JPH10250990A - Rear-view mirror device for crane truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the interference of a boom or a jib with a rear-view device, and improve the turning operability of the rear-view mirror device by installing the rear-view mirror device on a travel truck so as to be erectable/prostratable, and maintaining the device in such a state as prostrated at a position free from interference with the boom. SOLUTION: A support pole 2 is set in an erect mode during the motion of a travel truck, and erected via an operator's operation. Also, the support pole 2, upon arrival at an erect position, is positioned with the positioning stopper of the rotary support part of a boss, and during the slewing of a boom, the support pole 2 in an erect state is prostrated. The support pole 2 is rotated toward the front of the travel truck about the rotary support part of the boss as a fulcrum and made to part from the slewing position of a boom at a low angle. Furthermore, when the boom is required to be operated at a low angle along a horizontal direction, an operation is combined so as to combine a rotary table with a base in a horizontal direction, and the reflecting mirrors E and F of the prostrated support pole 2 are separated toward both breadthwise sides along a horizontal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rearview mirror device mounted on a crane truck, and more particularly, to a rearview mirror device mounted on a crane truck.
The present invention relates to a structure for preventing interference between a turning boom and a rearview mirror.

[0002]

2. Description of the Related Art As is well known, a vehicle capable of traveling on a public road is equipped with a rearview mirror for confirming the safety of the rear of the vehicle while traveling. The wheel crane, which is one of the vehicles, has a structure in which the traveling operation of the traveling vehicle and the operation of the crane can be performed at the driver's seat of the rotating platform installed on the traveling vehicle. A rearview mirror is arranged outside. 7 and 8 show a rough terrain crane which is one of wheel cranes. In this crane, a rearview mirror A is provided in front of a driver's seat B with respect to a support pole D fixed to a traveling carriage C. A reflecting mirror E for confirmation and a reflecting mirror F for downward confirmation are attached.

[0003]

By the way, in the case of the above rough terrain crane, the rearview mirror is provided on the upper surface of the traveling vehicle in order to ensure visibility from the driver's seat installed on the traveling vehicle. The reflecting mirror is positioned at a considerably high position from the camera. For this reason, when trying to turn the boom at a low angle, the rearview mirror and the boom may interfere with each other. Therefore, when performing a boom operation, particularly a turning operation at a low angle, it is necessary to raise and lower the boom so as not to interfere with the rearview mirror, and there is a problem that the workability is poor for the operator. Also, in the case of a crane equipped with a horizontal swing type jib that can swing the hook block at the top of the boom in the horizontal direction,
When the jib is stored or mounted, a part of the jib may interfere with the rearview mirror. Therefore, the operator has to move the jib so as not to interfere with the jib, so that the operation of storing or mounting the jib is troublesome.

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the conventional rearview mirror device, an object of the present invention is to provide a rearview mirror of a crane truck capable of preventing interference with a boom or a jib during turning operation of the crane and improving turning operation. It is to provide a device.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a swivel having a boom that can be raised and lowered is installed on a traveling bogie, and the traveling operation of the traveling bogie and the turning of the swivel are performed. A rearview mirror device for a crane vehicle that performs a turning operation using the same driver's seat, wherein the rearview mirror device is provided so as to be able to be turned upside down with respect to the traveling vehicle, and interferes with the boom when the boom is turned at a low angle. It is characterized in that it is maintained in a position where it does not fall.

According to a second aspect of the present invention, in the rearview mirror device for a crane vehicle according to the first aspect, the rearview mirror device is swingably supported with respect to the traveling vehicle.

According to a third aspect of the present invention, a swivel having a boom capable of raising and lowering is installed on the traveling bogie, and the traveling operation of the traveling bogie and the swiveling operation of the swivel are performed by the same driver's seat. A mirror device, wherein the rear-view mirror device is provided detachably with respect to the traveling vehicle,
It is characterized in that the boom can be detached from the traveling carriage when the boom is turned at a low angle.

[0008]

According to the first and second aspects of the present invention, since the rearview mirror device is provided so as to be able to be turned upside down with respect to the traveling vehicle, the rearview mirror device is tilted to a position where it does not interfere with the boom prior to turning of the boom. By doing so, interference with the boom can be prevented. In particular, according to the second aspect of the present invention, it is possible to set the rear-view mirror device in a tilted state only by swinging. This prevents interference with the rearview mirror device even when the boom is turned at a low angle,
The operator need only pay attention to the turning operation. Further, after the operation of the crane is completed, the rearview device can be swung to raise the rearview mirror device, so that it is possible to confirm the rearward during normal traveling.

According to the third aspect of the present invention, interference with the boom can be prevented by simply removing the rear-view mirror device from the traveling vehicle. In addition, by attaching the rearview mirror device to the traveling carriage, it is possible to confirm the rearward during traveling.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIGS. 1 to 5 show an embodiment of the rearview mirror device according to the first and second aspects of the present invention.
Shows only the front side of the traveling vehicle (for convenience, the reference symbol C shown in FIGS. 7 and 8 is used) in the vehicle body C1. In the figure, a rearview mirror device 1 is provided so as to be able to fall forward with respect to the front of a vehicle body C1. That is, the rearview mirror device 1 has the leg 1A that can be seated on the vehicle body C1 side,
The lower end of the support pole 2 is fixed to the leg 1A. On the upper end side of the support pole 2, a reflecting mirror for backward confirmation (use the symbol E shown in FIGS. 7 and 8 for convenience) and a reflecting mirror for downward confirmation (characters shown in FIGS. 7 and 8 for convenience) F is used).

In FIG. 2, the leg seat 1A of the rear-view mirror device 1 is integrated by inserting the lower end of the support pole 2 and is hinged by a hinge 3 integrated with the front lower surface of the traveling vehicle C. It is supported as possible, and furthermore,
It faces the bracket 4 made of angle pieces arranged on the rear lower surface of the traveling vehicle C. The hinge part 3 is constituted by a hinge, one of which is integrated with the vehicle body C1 and the other of which is integrated with the leg 1A. The swing angle of the hinge portion 3 is set to an angle at which the reflecting mirrors E and F can be positioned so as not to interfere with the boom when the support pole 2 falls down. When the bracket 4 stands up, the vehicle body C1
A through-hole is formed in the rising piece as an engaging portion with the locking member 5 provided on the side. The locking member 5 includes a ring-shaped handle 5A and a rod 5B integrated with the handle 5A, and is formed on the support bracket 6 and the bracket 4 fixed to the vehicle body C1. It can be made into a through hole. When the locking member 5 is inserted through the bracket 4 and the support bracket 6, the locking member 5 is prevented from coming off by the split pin 7 fitted to the rod portion 5B. A backing plate 8 is arranged on the lower surface of the bracket 4 to perform level matching between the front part and the rear part of the leg 1A when standing up. In addition, it is also possible to arrange an elastic body such as rubber on the surface of the backing plate 9 to provide a vibration-proof function.

In this embodiment, the rearview mirror device 1 is maintained in an upright state when the traveling vehicle C travels because of the above-described configuration. That is, the support pole 2 of the rear-view mirror device 1 is swung in the upright direction by the hinge portion 3 of the leg 1A, and is upright when the locking member 5 is inserted into the bracket 4 and the support bracket 6 in the upright state. Held in state. On the other hand, when the boom is turned, the split pin 7 is removed from the rod portion 5B of the locking member 5 so that the bracket 4 can be freely swung from the support bracket 6. Therefore, as shown by a two-dot chain line in FIG. 1, the support pole 2 can be tilted to the swing allowable angle of the hinge 3. Thus, the support pole 2 is held at an angle at which the reflecting mirrors E and F can be positioned at a position that does not interfere with the boom.

Next, a description will be given of a modification of the above-described rearview mirror device in which the rearview mirror device is turned upside down. The structure shown in FIG. 3 is a structure that can rotate the support pole 2 in the tilting direction and the horizontal direction. The support pole 2 has a boss 2A at its lower end, and the boss 2A has The shaft 9 is inserted. The rotating shaft 9 is rotatably supported by a turntable 10 as shown in FIG.
Is rotatably supported by a base 11 provided on the vehicle body C1. Although not shown, the boss portion 2A and the rotation support portion of the turntable 10 are provided with a friction member interposed therebetween so as not to rotate without an operation force applied by an operator. , A positioning stopper for defining the standing position of the support pole 2 is provided. In this structure, the support pole 2 is set in the upright state when the traveling vehicle C travels, but at the time of setting, the support pole 2 is raised by the operation of the operator. When the support pole 2 is raised and reaches the upright position, it is positioned at that position by a positioning stopper provided on the rotation support portion of the boss 2A. On the other hand, when turning the boom, the support pole 2 in the upright state is lowered. At this time, the support pole 2 is simply rotated toward the front side of the traveling vehicle C with the rotation support portion of the boss portion 2A as a fulcrum, and FIG.
As shown by the two-dot chain line, it is only necessary to move the boom away from the turning position of the boom at a low angle, but if it is necessary to operate the boom in a horizontal direction at a low angle, the base 1
The operation of rotating the turntable 10 in the horizontal direction is combined with the operation of the rotary table 1. As a result, the reflecting mirrors E and F of the support pole 2 in the collapsed state can be separated horizontally on both sides in the vehicle width direction of the traveling vehicle C, so that the turning angle of the boom maintained at a low angle can be increased. it can.

FIG. 5 is a view showing still another example. In this example, the boss 2A 'of the support pole 2 is
It is rotatably supported by a base 11 ′ fixed to 1. In the rotation support portion in this case, FIG.
As in the example shown in FIG. 4, a positioning stopper and a friction member for positioning the support pole 2 in the upright position are interposed. In particular, in this example, the positional relationship between the base 11 'and the boss 2A'
A 'is a relationship in which the boss 2A' is located on the surface corresponding to the outer side in the vehicle width direction among the surfaces of the base 11 '. Thus, unlike the examples shown in FIGS. 3 and 4, the boss 2A '
Without rotating the boom in the horizontal direction, the position where the support pole 2 falls can be located outside the range occupied by the base 11 'in the vehicle width direction, so that the turning angle when the boom turns at a low angle can be obtained. Can be expanded.

Next, an embodiment of the present invention will be described. The invention according to claim 3 is characterized in that the rearview mirror device is provided detachably with respect to the traveling vehicle. That is, in FIG. 6A, the support pole 20 used in the rearview mirror device 1 'is branched into two branches on the way from the legs to the mounting position of the reflecting mirror, and the pipe is overlapped again near the mounting position of the reflecting mirror. It is divided in the extension direction at the forked portion. One of the divided support poles 20A includes a leg fixed to the vehicle body C1, and the other of the divided support poles 20B has a leg 20B.
Reflecting mirrors E and F are attached to the upper end side. One of the divided support poles 20A has a length from the leg to the upper end that can be positioned at a position lower than the turning position of the boom at a low angle and at a position that does not interfere with the boom. The other 2 of the divided support poles 20
OB has a sheath tube 21 integrated with its lower end. As shown in FIG. 6 (B), the sheath tube 21 has a length including an insertion allowance for one of the divided support poles 20A, and a portion where one of the support poles 20A is inserted is provided in a radial direction. A through hole is formed, and the operation rod 22 is inserted into the through hole. Since the sheath tube 21 is integrated with the other side 20B of the branched support pole 20, a through hole through which the operation rod 22 can be inserted is formed so that its center is aligned with the axis of the operation rod 21. The operating rod 22 includes a ring-shaped handle portion 22A and the handle portion 2A.
2A and a bolt 22B having one axial end fixed thereto. For this reason, in the sheath tube 21, the operation rod 2
Tube 2 located on the side where the tip of the second bolt 22B is exposed
A nut 23 is fixed to the surface of the through hole 1.

Since the present embodiment has the above configuration,
Since the support pole 20 is made upright by inserting the other support pole 20B of the divided support pole 20 into the sheath tube 14, the operation pole 22 is inserted and fastened in this state, so that the support pole 20 is maintained in the upright state. It is possible to check the rear when traveling. On the other hand, prior to the turning operation of the boom, the operating rod 22 is withdrawn from the sheath tube 21 and the divided support pole 20 is separated.
When the sheath tube 14 is removed from one of the support poles 20A, only one of the divided support poles 20A becomes 20A. Since the upper end of one of the divided support poles 20A is located at a position lower than the turning height of the boom at a low angle, interference with the turning boom is prevented.

[0017]

As described above, claims 1 and 2
According to the described invention, the rearview mirror device is provided so as to be able to be turned upside down with respect to the traveling vehicle at a standing position and at a position not interfering with the boom. Interference can be prevented. In particular, according to the second aspect of the present invention, it is possible to set the rear-view mirror device in a tilted state only by swinging. Accordingly, interference with the rearview mirror device does not occur even when the boom is turned at a low angle, so that the operator only needs to pay attention to the turning operation alone, thereby improving workability. . Also, when storing or installing the horizontal swing-out jib with the boom maintained at a low angle, the rearview mirror device can be maintained in a position where it does not interfere with the boom, so even if the jib moves in the horizontal direction. Interference with the rearview mirror device can be prevented. This eliminates the need to step down from the driver's seat and perform the avoidance operation between the jib and the rear-view mirror device when storing or mounting the horizontal swing jib, thereby improving the workability without forcing the operator to perform troublesome work. Becomes possible.

According to the third aspect of the invention, interference with the boom can be prevented by simply removing the rearview mirror device from the traveling vehicle. In particular, since the rearview mirror device once removed cannot be attached until the turning operation is completed, it is not necessary to attach and detach the rearview mirror device one by one, so that the operation is not interrupted. In addition, by attaching the rearview mirror device to the traveling carriage, it is possible to confirm the rearward during traveling.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a front portion of a traveling vehicle for explaining a configuration of a rearview mirror device according to the first and second aspects of the present invention.

FIG. 2 is a partial side view for explaining a main structure of the rearview mirror device shown in FIG. 1;

FIG. 3 is a schematic diagram showing a front part of a traveling vehicle for explaining a modification of the main part structure of the rearview mirror device shown in FIG. 1;

4A and 4B are diagrams for explaining a configuration of a main part structure shown in FIG. 3, wherein FIG. 4A is a front view, and FIG.
It is an arrow view of the direction shown by the code | symbol B.

5A and 5B are views for explaining another modification of the main structure of the rearview mirror device shown in FIG. 1, wherein FIG. 5A is a front view, and FIG. It is an arrow view of the direction shown by.

FIG. 6 is a view showing an embodiment of a rearview mirror device according to the invention described in claim 3, and FIG. 6 (A) is a schematic view showing a front portion of a traveling vehicle for explaining a main structure of the rearview mirror device. (B) is an enlarged cross-sectional view of a portion indicated by reference numeral B in (A).

FIG. 7 is a side view for explaining an example of a crane truck.

FIG. 8 is a plan view of the crane truck shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rearview mirror device 2, 20 Support pole 2A, 2A 'Boss part supported by rotation 3 Hinge part 4 Bracket 5 Locking member 6 Support bracket 8 Backing plate 9 Rotating shaft 10 Rotating table 11 Base 20A The divided support pole On the other hand 20B The other of the divided support poles 21 Sheath tube 22 Operation rod C Carriage C1 Car body E, F Reflector

Claims (3)

[Claims] 1. A rearview mirror device for a crane vehicle, wherein a swivel having a boom that can be raised and lowered is installed on a travel bogie, and a traveling operation of the travel bogie and a swivel operation of the swivel are performed by the same driver seat. The rearview mirror device is provided so as to be capable of falling with respect to the traveling bogie, and is maintained at a position where the rearview mirror does not interfere with the boom when the boom is turned at a low angle. Mirror device. 2. The rearview mirror device for a mobile crane according to claim 1, wherein the rearview mirror device is swingably supported with respect to the traveling vehicle. 3. A rearview mirror device for a crane truck, wherein a swivel having a boom that can be raised and lowered is installed on the travel bogie, and a traveling operation of the travel bogie and a swivel operation of the swivel are performed by a same driver seat. The rearview mirror device for a crane truck, wherein the rearview mirror device is provided detachably with respect to the traveling vehicle, and is detachable from the traveling vehicle when the boom is turned at a low angle.