JP2000033888A - Trailer and axle mounting unit used for same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adequately select an axle installation position corresponding to the center of gravity of the transferred object, to reduce the excess load on the connected portion (or hitch member) between the rear portion of the tractor and the front portion of the trailer and on the tractor, to prevent the danger in release work for releasing connection of the trailer from the connected portion (or hitch member), and to prevent the transferred object from bulging out the trailer. SOLUTION: A trailer is provided with a frame 5 having vertical members 6, 6 at both left and right sides, and running wheels 9, 9 provided on the vertical members 6, 6 on both left and right sides by an axle mounting unit 10. The axle mounting unit 10 is provided detacheably at an appropriate position of the vertical members 6 of the frame 5 so that the mounting position of running wheels 9 on an axle 90 is movable in the longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is designed to run on the ground by connecting to a rear part of a towing vehicle such as an automobile, with a transported object such as a watercraft (jet ski), a boat or a motorcycle loaded. The present invention relates to a trailer and an axle mounting device used for the trailer.

[0002]

2. Description of the Related Art Conventionally, a trailer of this type includes at least a frame composed of a vertical member and a horizontal member, and traveling wheels provided on a vertical member on both left and right sides of the frame by an axle mounting device.

[0003] The conventional axle mounting device provided on the trailer integrates a pair of U-shaped pieces by welding at predetermined intervals on the back surface of a vertical member provided on the left and right sides of the frame. Both ends of a leaf spring, which is a chassis spring, are fitted between the U-shaped pieces and fixed with bolts or the like, and the leaf spring is provided between an axle of a traveling wheel and a shock absorber mounting piece welded to the frame. Fix it. A shock absorber is mounted between the shock absorber mounting piece and the axle.

[0004]

However, according to the conventional trailer described above, a pair of U-shaped pieces are welded to the vertical members on both the left and right sides of the frame, and the traveling wheels are inserted between the pair of U-shaped pieces. Since both ends of the leaf spring fixed on the axle are fixed, the mounting position of the traveling wheel on the axle is fixed at a predetermined position and cannot be moved. As a result, this conventional trailer cannot cope with a case where the center of gravity of a conveyed object such as a boat to be loaded is different, and the following drawbacks occur when the trailer is towed, stacked, or unloaded. was there.

That is, when an object to be transported is loaded on a trailer, the more the center of gravity of the object to be transported is at the front position, the more the load of the object to be transported is applied to the front of the trailer. There is a problem in that the tow vehicle is burdened via the hitch member, which is a connecting portion between the rear portion of the tow vehicle and the front portion of the trailer. Also, when disconnecting the trailer from the connecting part (hitch member) of the towing vehicle, the object to be transported can be released with one hand because the front side of the transported object is heavy. In some cases, there was a problem that the lifting work was hard work.

On the other hand, when an object is loaded on the trailer, the more the center of gravity of the object is at the rear position, the more the load of the object is applied to the rear part of the trailer. With the rear end of the transported object as a fulcrum, the transported object and the front of the trailer tend to jump counterclockwise (or upward), and a heavy load is applied to the connecting portion (hitch member) of the towing vehicle and the towing vehicle. In addition, when the connection of the trailer is released from the connecting portion (hitch member) of the towing vehicle, as described above, the work to be transported and the front portion of the trailer jump up in the counterclockwise direction (or upward), so that the release operation is dangerous. In addition, there is a problem that the transported object falls from the rear part of the trailer in some cases.

The positions of the centers of gravity of the objects to be conveyed differ depending on the type, shape, etc., and in consideration of such a difference in the center of gravity, in the conventional example, the objects to be conveyed to be mounted on the trailer are placed. The position is adjusted in the front-rear direction of the trailer for each transported object to determine an appropriate position. Therefore, in the conventional example, the operation of adjusting the placement position of the transported object as described above is troublesome, and the length of the moving stroke of the transported object in the front-rear direction with respect to the trailer has a limit. And the transported object came out of the trailer and was dangerous.

An object of the present invention is to solve the problems of the above-mentioned conventional trailer. The present invention enables the position of the axle of the traveling wheel with respect to the frame to be slid in the front-rear direction so that the object to be transported can be slid. The axle mounting position corresponding to the position of the center of gravity can be appropriately selected, the connection between the rear of the towing vehicle and the front of the trailer (hitch member) and the overload on the towing vehicle are reduced, and the connection of the towing vehicle (hitch member) It is an object of the present invention to provide a trailer and an axle mounting device used for the trailer, which can prevent a danger of a releasing operation of releasing a connection of a trailer from a vehicle and prevent the transported object from sticking out of the trailer.

[0009]

In order to achieve the above object, a trailer according to the present invention comprises a frame having vertical members on both left and right sides, and running wheels provided on the left and right vertical members of the frame by an axle mounting device. The axle mounting device is characterized in that the axle mounting device is detachably provided at an appropriate position on a vertical member of the frame so that the mounting position of the axle of the traveling wheel can move in the front-rear direction.

Here, as means for removably providing the axle mounting device at an appropriate position on the vertical member of the frame, for example, a bolt insertion hole is formed in the axle mounting device, and the axle mounting device is connected to the vertical member of the trailer frame. Preferably, the vertical member of the frame is held by a U-shaped bolt, and then the U-shaped bolt is inserted into the bolt insertion hole and fastened with a nut.

However, the present invention is not limited to such a means. A plurality of bolt insertion holes are formed at intervals in the front-rear direction of the longitudinal member, and the plurality of bolt insertion holes are formed at appropriate positions. Alternatively, the positioning may be performed by aligning the bolt insertion holes formed in the axle attachment device with each other, inserting a normal linear bolt into both the insertion holes, and fastening with a nut. Alternatively, a clamp band may be welded to the axle mounting device, and a means for detachably holding the vertical member with the clamp band may be used, and other means can be used if the clamp can be detached.

In this case, the axle mounting device includes a board attached to a back surface of a vertical member on both right and left sides of the frame by a fixing member such as a U-shaped bolt or a crank band, and a traveling wheel on the underside of the board. It is preferable to include a chassis spring, such as a leaf spring, which is detachably attached to the axle and both ends of which are fixed to spring supports, and a fender attachment piece provided outside the substrate.

The axle mounting device further includes a shock absorber mounting plate provided on the substrate in addition to the above-described substrate, chassis spring, and fender mounting piece, and has one end fixed to the shock absorber mounting plate. It is preferable to provide a shock absorber having the other end fixed to the axle.

An axle mounting device for a trailer according to the present invention comprises:
A board attached to the back surface of a vertical member on both left and right sides of the frame by a fixing member such as a U-shaped bolt or a clamp band, and detachably attached to the axle of a traveling wheel on the lower surface side of the board, and both ends thereof And a chassis spring such as a leaf spring fixed to a spring receiver, and a fender mounting piece provided outside the substrate.

The axle mounting device for a trailer preferably includes a shock absorber mounting plate provided on the substrate in addition to the substrate, the chassis spring and the fender mounting piece.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a trailer according to the present invention will be described below with reference to FIGS. 1 is an overall perspective view of a trailer according to the present invention, FIG. 2 is a perspective view showing a mounted state of an axle mounting apparatus, FIG. 3 is a left side view of a state where a right axle mounting apparatus is mounted on a frame, and FIG. 1 is a side view of a main part of FIG. 1, FIG. 5 is a partial perspective view of the vicinity of the left axle mounting device in FIG. 1 from which the left fender is omitted, FIG. 6 is a left side view of the left axle mounting device, and FIG. 8 is a rear view, FIG. 9 is a cross-sectional view taken along the line AA of FIG. 6, FIG. 10 is a plan view of the left and right axle mounting devices, FIG.
Is a bottom view, and FIG. 12 is a perspective view showing an example of transporting the trailer according to the present invention by a towing vehicle.

As shown in FIGS. 1 and 12, a trailer 1 of the present invention has a conveyed object (not shown) such as a water motorcycle, a boat, a motorcycle or camping equipment loaded on the trailer 1. The coupler 2 provided at the front end of the trailer 1 is connected by towing means such as a connecting member (hitch member) 4 provided at the rear of the towing vehicle 3, and the trailer 1 is transported by the towing vehicle.

The trailer 1 is roughly divided into a frame 5 composed of vertical members 6, 6 having a substantially boat-like outer shape and provided on a pair of right and left sides, and a plurality of horizontal members 7 fixed to the vertical members 6, 6. And rails 8 provided on the upper portion of the frame 5 for stacking articles to be transported, and running wheels 9, 9 provided on the vertical members 6, 6 on both left and right sides of the frame 5 by an axle mounting device 10. I have.

A feature of the present invention is that the axle mounting device 10 is detachably mounted at an appropriate position on the vertical member 6 of the frame 5 so that the mounting position of the axle 90 of the traveling wheel 9 can be moved in the front-rear direction. The point is that it is provided.

The axle mounting device 10 will be described in detail. The axle mounting device 10 is attached to the back surfaces of the vertical members 6, 6 on the left and right sides of the frame 5 by a fixing member 14 including a U-shaped bolt 12 and a nut 13. And a chassis spring 15 removably attached to the axle 90 of the traveling wheel 9 on the lower surface side of the substrate 11 and having both ends fixed to spring receivers 16 and 16 with bolts 17 and nuts 17a.
And a plurality of fender mounting pieces 18, 18 provided outside the substrate 11, and a shock absorber mounting plate 20 provided inside the substrate 11.

The substrate 11 is an elongated flat plate as shown in FIGS.
Flanges 21, 21, 2 wider than the width of the vertical member 6
1 and 21 are formed, and spring supports 16 and 16 having a U-shaped cross section are welded to the lower surface of the substrate 11, and the above-mentioned fender mounting pieces 18 and 18 and the shock absorber mounting plate 20 are attached to the substrate 11. Is provided.

One end of the chassis spring 15 is entangled. A bolt 17 is inserted into the entangled portion and the bolt insertion hole 16a of the spring receiver 16 and is fixed by tightening with a nut 17a. The other end of 15 is bent, and the bent portion is engaged with a bolt 17 inserted into a bolt insertion hole 16 a of a spring receiver 16. As a result, the chassis spring 15 is fixed to the substrate 11.

As shown in FIGS. 3 and 5, the substrate 11 to which the chassis spring 15 has been fixed as described above is applied to an appropriate position on the back surface of the vertical member 6 of the frame 5 from below, and formed on both ends of the substrate 11. The U-shaped bolt 12 is inserted from above into the bolt holes 21a of the flanges 21, 21. The bolt 12 surrounds the vertical member 6 of the frame 5, and the bolt 12 is inserted into the nut 13 through the washer 13 a. Tighten and fix with.

The shock absorber mounting plate 20
Has an inner short hanging piece 20a and an outer long hanging piece 20b in a substantially 7-shape, and has both hanging pieces 20a, 20b.
A short middle hanging piece 20c is formed in the middle of b, and bolt holes 22, 22 are formed in upper and lower portions of the long hanging piece 20b. As described above, the substrate 1 is provided on the back surface of the vertical member 6 of the frame 5.
1 is fixed, the upper surface and the side surfaces of the vertical member 6 and the substrate 1
A U-shaped bolt 23 is inserted into the bolt holes 22 and 22 of the shock absorber mounting plate 20 so as to surround the U-shaped bolt 1, and the U-shaped bolt 23 is fastened and fixed with a nut 24.

One end of the shock absorber 25 is fitted into a space formed by the short hanging piece 20a and the short intermediate hanging piece 20c inside the shock absorber mounting plate 20, and a bolt formed at the one end is inserted. Bolts 28 are inserted into holes (not shown) and bolt insertion holes 26 and 27 formed in the hanging pieces 20a and 20c, and nuts 29 are inserted.
And fix it with.

On the other hand, a bolt insertion hole (not shown) formed at the other end of the shock absorber 25 is
A bolt 32 is inserted into a bolt insertion hole 31 formed in a U-shaped shock absorber mounting piece 30 welded to an axle 90 of the vehicle, and tightened and fixed with a nut 33 (FIG. 1).
To FIG. 5).

The axle 9 of the chassis spring 15 and the traveling wheel 9
The connection with 0 is made as shown in FIGS. That is, the mounting plate 34 is mounted on the upper surface of the chassis spring 15 mounted on the axle 90, and the mounting plate 3
4 are formed in a plurality of bolt holes 35.
A U-shaped bolt 36 is inserted and fitted in a state surrounding the axle 90 from below, and the bolt 36 is fastened and fixed with a nut 37.

The fender attachment pieces 18 provided outside the substrate 11 are covered with a fender 40 from above.
Bolt holes 4 formed in the fender mounting pieces 18
Bolts 42, 42 are fitted into the bolts 1, 41, respectively, and the bolt holes 42, 42 are fastened and fixed with nuts (not shown).

As described above, the axle mounting device 10 is mounted on the vertical member 6 of the frame 5. To remove the axle mounting device 10 from the vertical member 6, it is necessary to reverse the mounting sequence described above. It is good to remove it by returning to the beginning.
The order in which the axle attachment device 10 is attached to or detached from the longitudinal member 6 is not limited to the order described above, and may be other methods.

In FIGS. 1 and 12, reference numeral 45 denotes an apparatus for fixing an object to be transported to the frame 5 so that the object does not swing or fall off. A rear bumper is detachably attached to the member 7, and the rear bumper 46 is provided with a turn signal 47, a rear reflector 48, and the like.

The axle mounting device for a trailer according to the present invention comprises:
As can be seen from the above-described configuration, the substrate 11 attached to the back surface of the vertical member 6 on both the left and right sides of the frame 5 by the fixing member 14.
The lower surface of the base plate 11 is detachably attached to the axle 90 of the traveling wheel 9 on the lower surface side, and both ends thereof are
A chassis spring 15 fixed to the base 16 and a fender mounting piece 18 provided outside the substrate 11 are provided.

The axle mounting device for a trailer according to the present invention preferably includes a shock absorber mounting plate 20 provided on the substrate 11 in addition to the above-described configuration (the substrate 11, the chassis spring 15, and the fender mounting piece 18). .

[0033]

[Modification] In the above embodiment, the axle mounting device 10 comprises the base plate 11, the chassis spring 15 having both ends fixed to the spring supports 16, 16, the fender mounting piece 18, and the shock absorber mounting plate 20. However, in the present invention, the shock absorber mounting plate 20 may be omitted, and in this case, the shock absorber 25 is not provided.

In this embodiment, the flanges 21 are formed at both ends of the substrate 11, and the U-shaped bolt 12 as the fixing member 14 is inserted into the bolt hole 21 a of the flange 21 and fastened with the nut 13. It is. But,
Although not shown, a pair of vertical plates such as fender mounting pieces 18 are erected on the left and right side walls of both ends of the substrate 11 by welding or the like instead of the configuration including the flange 21 and the U-shaped bolt 12 and the nut 13. Alternatively, a generally used linear bolt may be inserted into a bolt hole formed at the upper end of the pair of vertical plates and fastened and fixed with a nut.

[0035]

According to the trailer of the first aspect,
The axle mounting device is detachably provided at an appropriate position of the vertical member of the frame so that the mounting position of the axle of the traveling wheel can move in the front-rear direction, and is mounted on the frame because the axle can be moved to an arbitrary position. Since the mounting position of the axle with respect to the vertical member of the frame can be appropriately set and mounted in accordance with the position of the center of gravity of the transferred object, all the drawbacks of the conventional example can be solved.

That is, when the center of gravity of the object to be loaded on the trailer is at the front position, the axle of the traveling wheels is provided on the vertical member of the frame located at a position more forward than usual.
The downward load on the towing vehicle via the front part of the trailer and the connecting part (hitch member) can be greatly reduced. Therefore, when the connection of the trailer is released from the hitch member of the towing vehicle, the front side of the transported object is lightened, and it can be released with one hand by one person.

On the other hand, when the center of gravity of the object to be loaded on the trailer is at the rear position, the axle of the traveling wheels is provided on the vertical member of the frame located at a position rearward from the normal position, so that the front of the object and the trailer is provided. The portion can be prevented from jumping in the counterclockwise direction (upward), and the load on the connecting member (hitch member) between the frame and the towing vehicle and the towing vehicle can be eliminated. Therefore, the operation of releasing the connection of the trailer from the hitch member of the towing vehicle is safe, and the transported object does not fall from the rear portion of the trailer.

Also, in the present invention, since the axle mounting device only needs to be moved and mounted in the front-rear direction of the vertical member of the frame, the operation of adjusting the placement position of the transported object can be performed very easily and easily. It is possible to avoid the sticking of an object from the trailer.

According to the second aspect of the present invention, the axle mounting device includes a board attached to the back surface of the vertical member on both left and right sides of the frame by a fixing member, and an axle of running wheels on the lower surface side of the board. A chassis spring detachably mounted and having both ends fixed to spring supports, and a fender mounting piece provided on the outside of the board, wherein the board, the chassis spring, and the fender mounting piece are integrally formed. As a result, the axle mounting device can be easily attached to the vertical member of the frame, and the fender can be easily attached and attached to the fender mounting piece. It has the effect described in 1.

According to the third aspect of the present invention, a shock absorber mounting plate is provided in addition to the substrate, the chassis spring and the fender mounting piece, and one end is fixed to the shock absorber mounting plate and the other end is fixed to the axle. The shock absorber can be easily mounted on the vertical member of the frame as an axle mounting device, and the fender can be easily and quickly mounted as described above. In addition to having the effect of suppressing the jumping of the surface, it has the effect of the first aspect.

According to the axle mounting device for a trailer according to the fourth aspect, in order to obtain the trailer described in the second aspect, the structure for the trailer can be easily mounted on the vertical member of the frame, and the fender can be mounted. An axle mounting device can be provided.

According to the axle mounting device for a trailer according to the fifth aspect, in order to obtain the trailer described in the third aspect, the structure is simple, easily mounted on the vertical member of the frame, and the fender and the shock absorber can be mounted. An axle mounting device for a trailer can be provided.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a trailer according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an attached state of an axle attachment device used for a trailer according to the present invention.

FIG. 3 is a left side view of a state where the right axle mounting device is mounted on a frame.

FIG. 4 is a side view of a main part of FIG. 1;

FIG. 5 is a partial perspective view of the vicinity of a left axle mounting device in which a left fender is omitted in FIG. 1;

FIG. 6 is a left side view of the left axle mounting device.

FIG. 7 is a front view of the left and right axle mounting devices.

FIG. 8 is a rear view of the left and right axle mounting devices.

FIG. 9 is a sectional view taken along the line AA of FIG. 6;

FIG. 10 is a plan view of the left and right axle mounting devices.

FIG. 11 is a bottom view of the left and right axle mounting devices.

FIG. 12 is a perspective view showing an example of transporting a trailer according to the present invention by a towing vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Trailer 3 Towing vehicle 4 Connecting member (hitch member) 5 Frame 6 Vertical member 9 Running wheel 10 Axle mounting device 11 Substrate 14 Fixing member 15 Chassis spring 16 Spring receiver 18 Fender mounting piece 20 Shock absorber mounting plate 25 Shock absorber 30 Shock absorber mounting Piece 40 fender 90 axle

Claims (5)

[Reference number] P807229 [Claims] 1. A trailer comprising at least a frame having vertical members on both left and right sides and running wheels provided by an axle mounting device on the left and right vertical members of the frame, wherein the axle mounting device includes A trailer which is detachably provided at an appropriate position of a vertical member of a frame so that a mounting position of an axle can move in a front-rear direction. 2. An axle mounting device, comprising: a base plate attached to a back surface of a vertical member on both left and right sides of a frame by a fixing member; and a detachably mounted lower surface side of the base plate on an axle of traveling wheels.
And a chassis spring having both ends fixed to a spring receiver,
The trailer according to claim 1, further comprising a fender attachment piece provided outside the substrate. 3. An axle mounting device, comprising: a base plate attached to a back surface of a vertical member on both right and left sides of a frame by a fixing member; and a lower surface side of the base plate detachably mounted on an axle of traveling wheels.
And a chassis spring having both ends fixed to a spring receiver,
A shock absorber mounting plate provided on the outside of the substrate and a shock absorber mounting plate provided on the substrate, and having one end fixed to the shock absorber mounting plate and the other end fixed to an axle. The trailer according to claim 1, comprising a trailer. 4. A board attached by a fixing member to the back surface of a vertical member on both left and right sides of a frame, and a lower surface side of the board is detachably attached to an axle of a traveling wheel, and both ends of the board are supported by spring supports. An axle mounting device for a trailer, comprising: a fixed chassis spring; and a fender mounting piece provided outside the substrate. 5. A board attached by a fixing member to the back surface of a vertical member on both left and right sides of a frame, and a lower surface side of the board is removably attached to an axle of a traveling wheel, and both ends of the board are used as spring supports. An axle mounting device for a trailer, comprising: a fixed chassis spring; a fender mounting piece provided outside the substrate; and a shock absorber mounting plate provided on the substrate.