JPH09277866A - Carrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the transfer of a load, the positioning on an upper turning body and a loading/unloading work in a carrier. SOLUTION: An upper slewing body 12 is installed through a slewing gear 22 for a lower running body 11 provided with a motive power device 13. The upper surface of the upper slewing body 12 is made to the placing surface 45 of a carried load. The upper slewing body 12 has a lower frame 41 installed on the slewing gear 22 and an upper frame 42 installed elevatably for the lower frame 41. An elevating device 43 is installed between the lower fame 41 and the upper brame 42 and drives the upper frame 42 elevatingly. A crane device 44 is mounted on the upper slewing body 12 and installed on the upper slewing body 12 so as to be able to turn, telescope and derrick a boom 65.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transportation vehicle.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional carrier, which is an undercarriage.
11 and an upper revolving structure 12, and the vehicle power unit 13 is housed in the lower traveling structure 11 so that the upper space of the upper revolving structure 12 can be effectively utilized as a load carrying space.

The lower traveling body 11 has a sprocket 16 which is driven by a speed reducer (not shown) directly connected to a hydraulic motor 15 which is a traveling driving device, at one end of the traveling frame 14, and the other end of the traveling frame 14 as well. The idler 17 is attached to the sprocket 16 and the crawler belt 18 connected endlessly is wound around the outer circumference of the sprocket 16 and the idler 17.

The upper revolving structure 12 is rotatably mounted via a revolving bearing 23 constituting a revolving device 22 mounted on a support portion 21 at the upper end of the lower traveling structure 11. This upper swing body
The upper surface of 12 is formed flat so that a load can be loaded on the upper surface.

Here, the swivel bearing 23 of the swivel device 22 is rotatably provided with an inner ring 26 formed with an internal gear 25 with respect to an outer ring 24 fixed on the support portion 21 of the traveling frame 14. On the other hand, a hydraulic motor 28 is attached to the lower side of the reduction gear 27 fixed in the support portion 21, a pinion 29 is attached to the upper output shaft of the reduction gear 27, and the pinion 29 is the internal gear of the inner ring 26. The upper revolving structure 12 is engaged with the inner ring 26 by means of bolts (not shown).

Then, the hydraulic energy generated by the power unit 13 is connected to the hydraulic motor 28 via a pipe and a valve (not shown) and transmitted to the upper traveling body 12 so that the upper traveling body 12 pivots 360 ° with respect to the lower traveling body 11.

Similarly, hydraulic energy generated in the power unit 13 is transmitted to a hydraulic motor 15 mounted on the lower traveling body 11 via a pipe and a valve (not shown), so that a deceleration (not shown) directly connected to the hydraulic motor 15 is performed. The machine is driven, the sprocket 16 is rotated, and the transport vehicle travels.

Further, when using a carrier as a work carriage, as shown in FIG. 6, when mounting a load (member 31) at a place where the ceiling height is low and only the carrier can enter,
Since the height of the upper swing body 12 of the transport vehicle is unchanged, a stand 32 prepared separately is placed on the upper swing body 12, and the member 31 is mounted on the stand 32.
It is loaded on top and brought closer to the position near the height of the mounting portion 34 of the structure 33 which is the other side of the mounting, and at the end, the adjustment margin h of the mounting surface is raised by the human power or jack force by the worker 35. I am trying to attach it with. Here, when removing the member 31, the operation is performed in the reverse order of the above.

[0009]

This conventional carrier is
Since the upper revolving structure 12 is attached to the lower traveling structure 11 via the revolving bearing 23, the height of the loading platform on the upper revolving structure 12 on which a load is loaded does not change, and the carrier and other vehicles and equipment. When loading and unloading cargo between and, it is difficult to do so and work efficiency is poor.

Further, as shown in FIG. 6, when the carrier is used as a work cart, the height of the upper swing body 12 is constant, and therefore, when the delicate position of the load is to be adjusted, a human power, a jack or a chain is used. There is a problem that work efficiency is poor due to the need for blocks and the like, and the preparation of the gantry 32 and other equipment.

Further, when the load is loaded on the carrier vehicle, there is no equipment such as a crane in the vehicle body.
A loading / unloading machine such as a forklift is required.

The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to easily perform operations such as transshipment of loads, alignment on an upper swing body, loading and unloading. To do.

[0013]

According to a first aspect of the present invention, an upper revolving structure is provided to a lower traveling body equipped with a power unit through a revolving device, and an upper side surface of the upper revolving structure is provided. In a transport vehicle on which the load to be transported is placed, the upper revolving structure has a lower frame provided on the revolving device, an upper frame that can be raised and lowered with respect to the lower frame, and an upper frame with respect to the lower frame. It is a carrier equipped with a lifting device for lifting and lowering.

The height adjustment function of the upper frame is exerted by elevating and lowering the upper frame with respect to the lower frame by aligning the loading frame height of the upper frame with other vehicles and equipment. When the carrier is used as a work carriage, the load is delicately adjusted by raising and lowering the upper frame.

According to a second aspect of the present invention, in the vehicle according to the first aspect, the crane device is mounted on the upper swing body. Then, the crane device performs work such as loading and unloading on the upper swing body.

According to a third aspect of the present invention, in the transport vehicle according to the second aspect, the boom of the crane device is mounted on the upper swing body so as to be swingable, extendable and retractable. Then, the boom is swung, expanded and contracted, and raised and lowered to freely hoist and lower the load, and move three-dimensionally in the horizontal and vertical directions.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
It will be described with reference to FIGS. The same parts as those in the conventional example shown in FIGS. 5 and 6 are designated by the same reference numerals.

FIG. 1 and FIG. 2 show the basic posture of the carrier, which comprises a lower traveling body 11 mainly equipped with a traveling device for traveling the vehicle and a wide and flat structure on the lower traveling body 11. And an upper revolving superstructure 12 composed of a frame for loading a load.
A swivel device 22 for fully swiveling the upper swing body 12 by 360 ° is provided between the swivel device 12 and the swivel device 12.

The upper swing body 12 has a double structure frame,
A lower stage frame 41 provided on the swivel device 22 and an upper stage frame 42 provided so as to be able to move up and down with respect to the lower stage frame 41.
As shown in FIG. 3, it is formed by an elevating device (lift device) 43 for vertically moving the upper frame 42 with respect to the lower frame 41.

A crane device 44 for loading and unloading is mounted on the upper frame 42 of the upper swing body 12.

A power unit 13 is mounted on the lower traveling body 11. The power unit 13 is composed of an engine (not shown) and a hydraulic source such as a hydraulic pump driven by the engine. The power unit 13 allows the carrier vehicle to travel and the upper revolving structure 12 to rotate 360 °. In addition, the lifting device for the lower frame 41 of the upper swing body 12
43 is used to raise and lower the upper frame 42, and the crane device 44 is swung 360 ° on the upper swing structure 12 to extend, retract, and oscillate, and to generate power for operating various hydraulic actuators for winch hoisting and lowering, which will be described later. Let

Further, in order to transfer hydraulic energy generated by the power unit 13 mounted on the lower traveling unit 11 to the lifting device 43 and the crane unit 44 through hydraulic piping, the lower traveling unit 11 is
A rotary fluid coupling (not shown), that is, a rotary joint, is attached to the center of rotation between the upper revolving structure 12 and the upper revolving superstructure 12.

In the lower traveling body 11, a supporting portion 21 for mounting the upper revolving body 12 is mounted on a traveling frame 14 which constitutes a basic skeleton of a transport vehicle. At one end of the traveling frame 14, a sprocket 16 driven by a speed reducer (not shown) directly connected to a hydraulic motor 15 for traveling driving is attached,
Further, an idler 17 is attached to the other end, and an endless crawler belt 18 is wound around the outer peripheral portion of the sprocket 16 and the idler 17 to form a sprocket.
It is fitted and meshed with 16.

The upper revolving structure 12 is composed of two stages, a lower frame 41 and an upper frame 42.
Is a support portion 21 of the traveling frame 14 that constitutes the lower traveling body 11.
Is attached to the upper end portion of the slewing bearing 23 of the slewing device 22 attached to the upper end surface of the. On the other hand, on the upper frame 42, a loading surface 45 for loading a load is formed by a flat flat surface, except for the crane device 44.

The slewing bearing 23 of the slewing device 22 is provided between the support portion 21 of the traveling frame 14 and the lower stage frame 41 of the upper slewing body 12, and is similar to the conventional machine, that is, as shown in FIG. An inner ring 26 having an internal gear 25 formed therein is rotatably provided on an outer ring 24 of a slewing bearing 23 fixed on the supporting part 21, while a lower part of a reduction gear 27 fixed inside the supporting part 21 is provided. The hydraulic motor 28 is directly connected to this side, and the pinion 29 is attached to the upper output shaft of the speed reducer 27.
The lower stage frame 41 of the upper swing body 12 is attached to the inner ring 26 by bolts.

As shown in FIG. 3, the elevating device 43 includes two links 51a and 51b which are rotatable between a lower frame 41 and an upper frame 42 of the upper swing body 12 by a central pin 51c. A link mechanism 51 connected to the
One end of each of 51a and 51b is rotatably connected to the lower frame 41 and the upper frame 42 by fixing pins 52 and 53, and the other end of each link 51a and 51b is movable pins 54 and 55. Are rotatably and slidably connected to elongated holes 56 and 57 provided in the lower frame 41 and the upper frame 42, respectively. Further, a hydraulic cylinder 58 for raising and lowering drive is rotatably connected to the lower frame 41 and one link 51a by a pin 59 at a fixed position.

Here, in the embodiment shown in FIG. 3, the elevating device 43 is constituted by the link mechanism 51 and the hydraulic cylinder 58, but the present invention is not limited to this form, and the necessary elevating device is provided. If the amount can be obtained, for example, the elevating device 43 for elevating the upper frame 42 may be configured by only a plurality of hydraulic cylinders (hydraulic jacks).

As shown in FIG. 4, the crane device
44 is mounted on the upper frame 42 of the upper revolving structure 12 via columns 61. At the upper end of this column 61, a slewing bearing 62
A crane base 63 is mounted via the base 63, and a boom 64 having a telescopic structure, that is, a telescopic multi-stage structure is movably mounted on the base 63 by pins 64.

The slewing bearing 62 of the crane device 44 drives a gear provided on the outer ring of the slewing bearing 62 via a speed reducer (not shown) by a hydraulic motor 66 attached to the column 61,
The pedestal 63 mounted integrally with the outer ring is rotated 360 °.

Inside the boom 65, a hydraulic cylinder (not shown) is attached as a boom extending / contracting mechanism for extending / contracting the boom 65, and as a hoisting / lowering mechanism for hoisting the boom 65, a pedestal 63 is installed. A hoisting hydraulic cylinder 67 is mounted between the bottom plate and the base of the boom 65.

Further, a winch 71 rotated by a hydraulic motor is attached to the base of the boom 65.
The wire rope 72 unwound from the 71 is arranged along the boom 65, and further hangs down via a pulley 73 provided at the tip of the boom 65.
The pulley is suspended, and the tip of the wire rope 72 passing through the pulley of the hook 74 is connected to the tip of the boom 65.

In this crane device 44, boom expansion / contraction operation by the internal hydraulic cylinder of the boom 65, hydraulic cylinder
When performing boom hoisting operation with 67, swivel operation with slewing bearing 62 and hydraulic motor 66, and wire hoisting and lowering operation with winch 71, hydraulic power pipe (not shown) from power unit 13 of undercarriage 11 is used. The hydraulic energy transmitted via (including) is direction-controlled and flow-rate-controlled by an operation valve (not shown) which is switched by the operation lever 75 mounted on the column 61, and each operation is performed.

Next, the operation of the carrier of the illustrated embodiment will be described with reference to FIGS. 3 and 4.

In the lower traveling structure 11, when the hydraulic energy transmitted from the power unit 13 is transmitted to the traveling hydraulic motor 15, the driving force that is decelerated by the speed reducer (not shown) directly connected to the hydraulic motor 15 and the sprocket is increased. Acting on 16,
The rotational force of the sprocket 16 is transmitted to the crawler belt 18, and the carrier travels.

When the hydraulic motor 28 is actuated by the hydraulic energy from the power unit 13, the swivel device 22 rotates the pinion 29 by the speed reducer 27 directly connected to the hydraulic motor 28, and the swivel bearing meshes with the pinion 29 by its internal teeth. The inner ring 26 of 23 rotates, and this inner ring
The lower frame 41 of the upper revolving superstructure 12 mounted integrally with the 26 rotates.

Further, in the lifting device 43, when the hydraulic energy from the power device 13 is transmitted to the cylinder head side of the hydraulic cylinder 58 and the hydraulic cylinder 58 is extended, the pushing power of the hydraulic cylinder 58 is passed through the pin 59. Acting on the link mechanism 51, and the link mechanism 51 extends upward.

When the upper frame 42 reaches the required height, the operating lever 75 of the operating valve is returned to the neutral position and the supply of hydraulic energy is stopped, so that the upper frame 42 stops rising. When lowering the upper frame 42,
The reverse operation is performed.

As shown in FIG. 4, the crane device 44
In the following manner, the boom 65 is swung, extended and retracted, raised and lowered, and the winch 71 is used to wind and lower the hook.
When performing each of these operations, the hydraulic energy of the power unit 13 is transmitted to each hydraulic actuator by operating the operating lever 75.

That is, the boom turning operation is performed by the hydraulic motor.
When the hydraulic energy is transmitted to 66, the power reduced in the required rotational speed by a speed reducer (not shown) directly connected to the hydraulic motor 66 and the power output increased is transmitted to the swivel bearing 62,
The pedestal 63 of the crane device 44 directly connected to the slewing bearing 62 is rotated.

In order to raise the boom 65 upward with the crane device 44 and adjust it to the required height and posture, when hydraulic energy is transmitted to the head side of the hydraulic cylinder 67, the hydraulic cylinder 67 extends and When the boom 65 rotatably connected to the tip of the rod by a pin (not shown) rises upward and stops the supply of hydraulic energy, the boom 65 is held in an optimum posture.

Further, when adjusting the position of the tip end hook 74 of the boom 65 to a position away from the machine body, hydraulic energy is transmitted to a hydraulic cylinder (not shown) in the boom body having a telescopic structure to extend the boom 65. This allows the hook 74 at the tip of the boom 65 to be adjusted to a predetermined position.

When the boom 65 is tilted downward, or when the boom 65 is contracted, the hydraulic cylinder 67 or the hydraulic cylinder inside the boom can be operated in the opposite manner.

Further, when loading a load on the upper revolving structure 12 with the hook 74, when hydraulic energy is transmitted to the winch 71, the winch 71 starts winding the wire rope 72, and the hook 74 moves upward, Loading is carried out in combination with the swing operation of the boom 65, the undulating operation and the telescopic operation. Upper revolving structure
In the case of unloading cargo from 12, it can be carried out in the reverse order of this operation.

As described above, when the hydraulic energy transmitted from the power unit 13 is transmitted to the hydraulic cylinder 58 of the lifting device 43 between the lower traveling structure 11 and the upper revolving structure 12, this hydraulic cylinder
58 expands and contracts, the link mechanism 51 connected to the hydraulic cylinder 58 expands and contracts in the vertical direction, and the upper frame 42 of the upper swing body 12 connected to the upper part of the link mechanism 51 moves up or down.

By the above operation, the bed surface level of the upper swing body 12 becomes the same level as the height of the other vehicle or the work place at the time of loading, unloading, or loading / unloading.
It is possible to easily transfer loads, and when this transport vehicle is used as a work carriage, delicate positioning of loads can be performed by raising and lowering the upper frame 42.

Power unit 13 equipped on the undercarriage 11
The hydraulic energy generated in
The boom 65 is transmitted by transmitting the hydraulic fluid to the hydraulic motor 66 of the crane device 44 on the upper swing body 12 through a rotary joint that is a rotary fluid coupling mounted between the upper and lower traveling bodies 11.
Is rotated 360 ° on the upper swing body 12 and by transmitting hydraulic energy to a hydraulic cylinder 67 attached to the multi-stage boom 65 or a hydraulic cylinder (not shown) mounted in the boom 65, 65 undulates or expands and contracts, and further transmits hydraulic energy to the hydraulic motor of the winch 71, so that the hook 74 is hoisted or unwound.

By rotating, extending and retracting the boom 65, the load can be freely moved three-dimensionally in the horizontal and vertical directions, and the degree of freedom and working range of the crane device 44 can be increased. As a result, it is possible to carry out operations such as loading and unloading on the upper swing body 12 with the single transport vehicle.

[0048]

According to the invention described in claim 1, since the upper revolving structure is composed of a double structure frame and the lifting device is mounted between the upper frame and the lower frame, the upper frame is the main carrier. At the time of transshipment of a load with another vehicle or equipment, the load platform surface can be moved up and down according to the other party, so that the transshipment of the load can be easily performed. Also, when used as a work trolley, the height of the upper revolving structure can be adjusted freely even when performing work in a place with a low ceiling where there is a limit in height and only a transport vehicle can enter. In addition, it is possible to easily perform the alignment on the upper revolving structure without requiring auxiliary work such as human power and a jack, and improve work efficiency.

According to the second aspect of the present invention, since the carrier according to the present invention has the crane device mounted on the upper swing body for loading a load, a machine for loading and unloading a crane vehicle or a forklift. Is not necessary, and these operations can be easily performed.

According to the third aspect of the invention, since the boom is mounted on the upper swing body so that the boom can swing, extend and retract, and can move up and down, the degree of freedom in the loading / unloading posture is large. Work performance such as loading can be improved.

[Brief description of drawings]

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

FIG. 2 is a plan view of the same carrier.

FIG. 3 is a front view showing an operating state of the lifting device of the same carrier.

FIG. 4 is a front view showing an operating state of the crane device of the same carrier.

FIG. 5 is a partially cutaway front view showing a conventional carrier.

FIG. 6 is an explanatory diagram showing an example of work on a conventional transport vehicle.

[Explanation of symbols]

 11 Undercarriage 12 Upper revolving structure 13 Power unit 22 Revolving device 41 Lower frame 42 Upper frame 43 Lifting device 44 Crane device 45 Mounting surface 65 Boom

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takaharu Ose 7-14-1, Wadamiyadori, Hyogo-ku, Hyogo-Ken Nishiryo Engineering Co., Ltd. (72) Inventor Masanori Hayashi 13 Niijima, Harima-cho, Kako-gun Hyogo Company Futagawa Kogyo Seisakusho

Claims (3)

[Claims] 1. A transport vehicle in which an upper swing body is provided to a lower traveling body equipped with a power unit through a swing device, and an upper side surface of the upper swing body serves as a loading surface for a load to be transported. The upper revolving structure is provided with a lower frame provided on the revolving device, an upper frame that can be moved up and down with respect to the lower frame, and a lifting device that drives the upper frame to move up and down with respect to the lower frame. Carrier. 2. The transport vehicle according to claim 1, wherein a crane device is mounted on the upper swing body. 3. The carrier according to claim 2, wherein the crane device has a boom mounted on an upper swing body so as to be swingable, extendable and retractable.