JPH08239046A - Carriage - Google Patents

Abstract

PURPOSE: To provide a conveyance carriage which can convey an object to be conveyed exactly to a desired position. CONSTITUTION: A lifting device 14 is mounted onto a movable vehicle body 12, on which a movable frame 30 is supported. On the movable frame 30, a load carrying platform 18 is supported through a slide device 16, and the load carrying platform 18 is slid in the horizontal direction by the slide device 16. For conveying an object to be conveyed, the object to be conveyed is loaded on the load carrying platform 18 and is conveyed to a desired conveyance position and under the position by the vehicle body 12, and the height of the load carrying platform 18 is adjusted by a lifting device 14 to adjust the height of the object to be conveyed. The load carrying platform 18 is slid in the horizontal direction by the slide device 16 to adjust the position in the horizontal direction of the object to be conveyed. It is thus possible to convey the object to be conveyed to a desired position promptly and exactly with it placed on the load carrying platform 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage, and more particularly to a carriage for accurately carrying and positioning a heavy load to an arbitrary space position.

[0002]

2. Description of the Related Art Heretofore, this type of carriage has been provided with a lift mechanism for lifting a loading platform on which a load is placed. Then, using this carrier, for example, in order to carry out the pipe construction for connecting and laying a plurality of pipes in the air, when transporting the pipes to the space position where the pipes are to be carried, the carrier truck with the pipes mounted on the loading platform is used. After traveling and transporting to just under the space position, the pipe was lifted up to a space position of a predetermined height by a lift mechanism.

[0003]

However, in the case of the conventional carrier truck, although it is possible to transport the pipes to the approximate space position where the pipes are installed, the pipes are positioned at the accurate space position for connecting the pipes. There is a drawback that you cannot do it. For this reason, once the pipes have been transported to the approximate space position where the pipes are to be installed, an operator carrying the pipes on the cargo bed in advance and connecting the pipes to each other can shift the placement position of the pipes placed on the cargo bed to make accurate The pipe was positioned at a different space position. This positioning work is very troublesome and the work efficiency is low, and particularly when the transported object is a heavy object, accurate positioning by human power of the operator was extremely difficult.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a carrier truck capable of accurately carrying and positioning a transported object at a desired space position.

[0005]

In order to achieve the above object, the present invention provides a vehicle main body and a vehicle main body, and the vehicle main body is provided on the vehicle main body.
A loading platform on which a load is placed, an elevating mechanism for moving the loading platform up and down with respect to the vehicle body, and a sliding mechanism for horizontally sliding the loading platform with respect to the vehicle body,
It is characterized by consisting of.

[0006]

According to the present invention, when a transported object is conveyed to a desired spatial position and accurately positioned, the transported object is first placed on the loading platform and the vehicle body is run to move the transported object to the spatial position. Transport it just below. Next, the lifting mechanism adjusts the height direction of the loading platform to transport the transported object to the height of the space position. Next, the slide mechanism slides the loading platform in the horizontal direction to adjust the position of the transported object in the horizontal direction. Accordingly, the transported object can be accurately and quickly transported and positioned at a desired space position while being placed on the platform.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a carrier truck according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a perspective view of a first embodiment of a carrier vehicle according to the present invention, and FIG. 2 shows a side view of the carrier vehicle 10. Also,
FIG. 3 shows a front view of the carriage 10, and FIG. 4 shows a plan view of the carriage 10.

As shown in FIGS. 1 to 4, a carriage 10 is provided.
Is mainly composed of a vehicle body 12, a lifting mechanism 14, a horizontal slide mechanism 16, a luggage carrier 18, and a control unit 19. The vehicle body 12 has wheels 22, 2 at four lower corners of a base plate 20 formed in a substantially rectangular shape.
2, ... Are arranged and formed, and the wheels 22, 22 ,.
By driving a drive motor (not shown) connected to, the vehicle can travel by itself. Also, the wheels 22, 2
2, ... Are rotatably supported with respect to the base plate 20, and the vehicle body 12 can change the traveling direction by changing the direction of the wheels. Also,
The rig jacks 24, 24, ... Are arranged near the wheels 22, 22, .. Thus, when changing the direction of the wheels 22, 22, ...
Wheels 22, 22, ...
Since the direction of the carriage can be changed, the carriage 10 can easily travel in any travel direction. Further, the wheels 22 can be fixed in the traveling direction by a locking means (not shown), which allows the vehicle main body 12 to travel stably in the traveling direction. In addition, the vehicle main body 12 is connected to another drive vehicle (not shown) without using a drive motor for self-driving so that the vehicle body 12 can be towed. 25 ...
Are provided at both ends of the base plate 20.

The elevating mechanism 14 is provided on the base plate 20 of the vehicle main body 12, and pantograph type link mechanisms 26, 26 respectively installed at both ends of the base plate 20 are driven by hydraulic cylinders 28, 28. As a result, the elevating frame 30 having a rectangular cross section or a frame shape fixed to the upper ends of the link mechanisms 26, 26 is vertically moved in the Z (+)-Z (-) direction in the figure. . At this time, the link mechanisms 26, 26
Changes the driving amount of each of the hydraulic cylinders 28, 28 individually, so that the link mechanism 26, 26 installed on one side and the other side of the base plate 20 changes the lifting amount, and the tilting of the lifting frame 30. The amount can be adjusted.

The structure of the slide mechanism 16 is shown in FIG.
6 and the plan view of FIG. 6, the loading platform 18 formed in a substantially rectangular shape is slidably supported on the elevating frame 30 via a slide plate 34, for example, a Teflon (trade name) plate. To be done. In addition, the lifting frame 30
In the space formed by the cargo bed 18, the cylinder main body 32A is supported by the cargo bed 18, and when the cylinder rod 32B extends in the X (+) direction in the drawing, the side wall inner peripheral surface 30A of the elevating frame 30 is removed. The pair of first hydraulic cylinders 32, 32 to be pressed and the cylinder main body 33A are
The cylinder rod 33B is supported by
A pair of second hydraulic cylinders 33, 33 that press the sidewall inner peripheral surface 30A of the elevating frame 30 when extended in the (-) direction.
When the cylinder body 34A is supported by the cargo bed 18, and the cylinder rod 34B extends in the Y (+) direction in the drawing, a pair of third hydraulic cylinders 34 that press the sidewall inner peripheral surface 30A of the elevating frame 30. 34 and the cylinder body 35A are supported by the carrier 18, and when the cylinder rod 35B extends in the Y (-) direction in the drawing, the lifting frame 3
A pair of fourth hydraulic cylinders 35, 35 for pressing the inner peripheral surface 30A of the side wall of 0 are provided.

The loading platform 18 is formed in a substantially rectangular shape as described above, and is slidably supported on the elevating frame 30. In addition, at both ends of the loading platform 18, the loading platform 1
The U-shaped fasteners 36, 3 for engaging the platform 18 with the lifting frame 30 so that the 8 does not come off the lifting frame 30.
6 is provided. In addition, detachable handrails 38, 38 are provided at both opposite edges of the luggage carrier 18. By providing the handrails 38, 38, the carrier truck of the present invention can also be used as a mobile scaffold for aerial work.

The control unit 19 includes the vehicle body 1
, And the rig jacks 24, 24, ... of the vehicle body 12, the drive control of the hydraulic cylinders 28, 28 of the lifting device 14, and the hydraulic cylinder 32 of the slide mechanism 16. , 33, 34, 35
Is performed. Next, the operation of the first embodiment of the carriage according to the present invention configured as described above will be described by using as an example a pipe construction in which a plurality of pipes are connected and installed at a predetermined space position.

As shown in FIG. 7, when the pipe 42 is connected to the existing pipe 40, the pipe 42 is first connected to the carriage 10.
Placed on the loading platform 18 of the vehicle, and attached to the pipes 42 with the wheel stoppers 44, 44, ...
Is fixed. Next, the vehicle body 12 is made to travel, and the piping 4
Transport 2 to a position that is considered to be approximately directly below the space where piping is installed. Here, when the movement distance to a position just below the space position is long, the vehicle body 12 is connected to a drive vehicle (not shown) for exclusive use of towing, and the drive vehicle pulls the vehicle body 12 to directly below the space position. It can also be transported to the vicinity. When it is necessary to change the traveling direction of the vehicle body 12, as described above, the vehicle body 12 is temporarily stopped, and the wheels 22, 22, ... Are changed with the vehicle body 12 being lifted by the rigger jack 24. . Next, piping 4
When the vehicle body 12 is transported to a position that is considered to be substantially below the space position where piping is installed, the vehicle body 12 is stopped at that location, and the vehicle body 12 is floated by the rigger jacks 24 ,. Fixed to.

When the carriage 10 is fixed, the lifting mechanism 1
The hydraulic cylinders 28, 28 of No. 4 are driven to raise the platform 18 to adjust the height of the pipe 42. As a result, the pipe 42 is roughly positioned at the space position where the pipe is installed. In this positioning, when the existing pipe 40 is inclined obliquely upward or obliquely downward, the hydraulic cylinders 28, 28 are individually driven, and the link mechanisms installed on one side and the other side of the base plate 20, respectively. 26,
By changing the lifting amount of 26 individually,
Adjust the tilt amount of. Thereby, the pipe 42 can be easily adjusted to the inclination of the existing pipe 40.

However, the pipe 42 is simply moved by the vehicle body 12 and transported by the elevating mechanism 14, and the pipe 42 is connected to the existing pipe 4.
It is extremely difficult to accurately perform fine adjustment in the horizontal direction with respect to the joining position of 0. Therefore, the pipe 42 is connected to the existing pipe 4
It is necessary to accurately position and correct the horizontal direction with respect to 0. This positioning correction is performed by the slide mechanism 16. For example, when the loading platform 18 is slid in the X (+) direction in the figure by a predetermined distance, the hydraulic cylinder 32 is driven to move the inner wall surface 30A of the side wall of the lift frame 30. The cylinder rod 32B in the abutting state is contracted by a predetermined distance, and the hydraulic cylinder 33 is driven to extend the cylinder rod 33B in the abutting state on the inner peripheral surface of the side wall of the elevating frame 30 by a predetermined distance so that the elevating device 30 moves. The side wall inner peripheral surface 30A is pressed. Due to the repulsive force due to this pressing, the cylinder body 32
The carrier 18 supported by A, 33A, 34A, and 35A,
It slides on the slide plate 34 with respect to the elevating frame 30, that is, the vehicle body 12, and relatively slides toward the X (+) side by a predetermined distance. At this time, in the hydraulic cylinders 34 and 35 arranged in the Y (+) and Y (-) directions in the figure, the tip end portions of the respective cylinder rods 34B and 35B are about a single sheet of paper from the inner peripheral surface of the side wall of the elevating frame 30. Be evacuated. As a result, the hydraulic cylinders 34, 35 serve as guides for preventing blurring when the platform 18 slides in the X direction, so that the sliding operation can be stabilized.
Also, when the loading platform 18 is slid in the X (-) direction in the drawing, the Y (+) direction in the drawing, or the Y (-) direction in the drawing,
Similarly to the case where the platform 18 is slid in the X (+) direction in the figure, each hydraulic cylinder 32, 33, 34, 3
5 is driven so as to match the sliding direction. In this way, the loading platform 18 is moved in each direction X (+), X (-), Y
Slide it in the required direction (+), Y (-),
By adjusting the position of the pipe 42 in the horizontal direction, the pipe 42 can be accurately positioned with respect to the existing pipe 40.

Next, an operator who is already riding on the platform 18 together with the pipe 42 fastens the flanges of the pipe 42 and the existing pipe 40 together with bolts. As described above, according to the carrier truck 10 of the first embodiment, the lifting mechanism 14 and the slide mechanism 1 are provided.
By using 6, it is possible to quickly and accurately transport and position the transported object to a desired spatial position. Also,
Since the vehicle body 12 can be lifted by the rigger jack 24 to change the direction of the wheels 22, 22, ..., It is possible to travel in an arbitrary direction even in a narrow space and carry a transported object. In addition, a removable handrail 3 is attached to the loading platform 18.
By providing 8, it can be used as a mobile scaffold.

Next, a second embodiment of the carriage according to the present invention will be described with reference to FIGS. 8 and 9. FIG. 8 is a side view showing a partial configuration diagram of the second embodiment, and FIG. 9 is a front view thereof. The same members and the same devices as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIGS. 8 and 9, the carriage 10 of the second embodiment is
Only the carriage 10 of the first embodiment differs from the slide mechanism 46. That is, the link mechanisms 26, 26 of the lifting mechanism 14
An elevating table 48 formed in a rectangular shape is fixed to the upper end of the. On the lifting table 48, the lower surface 4
A movable table 52 having wheels 50, 50, ...
Is mounted, and the movable table 52 is the lifting table 4
It is possible to move above 8. However, the wheels 50,
Since the directions of 50, ... Are fixed in the longitudinal direction of the movable table 52, that is, in the X (+)-X (-) direction in the figure, the traveling direction is only the X (+)-X (-) direction. Move back and forth. Further, an X-axis hydraulic cylinder 54 that operates in the same direction as the direction of the wheels 50, 50, ... Is installed at a substantially central portion of the lifting table 48.
The tip end portion of the cylinder rod 54A is supported by a bracket 56 provided on the lower surface of the movable table 52.
The bracket 56 slides on a slide plate 53 provided on the upper surface of the lifting table 48, for example, a Teflon (trade name) plate. As a result, when the X-axis hydraulic cylinder 54 is driven to expand / contract the cylinder rod 54A, the movable table 52 slides in the X (+)-X (-) direction in the figure by an amount corresponding to the expansion / contraction amount. .

Further, on the movable table 52, there is placed a cargo bed 18 having wheels 58, 58, ... Arranged on the four corners of the lower surface, and the cargo bed 18 can be moved on the movable table 52. ing. However, the directions of the wheels 58, 58, ... Are the moving directions of the movable table 52 X in the drawing.
Since it is fixed in the direction orthogonal to the (+)-X (-) direction, that is, in the Y (+)-Y (-) direction in the figure, the traveling direction is Y (+)-Y (-). Only make a round trip. Further, a Y-axis hydraulic cylinder 60 that operates in the same direction as the direction of the wheels 58, 58, ... Is installed at a substantially central portion of the movable table 52.
The front end of the 0 cylinder rod 60A is supported by a bracket 62 provided on the lower surface of the luggage carrier 18. Also,
The bracket 62 slides on a slide plate 61 provided on the upper surface of the movable table 52, for example, a Teflon (trade name) plate. As a result, when the Y-axis hydraulic cylinder 60 is driven to expand and contract the cylinder rod 60A, the platform 18
Slide in the Y (+)-Y (-) direction by an amount corresponding to the amount of expansion and contraction.

As a result, the second aspect of the carrier truck according to the present invention
Also in the case of the embodiment, it is possible to obtain the same operational effect as the slide mechanism of the carrier truck of the first embodiment. Next, a third embodiment of the carrier truck according to the present invention will be described with reference to FIG. FIG. 10 is a side view showing a partial configuration diagram of the third embodiment. The same members and devices as those in the second embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 10, the carrier truck 10 of the third embodiment is provided with a turning device 64 for turning the load carrier 18 in the carrier truck 10 of the second embodiment. That is, the movable table 52 is placed on the movable table 52 in the same manner as the loading platform 18 of the second embodiment, Y (+)-Y in the figure.
A second movable table 66 that moves in the (-) direction is provided,
The loading platform 18 is provided on the second movable table 66 via a large-sized turning bearing 68. The luggage carrier 18 is swung by being driven by a drive motor (not shown) on the large swing bearing 68.

As a result, the carriage 10 of the third embodiment is shown.
In addition to the elevating function and the horizontal fine adjustment function of the carrier 10 of the second embodiment, the horizontal direction changing function is provided, so that the positioning is further facilitated. In the swivel device 68, the loading platform 18 described in the first embodiment is used as the second movable table 66, and the loading platform 18 is installed on the second movable table 66 via the large swing bearing 68.

The lifting mechanism 14 of the first to third embodiments is a pantograph type link mechanism 26, 2.
6 is used to raise and lower the platform 18, but the present invention is not limited to this, and may be, for example, a cylinder arranged perpendicularly to the four corners of the base plate 20. Further, the link mechanisms 26, 26 may be configured to be detachable so that the link mechanisms 26, 26 of different sizes can be exchanged so that the amount of elevation can be changed. At this time, instead of the link mechanisms 26, 26 having different sizes, a multi-stage link mechanism may be used.

Further, the slide mechanism of the first embodiment does not require the movable table 52 unlike the slide mechanism of the second embodiment, and the hydraulic cylinder has the loading platform 18 and the lifting frame 30.
The slide mechanism itself can be made compact because it is housed in the space formed by 1.
There is an effect that 0 can be made compact. Also,
In the present embodiment, the vehicle body 12 is set to freely travel by steering the wheels 22, 22, ..., However, when it is used for a certain work process such as in a factory, the traveling route by a rail track or magnetic guidance is fixed. You can also Further, in the second embodiment, the wheels 50, 50, ... Are used to support the movable table 52 that moves on the elevating table 48, but the supporting method is not limited to this, and for example, on the elevating table 48. A slide plate such as Teflon (trade name) may be provided, and the movable table 48 may be supported on the slide plate via a sliding member or the like. Further, the loading platform 18 moving on the movable table 52 can be similarly supported. Further, in the second embodiment, the cylinder rod 54A of the X-axis hydraulic cylinder 54 is used.
Although the bracket 56 to which is connected is slid on the slide plate 53 provided on the elevating table 48, for example, a wheel is provided on the bracket 56 and the wheel is moved on the elevating table 48. Good. Also,
The bracket 62 to which the cylinder rod 60A of the Y-axis hydraulic cylinder 60 is connected can be similarly supported.

[0024]

As described above, according to the present invention,
By providing the vehicle body with the elevating means and the sliding means, the height and horizontal directions of the transportation position can be adjusted. Accordingly, when the transported object is transported to the desired space position and positioned, the transported object can be accurately transported to the desired space position and accurately and quickly positioned while the transported object is placed on the loading platform. it can.

Therefore, unlike the prior art, the manual adjustment of the horizontal position is not required, so that the work can be performed easily and the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a first embodiment of a carrier truck according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of FIG.

FIG. 4 is a plan view of FIG.

FIG. 5 is a perspective view illustrating a slide mechanism of the carrier truck according to the first embodiment.

FIG. 6 is a plan view illustrating a slide mechanism of the carrier truck according to the first embodiment.

FIG. 7 is an explanatory view of the operation of the first and second embodiments of the carrier truck according to the present invention.

FIG. 8 is a side view illustrating a slide mechanism of the carrier truck according to the second embodiment.

FIG. 9 is a front view illustrating a slide mechanism of a carrier truck according to a second embodiment.

FIG. 10 is a side view illustrating a slide mechanism of a carrier truck according to a third embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Transport vehicle 12 ... Vehicle main body 14 ... Elevating mechanism 16, 46 ... Sliding mechanism 18 ... Luggage platform 19 ... Control unit 22 ... Wheels 28, 32, 33, 34, 35, 54, 60 ... Hydraulic cylinders 34, 53, 61 ... Slide plate 52 ... Movable table 68 ... Large bearing for turning

Front page continuation (72) Inventor Shin Sagawa, 1-1-14 Kanda, Uchikanda, Chiyoda-ku, Tokyo Inside Hirit Plant Construction Co., Ltd. (72) Inventor, Hiroki Nakajima 1-1-14, Uchikanda, Chiyoda-ku, Tokyo (72) Inventor Hiroshi Tezuka 3-1-1 Saiwaicho, Hitachi City, Ibaraki Prefecture Hitachi Factory, Hitachi Plant

Claims (5)

[Claims] 1. A vehicle main body, a loading platform provided on the vehicle main body for placing a load, an elevating mechanism for raising and lowering the loading platform with respect to the vehicle main body, and the loading platform with respect to the vehicle main body. A carrier truck comprising a slide mechanism for slidingly moving in a horizontal direction. 2. The slide mechanism comprises a movable table slidably supported on a lifting table of the lifting means, and a sliding table for sliding the movable table in either a horizontal X direction or a horizontal Y direction. 7. A driving means for driving the movable table, and a second driving means for sliding the loading platform slidably supported on the movable table in a direction orthogonal to a sliding direction of the movable table. The carrier truck described in 1. 3. The elevating frame of the elevating means, which is formed in a rectangular shape and has a side wall around the elevating frame, the elevating frame and the loading platform slidably supported on the elevating frame. Is provided in the space formed by
The main body part is supported by the cargo bed, and the expandable part expands and contracts in the horizontal X direction to press the inner peripheral surface of the side wall of the elevating frame, and the main part is provided in the space. Is supported by the cargo bed, and its expandable part expands and contracts in the horizontal Y direction to press the inner peripheral surface of the side wall of the elevating frame.
The trolley according to claim 1, wherein the trolley comprises: 4. The elevating means comprises first elevating means for elevating and lowering one end side of the cargo bed and second elevating and lowering means for elevating and lowering the other end side of the cargo bed, and the first elevating and lowering means. 2. The carrier truck according to claim 1, wherein the loading platform can be tilted with respect to the vehicle body by changing the vertical movement amount of each of the means and the second vertical movement unit. 5. The carriage according to claim 1, further comprising a rotating mechanism for rotating the loading platform in a horizontal direction with respect to the vehicle body.