JPH0141973Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a wear prevention plate for a chain case in a multi-wheel drive vehicle such as an 8-wheel drive or a 6-wheel drive using a chain transmission for traveling on uneven surfaces with severe unevenness. .

Generally, in this type of multi-wheel drive vehicle, the chain case of the transmission chain for each drive wheel must be as high as possible above the ground to avoid contact with irregularities on the ground surface because it runs on rough terrain. be. Moreover,
Since the aircraft needs to move forward and backward frequently, the tension in the transmission chain changes repeatedly. Therefore, it is not possible to install a chain tightener on the transmission chain to tighten only one side, and this causes slack in the transmission chain. There is a drawback that the chain case wears out due to contact with the bottom surface of the chain case. Therefore, conventionally, the sixth
As shown in FIG. 7, the anti-wear plate 16 corresponds to each transmission chain 8 suspended between each transmission shaft 4.
is fixed to a pair of bolted locking parts 17 provided between adjacent transmission shafts 4, and is removably fixed so that the contacting intermediate part 16b of the transmission chain 8 is separated from the chain case bottom surface 5a. Because it was
The ground clearance of the chain case 5 must be lowered by the distance of the wear prevention plate 16 so as not to interfere with the transmission system, so there are disadvantages such as the chain case 5 coming into contact with the ground surface when driving on rough terrain. It was hot.

The present invention was devised in order to eliminate these drawbacks in view of the above-mentioned actual situation.In particular, the bottom of the chain case covering the transmission chain is provided at both front and rear ends away from the starting and ending ends of the transmission chain. A locking body is fixedly installed between the locking bodies, and a long flat wear prevention plate is removably locked to the bottom of the chain case along the transmission chain between the locking bodies. By configuring the wear prevention plate to maintain a stable state regardless of tension changes in the transmission chain due to
By supporting the slack transmission chain with an anti-wear plate and preventing the bottom plate of the chain case from rubbing against the anti-wear plate, it is possible to reliably prevent wear of the chain case. Even if the chain case is placed close to the ground, the locking body of the wear prevention plate does not interfere with the transmission system, and the ground clearance of the chain case can be made as high as possible. The object of the present invention is to provide a wear-preventing plate for a chain case in a multi-wheel drive vehicle, which prevents the plate from coming into contact with the chain case.

The configuration of the present invention will be explained based on an embodiment shown in the drawings. Reference numeral 1 is an eight-wheel drive traveling aircraft, and a driving control unit 2 is provided in the front half of the aircraft frame 1a of the traveling aircraft 1. A loading platform 3 that can be raised and lowered via an operating lever 3a is mounted on the rear half of the vehicle. A housing-shaped chain case 5 that supports each transmission shaft 4 arranged in the longitudinal direction is installed on both left and right sides of the fuselage frame 1a. is equipped with a drive wheel 6.

Among the drive shafts 4, the other three transmission shafts 4 excluding the rearmost transmission shaft 4 are equipped with a pair of left and right transmission gears 7.
However, there is also a single transmission gear 7 on the rearmost transmission shaft 4.
are respectively positioned and pivoted inside the chain case 5. A transmission chain 8 is alternately suspended between the transmission gears 7 of the adjacent transmission shafts 4 in a staggered manner so that they are integrally driven. On the other hand, at the front end of the upper surface of the chain case 5, there is a drive gear 10 provided at the tip of a drive shaft 9 protruding from the fuselage frame 1a, and a transmission gear 10 provided on the frontmost transmission shaft 4, which is suspended between an adjacent transmission shaft 4. The transmission chain 8 has an elongated hole 12 through which a drive chain 11 suspended between the transmission gear 7 and the other transmission gear 7 that does not mesh with the transmission chain 8 passes through. 13 is a cover body that covers the drive chain 11.

14 is an abrasion prevention plate, and the abrasion prevention plate 14
is constituted by an elongated flat plate-shaped body extending over both the front and rear ends of the chain case 5, and the locking bodies are provided at both the front and rear ends of the chain case bottom surface 5a, which are far from the starting end and rear end of the transmission chain 8. 15, wear prevention plate 1
By removably locking both ends of the chain 4, it is fixed to the chain case bottom surface 5a along the transmission chain 8. That is, the wear prevention plate 14
is formed with a width that roughly divides the width of the chain case bottom surface 5a into two, and is designed to have two pieces laid in parallel with a width slightly narrower than the chain case bottom surface 5a. After inserting the wear prevention plate 14 through the hole 12 and locking it with the rear locking body 15, insert the other end of the wear prevention plate 14 from the elongated hole 12 with the wear prevention plate 14 curved downward, and then the wear prevention plate 14
By curving it upward and locking the other end with the front locking body 15, the wear prevention plate 14 can be prevented from moving even if the tension in the transmission chain 8 changes as the drive wheel 6 moves back and forth. It is fixed in a stable state without any movement.

Next, the operation of the present invention constructed as described above will be explained. As described above, one end of the wear prevention plate 14 is inserted through the long hole 12 and locked with the locking body 15 on the rear side, and then curved downward and the other end is inserted through the long hole 12. Later, it can be easily fixed to the chain case bottom 5a by bending it upward in a curved shape and locking the other end to the front locking body 15. At this time, since the wear prevention plate 14 is formed of a long flat plate that is long in the front-rear direction, it is easy to warp the wear prevention plate 14 in the vertical direction, and moreover, it is easier to warp the wear prevention plate 14 in the vertical direction. Since the width is also slightly narrow, positioning within the chain case 5 can be easily performed.

In the chain case 5 to which the wear prevention plate 14 is fixed in this manner, when the transmission chain 8 suspended between the transmission gears 7 of the adjacent transmission shafts 4 becomes slack, the slack is not caused by the bottom surface 5a of the case. Since it is received in contact with the wear prevention plate 14 along the transmission chain 8, the bottom surface 5a of the case does not wear out.
Moreover, since the wear prevention plate 14 is locked to the case bottom 5a by a locking body 15 fixed to the case bottom 5a, the traveling body 1 frequently moves back and forth, and the tension in the transmission chain 8 is increased. Even if the chain case 5 changes, it will not move on the case bottom surface 5a and rub against each other, and wear of the chain case 5 can be reliably prevented.

Furthermore, since the locking body 15 is fixedly installed at both front and rear ends of the case bottom surface 5a, which are far from the starting and ending ends of the transmission chain, the locking body 15 will prevent the transmission even if the case bottom surface 5a is brought close to the transmission shaft 4. Since it does not interfere with the system, the chain case 5 can be set at a high ground height suitable for running on rough terrain. moreover,
The mounting hole for attaching and detaching the wear prevention plate 14 uses the elongated hole 12 for the drive chain 11 that transmits power between the fuselage 1 side and the chain case 5 side, so it is especially necessary to use a dedicated mounting hole for the chain case 5. There is no need to drill holes, the structure is simple, and the chain case 5
The strength of can be further increased. Furthermore, since the locking body 15 can be fixed in advance by welding or the like, even if the chain case 5 is filled with oil, it is possible to eliminate oil leakage.

If the wear prevention plate 14 becomes worn due to use, it can be used for a long time by removing the wear prevention plate 14 by performing the operation opposite to the above-mentioned installation operation and replacing it with a new wear prevention plate 14. Become.

In summary, the present invention provides a multi-wheel drive vehicle configured to transmit power through a transmission chain in which transmission shafts for a plurality of drive wheels arranged in the front and rear directions are successively connected in a staggered manner. , on the bottom of the chain case that covers the transmission chain, locking bodies are fixed at both front and rear ends apart from the starting end and the terminal end of the transmission chain, and a long flat wear prevention plate is installed between the locking bodies. The anti-wear plate is configured to be removably engaged with the bottom of the chain case along the transmission chain, and to be held in a stable state regardless of changes in the tension of the transmission chain as the drive wheels move back and forth. Even if the transmission chain becomes slack while the wheel drive vehicle is running, the long flat wear prevention plate along the transmission chain supports the slack transmission chain, so the transmission chain directly contacts the bottom of the chain case. Moreover, since the wear prevention plate is fixed to the bottom of the chain case, even if the traveling body frequently moves back and forth, it will not move on the bottom of the chain case and will remain stable. The bottom surface is not rubbed by the wear prevention plate, and wear of the chain case can be reliably prevented. Moreover, the anti-wear plate is
Since the locking bodies are fixed between the front and rear ends of the bottom of the chain case, which are far from the starting and ending ends of the transmission chain, the locking bodies do not get in the way of the transmission system. By placing the bottom plate close to each transmission shaft for the drive wheels, the ground clearance of the chain case can be made as high as possible, and even when driving on uneven ground, the chain case will not come into contact with uneven parts of the ground surface. It's something that doesn't exist.

[Brief explanation of the drawing]

The drawings show an embodiment of a chain case device for a multi-wheel drive vehicle according to the present invention, and FIG. 1 is an overall side view of the multi-wheel drive vehicle, and FIG.
The figure is a front view of the main parts of the same as above, FIG. 3 is a sectional side view of the chain case, FIG. 4 is a sectional plan view of the same as above, FIG. , FIG. 7 is a sectional front view of the same. In the figure, 1 is a traveling body, 4 is a transmission shaft, 5 is a chain case, 5a is its bottom, 8 is a transmission chain, 14
1 is an abrasion prevention plate, and 15 is a locking body.

Claims (1)

[Scope of utility model registration request] In a multi-wheel drive vehicle configured to transmit power via a transmission chain sequentially connecting transmission shafts for a plurality of drive wheels disposed in the front-rear direction in a staggered manner, a chain covering the transmission chain. On the bottom of the case, locking bodies are fixed at both front and rear ends of the transmission chain, which are far from the starting and ending ends of the transmission chain, and a long flat wear prevention plate is placed between the locking bodies along the transmission chain. A multi-wheel drive traveling body, characterized in that the anti-wear plate is detachably locked to the bottom of the case and is configured to maintain a stable state regardless of changes in the tension of the transmission chain as the drive wheels move forward and backward. Anti-wear plate for chain case.