JPS5931475Y2 - Upper loading platform of car carrier - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an upper loading platform of a motor vehicle transport vehicle in which a tiltable front loading platform and a tiltable/progressable rear loading platform are interlocked.

In an upper loading platform equipped with a front loading platform that can tilt and a rear loading platform that can tilt and move forward, even if one vehicle is loaded one by one on the horizontal front and rear loading platforms, two points will be lost in Figure 2. The rear of the vehicle may protrude from the rear end of the carrier, as shown by the dashed line.

At this time, when the front loading platform is tilted, the rear of the car loaded on the front loading platform will move downward, and when the rear loading platform is tilted and moved forward,
The front of the car loaded on the rear loading platform moves forward to above the rear of the car loaded on the front loading platform, so the rear of the car
In FIG. 2, as shown by the one-dot chain line, it does not protrude from the rear end of the carrier.

Conventionally, in an upper loading platform where the front loading platform is tilted, the rear loading platform is tilted, and the loading platform moves forward, the front loading platform and the rear loading platform are each operated by different hydraulic cylinders.

When tilting the front or rear loading platform, even if the hydraulic cylinder that moves the rear loading platform is operated first, or the hydraulic cylinder that moves the front loading platform is operated first, the front loading platform may rotate to the specified position. When the rear cargo bed is tilted by operating the hydraulic cylinder that moves the rear cargo bed, the front of the vehicle loaded on the rear cargo bed collides with the rear of the vehicle loaded on the front cargo bed.

When leveling the front and rear cargo beds, if you operate the hydraulic cylinder that moves the front cargo bed first, or if you operate the hydraulic cylinder to level the front cargo bed before the rear cargo bed is completely level, the vehicle and a car collide.

The object of this invention is to provide an upper loading platform for a motor vehicle carrier that eliminates the above-mentioned drawbacks of the conventional ones.

Since the upper loading platform is symmetrical, this invention will be explained based on the drawings on one side.

Fig. 1 is a plan view of the upper loading platform with the front part and one side omitted, showing the first embodiment of this invention; Fig. 2 is a sectional view taken along line 2-2 in Fig. 1; Fig. 3 is a slider FIG. 4 is an enlarged view showing the relationship between the rear longitudinal girder and the lever.

In Figures 1 to 4, the upper loading platform includes a front fixed floor 1,
A rectangular front hole 4 surrounded by the front longitudinal girder 2 fixed to both sides of the rear end of the front fixed bed and the middle fixed bed 3 fixed to the rear end of the front longitudinal girder, and the middle fixed bed 3° behind the middle fixed bed. There is a rear hole 7 surrounded by a rear longitudinal girder 5 fixed to both ends and a rear fixed bed 6 fixed to the rear end of the rear longitudinal girder, and a front loading platform 8 and a rear loading platform 9 are respectively connected to the front opening 4 and It is inserted into the rear hole part 7.

The front end of the front loading platform 8 on which a car is loaded is connected to the rear end of the front fixed floor 1 by a hinge A.

A triangular plate-shaped mounting portion 10 is provided on the lower surface of the rear outer side of the front loading platform 8.
is fixed, and a cylindrical slider S is provided protruding from the outside of the mounting portion 10.

A front support part 19 is provided at the rear lower part of the front longitudinal girder 2, and the front support part 19 supports the end of the stop plate 11 having a substantially rectangular slot (L) at a rotation axis B, and supports the slider S. is slot L
is inserted into the slot L and slides inside the slot L.

When the front loading platform 8 rotates and the slider S comes into contact with the end of the slot L, the front loading platform 8 will no longer be spaced and will stop at this position.

The rear longitudinal beam 5 includes a rear support part 20 at the front lower part, and the rear support part 20
is the rotation axis C, and the bent part of the substantially "<"-shaped lever 12 is
Support the chevron facing forward.

The tip of the upper arm 13 facing above the lever 12 supports the front part of the rear loading platform 9 around a rotation axis.

A guide plate 14 provided with a substantially rectangular slot M is fixed to the rear inner side of the rear longitudinal beam 5 so that the slot M is horizontal.

A cylindrical slider T protruding outward from the rear side of the rear loading platform 9 is inserted into the slot M.

The slider T supports the rear part of the rear loading platform 9 while sliding in the slot M.

The hydraulic cylinder 15 is operated by a switching valve (not shown) that controls hydraulic pressure from a hydraulic pressure supply source (not shown), and one end of the oil cylinder 15 is connected to the tip of the lower arm 16 facing downward of the lever 12. The other end is connected to the lower end of the mounting part 10 of the front loading platform 8 by a universal joint F.

When the front and rear loading platforms are horizontal, the position of the universal joint F is below the line connecting the position of the universal joint E and the position of the hinge A.

This is so that the front loading platform can be easily leveled by contracting the hydraulic cylinder.

The upper arm 13 of the lever 12 is connected to the rotation axis CO of the lever 12.
') When rotated forward (θ degrees) from vertically upward,
The front part of the rear loading platform 9 is supported by a support stand 11 fixed to the upper surface of the side part of the middle fixed floor 3.

Even if the switching valve is set to "neutral", the oil pressure in the hydraulic cylinder will decrease over time and the lever will be able to rotate.
To prevent the rear loading platform from becoming horizontal due to vibrations from the transport vehicle, and to avoid the need for internal force when turning the lever clockwise with a hydraulic cylinder, set θ to approximately 15 degrees.

Instead of providing the middle support base 17, a protrusion can be provided on the middle fixed bed 3 to prevent the lever from turning any further.

When the maintenance plate 18 is fixed to the inside of the rear longitudinal beam 5 and the lower surface of the front part of the rear loading platform 9 comes into contact with the upper surface of the maintaining plate 18, the rear loading platform 9 becomes horizontal and at the same height as the middle fixed floor 3, and the rear It is fixed to the vertical girder 5.

A stopper 21 that can rotate around a vertical axis is provided at the tip of the intermediate fixed bed 3, and when the upper surface of the stopper 21 comes into contact with the lower surface of the front loading platform 8, the front loading platform 8 cannot be rotated clockwise.

Even if the switching valve is set to "neutral", the hydraulic cylinder 15 cannot maintain the front loading platform horizontally for a long period of time, so when it is necessary to maintain both loading platforms horizontally for a long period of time, the stopper 21
Requires.

However, if the front loading platform needs to be kept horizontal only when loading and unloading the vehicle, the stopper 21 is not required.

FIG. 5 is an enlarged front view of the guide plate and slider T showing the second embodiment of this invention.

Compared to the first embodiment, the slot M of the guide plate 14
However, the difference is that the front part has a 5-degree rearward drop, and the rear part has a 5-degree rearward rise.

FIG. 6 is an enlarged front view of the guide plate and slider T showing the third embodiment of this invention.

Compared to the second embodiment, the slot M of the guide plate 14
However, the difference is that it is a concave arc.

The effects of the first embodiment will be explained from a state in which one vehicle is loaded on each of the horizontal front and rear loading platforms.

In FIGS. 2 to 4, the front part of the rear loading platform 9 is connected to the maintenance plate 1.
8, the slider T contacts the rear end of the slot M of the guide plate 14, and the upper arm 13 of the lever 12 is connected to the front part of the rear loading platform via a rotation axis, and the lever 12 cannot be rotated clockwise, so the universal joint E connecting the hydraulic cylinder and lever 12 cannot be moved forward.

The universal joint F at the front of the hydraulic cylinder is located below the line connecting the hinge A and the universal joint E, so when the hydraulic cylinder is retracted, the universal joint F pulls the mounting part 10 upwards, and the front loading platform pulls up the hinge A. The rear end of the front loading platform is separated from the stopper 21 by rotating counterclockwise as a rotation axis, and the stopper is rotated by 90 degrees to allow the front loading platform to rotate clockwise.

”The front loading platform rotates clockwise around hinge A due to the weight of the front loading platform and the weight of the car applied to the rear wheels.The oil discharge port of the hydraulic cylinder is narrowed, the hydraulic cylinder is used as a brake, and the hydraulic cylinder Slow down the extension speed of the front loading platform so that it rotates at a low speed.

The slider S attached to the attachment part comes into contact with the lower end of the slot L of the stop plate 11 attached to the rear part of the front longitudinal beam 2 via the front support part 19, and the rotation of the front loading platform is stopped.

After that, make the oil discharge port of the hydraulic cylinder to the normal width.

When the hydraulic cylinder is extended, the lever 12 is moved around the rotation shaft C attached to the front part of the rear longitudinal girder 5 via the rear support part 20.
rotates counterclockwise, the rear loading platform 9 moves forward, and rotates clockwise so that the front part contacts the support base 11 and the rear slider T contacts the front end of the slot M.

Then, set the switching valve of the hydraulic cylinder to "neutral".

When both the front and rear loading platforms are tilted, when the switching valve is switched to "pull", the hydraulic cylinder 15 contracts and the lever 12
rotates clockwise, the front part of the rear loading platform 9 comes into contact with the maintenance plate 18, and the rear loading platform 9 is fixed to the rear longitudinal beam 5.

Therefore, the position of the universal joint E is also fixed, and when the hydraulic cylinder 15 is further retracted, the front loading platform 8 rotates counterclockwise and becomes horizontal, and the stopper 21 is turned to be placed under the front loading platform 8.

Switch the selector valve to "neutral" and unload the vehicle loaded on the front and rear loading platforms.

When both the front and rear loading platforms are horizontal, turn the selector valve ``
If you accidentally switch to the pull position, the hydraulic cylinder will retract and the front loading platform will rotate counterclockwise.

However, since the universal joint F cannot extend above the line connecting the hinge A and the universal joint E, the avant-garde force rotates a little and then stops.

In addition, when the front and rear loading platforms are tilted, even if you accidentally switch the switching valve to "push", the front and rear loading platforms will each
1 and the support platform 17, the front and rear cargo platforms cannot rotate.

In the first embodiment, even if the switching valve is erroneously operated as described above, the loaded automobile will not be damaged by a collision.

Note that since the slot M is a straight line, the guide plate 14 can be easily manufactured.

As previously described about the operation of the first embodiment, when both the front and rear loading platforms are tilted, the switching valve is
When switching to "Pull", the rear loading platform becomes horizontal first, and then the front loading platform becomes horizontal.

The reason for this will be explained based on FIG.

The front and rear loading platforms shown in Figure 2 with dash-dotted lines are the front and rear loading platforms that can be used to load automobiles.

The upper arm 13 of the lever is configured such that the lever 12 attached to the inclined rear loading platform can be turned clockwise with a tension less than the tension of the hydraulic cylinder required to turn the inclined front loading platform counterclockwise. For the length of the lower arm 1
Select the length of 6.

Therefore, when the hydraulic cylinder is retracted, the inclined rear loading platform becomes horizontal, the front part of the rear loading platform contacts the maintenance plate 18, the rear slider T is restrained by the slot M of the guide plate 14, and the lever 12 is rotated. The moving axis C is fixed to the rear longitudinal girder 5, the rotation axis is fixed to the rear loading platform, and the universal joint E cannot be moved. Therefore, the hydraulic cylinder moves the mounting part 10 with a tension greater than the tension that moves the rear loading platform. Pull it and turn the front loading platform counterclockwise to make the front loading platform horizontal, turn the stopper 21, and insert it into the lower surface of the rear end of the front loading platform.

Then, set the switching valve to "neutral".

In the second and third embodiments, the inclination and length of the lower rear part and the rear raised part of the slot M can be selected.

It has the effect of making it easier to move the rear cargo bed at the beginning of its movement and making it easier to stop at the end.

The third embodiment has the same effects as the second embodiment.

Since the inclination of the slot changes continuously, no impact force is applied to the rotation axis, and there is little wear on the rotation axis D, rotation axis C1, universal joint E, etc., which has the advantage of a long service life.

The distance between the body of a car loaded on the platform of a car carrier, the structure of the car carrier, and the adjacent loaded car is 5.
Since the weight is about 10 to 10 oz, you have to concentrate your attention when loading and unloading a car onto the loading platform.

In this device, the front and rear loading platforms are operated by one hydraulic cylinder (on one side).However, since the front and rear loading platforms do not move at the same time, when operating the hydraulic cylinder, the moving loading platform Advantages: When loading or unloading a car, even if two loading platforms are moved by operating one hydraulic cylinder (on one side), the car will hardly come into contact with other cars or car carriers. There is.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the upper loading platform with the front part and one side omitted, showing the first embodiment of this invention, and FIG. 2 is the second embodiment of the invention.
3 is an enlarged view showing the relationship between the slider S and the slot L, FIG. 4 is an enlarged view showing the relationship between the rear longitudinal girder and the lever, and FIG. FIG. 6 is an enlarged view showing the relationship between the slider T and slot M in the third embodiment. A is the hinge, B, C, and D are the rotation axes, and E and F are the universal joints.
S and T are sliders, L and M are slots, 1 is the front fixed floor,
2 is the front longitudinal girder, 3 is the middle fixed bed, 4 is the front hole, 5 is the rear longitudinal girder,
6 is the rear fixed floor, γ is the rear hole, 8 is the front loading platform, 9 is the rear loading platform,
10 is a mounting part, 11 is a stop plate, 12 is a lever, 13 is an upper arm, 14 is a guide plate, 15 is a hydraulic cylinder, 16 is a lower arm 17 is a support stand, 18 is a maintenance plate, 19 is a front support part, 20 21 is a rear support portion, and 21 is a stopper.

Claims (1)

[Claims for Utility Model Registration] ■ Front hole surrounded by a front fixed bed 1, a front longitudinal girder 2 fixed to both sides of the rear end of the front fixed bed, and an intermediate fixed bed 3 fixed to the rear end of the front longitudinal girder. 4, an intermediate fixed bed 3, and a rear longitudinal girder 5 fixed to both sides of the rear end of the intermediate fixed bed. A rear hole portion 7 surrounded by a rear fixed bed 6 fixed to the rear end of the rear longitudinal girder
In the upper loading platform of a car carrier, which is equipped with a front loading platform 8 and a rear loading platform 9 inserted into the front hole 4 and the rear hole 7, respectively, the front end of the front loading platform 8 and the rear end of the front fixed floor 1 are connected by a hinge A. A triangular plate-shaped mounting part 10 is provided on the lower surface of the rear outside of the front loading platform 8, a cylindrical slider S is provided protruding from the outside of the mounting part 10, and a stop plate 11 with a slot L is connected to the rotation axis B. in,
Attach it to the rear lower part of the front longitudinal beam 2, insert the slider S into the slot L, and attach it to the inclined rear loading platform with a tension smaller than the tension of the hydraulic cylinder that allows the inclined front loading platform to rotate counterclockwise. lever 12 can be rotated clockwise,
The length of the lower arm 16 is selected relative to the length of the upper arm 13, and the bent part of the approximately "<"-shaped lever 12 is shaped like a chevron at the front part of the rear vertical beam 5 at the rotation axis C. It is installed forward, and the tip of the upper arm 13 of the lever 12 is connected to the rotation axis.
Connected to the front part of the rear loading platform 9, a slider T is provided protruding from the rear of the rear loading platform 9, the slider T is inserted into the slot M of the guide plate 14 provided at the rear of the rear vertical beam 5, and the hydraulic cylinder One end of the lever 15 is connected to the tip of the lower arm 16 of the lever 12 with a universal joint E, and when the front and rear loading platforms are horizontal, the position of the universal joint F is the same as the position of the universal joint E and the position of the hinge A. The other end of the hydraulic cylinder should be connected to the above mounting part 1 so that it is located further downward.
0 with a universal joint F, and when the rear loading platform is tilted, a support stand 17 that supports the front part of the rear loading platform 9 is provided on the upper surface of the side of the intermediate fixed floor 3 to maintain the rear loading platform 9 horizontally. Plate 18,
An upper loading platform of a car transport vehicle in which the front and rear loading platforms are linked, characterized by being provided at the front part of the rear longitudinal beam 5. 2. The upper loading platform of a motor vehicle transport vehicle according to claim 1, wherein the lower surface of the slot M is horizontal. 3. Slot) The upper loading platform of an automatic transport vehicle according to claim 1 of the utility model registration claim, wherein the lower surface of M has a downward downward slope at the front and an upward downward slope at the rear. 4. The upper loading platform of a motor vehicle transport vehicle according to claim 1, wherein the lower surface of slot M is a concave arc.