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US-12617269-B2 - Working vehicle

US12617269B2US 12617269 B2US12617269 B2US 12617269B2US-12617269-B2

Abstract

A working vehicle includes a machine body frame to which an engine is fixed, a front axle case that supports an axle of a front wheel and is rockable about a rocking shaft, a suspension device that absorbs vibration transmitted from the front axle case to the machine body frame, and a support member that is fixed to the machine body frame so as to be located below the engine, supports the rocking shaft, and defines a routing space in which a linear member (first hose, second hose extending in a front-rear direction can be routed between the support member and the engine.

Inventors

  • Asuka Yamazaki
  • Kazuki Matsumoto
  • Shunya KIYOKAWA

Assignees

  • KUBOTA CORPORATION

Dates

Publication Date
20260505
Application Date
20230728
Priority Date
20221031

Claims (18)

  1. 1 . A working vehicle comprising: a machine body frame to which an engine is fixed; a front axle case that supports an axle of a front wheel and is rockable about a rocking shaft; a buffer device that absorbs vibration transmitted from the front axle case to the machine body frame; and a support member that is fixed to the machine body frame so as to be located below the engine, supports the rocking shaft, and defines a routing space in which a linear member extending in a front-rear direction can be routed between the support member and the engine.
  2. 2 . The working vehicle according to claim 1 , wherein the engine includes a recess formed in a lower surface so as to extend in the front-rear direction, and the routing space includes a first routing space defined by the recess and the support member.
  3. 3 . The working vehicle according to claim 2 , wherein the linear member includes a first hose connected to a steering cylinder provided in the front axle case from a rear side of the engine, and the first hose is routed in the first routing space.
  4. 4 . The working vehicle according to claim 2 , wherein a drive transmission shaft that transmits a driving force from the engine to the axle is disposed below the support member.
  5. 5 . The working vehicle according to claim 4 , further comprising a cover portion fixed to the support member and covering the drive transmission shaft from below.
  6. 6 . The working vehicle according to claim 3 , wherein a drive transmission shaft that transmits a driving force from the engine to the axle is disposed below the support member.
  7. 7 . The working vehicle according to claim 6 , further comprising a cover portion fixed to the support member and covering the drive transmission shaft from below.
  8. 8 . The working vehicle according to claim 1 , wherein the routing space includes a second routing space defined by a side surface of the engine, an inner surface of the machine body frame facing the side surface, and the support member.
  9. 9 . The working vehicle according to claim 8 , wherein the buffer device includes a buffer cylinder, the linear member includes a second hose connected to the buffer cylinder from a rear side of the engine, and the second hose is routed in the second routing space.
  10. 10 . The working vehicle according to claim 9 , wherein a drive transmission shaft that transmits a driving force from the engine to the axle is disposed below the support member.
  11. 11 . The working vehicle according to claim 10 , further comprising a cover portion fixed to the support member and covering the drive transmission shaft from below.
  12. 12 . The working vehicle according to claim 8 , wherein a drive transmission shaft that transmits a driving force from the engine to the axle is disposed below the support member.
  13. 13 . The working vehicle according to claim 12 , further comprising a cover portion fixed to the support member and covering the drive transmission shaft from below.
  14. 14 . The working vehicle according to claim 1 , further comprising a rocking member to which the front axle case is fixed, the rocking member being supported to be rockable about the rocking shaft with respect to the support member, wherein the rocking member includes a guide groove portion formed on an upper surface so as to extend in the front-rear direction, the guide groove portion being capable of guiding the linear member.
  15. 15 . The working vehicle according to claim 14 , wherein a drive transmission shaft that transmits a driving force from the engine to the axle is disposed below the support member.
  16. 16 . The working vehicle according to claim 15 , further comprising a cover portion fixed to the support member and covering the drive transmission shaft from below.
  17. 17 . The working vehicle according to claim 1 , wherein a drive transmission shaft that transmits a driving force from the engine to the axle is disposed below the support member.
  18. 18 . The working vehicle according to claim 17 , further comprising a cover portion fixed to the support member and covering the drive transmission shaft from below.

Description

TECHNICAL FIELD The present invention relates to a technique of a working vehicle. BACKGROUND ART Conventionally, a technique of a working vehicle is known. For example, Patent Literature 1 describes such a technique. Patent Literature 1 describes a tractor. In the tractor, a driving force of an engine is shifted by a transmission shift device in a transmission case, and is transmitted to an axle in a front axle case through a front wheel drive shaft disposed below a machine body. The front axle case is rockably supported with respect to the machine body by a case rocking support portion (suspension device). In the tractor as described above, a cylinder using hydraulic pressure may be provided in the suspension device, the front axle case, or the like. In this case, it is required to suitably route a linear member such as a hose for feeding oil to the cylinder. CITATION LIST Patent Literature Patent Literature 1: JP 3155738 B2 SUMMARY OF INVENTION Technical Problem One aspect of the present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide a working vehicle capable of suitably routing a liner member. Solution to Problem The problem to be solved by one aspect of the present disclosure is as described above, and means for solving the problem will be described below. A working vehicle according to one aspect of the present disclosure includes: a machine body frame to which an engine is fixed; a front axle case that supports an axle of a front wheel and is rockable about a rocking shaft; a buffer device that absorbs vibration transmitted from the front axle case to the machine body frame; and a support member that is fixed to the machine body frame so as to be located below the engine, supports the rocking shaft, and defines a routing space in which a linear member extending in a front-rear direction can be routed between the support member and the engine. According to one aspect of the present disclosure, the routing of the linear member can be suitably performed. The engine according to one aspect of the present disclosure includes a recess formed in a lower surface so as to extend in the front-rear direction, and the routing space includes a first routing space defined by the recess and the support member. According to one aspect of the present disclosure, the linear member can be routed using the recess formed in the lower surface of the engine. The linear member according to one aspect of the present disclosure includes a first hose connected to a steering cylinder provided in the front axle case from a rear side of the engine, and the first hose is routed in the first routing space. According to one aspect of the present disclosure, the routing of the first hose can be suitably performed. The routing space according to one aspect of the present disclosure includes a second routing space defined by a side surface of the engine, an inner surface of the machine body frame facing the side surface, and the support member. According to one aspect of the present disclosure, the linear member can be routed using the second routing space formed on the side of the engine. The buffer device according to one aspect of the present disclosure includes a buffer cylinder, the linear member includes a second hose connected to the buffer cylinder from a rear side of the engine, and the second hose is routed in the second routing space. According to one aspect of the present disclosure, the routing of the second hose can be suitably performed. A working vehicle according to one aspect of the present disclosure further includes a rocking member to which the front axle case is fixed, the rocking member being supported to be rockable about the rocking shaft with respect to the support member, in which the rocking member includes a guide groove portion formed on an upper surface so as to extend in the front-rear direction, the guide groove portion being capable of guiding the linear member. According to one aspect of the present disclosure, the linear member can be routed using the guide groove portion formed on the upper surface of the rocking member. In the working vehicle according to one aspect of the present disclosure, a drive transmission shaft that transmits a driving force from the engine to the axle is disposed below the support member. According to one aspect of the present disclosure, the linear member can be protected. The working vehicle according to one aspect of the present disclosure further includes a cover portion fixed to the support member and covering the drive transmission shaft from below. According to one aspect of the present disclosure, the cover portion covering the drive transmission shaft can be fixed using the support member. Advantageous Effects of Invention According to one aspect of the present disclosure, an assembling error of a constant velocity joint can be absorbed, and space saving can be achieved. BRIEF DESCRIPTION OF DRAWI