JP3848822B2 - Airframe frame structure in crawler traveling vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crawler traveling vehicle, and in particular, it is possible to improve the workability during inspection and maintenance work by orderly arranging hydraulic pipes connecting hydraulic equipment mounted on a fuselage frame and a traveling hydraulic motor of a track frame. The present invention relates to a body frame structure in a crawler traveling vehicle.
[0002]
[Prior art]
Conventionally, in a crawler traveling vehicle such as a crawler tractor and a combiner, left and right track frames equipped with a traveling hydraulic motor at the front end are respectively provided below a fuselage frame on which hydraulic devices such as a hydraulic valve and a hydraulic pump are mounted together with an engine and a transmission. The vehicle is run by rotating the left and right crawlers wound around them.
[0003]
Between the hydraulic device and each traveling hydraulic motor, a plurality of bundled hydraulic pipes are arranged along the inner side of the body frame that is spaced apart and arranged on the left and right sides in the body traveling direction. Therefore, when removing the target hydraulic pipes that require inspection and maintenance work, other hydraulic pipes other than the hydraulic pipes must be removed at the same time. In addition, checking the oil seal at the pipe connection part and whether or not excessive external force is applied must be performed on the hydraulic pipes other than the intended purpose, resulting in reduced work efficiency. there were.
[0004]
[Problems to be solved by the invention]
The present invention was devised in the course of research and development for pursuing improvement in workability of inspection and maintenance of hydraulic pipes arranged in the course of reaching the traveling hydraulic motor in view of the actual situation as described above. The machine frame is formed into a U-shaped cross-section with the opposite surface open, and each hydraulic pipe from the hydraulic device to the traveling hydraulic motor of the track frame is effectively utilized by utilizing the U-shaped portion in the machine frame. It can be arranged neatly, only the target hydraulic pipes that require inspection and maintenance work can be removed and the work can proceed smoothly, and each hydraulic pipe is protected inside the fuselage frame, so that the fuselage frame It is an object of the present invention to provide a body frame structure in a crawler traveling vehicle that can prevent a problem that damages the hydraulic pipe even when washing mud adhering to the clog.
[0005]
[Means for Solving the Problems]
In order to solve the problem, the first technical means adopted by the present invention is that the left and right track frames equipped with traveling hydraulic motors at the front ends are respectively provided below the body frame spaced apart and arranged side by side in the traveling direction of the body. In the crawler traveling vehicle arranged, the body frame is formed in a U-shaped cross-section with each facing surface open, and a hydraulic device mounted on the body frame and a traveling hydraulic motor for the track frame are provided. hydraulic pressure parallel hydraulic pipe group connected to the hydraulic lines along the vertical wall parallel to the vertical direction, through a fixing plate which extends along the bottom wall of the machine frame inside surface horizontal direction of each body frame inner surface It is characterized in that the hydraulic pipe group is fixed to each wall with a fixing bracket so that only the target hydraulic pipe requiring maintenance work can be removed from the hydraulic pipe group .
[0006]
As a second technical means, the hydraulic equipment is mounted in a substantially central region of the body frame, and a pipe connection port disposed toward each track frame is provided in the body frame on the side. It is characterized by being connected to each.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the present invention will be described in detail based on an embodiment shown in the drawings.
In FIG. 1, reference numeral 1 denotes a crawler tractor provided with a pair of left and right crawler travel devices 2 and 2 at the lower part of a body frame 3 and 3 which are arranged side by side on the left and right in the direction of travel of the body. An engine (not shown) is mounted in a hood 4 provided at the front part on the frames 3 and 3, and a driver's seat 6 is provided in a cabin 5 provided in a substantially central part between the body frames 3 and 3. In a space extending from the rear of the driver's seat 6 to the mounting portion 7 provided at the rear of the body frame 3, a hydraulic device A described later including a working machine hydraulic pump, a working machine transmission, and the like is disposed. A three-point link mechanism 8 including a lift arm 8a, a lift cylinder 8b, and the like is disposed on the outer surface of the section 7, so that a working machine (not shown) can be mounted on the rear part of the crawler tractor 1 so as to be movable up and down. It is.
[0008]
As shown in FIGS. 2 and 4, the body frames 3 and 3 are formed in a U-shaped cross-section with the opposing surfaces open, and the footrest surfaces 9 and 9 and the fixing part B of the hydraulic device A are provided in the rear half part. As shown in FIG. 3, left and right track frames 12, 12 connected by a front cross member 10 and a rear cross member 11 are disposed on the lower surface of the body frames 3, 3. The housings 13 a and 13 a of the traveling hydraulic motors 13 and 13 are mounted on the front ends of the track frames 12 and 12 via the front cross member 10. Reference numeral 14 denotes a drive sprocket that is fitted to the traveling hydraulic motor 13 and drives the crawler to wind.
[0009]
Next, the piping configuration from the hydraulic device A to each traveling hydraulic motor 13 will be described.
4 to 6, reference numeral 15 denotes a hydraulic pipe group. The hydraulic pipe group 15 is arranged on the inner side of the body frame 3, 3 from the hydraulic device A placed and fixed on the fixing part B of the body frame 3, 3. Are connected to the traveling hydraulic motors 13 and 13 respectively.
[0010]
That is, the airframes 3 and 3 are formed in a U-shaped cross section in which the opposing surfaces 3a and 3a are opened, and the hydraulic pipe group 15 is arranged in parallel in the vertical direction along the vertical wall 3b on the inner surface of the airframe frame 3. A hydraulic pipe 15a and a hydraulic pipe 15b arranged in parallel in the horizontal direction via a fixing plate 16 extending along the bottom wall 3c of the inner surface of the fuselage frame 3, and a fixing bracket 17 on each wall 3b, 3c, 18 and the pipe connection ports 19a, 19b,... Of the hydraulic equipment A mounted in a substantially central area on the body frames 3 and 3 are formed toward the left and right track frames 12 and 12, respectively. The pipe connection ports 19a, 19b,... Are connected to the hydraulic pipes 15a, 15b disposed in the body frame 3 located on the upper side of the track frames 12, 12, respectively. To have.
[0011]
On the other hand, on the left side of the rear part of the airframe from the rear of the driver's seat 6 to the mounting portion 7 of the crawler tractor 1, as shown in FIG. 7 and FIG. When the door 21 is opened rearward through the hinge 21a, the hydraulic equipment A and the hydraulic pipe group 15 on the body frames 3 and 3 can be inspected and maintained. Since the grease gun 22 is detachably mounted on the back surface, the grease gun 22 which is indispensable when checking and maintaining the hydraulic device A and the hydraulic pipe group 15 can be always seen by opening the door 21. The location can be easily confirmed without preparing a box, a tool, etc., and smooth inspection and maintenance work can be performed.
[0012]
As described above, according to the present invention, the hydraulic pipe group 15 extending from the hydraulic equipment A on the body frames 3 and 3 to the traveling hydraulic motors 13 and 13 is arranged in parallel in the vertical direction along the vertical wall 3 b on the inner surface of the body frame 3. Since the pipe 15a and the hydraulic pipe 15b arranged in parallel in the horizontal direction along the bottom wall 3c on the inner surface of the fuselage frame 3 are arranged in an orderly manner, only the target hydraulic pipe is used when inspection and maintenance work is required. Since the hydraulic pipe group 15 is provided on the vertical wall 3b and the bottom wall 3c of the machine body frame 3, 3 having a U-shaped cross section, each of the machine bodies can be viewed in a side view. The hydraulic pipes are not exposed to the outside and have a clean appearance. Further, each hydraulic pipe is protected from the outside inside the body frame 3, 3 by the vertical wall 3 b, the bottom wall 3 c and the fixing plate 16. Like damaging the tube It is possible to prevent the condition from occurring.
[0013]
【The invention's effect】
In short, the present invention relates to a crawler traveling vehicle in which left and right track frames equipped with traveling hydraulic motors at their front ends are disposed below a body frame that is arranged side by side on the left and right sides in the traveling direction of the body. A hydraulic pipe group that forms a frame with a U-shaped cross-section with an open opposing surface and connects the hydraulic equipment mounted on the airframe and the traveling hydraulic motor of the track frame is provided on the inner surface of each airframe. It consists of hydraulic pipes parallel in the vertical direction along the vertical wall and hydraulic pipes parallel in the horizontal direction via a fixed plate extending along the bottom wall of the inner surface of the aircraft frame . as can remove only hydraulic lines objects that require maintenance, the hydraulic tube group is fixed by a fixing bracket in each wall, also the hydraulic equipment is mounted in a substantially central region of the body frame, or The pipe connection port disposed respectively toward each track frame, because respectively connected to a hydraulic pipe is disposed within the body frame of the side,
a. Since each hydraulic pipe is arranged in an orderly manner, only the target hydraulic pipes that require inspection and maintenance work can be removed, and the piping status of each hydraulic pipe can be grasped at a glance so that the work can proceed smoothly. Can do.
b. Since the hydraulic pipes are arranged inside the fuselage frame that has a U-shaped cross section with the opposite surface open, the hydraulic pipes are not exposed to the outside in a side view of the fuselage, and each hydraulic pipe has a clean appearance. Since it is protected inside the fuselage frame, there is no problem of damaging the hydraulic pipe when washing mud adhering to the fuselage frame.
c. Since the piping of the hydraulic pipes is made by using the vertical and bottom walls of the airframe frame formed in a U-shaped section as it is, the structure of the airframe is simplified due to the fact that a protective cover for the hydraulic pipes is not necessary. It is also possible to reduce the manufacturing cost.
It has a very useful novel effect.
[Brief description of the drawings]
FIG. 1A is an overall plan view of a crawler tractor.
(B) is a side view of the same as above.
(C) is a front view of the same.
(D) is a rear view of the above.
FIG. 2A is a plan view of an airframe frame having a track frame on a lower surface.
(B) is a side view of the same as above.
FIG. 3 is an exploded perspective view showing a configuration of a track frame.
FIG. 4A is a cross-sectional view of an airframe frame located on the right side in the airframe traveling direction.
(B) is sectional drawing of the body frame located in the left side of the body traveling direction.
FIG. 5 is an enlarged plan view of a main part of an airframe frame showing a hydraulic pipe group by a solid line.
FIG. 6 is an enlarged side view of a main part of an airframe frame in which a hydraulic pipe group is indicated by a solid line.
FIG. 7A is a plan view of an essential part of an open door provided on the left side in the aircraft traveling direction.
(B) is the principal part side view same as the above.
FIG. 8 is a main part front view showing the inside of the open / close door.
[Explanation of symbols]
3 Airframe 3a Opposing surface 3b Vertical wall 3c Bottom wall 12 Track frame 13 Hydraulic motor 15 for travel Hydraulic pipe (group)
19a Pipe connection port 19b Pipe connection port 19c Pipe connection port 19d Pipe connection port 19e Pipe connection port A Hydraulic equipment

Claims (2)

Left and right track frames (12), (12) equipped with traveling hydraulic motors (13), (13) at the front end, respectively , below the aircraft frames (3), (3) spaced side by side on the left and right in the aircraft traveling direction ) In the crawler traveling vehicle (1) , the body frame (3), (3) is formed into a U-shaped cross-section with the opposing surfaces open, and mounted on the body frame. The hydraulic pipe group (15) that connects (A) and the traveling hydraulic motors (13), (13) of the track frame is arranged in the vertical direction along the vertical walls (3b), (3b) on the inner surface of each body frame. the hydraulic lines in parallel (15a), and (15a), the machine frame inner surface of the bottom wall (3c), a fixed plate which extends along the (3c) (16), horizontally through the (16) It consists of hydraulic pipes (15b) and (15b) in parallel , and among the hydraulic pipe group (15) , the target hydraulic pipes (15a), (15a), (15b), (15b as) can remove only the hydraulic tube group (15) each wall (3b), to (3b), (3c), (3c) Teikanagu (17), a body frame structure of crawler traveling vehicle, characterized in that fixed by (18). The hydraulic equipment (A) is mounted in a substantially central region of the airframes (3) and (3) , and pipe connection ports (19a) and (19b) arranged toward the track frames (12) and (12) , respectively. 2) are connected to hydraulic pipes (15a), (15a), (15b), (15b) , respectively, disposed in the body frame on the side. Frame structure.

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