JPS633301Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a chain tensioning structure in a wheel-linked chain case of a power carrier.

Conventionally, in power transport vehicles, a chain is stretched between each axle, and each wheel is driven through the chain.
The chain is housed in the chain case, and is maintained in a tensioned state by a predetermined chain tension structure in order to tighten the slack in the chain, but the lower chain tension structure must be fixed inside the bottom of the chain case. However, the fixing structure was complicated, and the work of assembling and fixing it inside the chain case was complicated.

In this invention, the lower chain tension body is supported inside the chain case by a support body that can be freely inserted and removed, and is in contact with a contact plate fixed to the bottom side plate of the chain case while it is in contact with the side surface of the chain tension body. It is an object of the present invention to provide a wheel-linked chain tensioning structure for a power carrier, which prevents lateral sliding and securely fixes a lower chain tensioning body in a chain case with a simple structure and simple fixing work.

To explain the embodiment of this invention in detail based on the drawings, A indicates a power transport vehicle, which is a six-wheel drive power transport vehicle with three wheels on each side, and on the fuselage frame a, A driving section 1 is provided on the right side, and a prime mover section 2 is provided on the left side, approximately in the center of the fuselage, and on the left side, 3 batteries and 4 fuel tanks are arranged in front and rear. At the rear end of the vehicle, a chain case 5 that serves as a chassis extends rearward. A front wheel 6, a middle wheel 7, and a rear wheel 8 are attached to the front, middle, and rear of the chain case 5, respectively, and sprockets are attached to the axles 6', 7', and 8' of each wheel in the chain case 5, respectively. 9, 10, and 11 are provided, and a front chain 12 and a rear chain 13 are suspended between each sprocket.

The transmission part 1 is located in the center of the chain case 5.
4 is installed and is configured to receive power from the prime mover section 1 and transmit the power to each wheel, and the transmission section 14 is connected to the axle 7 of the middle wheel 7 via an interlocking mechanism 15. The axle 7' transmits power to the front and rear axles via chains 12 and 13, forming a six-wheel drive transport vehicle.

A dumpable loading platform 16 is installed above the chain case 5, and is configured to be able to move up and down rearward using a hydraulic cylinder 17.

The chains 12 and 13 are housed in the chain case 5, and the chains 12 and 13 on the middle axle 7' and the front axle 6'
is on the outside with respect to the fuselage at the vertical center line of the cross section of the chain case 5, and on the chain 1 between the middle axle and the rear axle.
3 is also arranged inside.

The chain case 5 has a rectangular cross-section and is formed into a longitudinal shape, and is provided at a predetermined location on the upper plate 5' of the chain case 5, for example, in the center of each axle mounting position.
A rectangular opening 18 is formed, and a rectangular annular pedestal 19 is placed and welded to the upper plate 5' of the chain case at the periphery of the opening 18.

A lid 20 is detachably fixed to the upper surface of the pedestal 19, and attachment/detachment is performed by screwing in or removing bolts 21 that fix the lid 20 into the pedestal 19.

A chain tensioning body 22 for tensioning the upper chain made of an elastic material and curved downward is attached to the lower surface of the lid body 20.

Inside the bottom side plate 5'' of the chain case 5, a lower chain tension body 23 made of a synthetic resin material is disposed.
The lower chain tension body 23 has a rectangular insertion hole 24 bored in its side surface. Horizontal plate 2 of substantially L-shaped support 25
6 is removably inserted into the support body 2.
It is cantilever-supported by a vertical plate 27 of No. 5 to a mounting portion 28 on the inner side of the side plate of the chain case 5. Mounting part 2
8 is inside the body A between the front axle 6' and the middle axle 7', and outside between the middle axle and the rear axle, and inside the chain case side plate through the opening 18 within the range where normal hand tools can be used. is set up.

On the bottom side plate 5'' of the chain case 5, a contact plate 29 for preventing the tension member from sliding laterally is fixedly welded to the side of the lower chain tension member.The contact plate 29 is approximately L.
The height is approximately the same as the gap between the horizontal plate 26 of the letter-shaped support body and the bottom plate of the chain case, that is, the thickness below the insertion hole of the lower chain tension body,
It is configured to prevent the lower chain tension body 23 from sliding laterally.

The embodiment of the present invention is constructed as described above, and when inspecting the chain tension body, the bolts 21 are removed, the lid body 20 is removed from the pedestal 19, and the opening of the chain case 5 is opened. By opening the lid of the section 18 and removing the bolts 30, the support body 25 and the chain tension body 23 are taken out as a unit from the chain case 5 for inspection. 2
Insert the horizontal plate 26 of the support body 25 into the insertion hole 24 drilled in the support body 25 and the chain tension body 2.
3 as one body, and insert the chain case 5 from the opening 18.
After inserting the chain tension body into the gap between the side plate of the chain case 5 and the tension body lateral sliding prevention plate 29, fix it to the mounting hole 28 provided in the chain case 5 with bolts and nuts 30. , by closing the opening 18 with the lid 20.

According to this invention, there is no need to work deep inside the chain case to fix the chain tension body, and the necessary and sufficient chain tension body can be fixed near the opening, using only a normal hand tool (socket trench). This has the effect of making assembly, inspection, maintenance, and replacement easy.

That is, in the present invention, the horizontal plate of the support is removably inserted into the insertion hole drilled laterally in the lower chain tension body placed on the bottom plate of the chain case, and the approximately L-shaped support is inserted. Since the lower chain tension body is loosely supported by the body, the support body can be easily installed in the chain case.

Furthermore, in the present invention, the lateral movement of the lower chain tension member is completely prevented by bringing the lateral side surface of the lower chain tension member into contact with a plate for preventing lateral sliding of the tension member fixed to the bottom plate of the chain case. It can be prevented and fixed in the proper position, and the chain can be tensioned in an optimal state.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the power transport vehicle with the structure of the present invention, Fig. 2 is a plan view of the main parts, Fig. 3 is a partially cutaway side view taken in the direction of the arrow in Fig. 2, and Fig. 4 is the same as Fig. 2. A cross-sectional view of. A: Power carrier, 5: Chain case, 18: Opening, 28: Mounting part, 23: Lower chain tension body,
25: support body, 29: contact plate.

Claims (1)

[Scope of utility model registration request] A substantially L-shaped support body 25 consisting of a horizontal plate 26 and a vertical plate 27 connected orthogonally thereto is disposed within the chain case 5, and the vertical plate 27 of the support body 25 can be attached and detached from the chain case. The horizontal plate 26 of the support body 25 is connected to the inner surface of the side plate of the chain case 5.
The lower chain tension body 23 placed on the bottom side plate 5' of
The lower chain tension body 23 is supported in a loosely fitted state by the substantially L-shaped support 25, and the lower chain tension body 23 is Chain case 5 on the side
A lower chain tension structure in a wheel-linked chain case of a power transport vehicle, characterized in that the tension body is in contact with a side-sliding prevention plate 29 fixed to a bottom side plate 5'' of a power carrier.