belt 29, and the twist adjustment frame 51 and the guide member 52 are unlikely to be twisted. Slide in state. Then, the tension wheel 27 is moved and adjusted to the rear side with respect to the track frame 22 to press the crawler belt 29 to the rear side of the traveling device, thereby adjusting the tension force of the crawler belt 29 to the increasing side. Alternatively, the tension ring 27 is adjusted to move forward with respect to the track frame 22 to reduce the pressure on the crawler belt 29, thereby adjusting the tension of the crawler belt 29 to the decreasing side.

  As shown in FIGS. 9 and 10, the ring body support portion 50 includes the shaft support fork 56 and the locking portion 53 a, and a pair of upper and lower reinforcing ribs 58 provided on the outer peripheral side of the shaft support fork 56. 58 and a second locking portion 53b provided on the opposite side of the shaft fork 56 from the side where the locking portion 53a is located. The shaft support fork 56, the locking portion 53a, the reinforcing rib 58, and the second locking portion 53b are integrally cast by lost wax casting.

  The second locking portion 53b attaches the tension adjusting shaft 55 when the tension adjusting frame 51 is mounted on the crawler tension adjusting device A of the crawler traveling device 1 on the right side.

[Another Example]
The object of the present invention can also be achieved by adopting a configuration in which the tension adjusting frame 51 is slidably adjusted by a grease cylinder instead of the above-described embodiment. Accordingly, the tension adjusting shaft 55, the grease cylinder, and the like are collectively referred to as a tension adjusting mechanism 55.

Side view of work equipment Side view of crawler traveling device Top view of crawler traveling device Side view of the crawler traveling device rear Longitudinal plan view of crawler tension adjusting device Longitudinal side view of crawler tension adjusting device Plan view of claw guide mounting structure Perspective view of claw guide mounting part and mediating member Plan view of the ring body support Side view of ring support

22 Track frame 24 Grounding wheel 25 Last grounding wheel (grounding wheel at the last position)
26 Rear grounding wheel (grounding wheel next to the front)
27 Tension wheel 29 Crawler belt 43 Crawler guide 44 Guide attachment portion 44a Support portion 50 Ring body support portion 51 Tension adjustment frame 52 Guide member 53a Locking portion (locking member)
54 Supporting part (supporting member)
55 Tension adjusting mechanism 56 Axial support fork 57 Intermediary member 57a Upper sheet metal member (plate-like member)
57b Lower sheet metal member (plate-like member)
58 Reinforcing ribs

Claims (14)

A grounding wheel rotatably provided on one side of the track frame;
A guide member supported by the track frame on one lateral side where the grounding wheel of the track frame is located;
A tension adjusting frame supported by the guide member so as to be slidable in the longitudinal direction of the track frame;
A tension ring that is rotatably supported by a ring body support portion of the tension adjustment frame and supports the crawler belt;
A tension adjusting mechanism that is provided across the guide member and the tension adjusting frame and that slides the tension adjusting frame with respect to the guide member;
A support member for supporting the tension adjusting mechanism on the guide member ,
The ring body support part is configured in a forked shape that supports the tension ring on both sides,
The track frame is provided with a guide mounting portion for supporting a crawler guide that acts to prevent the crawler belt from coming off,
The guide mounting portion is provided with a support portion that supports the tension adjusting frame ,
The guide attachment portion is connected to the tension adjustment frame via a mediating member,
The crawler tension adjusting device of the crawler traveling device, wherein the support member is provided at a position overlapping with the mediating member in the front-rear direction . A grounding wheel rotatably provided on one side of the track frame;
A guide member supported by the track frame on one lateral side where the grounding wheel of the track frame is located;
A tension adjusting frame supported by the guide member so as to be slidable in the longitudinal direction of the track frame;
A tension ring that is rotatably supported by a ring body support portion of the tension adjustment frame and supports the crawler belt;
A tension adjusting mechanism that is provided across the guide member and the tension adjusting frame and that slides the tension adjusting frame with respect to the guide member;
A support member for supporting the tension adjusting mechanism on the guide member;
A crawler guide that acts to prevent the crawler belt from coming off;
A guide mounting portion provided on the track frame and supporting the crawler guide,
The guide mounting portion is connected to the tension adjustment frame via a mediating member, and supports the tension adjustment frame .
The crawler tension adjusting device of the crawler traveling device, wherein the support member is provided at a position overlapping with the mediating member in the front-rear direction . The mediation member crawler tensioning device of the crawler traveling device according to claim 1 or 2 is composed of a plate-like member. The crawler tension adjusting device for a crawler traveling device according to any one of claims 1 to 3 , wherein the guide attaching portion is provided below the tension adjusting frame and supports the tension adjusting frame from below. Comprising a plurality of said ground wheels,
The guide mounting portion in the longitudinal direction, from claim 1 are located between the ground rolling wheel of the last positions of the plurality of the ground track roller and said ground rolling wheel of the previous neighboring 4 The crawler tension adjusting device of the crawler traveling device according to any one of the above. The crawler tension adjusting device for a crawler traveling device according to any one of claims 1 to 5, wherein the support member is fixed over an upper surface and a side surface of the guide member. The ring body supporting portion, the tension wheel and journalled fork bifurcated shape that supports at both lateral sides, and a reinforcing rib mounted on the outer periphery of the shaft supporting fork, from claim 1 is provided 6 The crawler tension adjusting device of the crawler traveling device according to any one of the above. The crawler tension adjusting device for a crawler traveling device according to claim 7 , wherein the reinforcing rib is provided on the shaft support fork in two vertical stages. The crawler tension adjusting device of the crawler traveling device according to claim 8 , wherein a tip end portion of the tension adjusting frame is fixed to the upper reinforcing rib in a state along the lower surface of the upper reinforcing rib. A tension adjusting mechanism that is provided across the guide member and the tension adjustment frame and adjusts the sliding of the tension adjustment frame with respect to the guide member;
The tension adjusting mechanism according to claim 8 or 9 are provided so as to be positioned between the reinforcing ribs of said reinforcing rib and the lower end of the side where the upper side of the said tension adjusting frame A crawler tension adjusting device for a crawler traveling device. The crawler tension adjustment of the crawler traveling device according to claim 10 , further comprising: a locking member that extends between the reinforcing rib on the upper side and the reinforcing rib on the lower side, and the end is locked to the locking member. apparatus. The crawler travel device according to any one of claims 1 to 11 , wherein the guide member slides and guides the tension adjustment frame such that the tension ring rises with respect to the track frame as the tension ring moves away from the guide member. Crawler tension adjusting device. Comprising a plurality of said ground wheels,
The crawler travel according to any one of claims 1 to 12 , wherein, in a side view, a part of the tension wheel and a part of a ground contact wheel at a rearmost position among the plurality of ground contact wheels overlap. The crawler tension adjusting device of the device. The tension adjusting mechanism, the tension adjusting said arranged on the side opposite to the side where the track frame is located relative to the frame guide member and the tensioning frame and from claim 1 is provided over the 13 The crawler tension adjusting device of the crawler traveling device according to any one of the above.

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