JPS5816953Y2 - Structure of crawler traveling device - Google Patents

Description

[Detailed description of the invention] This invention connects the left and right track frames, which are connected to the fuselage at multiple locations in the front and rear, to the axle protruding end of the axle case attached to the fuselage, with the frame positioned inside the sprocket. The present invention relates to the structure of a certain crawler traveling device.

Conventionally, in the structure of this type of crawler traveling device, there is one described in Japanese Utility Model Application Publication No. 51-57972, in which the external force acting on the sprocket is borne by the axle case.
The axle case is connected and supported by a track frame to make it strong and strong, and there are no obstacles such as track frames on the outside of the sprocket, so replacing or installing the sprocket requires work such as changing the position or posture. However, in order to connect and support the axle case with the truck frame, the axle case is attached from above and below by sandwiching it between seats and tightening with bolts, and then the seat is attached to the truck frame. Because the seat is fixed, the seat is long in the longitudinal direction of the axle case, and the seat tends to protrude outside the width of the crawler, which prevents other objects such as stones from getting in the way when the vehicle is running. This installation not only has the disadvantage that it may be damaged by collision with the seat, but also the impact force at the time of collision is transmitted to the axle through the axle case.
There is a danger that the axle may bend, and if the impact force is transmitted from the axle to the various mechanisms inside the transmission case, there is a risk that the various mechanisms inside the transmission case will be damaged. has drawbacks that can cause major damage.

The purpose of the present invention is to eliminate the above-mentioned drawbacks, and its characteristic configuration is to attach the left and right track frames connected to the fuselage at multiple locations in the front and back to the inside of the sprocket at the axle protruding end of the axle case attached to the fuselage. In the structure of the crawler traveling device in which the track frame is connected in a state where the track frame is positioned at An extended frame portion is provided at the rear end of the truck frame, with the inner side wall of the truck frame extending further back than the side wall on the outside of the vehicle body, and the axle can be inserted into the extended frame portion. A flange is provided at the axle protruding end of the axle case, and the flange has a plane parallel to the sprocket fixed to the end of the axle within the width of the crawler. The flange is connected and supported by the axle case e-truck frame by connecting the flange to the extending frame part by contacting the inner surface of the body of the extending frame part.

The effects of the features and configuration of the present invention are as follows: A flange is formed at the axle protruding end of the axle housing and the axle case;
A plane parallel to the sprocket of the flange extends rearward from the inner side wall of the rear end of the U-shaped track frame that has a U-shaped cross section and supports the rolling wheels in the center of the lateral direction. Since it is connected and fixed to the frame part, the connection and fixation structure can be configured to be thin in the longitudinal direction of the axle case, and the flange, track frame, etc. can be easily accommodated in the crawler core, and stones can be removed during running. Collisions of other objects with the flange and truck frame can be avoided as much as possible, and adverse effects on axles and the like caused by collisions of other objects can be prevented as much as possible.

Next, embodiments of the present invention will be described in detail based on the drawings.

A control section 2 is disposed at the rear of a traveling machine base equipped with a crawler traveling device 1, and a loading platform 4 is connected to the front through a hydraulic cylinder 3 so as to be freely driven and swingable around the front horizontal axis X. It is configured to transmit power from an engine 5 to the traveling device 1 through an axle case 6 and an internal transmission 1, thereby forming a transport vehicle for transporting and dumping earth and sand.

The crawler traveling device 1 includes left and right track frames 8,
A tensioning idler wheel 9 is provided at the front of each of the wheels 8, and guide wheels 10 are mounted on the shaft at intervals in the longitudinal direction, and these wheels 9, 10, . A crawler 13 is wound around a driving sprocket 12 which is pivotally supported on an axle 11 projecting from the axle case 6.

The track frames 8, 8 have the guide wheel body 10 mounted on the axis at the center in the width direction, and are melt-molded to have a substantially U-shaped cross section. The main frames 14a and 14b are connected to the main frames 14a and 14b.

A support frame 15 is connected to the support frame 14b, and a body frame 16 is connected to the support frame 15.

The track frames 8, 8 are connected to the main frame 14a on the front side of the vehicle body through an angled first mounting member 17, as shown in FIG. The frame 8 is connected with bolts 18.

The bolt holes of the first mounting member 17 are formed into round holes so that manufacturing errors and residual stress caused by bolt tightening can be absorbed in the longitudinal and lateral directions of the vehicle body.

On the other hand, the truck frames 8, 8 are connected to the main frame 14b on the rear side of the vehicle body by bolting the second mounting member 19 fixed to the truck frame 8 by welding and the main frame 14b, as shown in FIG. 20...
. . , and the bolt holes of the second mounting member 19 are formed into blank holes so that manufacturing errors and residual stress due to bolt tightening can be absorbed in the lateral direction of the vehicle body.

The axle case 6 is supported by the fuselage frame 16, and has an angled connecting member 21 connected to the front thereof, and an angled connecting member 21 fixed to the vertical support frame 15 connected to the main frame 14b on the rear side. Third mounting member 2
2 with bolts 23...

A plate 8b is fixed to the rear ends of the left and right track frames 8, 8. A side wall on the inner side of the track frame 8 extends rearward from the plate 8b for a longer time than the outer side wall. A connecting hole 24 is formed in the extending frame portion 8a to tightly fit the axle protruding side end 6a of the axle case 60, so that the extending frame portion 8a and the axle are At the same time, the flange F formed near the protruding end 6a of the axle and the extended frame portion 8a are connected with bolts 25, and the sprocket 12 is connected to the axle 11 on the outside thereof. The lower part of the axle case 6 is supported by the track frames 8, 8.

Next, a procedure for assembling the crawler traveling device 10 will be explained.

The extending frame portions 8a, 8a are connected to the axle protruding side end 6a.
, -6a, and contact the sprocket side plane F of the flange F formed near the protruding end of the axle, and temporarily tighten the bolts 25 to connect the track frames 8, 8. The axle case 6 is connected to the axle case 6.

The main frames 14a and 14b are aligned with the track frames 8 and 8 from above, and the rear main frame 14b and the track frame 88 are connected via the second mounting members 19 and 19, and the bolts 20... After tightening and connecting, the bolts 25 are fully tightened to connect the truck frames 8, 8 and the axle case 6.

Next, the front main frame 14a and the track frames 8, 8 are connected via the first mounting members 17.17, and the bolts 1
8... to connect the main frame 14a and the track frame 8.8.

Finally, connect the connecting flange 21 and the third mounting member 22,
The bolts 23 and the bends are tightened and connected, and the crawler traveling device 1 is assembled to the fuselage.

In order to tightly fit the extended frame portion 8a into the axle protruding end portion 6a of the axle case 60, it is necessary not only to use the connection hole 24 but also to provide a portion on the upper side or the rear side as shown in FIG. It may be arranged in the notch hole 24a which is open, so that assembly can be easily performed.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the crawler traveling device according to the present invention, in which Fig. 1 is a partially cutaway overall side view of the transport vehicle, Fig. 2 is a cross-sectional view taken along the line ■ - B of Fig. 1, and Fig. 3 is a cross-sectional view taken along the 1, FIG. 4 is a cross-sectional view taken along the line ■■ in FIG. 1, and FIG. 5 shows side views of essential parts of different embodiments. 6... Axle case, 6a... Axle protruding side end, 8... Truck frame, F... Mountain flange, Fl... Plane, 11 ...Axle, 12...Sprocket.

Claims (1)

[Scope of utility model registration request] A structure of a crawler traveling device in which left and right track frames 8, 8, which are connected to the fuselage at multiple locations in the front and rear, are connected to the axle protruding end 6a of an axle case 60 attached to the fuselage, with the axle projecting side end 6a positioned inside the sprocket 12. In this case, the track frame 8 is provided with a guide wheel 10 in the middle part in the width direction.
. An extended frame portion 8a is provided which extends long rearward, and a hole 2 through which the axle 11 can be inserted is provided.
4, and the axle protruding end 6a of the axle case 6 is provided with a flange F in which a plane F parallel to the sprocket 12 fixed to the end of the axle 11 is formed within the width of the crawler 13. The axle case 6 is attached to the track frame 88 by connecting the flange F to the extending frame portion 8a by bringing the plane F of the flange F into contact with the inside surface of the extending frame portion 8a. A structure of a crawler traveling device characterized by a connected support.