JP2933296B2 - Body load retention safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary bogie for transporting a vehicle, which is used for performing inspection and repair of various parts of the vehicle while the bogie is separated from a vehicle at a vehicle inspection and repairing yard, and in particular, a failure of a vehicle lifting mechanism system. The present invention relates to a vehicle body load holding safety device for preventing a vehicle body from lowering due to the like.

[0002]

2. Description of the Related Art FIGS. 11 and 12 show an example of a temporary bogie for transferring a vehicle body (hereinafter referred to as a temporary bogie) having a self-propelled function. This temporary trolley has an elevator frame 3 provided with a traveling device composed of wheels and a wheel drive mechanism and the like. Four cylinders 4 connected to the upper part of the underframe 2 and a hydraulic pump 5 for driving the cylinders 4 are provided, and the hydraulic pressure from the hydraulic pump 5 is changed by operating the pendant 6 for raising and lowering a hydraulic circuit (not shown). The air is supplied to and discharged from each cylinder 4 via the elevating support base 3, and the vehicle body 1 is raised and lowered, and travels by operating the travel pendant 7. The elevating support table 3 is guided by guide guides provided on the underframe 2 via guide columns, and moves up and down while maintaining a horizontal state. In addition,
Reference numeral 8 denotes a lifting operation cable for supplying power to the hydraulic pump 5 and the like.

[0003] The temporary bogie constructed as described above is a vehicle 1
It is used for maintenance and inspection work of each device (not shown) mounted at the lower part of the device. Normally, the space around the underfloor equipment and the bogie around the vehicle is small and workability is poor. Therefore, the work space is often raised as much as possible by raising the body 1. For this reason, it is necessary to maintain the height of the vehicle body 1 in a raised state for a long time.

[0004] Therefore, a backflow prevention function is added to the hydraulic circuit including the cylinder 4 so as to maintain the height of the vehicle body 1 even when the power is lost, thereby ensuring safety. on the other hand,
In the event of a failure such as breakage of the hydraulic hose, there is a risk that the vehicle body 1 will fall. Therefore, as a preventive measure, a fall prevention holder is provided in an empty space between the lifting support 3 and the underframe 2. 9 to prevent danger in case of emergency.

[0005]

However, since the fall-preventing holder 9 must maintain strength enough to withstand the load of the vehicle body 1, the structure is complicated, large, and very heavy. It was getting bigger. For this reason, it is very troublesome and inefficient to attach and remove the fall prevention holder 9 every time the vehicle body 1 is raised and lowered, and there is also a problem in safety. Therefore, improvement has been desired.

Therefore, an object of the present invention is to improve the work efficiency and safety by eliminating the work of attaching and detaching the heavy fall prevention holder every time the vehicle body is raised and lowered, and to improve the vehicle body transportation. An object of the present invention is to provide a vehicle body load holding safety device which simplifies work and improves efficiency by eliminating the trouble of carrying a fall prevention holder every time a temporary carriage is transported.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a temporary carriage provided with a lifting mechanism for vertically adjusting the body by providing a frame for supporting the body from which the carriage has been removed. Equipped with a plurality of links, one end of which is rotatably connected to the underframe and the other end of which is rotatably and movably connected to the gantry about the horizontal axis, and which rotates in conjunction with the lifting mechanism. The turning surfaces of the paired links can be displaced so as to be flush with each other when the vehicle body rises to a predetermined position.

[0008]

When the vehicle body is in the lowered position, the plurality of links are contained in a narrow space between the gantry and the underframe. When the vehicle body starts to be raised via the lifting mechanism, it starts rotating in conjunction with the rise of the gantry. At this time, each link does not interfere.

When the vehicle body has been raised to a predetermined position,
Since the rotating surfaces of the paired links are not the same, the load of the vehicle body does not act on each link. Therefore, the link is moved, and the movement of the link is restricted by setting the turning surfaces of the paired links to be the same. Therefore, even if any trouble occurs in the elevating mechanism, the vehicle body load is supported by the link whose movement is restricted, so that the falling can be prevented.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of the present invention, and FIG.
FIG. 2 is a top view as seen in the direction of the arrow along the line AA in FIG. 1.

1 and 2, 1 is a vehicle body, 2 is an underframe, 3 is a lifting support, 4 is a cylinder, and 10 is a vehicle body load holding mounted between the underframe 2 and the lifting support 3. Indicates a safety device.

The vehicle body load holding safety device 10 has two links 11a, 11a, and a moving link receiver which rotatably connects one end (upper end in FIG. 1) of each link 11a via a pin 12. 13a and a movable link receiver 13b that rotatably connects one end (upper end in FIG. 1) of each link 11b via a pin 12.
And the other end (lower end in FIG. 1) of each link 11a
And a fixed link receiver 14b rotatably supporting the other end (the lower end in FIG. 1) of each link 11b via a pin 12. The moving link receivers 13a and 13b are connected to the lifting support 3 via the pins 15.
Movably connected to

In the above configuration, the fixed link receiver 12a
Is fixed to a bracket 2a protruding from the upper surface of the underframe 2, and does not interfere with the link 11b on the other side.
To the running direction of the temporary carriage is provided with a L ₁ white move the pin 12 to be placed offset perpendicularly. Fixed link receiver
12b is fixed to a bracket 2b protruding from the upper surface of the underframe 2, and is moved to the pin 12 so as to be displaced in a direction perpendicular to the traveling direction of the temporary carriage so as not to interfere with the link 11a on the other side. a is provided white L _2. here,
The moving margins L ₁ and L ₂ have the same size and are provided on different sides.

The moving link receiver 13a is connected to the lifting support 3
It can be moved along the groove 16a provided in the groove. In order to make this movement smooth and to prevent the moving link receiver 13a from dropping off from the elevating support base 3, as shown in FIG.
18 is rotatably mounted. Similarly, the moving link receiver 13b
Can move along the groove 16b provided in the lifting support 3. This movement is smooth and the movement link
Similarly, in order to prevent 13b from dropping off from the elevating support 3, the pin 15 has a roller 18 having an inverted trapezoidal cross section via a bush 17.
Is rotatably mounted.

The groove 16a has an L-shape in plan view having a long side and a short side, and an inverted octagon in cross section so that the roller 18 can move smoothly. Similarly, the above-mentioned groove 16b has an L-shape in plan view having a long side and a short side, and has an inverted octagon in cross-sectional shape which enables the above-mentioned roller 18 to move smoothly. The long side of the groove 16a has a length that allows the movement of the moving link receiver 13a when the lifting support 3 moves up and down. Similarly, the long side of the groove 16b has a length that allows the movement of the moving link receiver 13b when the lifting support 3 moves up and down. further,
Each short side of the grooves 16a and 16b has a length that allows the links 11a and 11b, which are on the axes shifted from each other, to move on the same axis after ascending the elevating support base 3, and thus allowing this movement.

Next, the operation of the embodiment configured as described above will be described. First, as shown in FIG. 4, when the vehicle body 1 is at the lowered position, the links 11a and 11b are located on axes that are shifted from each other in a horizontal state, and the link 11a and 11b are located between the lifting support 3 and the brackets 2a and 2b of the temporary carriage 2. In the space. This state is as shown in FIG. 5 when viewed from above. Next, when the lifting support 3 starts to be lifted by the cylinder 4, the moving link receivers 13a, 13b move the rollers 18, 18 attached to the respective pins 15, 15 into the grooves 16a, 16b of the lifting support 3.
Are guided while being guided by the long sides, and slide while sliding on the lower surface of the lifting support 3. Accordingly, links 11a and 11
b makes an arc movement centering on the pins 12 of the fixed link receivers 14a and 14b as shown by the two-dot chain line arc in FIG.
The link 11a at the time when the lifting support 3 has finished ascending,
11b is in a posture inclined in the shape of an octagon, and the position viewed from the top is a pin as shown in FIG. 7 (only one side is shown).
15 have moved to the intersections of the long sides and short sides of the grooves 16a, 16b.

Since the load of the vehicle body 1 does not act on the links 11a and 11b during the arc movement as described above, the links 11a and 11b are manually slid on the same axis when the lifting support 3 has finished ascending. By this slide, the movable link receivers 13a and 13b are positioned so as to be back to back. 1 and 2 show this state. When the positioning is performed in this manner, the movements of the moving link receivers 13a and 13b are mutually restricted, and the link system is locked. Therefore, even if the support function of the cylinder 4 is lost, the link portion can support the vehicle body load, thereby preventing the vehicle body from falling. When the vehicle body 1 descends normally, first, the link 11
a, 11b is slid in the opposite direction to unlock the link system. Thereafter, the lifting support 3 is lowered via the lifting mechanism. Link 11a,
11b rotates in the opposite direction, and the lifting support 3 and the bracket 2
It fits between a and 2b.

Therefore, according to the embodiment configured as described above, the vehicle body can be prevented from falling in a limited narrow temporary trolley, and operates in conjunction with the vertical movement of the vehicle body, so that new power is added. Therefore, it is possible to obtain a reliable and highly reliable safety device only by one-touch operation.

The present invention is not limited to the above-described embodiment, but can be variously modified. The embodiment shown in FIGS. 8 and 9 (only one side is shown) is not
The brackets 2c and 2d are provided projecting from the upper surface of the bracket 2c and 2d, and instead of the fixed link receivers 14a and 14b in the above-described embodiment, the brackets 2c and 2d are turned around the vertical axis as shown by an arrow 19 in FIG. Movable link receivers 20a, 20
Install b. A pin 1 is attached to the rotation link receivers 20a and 20b.
The ends of the links 11c and 11d are rotatably supported via the links 2 and 12.

In this embodiment, a lifting support (not shown) is used.
With the rise of the link, the links 11c and 11d become the rotating link receiver 20a,
An arcing motion and a swinging motion are performed around the pin 20b and the pins 12, 12. When the lifting support 3 has finished ascending, it is manually swung to position the moving link receivers 13c and 13d so that they are back to back. Even with such a configuration, the same effect as in the above-described embodiment can be obtained.

In the embodiment shown in FIG. 10 (only one side is shown), the restrained state of the links 11c and 11d in the above-described embodiments of FIGS. 8 and 9 is automatically switched. . That is, the rotary link receivers 20a, 20b
Are provided with links 21a and 21b, the free ends of the links 21a and 21b are connected by a connecting link 22, and a drive cylinder 23 is connected to an intermediate portion of the link 21a. Hydraulic pressure is supplied to the drive cylinder 23 from a hydraulic pump provided on the temporary carriage.

In this embodiment, when the lifting support 3 reaches the upper limit, the drive cylinder 23 is driven to swing the links 11c and 11d to move the link receivers 13c and 13d.
Are positioned so that they are back to back. Even with such a configuration, substantially the same effects as those of the above-described embodiments can be obtained.

[0023]

As described above, according to the present invention, a gantry for supporting a vehicle body is provided at an upper portion thereof. A plurality of rotating links are mounted, and the rotating surfaces of the paired links are configured to be displaceable so as to become the same surface when the vehicle body rises to a predetermined position, so that the links are restrained, Each time the vehicle body is raised and lowered, the work of attaching and removing the heavy fall prevention holder is not required, and the efficiency and safety of the work can be improved. The present invention can provide a vehicle body load holding safety device that simplifies work and improves efficiency by eliminating the trouble of carrying the fall prevention holder.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a top view as seen in the direction of the arrow along the line AA in FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is an explanatory diagram of the operation of one embodiment of the present invention.

FIG. 5 is an explanatory diagram of an operation different from that of FIG. 4 in the embodiment of the present invention.

FIG. 6 is an explanatory diagram of an operation different from those in FIGS. 4 and 5 in one embodiment of the present invention.

FIG. 7 is an explanatory view of an operation of the embodiment of the present invention which is different from FIGS. 4, 5 and 6;

FIG. 8 is a front view showing another embodiment of the present invention.

FIG. 9 is a top view showing a part cut along the line CC of FIG. 8;

FIG. 10 is a top view showing a part of still another embodiment of the present invention.

FIG. 11 is a front view showing an example of a conventional vehicle body transfer temporary carriage.

FIG. 12 is a side view showing an example of a conventional vehicle body temporary carriage.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body, 2 ... Underframe, 2a, 2b ... Bracket, 3 ... Elevating support stand, 4 ... Cylinder, 9 ... Fall prevention holder, 11a,
11b link, 12 pin, 13a, 13b, 13c, 13d moving link receiver, 14a, 14b fixed link receiver, 15 pin, 16
a, 16b: groove, 18: roller, 20a, 20b: rotary link receiver, 21a, 21b: link, 22: connecting link, 23: drive cylinder.

Claims (3)

(57) [Claims] 1. A frame supporting a vehicle body from which a bogie has been removed is provided at an upper part thereof, and one end thereof is rotatable about a horizontal axis on a frame of a temporary bogie for transporting a vehicle body provided with an elevating mechanism for vertically adjusting the vehicle body. , The other end is rotatably and movably connected to the gantry about a horizontal axis, and includes a plurality of links that rotate in conjunction with the lifting mechanism. A vehicle body load holding safety device characterized in that the vehicle body is configured to be displaceable so as to be flush with each other when the vehicle body rises to a predetermined position, and to restrain the link. 2. A frame for supporting a vehicle body from which a bogie has been removed is provided at an upper portion thereof and provided with an elevating mechanism for vertically adjusting the vehicle body. A plurality of links that are rotatably connected, the other ends of which are rotatably and movably connected to the gantry about a horizontal axis, and that rotate in conjunction with the elevating mechanism; A vehicle body load holding safety device characterized in that a moving surface is configured to be displaceable so that it becomes the same surface when the vehicle body rises to a predetermined position, and the link is restrained. 3. The vehicle body load holding safety device according to claim 2, wherein the underframe-side connecting portions of the paired links are connected via a member and an auxiliary rotating device is connected to the member. When the vehicle body is lifted to a predetermined position via the auxiliary rotation device, the rotation surfaces of the paired links are made the same, and the links are restrained, so that the vehicle body load holding safety is provided. apparatus.