JPH09323891A - Long material carrying truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry a long material efficiently without needing another machine such as a crane or the like by installing a loading space for placing a long material through a swivel device on a lower traveling unit, and fitting a crane for loading and unloading the loading space with a long material through a swivel. SOLUTION: Cylindrically formed underframes 37 are fixed at a space in the longitudinal direction on a vertical underframe 30 in such a manner as to project over the upper surface. In each underframe 37, two sliding frames are accommodated and claw-like grippers 41, 42 are fixed to each opposite one end of the respective sliding frames. A crane 61 is fitted to a loading space 8 in such a manner that a mounting table 62 is fixed to the lower side of a fitting frame 63 provided downward from the load space 8 to position the mounting table 62 for the crane 61 below the load space 8, a swivel 60 with a swivel hydraulic motor is removably installed on the mounting table 62, and the crane 61 having an expansible boom 67 and a hydraulic cylinder for derricking motion is installed on the swivel 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long object transporting truck mainly used for carrying long objects such as shape steel in underground construction.

[0002]

2. Description of the Related Art In the case of constructing a basement floor of a building, as shown in FIG. 9, pillar steel 56 is buried so that the distance W is about 4 to 5 m, and then an excavator 57 is used to connect the pillars 56. After excavating and excavating to the ground with a clam shell, etc., the pillar 5
A space H1 between the upper and lower beams 40 is installed between the exposed portions of 6 at a distance of at least 2.5 m or more. This erection work is performed by gripping the beam 40 by the chuck device 50 of the installation machine 49 on the bottom surface 58, installing the beam 40 at the mounting location, and fixing it with bolts and nuts. When this kind of work is completed for a given floor, the depth H2
By excavating only and erection the beam below,
Build a skeleton.

When such an underground construction is carried out, if the area of the building to be constructed is large, a beam is assembled at the place where the steel mold 40 is suspended by a crane (not shown) on the ground and the dug underground surface. Since the distance from the installation machine 49 becomes long, a carriage for transporting the steel mold from the place where the steel mold is suspended to the place where the beam is to be constructed is required.

Conventionally, as such a long object carrier, a flat plate-like carrier is installed on a crawler-type undercarriage via a turning device, and a shape steel or the like is mounted on the carrier. There is.

Further, instead of constructing the carriage as a dedicated carriage, in order to give the shape steel installation machine 49 a function as a carriage, a carrier for mounting the shape steel is installed on the multi-joint arm and the lower traveling body It has been proposed that a recess is formed between the left and right side frames, and the multi-joint arm is folded and accommodated in the recess when traveling to lower the height of the loading platform to carry the steel mold (Japanese Patent Laid-Open No. 7-71868). -69593).

[0006]

However, in the case where a long object is mounted on a flat plate-shaped carrier, a crane is required to mount the long object on the carrier, and the long object is mounted at the mounting location. A crane is also required when unloading, and it is necessary to have both a trolley and a crane for construction. Also,
As described in the above-mentioned publication, in the case where the height of the bed of the installation machine can be lowered, since the mold steels are transported one by one, the accumulation place of the mold steels and the mounting place of the mold steels are If the distance is long, the efficiency becomes poor.

In view of the above problems, the present invention is to provide a long object transporting truck capable of efficiently carrying a long object without the need for another machine such as a crane.

[0008]

DISCLOSURE OF THE INVENTION The present invention provides a crane for mounting a long object on a lower traveling body via a turning device, and loading and unloading the long object on the carrier. Is attached via a turning device (Claim 1). Further, the crane is detachably attached to the bed (claim 2). Further, a gripping body for gripping a long object by moving the cargo bed from the outside to the inside by a hydraulic cylinder is attached to the cargo bed (claim 3).

Further, the loading platform is composed of a fixed frame and a movable frame which is installed on the left and right sides of the fixed frame so as to be retractable by an actuator, and a gripping body for holding a long object is provided on the movable frame. (Claim 4). Further, a stopper for sandwiching a long object with the gripping body is provided on the center side of the loading platform (claim 5). Further, a crane mounting base is attached to the end of the loading platform so as to be below the loading platform, and the mounting platform is mounted away from the lower traveling structure so that the mounting platform does not collide with the lower traveling structure when the loading platform turns. A power unit, a tank, and a control unit are mounted on the track frame of the lower traveling unit so as not to project from the end of the lower traveling unit (claim 6). Furthermore, the crane has a telescopic boom, and the total height in a state where the boom is placed on a bed is set to 2.5 m or less (claim 7).

[0010]

According to the first aspect of the present invention, the long object is placed on the loading platform of the carrier by the crane attached to the loading platform at the place where the long objects are accumulated, and the lower traveling body is operated to run the long object. Carry it to the construction site, and unload the long object with a crane on the platform at the construction site, or hold the long object with an installation machine etc. and unload it from the platform.

According to the second aspect of the present invention, since the crane is detachable from the bed, it is possible to select whether to work with the crane attached or without the crane depending on the situation of the site. If it is advantageous to load the cargo onto the platform by using a crane at the site, remove the crane from the platform and use it as a lightweight, compact, and easy-to-use transport-only machine. On the other hand, when there is no crane for loading, the crane is attached to the platform before use.

According to a third aspect of the present invention, a plurality of long objects are usually placed side by side on the bed of the carrier by a crane or the like at a place where the long objects are collected, and the gripper is moved by an actuator to increase the length on the bed. Tighten and grip the long object, move it by the operation of the undercarriage and carry it to the construction site of the long object, and swivel the loading platform so that the side surface of the long object faces the installation machine at the construction site. Loosen the body and let the installation machine grasp the long object, or lower the long object to the ground with the crane attached to the loading platform.

According to a fourth aspect of the present invention, when the carriage has a narrow passage, the cargo bed travels with a small width, and when the carriage has a wide passage, the cargo bed has a wide width to mount many long objects. It becomes possible to carry it.

According to the fifth aspect of the present invention, the long object is fixed to both sides of the stopper on the center side of the loading platform. At the installation location, turn the cargo bed 180 degrees after turning the cargo bed 180 degrees after the side of the cargo bed faces the installation machine and the long object on one side on the cargo bed is lowered. It is possible to facilitate gripping by a machine and allow it to be gripped.

According to the sixth aspect of the present invention, since the crane mounting base is mounted at a position lower than the load carrier, the crane boom can be placed in a low position. Further, since the power device and the hydraulic device are mounted on the track frame of the lower traveling body so as not to project from the end portion of the lower traveling body, damage due to these collisions is prevented, and the mounting base is also supported by the full swing. Does not collide with the power unit, tank, or control unit.

According to a seventh aspect of the present invention, since the crane has a telescopic boom, a range for loading and unloading long objects is widened, and a total height when the boom is placed on a bed is set to 2.5 m or less. Therefore, the transportation of the beams in the basement construction can be smoothly performed without being disturbed by the existing beams.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view showing an embodiment of a long object carrier truck according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a carrier truck including a vertical section of a turning device of the carrier truck. 4B is a front view of the luggage carrier, and FIG. 4B is an E view of FIG.
-E is an enlarged sectional view.

In FIGS. 1 and 2, reference numeral 1 denotes a lower traveling body, which has side frames 3 on both sides of a center frame 2 and has drive wheels 4 and driven wheels 5 on the side frames 3. A crawler belt 6 is hung on these, and a drive wheel 4 is rotated by a hydraulic motor (not shown) to drive the vehicle body. A loading platform 8 is installed on the center frame 2 via a turning device 7. A crane 61 is attached to the end of the platform 8 via a turning device 60.

Between the left and right side frames 3 and 3, a power unit 9 including a hydraulic pump, a generator and an engine for driving them is installed on the front side of the turning device 7 so as not to project from the front end portion of the crawler belt 6. The power unit 9 is prevented from colliding with the above-mentioned object.

Behind the swivel device 7 between the left and right side frames 3 and 3, tanks 10 composed of a fuel tank and a hydraulic oil tank, a receiver 11 for receiving a wireless operation signal, and a proportional portion from the receiver. A proportional amplifier board 12 for producing a proportional solenoid valve operating current by a solenoid valve operating signal, a proportional solenoid valve 13, a control valve 14 which is switch-controlled by the proportional solenoid valve 13, and the like are mounted. The control valve 14 includes a traveling hydraulic motor (not shown) for the lower traveling body 1, a revolving hydraulic motor 16 for the revolving device 7 (see FIG. 3), and a gripping body 4 described later.
Hydraulic cylinder 4 which is an actuator for opening and closing 1, 42
3, 44 are controlled. As shown in FIGS. 1 and 2, the tanks 10 and the like are also installed at positions that do not project from the rear end of the crawler belt 6.

As shown in FIG. 3, the turning device 7 includes an inner cylinder 19 fixed on the center frame 2, an outer cylinder 21 connected to an upper portion of the inner cylinder 19 via a bearing 20, and a turning hydraulic pressure. It is composed of a motor 16, a pinion 22 rotated by the hydraulic motor 16, and an internal gear 23 of a bearing that meshes with the pinion 22. A center joint 25 is provided for connecting between 1 and the platform 8.

The luggage carrier 8 is fixed to the outer cylinder 21 by two horizontal frames 26 at the front and rear of the central portion and two vertical frames 27 at the left and right of the central portion.
(See FIGS. 3 and 4A and 4B) and these vertical frames 2
A front frame 28 and a rear frame 29 (see FIGS. 1 and 3) welded to the front end and the rear end of 7 and fixed to the outer ends of these frames 28 and 29 and the outer end of the horizontal frame 26. It comprises a vertical frame 30 and stoppers 32 which are fixed to the central vertical frame 27 so as to project upward. As shown in FIG. 4 (A), on the front frame 28, the left and right headlights 33, an engine operating light 34 that lights up during engine startup, and a work light that indicates that the carrier is operable or in an operating state. Three
5 are attached.

As shown in FIG. 1, FIG. 2 and FIG. 4 (B), on the vertical frames 27, 30, an underframe 37 formed in a cylindrical shape so as to project from the upper surfaces thereof is arranged in the front and rear direction. It is fixed at intervals. Two slide frames 38 and 39 are housed in the underframes 37, and one end of each of the slide frames 38 and 39 on the opposite side has a claw-like shape for holding the mold steel 40. The grippers 41, 42 are fixed. 43, 44
Are hydraulic cylinders for respectively sliding and sliding the slide frames 38 and 39 to grip and release the shaped steel 40. The hydraulic cylinders 43 and 44 have one end pinned to the central vertical frame 27 and the other end. Bracket 4 in which is fixed to the sliding frames 38, 39
Pinned to 5, 46.

The crane 61 mounted on the loading platform 8 has a mounting frame 63 provided downward from the loading platform 8 so that the position of the mounting platform 62 of the crane 61 is lower than the loading platform 8 in order to lower the total height of the carriage. A mount 62 is fixed to the lower part, and a swing device 60 with a swing hydraulic motor is detachably installed on the mount 62 with bolts 64 and nuts 65. Mount the crane 61 with the hydraulic cylinder 68.

As shown in FIG. 5, the telescopic boom 67 is attached so as to allow the section steel 40 to be lifted at a position distant from the carrier or to be lifted to a position distant from the carrier. In order to prevent the crane 61 from tipping over, the left and right turning angles θ are limited to 100 degrees or less. Further, the total height H3 (see FIG. 2) of the crane 61 in the state where the telescopic boom 67 is laid down is lower than the distance H1 between the beams 40 or the distance H2 between the bottom surface 58 and the beam 40 (≈H1) shown in FIG. , That is, set to 2.5 m or less.

In the case of carrying the steel mold 40 in this carrier, the carrier is lowered on the bottom surface 58 in FIG. 9 and is remotely controlled by radio as shown by a chain double-dashed line in FIG. 4 (B). The hydraulic cylinders 43 and 44 are contracted to move the grippers 41 and 42 outward, the mold steel 40 is placed on both sides of the stopper 32 on the underframe 37 by the crane 61, and then the hydraulic cylinders 43 and 44 are moved. Is operated to move the gripping bodies 41, 42 in the direction of bringing the gripping bodies 41, 42 close to the stopper 32, thereby gripping the mold steel 40 between the gripping bodies 41, 42 and the stopper 32. In the illustrated example, two shaped steels 40 having different sizes are mounted on the left and right sides of the stopper 32, respectively.

In this way, the mold steel 40 travels while being gripped, but in this case, in order to facilitate passage through the passage, the turning hydraulic motor 16 of the turning device 7 is used if necessary.
Is operated to rotate the loading platform 8 so that the direction of the lower traveling body 1 and the direction of the shape steel 40 are aligned and traveling is performed. During this traveling, since the shape steel 40 is grasped between the grasping bodies 41, 42 and the stopper 32, there is no fear that the long object will fall even when traveling on irregularities or on an inclined surface, and be careful about the fall. In addition, a long object can be efficiently transported without requiring a fixing work with a wire or the like. Then, when the mounting location of the shape steel 40 is reached, as shown in FIG. 6 (A), the side surface of the platform 8 is directed to the installation machine 49, and the hydraulic cylinders 43 and 44 are contracted to move the platform 8.
The gripping body 41 or 42 of the upper shaped steel 40A on one side is released, one of the shaped steel 40A is gripped by the upper and lower claws of the chuck device 50 of the installation machine 49, and the installation work by the installation machine 49 is performed. When gripping by the chuck device 50, the die steel mounting surface of the underframe 37 is located at a position higher than the vertical frames 30 on both sides. Therefore, as shown in FIG.
The lower claw of the chuck device 50 can be easily inserted through the gap indicated by ΔH between and to easily grip.

In this way, the die steel 40A on one side is loaded onto the carrier 8
After unloading, as shown in FIG. 6 (B), the platform 8 is swung by approximately 180 degrees, and the remaining mold steel 40B on the opposite side is moved to the installation machine 49 side, and the mold steel 40B is removed by the chuck device 50 of the installation machine 49. Hold it.

In this way, by mounting the shape steel 40 on both sides of the stopper 32 of the loading platform 8 and turning it so that the chuck device 50 grips it, the reach of the chuck device 50 of the installation machine 49 is limited. Shaped steel 4 without receiving
It is possible to easily hold 0. Stopper 3
By providing 2 in the central portion of the luggage carrier 8, it is possible to mount only one side of the luggage carrier 8, so that even when carrying a small number, the gripping bodies 41 and 42 can be gripped and transported.

Further, in this embodiment, the crane 61
Since it can be attached to and detached from the loading platform 8, when it is advantageous to load the loading platform 8 by a crane (not shown) carried in the bottom surface 58 as an auxiliary machine on site,
The crane 61 is detached from the loading platform 8 and used as a lightweight and compact mobile dedicated machine. On the other hand, in the field where there is no auxiliary crane for loading, the crane 61 is attached to the loading platform 8 for use.

FIGS. 7 (A) and 7 (B) are a plan view and a partial sectional front view showing another embodiment of the carrier according to the present invention with the illustration of the crane omitted. In this embodiment, the loading platform 51
Is composed of a fixed frame 52 and a movable frame 54 that is enlarged and reduced by a hydraulic cylinder 53 to the left and right.
A claw-shaped or plate-shaped grip body 55 extending over the entire length in the front-rear direction as shown in the drawing is provided so that the width of the frame can be enlarged or reduced. With the configuration shown in FIG. 7, it is possible to widen the loading platform 51 when the transporting vehicle passes through a wide passage and reduce the width when the transportation passage is narrow. It is possible to do the work.

FIGS. 8A and 8B are a side view and a plan view showing another example of the mounting structure of the crane according to the present invention. In this embodiment, the left and right sides provided on the rear frame 29 of the luggage carrier 8 are shown. The crane 61 has a structure in which the upper portions of the mounting frames 63 provided on both sides of the mounting base 62 are detachably mounted on the bracket 70 of the mounting bracket 62 by two pins 71.
It is easy to put on and take off.

The carrier truck of the present invention can be applied not only to the transportation of shaped steel but also to the transportation of other long objects such as water pipes. Further, it is possible to change or add hard rubber, wood, or the like to the contact surface of the gripping body with the long object.

[0034]

According to the first aspect of the present invention, since the crane is mounted on the bed which is installed on the lower traveling body so as to be rotatable, the length of the crane to the bed can be increased by itself without the need for another machine such as a crane. It is possible to load long items, which makes it possible to efficiently transport long items.

According to the second aspect, since the crane is detachably attached to the bed, it is possible to select whether to work with or without the crane depending on the situation of the site. And the adaptability of the carrier is improved.

According to the third aspect of the invention, since the gripping body for holding the long object is attached to the loading platform so as to be movable left and right by the actuator, when the long object such as the shape steel is transported at the underground construction site, the unevenness is generated. Efficiently transporting multiple long objects at the same time without fear of dropping long objects when traveling on slopes or on slopes, without paying close attention to the fall, and without the need to fix wires. You can

According to a fourth aspect of the present invention, a loading platform on which a long object is placed is installed on the lower traveling body via a turning device, and the loading platform is fixed to the fixed frame and left and right by an actuator with respect to the fixed frame. Since the movable frame is configured to be movable in and out of the movable frame, and the movable frame is provided with a gripping body for gripping a long object, the same effect as that of claim 1 can be obtained.
The width of the loading platform can be expanded or reduced according to the width of the passage on the site where the transport vehicle passes.

According to the fifth aspect, on the center side of the loading platform,
Since a stopper is provided to receive long objects that move from the outside to the inside of the luggage carrier, even when carrying a small number of long objects, it is possible to carry the long objects while securely gripping them. Further, by swiveling the loading platform by the swivel device, it is possible to position the long object from the loading platform at a position where it is easy to pick up, and it becomes easy to grasp by the installation machine or the like in the field. Also, a small number of long objects can be gripped.

According to the sixth and the seventh aspects, the crane mounting base is mounted at a position lower than the loading platform, away from the swing center of the loading platform so as not to collide with the under-traveling unit in the swinging of the loading platform. Since the power unit, the tank, and the control unit are mounted on the track frame so as not to project from the end of the lower traveling body, damage to these units due to a collision can be prevented, and the carriage can be downsized. In addition, since the total height including the height of the crane can be reduced, it becomes easy to pass through a place with a narrow vertical interval in underground construction.

[Brief description of drawings]

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

FIG. 2 is a side view of the carrier truck according to the present embodiment.

FIG. 3 is a side view of the carrier including a vertical cross section of the turning device of the carrier.

4 (A) is a front view of the luggage carrier, and FIG. 4 (B) is EE of FIG.
It is an expanded sectional view.

FIG. 5 is a plan view for explaining the operation of the crane of this embodiment.

6 (A) and 6 (B) are plan views for explaining the work of loading and unloading the mold steel of this embodiment.

FIG. 7A is a plan view showing another embodiment of the present invention,
(B) is a partially sectional front view thereof.

FIG. 8A is a side view showing another example of the crane mounting structure of the present invention, and FIG. 8B is a plan view thereof.

FIG. 9 is a cross-sectional view illustrating underground construction.

[Explanation of symbols]

1: Undercarriage, 2: Center frame, 3: Side frame, 6: Crawler track, 7: Swing device, 8: Loading device, 9: Power device, 10: Tanks, 11: Receiver, 12: Proportional amplifier board, 13: Proportional solenoid valve, 14: Control valve, 1
5: tank and control device, 16: turning hydraulic motor,
25: Center joint, 32: Stopper, 37: Underframe, 40: Shaped steel, 41, 42: Grasping body, 43, 44: Hydraulic cylinder, 49: Installation machine, 50: Chuck device, 5
1: carrier, 52: fixed frame, 53: hydraulic cylinder, 54:
Movable frame, 55: gripping body, 60: turning device, 61: crane, 62: mounting base, 63: mounting frame, 67: telescopic boom, 68: cylinder, 70: bracket, 71:
pin

Claims (7)

[Claims] 1. A loading platform on which a long object is placed is installed on a lower traveling body via a turning device, and a crane for loading and unloading long objects is mounted on the loading platform via the turning device. A long object carrier that is characterized by that. 2. The long object carrier according to claim 1, wherein the crane is detachably attached to a carrier. 3. The long object carrier according to claim 1 or 2, wherein a gripping body for gripping a long object by moving the cargo bed from the outside to the inside by an actuator is attached to the cargo bed. 4. The cargo bed according to any one of claims 1 to 3, wherein the loading platform is composed of a fixed frame and a movable frame which is installed on the left and right sides of the fixed frame so as to be retractable by an actuator. A long object transporting truck, wherein a frame is provided with a gripping body for gripping a long object. 5. The long object carrier according to any one of claims 1 to 4, characterized in that a stopper for sandwiching a long object with a gripping body is provided on the center side of the loading platform. 6. The crane mount according to any one of claims 1 to 5, wherein a mount for a crane is attached to an end portion of the platform so as to be below the platform, and the platform is mounted on a lower traveling body when the platform is rotated. It is characterized in that the mounting base is mounted away from the undercarriage so as not to collide, and a power unit, a tank and a control device are mounted on the truck frame of the undercarriage so as not to project from the end of the undercarriage. Long object carrier. 7. The long object carrier according to claim 6, wherein the crane has a telescopic boom, and the total height when the boom is placed on a cargo bed is set to 2.5 m or less.