JP2002274250A - Heavy cargo transporting dolly and transporting device equipped with it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heavy cargo transporting dolly excellent in the reducibility using a small number of components, unlikely to deflect, excellent in the durability, low in the center of gravity owing to a small overall height, and excellent in the safety. SOLUTION: The heavy cargo transporting dolly is equipped with a body, a single acting cylinder installed on the body with its piston part facing down, a pressure transmitting pipe with its one end connected to a port of the single acting cylinder, and a moving means installed in the lower part of the body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a container, a freight car,
The present invention relates to a heavy object transporting trolley, which is an auxiliary device for organizing and carrying heavy objects into a cargo ship or the like, and a heavy object transporting device provided with the same.

[0002]

2. Description of the Related Art Conventionally, when a heavy object of 500 kg to more than ten tons is loaded into a cargo storage portion of a container, a freight car, a cargo ship, etc., the heavy object is placed near a transport opening such as an opening of the container. A timber having a length of about 3 m was fixed to a fork of a large forklift, and the tip of the timber was forcibly pushed halfway while being dragged to the floor surface. In addition, when the container is on a trailer truck and is at a height that cannot be reached by a forklift, the container is carried by a forklift using a platform formed at a height that matches the floor of the container. Recently, an air cart that moves a heavy object by lifting a pedestal by air pressure has been developed. However, since these have various problems such as damage to cargo, various studies have been made to solve these problems. For example: a. Japanese Patent Publication No. 50-34296 discloses that "a carrier on a vehicle frame is inclined while moving backward so that the rear portion is lower than the vehicle frame surface, and then the vehicle frame is supported on front and rear support legs. Moved toward the box, the guide member provided on the carrier while sliding the cargo box on the carrier, interferes with the front support legs, automatically folds the front support legs, and moves the vehicle frame. A method of loading a cargo box in a vehicle, wherein the vehicle is stopped, the loading platform is stored in a horizontal position, and the rear support leg is raised above the ground. " b. Japanese Patent Application Laid-Open No. 4-345543 discloses that "an outrigger and a carrier are provided on a chassis frame, guide rails are laid along the carrier in the front-rear direction, and a main pillar is erected at the front end of the carrier. The distal end of a proximal boom of a telescopic boom device having a proximal boom and a distal boom at the upper end of the main column is pivotally supported, and the distal end of the distal boom is guided by the guide rail.
A loading and unloading vehicle, comprising: a telescopic mast device having a base that is guided forward and backward by a vehicle and an elevating mast, and a load support is attached to the elevating mast. Is disclosed. c. Japanese Unexamined Patent Publication No. 3-109141 discloses that a rear gate rotatable to a horizontal position is provided on guide posts erected on both sides of a rear end of a loading platform so that a heavy object is placed on the rear gate. A heavy-duty truck capable of receiving a movable platform to facilitate loading and unloading. " d. Japanese Patent Application Laid-Open No. 6-247696 discloses a "movable vehicle body, a fingerboard provided on the front side of the vehicle body, a push-pull mechanism attached to the front side of the fingerboard and capable of extending and retracting in a pantograph shape by a plurality of links,
A face plate provided on the front side of the push-pull mechanism,
A grip mechanism provided at the lower part of the face plate to grip the edge of the sheet pallet.The grip mechanism grips the edge of the sheet pallet on which the load is placed, and operates the push-pull mechanism to move the vehicle body in the direction of movement of the face plate. In a forklift truck that moves in the opposite direction to perform cargo handling, the push-pull mechanism is composed of an X-shaped link mechanism whose center is rotatably supported by a shaft. The hydraulic cylinder for expansion and contraction and the hydraulic cylinder for driving are interposed in the link mechanism formed to be similar to the link mechanism of the push-pull mechanism. Cylinders are connected in series, and the expansion and contraction of the hydraulic cylinder for driving is converted by a link mechanism for motion conversion, Tuning mechanism of the push-pull mechanism of the rotational operation of the link mechanism of the forklift vehicle to rotate the wheels journaled on the vehicle body. Is disclosed. Other related prior art is disclosed in Japanese Patent Application Laid-Open No. 54-25012.
In the official gazette, there is a "vehicle carrier device",
Japanese Patent Publication No. 178 discloses a "discharge device for cargo on a lorry", Japanese Patent Publication No. 60-42135 discloses a "container transfer device", and Japanese Patent Publication No. 1-58086 discloses a "container transfer device".
A "loading control device for loading a load on a loading tray onto a truck" is disclosed.

[0003] However, the above-mentioned conventional heavy-load transport carts, heavy-load transport devices, and heavy-load transport methods have the following problems. (1) Each of the above publications has no means for pushing heavy objects into the interior of the container, so the pushing work is the same as before, there is a risk of damage to cargo, and the work takes time, There was a problem of lack of nature. (2) In the method of pushing with a square timber, a heavy load is pushed halfway while dragging a heavy object onto the floor surface of a container or the like, so that a large friction is generated between the container and the heavy object and the floor surface of the container or the like is damaged. However, there is a problem that the durability is impaired. (3) The method of pushing with a square bar has a problem that a heavy object cannot be moved as expected due to deformation of the heavy object and the heavy object cannot be arranged at a predetermined position. (4) Since a large forklift is required to push heavy objects with a square bar, there is a problem that it cannot be carried out in a place where only a small forklift is provided. (5) When loading heavy objects using a crane truck,
An expensive open-top type container is required because the container is loaded from above, so that the cost is high and the baggage cannot be carried out to a place without a crane. (6) An air cart that lifts a pedestal and moves a heavy object by supplying air requires air supply means having a high air pressure to float the air cart, and keeps the air cart at a predetermined height. For this reason, it is necessary to prevent high-pressure air from escaping from the floor surface, and it is necessary to smooth the floor surface, so that it cannot be used in a container. (7) Install a platform at the entrance of the container,
If the forklift goes up to the height of the container with a forklift, the forklift may fall down on the platform, which has a problem that it involves danger. (8) There are many steps of the pushing work, and there is a problem that each work requires manual labor and thus lacks labor saving.

[0004] In order to solve the above-mentioned problems, the inventor of the present invention has conducted intensive research and has disclosed "a. A plate-shaped pedestal, b" disclosed in Japanese Patent No. 3061380 (hereinafter referred to as "A"). A plate-shaped vertical pedestal disposed vertically above the main pedestal, c. A guide pin erected on the lower surface of the vertical pedestal, and a guide pin pierced in the main pedestal. A guide pin insertion hole to be inserted, d. Moving means disposed on the lower surface of the main pedestal, e. One or more single-acting cylinders disposed on the lower surface of the main pedestal, and One or more cylinder holes in which at least a piston of the perforated single-acting cylinder can move up and down, and a high seat fixed to a lower surface of the main base and transmitting pressure to the single-acting cylinder coupled to the single-acting cylinder; A pressure transmission pipe made of a bending strength member. And vertically moving means for vertically moving the vertical movement base, patented in heavy transport vehicle "equipped with.

[0005]

However, the technique disclosed in the above publication has the following problems. (1) Since a heavy object is placed on the plate-like vertical pedestal, there is a problem that when a load of the heavy object is concentrated at one point or the like, it easily bends and lacks durability. (2) If the vertical moving pedestal is formed thick to improve the durability of the vertical moving pedestal, the overall height of the heavy load transporting trolley will be high, so the height of heavy objects that can be placed in a container or the like is limited. In addition, there is a problem that the weight is increased and the workability is lacking. (3) When a plurality of single-acting cylinders are provided, each single-acting cylinder has only one port through which a pressure transmitting medium such as water or oil enters and exits. Therefore, there is a problem that the amount of the pressure transmission pipe and its joint increases, and the space for arranging the pressure transmission pipe is large, so that the size of the heavy goods transport vehicle becomes large. (4) Since the cylinder portion of the single-acting cylinder is only unstablely supported by the pressure transmission pipe, there is a problem that durability is lacking. (5) Since the pressure transmission pipe bends each time the single-acting cylinder expands and contracts, there is a problem that the durability of the pressure transmission pipe is lacking.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and is intended to provide a heavy-duty transport vehicle which is excellent in productivity with a small number of parts, is resistant to bending and is excellent in durability, and has a low center of gravity due to its low center of gravity and is excellent in safety. It is an object of the present invention to provide a heavy object transfer device which is compact, requires no space for storage, can be easily installed, and can transfer a heavy object to a predetermined place with a small number of workers.

[0007]

Means for Solving the Problems In order to solve the above-mentioned problems, a heavy object transporting cart of the present invention and a heavy object transporting device having the same have the following arrangement.

According to a first aspect of the present invention, there is provided a heavy object transporting trolley, wherein a main body, a single-acting cylinder disposed on the main body with a piston portion downward, and one end connected to a port of the single-acting cylinder. It has a configuration including a connected pressure transmission pipe and a moving means provided at a lower portion of the main body.

With this configuration, the following operation can be obtained. (1) The pressure transmitting medium flows into the single-acting cylinder through the pressure transmitting pipe, whereby the piston portion of the single-acting cylinder extends downward, the lower end is grounded, and the main body is supported by the single-acting cylinder. Rise in state. (2) By letting the pressure transmitting medium escape from the single-acting cylinder through the pressure transmitting pipe, the main body descends while contracting the single-acting cylinder by its own weight. (3) Since it has a main body that moves up and down and moving means, a heavy object is placed on the upper surface of the main body, and the heavy object transport cart is moved to a predetermined position inside a container or the like, and the main body is raised. After that, a member for placing a heavy object such as a timber is placed below the heavy object (the height of the upper surface is higher than the upper surface of the main body when raised, and lower than the upper surface of the main body when lowered) Then, the main body is lowered, and thereafter, the operation of pulling back only the heavy object transporting cart is performed. Thus, the heavy object can be reliably placed on the member on which the heavy object such as the square bar at the desired position is placed. (4) When the main body is moved up and down, the lower end surface of the piston portion of the single-acting cylinder comes into contact with the floor surface of a container or the like, and a heavy object is moved up and down based on this floor surface, so that the structure is simplified. The overall height of the heavy goods transport cart can be kept low, and the volume of containers etc. can be used effectively,
Even when a heavy object is placed, the center of gravity is low, so that the safety during the transfer operation can be improved. (5) Compared to a case where a heavy object is placed on a plate-like body or the like, the heavy object is placed on the main body reinforced by the moving means or the single-acting cylinder or the like, so that it is hardly bent and has excellent durability. (6) Since a heavy object is placed on the upper surface of the main body, there is no need to separately provide a plate-like body or the like for placing a heavy object, and the height of the entire apparatus can be kept low, and the volume of the container and the like can be reduced. In addition to being able to be used effectively, even when a heavy object is placed, the center of gravity is low, so that the safety at the time of carrying work can be enhanced. Here, as the main body, a top plate, a reinforcing portion projecting from the lower surface of the top plate and having a lower end positioned above the lower end of the moving means,
Are used. If you have a reinforcement,
The top plate does not bend due to the weight of the heavy object, and is excellent in durability. Further, it may be formed by only two side walls fixed by sandwiching a single-acting cylinder. Thereby, it is possible to prevent the main body from bending and to reduce the weight. As the moving unit, a unit having a shaft fixed to the main body and a moving roller supported by the shaft, a crawler, a unit using a linear motor as a driving source, and the like are used.
As the pressure transmission pipe, a metal pipe such as a stainless steel pipe or a copper pipe, a composite pipe of a metal material and a rubber material, a hard rubber pipe, an FRTP pipe, or the like is used. As the single-acting cylinder, a cylinder whose wall thickness is formed in accordance with the width of the main body or the like is used. Thereby, the main body is reinforced, and is hardly bent by the weight of the heavy object. Further, conventionally, since the thickness of the cylinder portion is reduced, it is necessary to use a hard material excellent in pressure resistance such as alloy steel for machine structure (for example, chromium-molybdenum steel). However, there is a problem that hard materials are difficult to process and lack productivity. On the other hand, when the thickness of the cylinder portion is increased, a relatively soft material such as carbon steel for mechanical structure (for example, S45C) that can be easily processed can be used, and the productivity is excellent. .

The invention described in claim 2 of the present invention is claim 1
Wherein the main body includes a storage portion that is recessed by opening a lower surface of the main body, and the single-acting cylinder and the moving unit are disposed in the storage portion. It has a configuration.

According to this structure, in addition to the function of the first aspect,
The following operation is obtained. (1) Since a single-acting cylinder is provided in the storage section,
Compared to the case of disposing a single-acting cylinder on the lower surface of the prismatic main body, the overall height of the heavy load transporting cart can be reduced,
The capacity of the container and the like can be effectively used, and even when a heavy object is placed, the center of gravity is low, and the safety during the transfer operation can be improved. (2) Since the single-acting cylinder and the moving means are provided in the storage section, it is possible to prevent dust and the like from entering the moving parts such as the single-acting cylinder and the moving means. Excellent. (3) Since the main body is reinforced by both sides of the concave portion, the main body does not bend due to the weight of a heavy object or the like, and the durability is excellent. Here, the main body includes a top plate, and side walls vertically provided on both side portions of the top plate, and a single-acting cylinder and a moving unit are provided in a storage portion, which is a space formed by the top plate and the side walls. A device provided with a means, a device provided with a groove on the lower surface of a polygonal prism such as a quadrangular prism, a trapezoidal prism, a hexagonal prism, or the like and used as a storage portion is used. In the case where the main body is formed by the top plate and the side wall, the main body can be easily manufactured by combining the plate-like bodies, so that the productivity is excellent.

The third aspect of the present invention is the first aspect.
Or the heavy object transporting trolley according to 2, wherein a plurality of the single-acting cylinders are provided.

According to this configuration, the following operation can be obtained in addition to the operation of the first or second aspect. (1) By extending the piston portions of the plurality of single-acting cylinders to raise the main body, the main body can be stably supported, and the safety is excellent. (2) By providing a plurality of single-acting cylinders, the maximum weight of a heavy object that can be conveyed can be increased. (3) Since the main body is supported by a plurality of single-acting cylinders, a small single-acting cylinder can be used. Excellent in storage and storage.

The invention described in claim 4 of the present invention is claim 3.
3. The heavy object transporting vehicle according to claim 1, wherein at least one of the single-acting cylinders has a plurality of the ports.

According to this structure, in addition to the function of claim 3,
The following operation is obtained. (1) Since the single-acting cylinder has a plurality of ports, the single-acting cylinders can be connected continuously by a pressure transmission pipe, and the pressure can be reduced as in the case of having only one port. Since there is no need to branch the transmission pipe, the amount of use of the pressure transmission pipe and its joint can be reduced, and the space for routing the pressure transmission pipe can be reduced.

Here, as a single-acting cylinder having a plurality of ports, a cylinder having a plurality of ports on a base side of a cylinder portion is used. The number of ports may be two when connecting single-acting cylinders linearly, but is appropriately selected depending on the connection method of single-acting cylinders and the like. When connecting a single-acting cylinder continuously, it is preferable to use one having a plurality of ports other than the last-stage single-acting cylinder. This is because all the single-acting cylinders can be connected in a straight line. The port to which the pressure transmission pipe is not connected is provided with a plug so that the pressure transmission medium such as oil or water does not flow out.

The fifth aspect of the present invention is the first aspect of the present invention.
It is a heavy goods transporting cart according to any one of claims 1 to 4,
The single-acting cylinder has a configuration in which a grounding member is provided at a lower end portion of the piston portion and has a lower surface area larger than an area of the lower surface of the piston portion.

With this configuration, the following operation can be obtained in addition to the operation of any one of the first to fourth aspects. (1) When the main body is lifted by extending the single-acting cylinder, the grounding member is provided, so that the grounding area of the piston portion is widened, the main body can be stably supported, and the safety is excellent.

Here, as the shape of the grounding member, a flat plate shape, a shape having an uneven portion on the lower surface, or the like is used. Also,
In some cases, a plurality of grounding members are connected by a flat plate or the like to increase the installation area and stably support the main body.

[0020] The invention described in claim 6 of the present invention is claim 5.
Wherein the width of the grounding member is smaller than the width of the opening of the storage portion of the main body.

According to this structure, in addition to the function of claim 5,
The following operation is obtained. (1) Since the width of the grounding member is smaller than the width of the opening of the storage portion, when the single-acting cylinder is contracted, the grounding member is stored in the storage portion. In addition, the capacity of the container or the like can be effectively used, and even when a heavy object is placed, the center of gravity is low, and the safety during the transfer operation can be improved.

The invention described in claim 7 of the present invention is claim 1.
7. The heavy goods transporting vehicle according to any one of claims 1 to 6, wherein one end is connected to the main body and / or a cylinder part of the single-acting cylinder, and the other end is the cylinder of the single-acting cylinder. It has a structure provided with an elastic body connected to the piston part and / or the grounding member.

With this configuration, the following operation can be obtained in addition to the operation of any one of the first to sixth aspects. (1) After the main body descends while contracting the single-acting cylinder by its own weight, even if the tip of the piston abuts against the floor surface of the container, the piston is raised by the restoring force of the elastic body. Therefore, when moving the heavy object transporting cart, the tip of the piston portion can be moved smoothly without being caught on the floor of the container or the like. Here, as the elastic body, a helical spring, a leaf spring,
A rubber body or the like is used.

The invention described in claim 8 of the present invention is claim 1
8. The heavy object transporting vehicle according to claim 7, further comprising a guide roller partially projecting from a side portion of the main body and disposed on the main body. 9.

With this configuration, the following operation can be obtained in addition to the operation of any one of the first to seventh aspects. (1) The guide rollers guide the heavy goods carrier on the inner side wall of the rail when the heavy goods carrier is placed and moved on the rails arranged in the container or the floor of the warehouse, so that the heavy goods carrier runs smoothly. Excellent workability.

According to a ninth aspect of the present invention, there is provided a heavy object transporting device, wherein the heavy object transporting vehicle according to any one of the first to eighth aspects and the heavy object transporting vehicle are fitted and run. And a rail.

According to this configuration, the following operation is obtained in addition to the operation of any one of the first to eighth aspects. (1) Even on the floor of a container with irregularities on the surface, etc., it is possible to stably move the heavy goods carrier on the rails by simply arranging the rails. It is possible to prevent accidents that can no longer be performed and to significantly improve workability. (2) In the case where the heavy object transporting truck has a guide roller,
Since the guide roller is guided by the inner side wall of the rail, the heavy object transport vehicle can be smoothly run, and the workability is excellent. (3) A rail is placed on the floor of a container or the like, and heavy goods are transported to the back of the container by a heavy goods transport trolley, so that the floor of the container or the like is not damaged and the durability of the container car or the like can be improved. it can. (4) By arranging two to a plurality of heavy object transfer devices in parallel and placing the heavy objects on these, it is possible to easily transfer a wide heavy object.

[0028]

(Embodiment 1) A heavy object carrier according to Embodiment 1 of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a main part of a heavy object transporting truck according to a first embodiment of the present invention, FIG. 2 is a plan view of a main part partially transparent, and FIG. FIG. 4 is a side sectional view of a main part in a state where the single-acting cylinder is extended. FIG. 2 is a plan view of a main part seen through the top plate. 1 to 4, reference numeral 1 denotes a heavy object carrier according to the first embodiment of the present invention, 2 denotes a main body having a substantially inverted concave cross section, 2 a denotes a top plate of the main body 2, and 2 b denotes both sides of the top plate 2 a. Side walls hanging down,
Reference numeral 2c denotes a storage part which is a space formed by the top plate 2a and the side walls 2b and 2b, and the lower surface of the main body 2 is open. 3 denotes a moving means disposed at the lower part of the main body 2;
The shafts 3b fixed to b are moving rollers that are supported by the shaft 3a and partially extend below the side walls 2b. Reference numeral 4 denotes a single-acting cylinder that is operated by hydraulic pressure, water pressure, or the like, with the piston portion 4a facing downward, the cylinder portion 4b fixed to the side wall 2b, and two front and rear portions fixed to the storage portion 2c. The ports are respectively formed before and after the cylinder portion 4b. The cylinder portion 4b of the single-acting cylinder 4 is formed of a steel material such as carbon steel for machine structure (for example, S45C) with the same width as the storage portion 2c. 5
Is a grounding member fixed to the lower end of the piston portion 4a of the single-acting cylinder 4 and has a flat lower surface, 5a is an elastic locking portion extending in front of and behind the grounding member 5, and 5b is a grounding member 5.
A grounding member guide 6 is disposed on the upper surface of the main body 2 and guided by the inner surfaces of both side walls 2b, 2b of the main body 2 when the grounding member 5 moves up and down. Elastic members respectively locked to the body locking portions 5a, 7 are guide roller support portions provided in front and rear of the main body 2, and 8 are provided on the guide roller support portions 7 so as to partially protrude from side portions of the main body 2. The installed guide roller 9 is a single-acting cylinder 4 having two ends.
The first pressure transmission pipe 10, such as a steel pipe or a hard rubber pipe, which is connected to the opposed ports 4c of each other and through which a pressure transmission medium such as oil or water flows, has a cylinder part 4 of a single-acting cylinder 4 at one end.
b is a second pressure transmission pipe such as a steel pipe or a hard rubber pipe connected to the open port 4c of b and through which the pressure transmission medium flows. A plug 4d is provided at the port 4c of the cylinder portion 4b of the single-acting cylinder 4 to which nothing is connected. 11
Is a coupler fixed to the other end of the second pressure transmission pipe 10 and connected to a hydraulic pump or a hydraulic pump, and G is an upper surface of a rail or the like on which the heavy goods transporting trolley 1 is mounted. Here, as the main body, one having a top plate, a reinforcing portion projecting from the lower surface of the top plate and having a lower end positioned above the lower end of the moving means, a square pole, a trapezoidal pillar, a hexagonal pillar, or the like In some cases, a groove is provided on the lower surface of the polygonal column, and this is used as a storage section.
When the main body is formed of only two side walls fixedly sandwiching a single-acting cylinder, the main body can be prevented from bending and can be reduced in weight.

With respect to the heavy object transporting vehicle according to the first embodiment of the present invention configured as described above, the single-acting cylinder is extended from the contracted state (hereinafter, contracted state) (hereinafter, extended state). And the case of changing from the extended state to the contracted state will be described below with reference to the drawings. 1. When the state changes from the contracted state (FIG. 3) to the expanded state (FIG. 4). When a hydraulic pump or the like is connected to the coupler 11 and pressure is transmitted to the single-acting cylinder 4 via the first and second pressure transmission pipes 9 and 10, The piston 4a is pushed downward from the cylinder 4b while extending the elastic body 6, and the grounding member 5 is grounded on the upper surface G. When the piston portion 4a is further pushed out downward, the main body 2 is connected to the single-acting cylinder 4 and the grounding member 5.
While being lifted apart from the upper surface G (extended state). 2. When the state changes from the extended state (FIG. 4) to the contracted state (FIG. 3) By lowering the pressure in the single-acting cylinder 4 (the pressure transmission medium such as oil or water flows out of the coupler 11), the main body 2 is moved by its own weight. Then, the piston 4a is lowered while being accommodated in the cylinder 4b, and the moving roller 3b is grounded on the upper surface G (at this time, the ground member 5 is also grounded on the upper surface G). After the main body 2 descends and the moving roller 3b comes into contact with the upper surface G, the grounding member 5 and the piston portion 4a are pulled up by the restoring force of the elastic body 6 and are separated from the upper surface G (contracted state). In the first embodiment, two single-acting cylinders 4 are used. However, three or more single-acting cylinders 4 can be similarly used.

(Embodiment 2) Next, a heavy object transport apparatus according to a second embodiment of the present invention including the heavy object transport vehicle of Embodiment 1 will be described with reference to the drawings.

FIG. 5 is a perspective view of a main part of a heavy object conveying device according to a second embodiment of the present invention. In FIG. 5, reference numeral 1 denotes a heavy object conveying device according to the first embodiment, 2 denotes a main body, 2a denotes a top plate, 2b denotes a side wall, 7 denotes a guide roller support, 8 denotes a guide roller, 10 denotes a second pressure transmission pipe, Numeral 11 denotes couplers, which are the same as those in the first embodiment, and are denoted by the same reference numerals and description thereof is omitted. Reference numeral 21 denotes a heavy load transport device according to the second embodiment of the present invention, 22 denotes a rail having a substantially concave cross section made of a grooved steel or the like on which the heavy load transport vehicle 1 is fitted, and 22a denotes an inner bottom surface of the rail 22; 22 b is an inner side surface of the rail 22.

A method of transferring a heavy object into a dry container by using the heavy object transfer device according to the second embodiment having the heavy object transfer truck of the first embodiment configured as described above will be described below with reference to the drawings. It will be described with reference to FIG. FIGS. 6A and 6B are main part perspective views showing a working state using the heavy object transport device according to the second embodiment of the present invention. FIGS. 7A and 7B show a state in which a heavy object is placed on a square member for placing a heavy object. It is a front schematic diagram which shows the method of placing. 6 and 7, reference numeral 1 denotes a heavy object transporting cart;
2 is a main body, 2a is a top plate, 2b is a side wall, 21 is a heavy object conveying device, and 22 is a rail. These are the same as those in Embodiment 1 and FIG. The description is omitted. Reference numeral 23 denotes two heavy object transport devices 2 on the floor surface.
The dry container 24 has a top surface formed at substantially the same height as the floor surface of the dry container 23 and a rail 22 protruding from an opening of the dry container 23 is placed on the dry container 24. Rail supporting square members arranged side by side on the opening side, and 25 is a main body 2 of two heavy load transport vehicles 1
A heavy object 26 such as a coil placed on the top is a heavy object 2 for fixing the heavy object 25 on the main body 2 of the important object transporting vehicle 1.
5 are pawls inserted before and after the lower surface of the lower surface 5, and 27 is a heavy object 25.
Is a heavy material placing square that is placed after being transported.
The height of the heavy object mounting square 27 is lower than the upper surface of the extended heavy object transport vehicle 1 (main body 2) on the rail 22, and the contracted state of the heavy object transport vehicle 1 on the rail 22.
(Main body 2) is formed higher than the upper surface.

In loading the heavy object 25 into the dry container 23, first, the rail supporting square members 24 are arranged substantially in parallel near the opening of the dry container 23. Next, the rails 22 are arranged substantially parallel from the opening side of the dry container 23 toward the back. At this time, the dry container 23
The rails 22 protruding from the openings are mounted on the rail supporting square members 24. Next, the heavy goods transport carts 1 are respectively arranged in the rails 22. Next, the heavy object 25 is placed on the heavy object transporting trolley 1 by a crane or the like,
Fix with 6. Next, the worker pushes the heavy object 25 to a predetermined portion of the dry container 23. When the heavy object 25 is conveyed to the predetermined portion, each heavy object conveyance truck 1 is set in the extended state (FIG. 4). Next, the heavy load placing rectangular material 27 is inserted below the heavy load 25 (FIG. 7A), and each heavy load transfer cart 1 is brought into a contracted state. Thus, the heavy object 25 is placed only on the heavy object placing square 27 (FIG. 7).
(B)). Next, the heavy object transfer device 21 is pulled out of the dry container 23, and the heavy object 25 placed on the heavy material placing square 27 is lashed or the like, so that the dry container 2 is removed.
Tight on 3.

According to the heavy object transporting apparatus of the second embodiment of the present invention provided with the heavy object transporting vehicle of the first embodiment configured as described above, the following operation can be obtained. (1) A pressure transmission medium such as oil or water is passed through the first and second pressure transmission pipes 9 and 10 to the cylinder portion 4 b of the single-acting cylinder 4.
The piston portion 4a of the single-acting cylinder 4 extends downward, the lower surface of the grounding member 5 abuts against the inner bottom surface 22a of the rail 22, and the body 2 is supported by the single-acting cylinder 4. To rise. (2) By letting the pressure transmitting medium such as oil or water escape from the single-acting cylinder 4 through the first and second pressure transmitting pipes 9 and 10, the main body 2 causes the single-acting cylinder 4 to contract by its own weight. Descend. (3) Since it has the main body 2 that moves up and down and the moving means 3, the heavy object 25 is placed on the upper surface of the main body, and the heavy object transporting cart is moved to a predetermined position inside the dry container 23, After the main body 2 is lifted, the weights 27 (the height of the upper surface is higher than the upper surface of the main body 2 when raised and lower than the upper surface of the main body 2 when lowered) (Lower object), the main body 2 is lowered, and then the heavy object transporting device 21 is pulled back. Thereby, the heavy object 25 can be reliably mounted on the heavy object mounting square member 27 at a desired position. (4) When the main body 2 is moved up and down, the grounding member 5 comes into contact with the inner bottom surface 22a of the rail 22, and the heavy object 25 is moved up and down based on the inner bottom surface 22a. The overall height of the device 21 can be kept low,
The capacity of the dry container 23 can be effectively used, and even when the heavy object 25 is placed, the center of gravity is low, and the safety at the time of carrying work can be improved. (5) Since the heavy object 25 is placed on the main body 2 reinforced by the side wall 2b, the moving means 3, the single-acting cylinder 4, etc., it is harder to bend compared to the case where a heavy object is placed on a plate-like body or the like. Excellent durability. (6) Since the heavy object 25 is placed on the upper surface of the main body 2, there is no need to separately provide a plate-like body for placing the heavy object,
Dry container 2 that can keep the height of the entire device low
3 can be effectively used, and even when the heavy object 25 is placed, the center of gravity is low and the safety during the transport operation can be improved. (7) Since the single-acting cylinder 4 is disposed in the storage section 2c, the overall height of the heavy-load transporting cart 1 is reduced as compared with the case where the single-acting cylinder is disposed on the lower surface of the prismatic main body. As a result, the capacity of the dry container 23 can be effectively used, and even when the heavy object 25 is placed, the center of gravity is low, so that the safety during the transfer operation can be improved. (8) By extending the piston portions 4a of the plurality of single-acting cylinders 4 to raise the main body 2, the main body 2 can be stably supported, and the safety is excellent. (9) By providing a plurality of single-acting cylinders 4, the maximum weight of heavy objects that can be conveyed can be increased. (10) Since the thickness of the cylinder portion 4b is formed to be large, it is not necessary to use a hard material having excellent pressure resistance such as alloy steel for machine structure (e.g., chromium-molybdenum steel). Carbon steel for machine structure that is easy to process (for example, S
45C), and relatively soft materials can be used,
Excellent productivity. (11) Since the single-acting cylinder 4 has a plurality of ports 4c, the single-acting cylinder 4 can be connected linearly with the first and second pressure transmitting pipes 9 and 10, and the pressure transmitting pipe It is not necessary to branch the pressure transmission pipes, so that the amount of use of the pressure transmission pipe and its joint can be reduced, and the space for drawing the pressure transmission pipe can be reduced. (12) Since the grounding member 5 is provided when the main body 2 is lifted by extending the single-acting cylinder 4, the piston 4
The contact area of a is widened, the main body 2 can be stably supported, and the safety is excellent. (13) Since the width of the grounding member 5 is smaller than the opening width of the storage portion 2c, when the single-acting cylinder 4 is contracted,
Is stored in the storage section 2c, the overall height of the heavy goods transporting trolley 1 can be reduced, the capacity of the dry container 23 can be effectively used, and the center of gravity is low even when the heavy goods 25 are placed. It is possible to enhance safety during the transfer operation. (14) After the main body 2 descends while contracting the single-acting cylinder 4 by its own weight, even if the tip of the piston 4a is in contact with the rail 22, the restoring force of the elastic body 6 causes the piston 4a to return. Is lifted upward, so that when moving the heavy object transporting trolley 1, the rail 2 of the piston portion 4a
2 can be smoothly moved without being caught on the inner bottom surface 22a. (15) When placing and moving the heavy object transporting trolley 1 on the rail 22, the guide roller 8 is moved by the inner side surface 22 b of the rail 22.
, The heavy object transporting vehicle 1 can be smoothly run, and workability is excellent. (16) Even on the floor surface of the dry container 23 having irregularities on the surface or the like, the heavy goods transporting trolley 1
Can be stably run on the rails 22, and an accident that the heavy object transporting truck 1 cannot move due to tripping of the unevenness can be prevented and workability can be remarkably improved. (17) When the heavy load transport vehicle 21 has the guide roller 8, the guide roller 8 is guided by the inner side surface 22b of the rail 22, so that the heavy load transport vehicle 1 can run smoothly and the workability is improved. Excellent. (18) The rail 22 is arranged on the floor of the dry container 23 and the heavy object 25 is moved by the heavy object transporting trolley 21 to the dry container 2.
3, the floor of the dry container 23 is not damaged and the durability of the dry container 23 can be improved. Note that, in the second embodiment, two heavy load transporting devices 21 are used, but the number is appropriately selected according to the shape and weight of the heavy load. In the second embodiment, the weight 2
Although the case where 5 is loaded in the dry container 23 has been described, the case where the 5 is loaded on a truck bed, a freight car, or the like can be similarly implemented.

As described above, according to the present invention, the following advantageous effects can be obtained. According to the first aspect of the present invention, the following effects are obtained. (1) The pressure transmitting medium flows into the single-acting cylinder through the pressure transmitting pipe, whereby the piston portion of the single-acting cylinder extends downward, the lower end is grounded, and the main body is supported by the single-acting cylinder. Rise in state. (2) By letting the pressure transmitting medium escape from the single-acting cylinder through the pressure transmitting pipe, the main body descends while contracting the single-acting cylinder by its own weight. (3) Since it has a main body that moves up and down and moving means, a heavy object is placed on the upper surface of the main body, and the heavy object transport cart is moved to a predetermined position inside a container or the like, and the main body is raised. After that, a member for placing a heavy object such as a timber is placed below the heavy object (the height of the upper surface is higher than the upper surface of the main body when raised, and lower than the upper surface of the main body when lowered) Then, the main body is lowered, and thereafter, the operation of pulling back only the heavy object transporting cart is performed. Thus, the heavy object can be reliably placed on the member on which the heavy object such as the square bar at the desired position is placed. (4) When the main body is moved up and down, the lower end surface of the piston portion of the single-acting cylinder comes into contact with the floor surface of a container or the like, and a heavy object is moved up and down based on this floor surface, so that the structure is simplified. The overall height of the heavy goods transport cart can be kept low, and the volume of containers etc. can be used effectively,
Even when a heavy object is placed, the center of gravity is low, so that the safety during the transfer operation can be improved. (5) Compared to a case where a heavy object is placed on a plate-like body or the like, the heavy object is placed on the main body reinforced by the moving means or the single-acting cylinder or the like, so that it is hardly bent and has excellent durability. (6) Since a heavy object is placed on the upper surface of the main body, there is no need to separately provide a plate-like body or the like for placing a heavy object, and the height of the entire apparatus can be kept low, and the volume of the container and the like can be reduced. In addition to being able to be used effectively, even when a heavy object is placed, the center of gravity is low, so that the safety at the time of carrying work can be enhanced.

According to the invention described in claim 2, according to claim 1
In addition to the effects described above, the following effects are provided. (1) Since a single-acting cylinder is provided in the storage section,
Compared to the case of disposing a single-acting cylinder on the lower surface of the prismatic main body, the overall height of the heavy load transporting cart can be reduced,
The capacity of the container and the like can be effectively used, and even when a heavy object is placed, the center of gravity is low, and the safety during the transfer operation can be improved. (2) Since the single-acting cylinder and the moving means are provided in the storage section, it is possible to prevent dust and the like from entering the moving parts such as the single-acting cylinder and the moving means. Excellent. (3) Since the main body is reinforced by both sides of the concave portion, the main body does not bend due to the weight of a heavy object or the like, and the durability is excellent.

According to the invention described in claim 3, according to claim 1
In addition to the effects of 2 or 3, the following effects are provided. (1) By extending the piston portions of the plurality of single-acting cylinders to raise the main body, the main body can be stably supported, and the safety is excellent. (2) By providing a plurality of single-acting cylinders, the maximum weight of a heavy object that can be conveyed can be increased.

According to the invention set forth in claim 4, according to claim 3,
In addition to the effects described above, the following effects are provided. (1) Since the single-acting cylinder has a plurality of ports, the single-acting cylinders can be continuously connected by the pressure transmitting pipe, and the pressure transmitting pipe needs to be branched as in the case of parallel connection. Since there is no pressure transmission pipe, the amount of use of the pressure transmission pipe and its joint can be reduced, and the space for routing the pressure transmission pipe can be reduced.

According to the invention described in claim 5, according to claim 1
The following effects are provided in addition to the effects described in any one of (4) to (4). (1) When the main body is lifted by extending the single-acting cylinder, the grounding member is provided, so that the grounding area of the piston portion is widened, the main body can be stably supported, and the safety is excellent.

According to the invention of claim 6, according to claim 5,
In addition to the effects described above, the following effects are provided. (1) Since the width of the grounding member is smaller than the width of the opening of the storage portion, when the single-acting cylinder is contracted, the grounding member is stored in the storage portion. In addition, the capacity of the container or the like can be effectively used, and even when a heavy object is placed, the center of gravity is low, and the safety during the transfer operation can be improved.

According to the invention of claim 7, according to claim 1,
The following effects are obtained in addition to the effects described in any one of the first to sixth aspects. (1) After the main body descends while contracting the single-acting cylinder by its own weight, even if the tip of the piston abuts against the floor surface of the container, the piston is raised by the restoring force of the elastic body. Therefore, when moving the heavy object transporting cart, the tip of the piston portion can be moved smoothly without being caught on the floor of the container or the like.

According to the invention of claim 8, according to claim 1,
The following effects are obtained in addition to the effects described in any one of the first to seventh aspects. (1) The guide rollers guide the heavy goods carrier on the inner side wall of the rail when the heavy goods carrier is placed and moved on the rails arranged in the container or the floor of the warehouse, so that the heavy goods carrier runs smoothly. Excellent workability.

According to the ninth aspect of the present invention, the first aspect is provided.
The following effects are obtained in addition to the effects described in any one of the first to eighth aspects. (1) Even on the floor of a container with irregularities on the surface, etc., it is possible to stably move the heavy goods carrier on the rails by simply arranging the rails. It is possible to prevent accidents that can no longer be performed and to significantly improve workability. (2) In the case where the heavy object transporting truck has a guide roller,
Since the guide roller is guided by the inner side wall of the rail, the heavy object transport vehicle can be smoothly run, and the workability is excellent. (3) A rail is placed on the floor of a container or the like, and heavy goods are transported to the back of the container by a heavy goods transport trolley, so that the floor of the container or the like is not damaged and the durability of the container car or the like can be improved. it can. (4) By arranging two to a plurality of heavy object transfer devices in parallel and placing the heavy objects on these, it is possible to easily transfer a wide heavy object.

[0044]

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a heavy object transporting cart according to a first embodiment of the present invention.

FIG. 2 is a plan view of a main part of the heavy load transporting vehicle according to the first embodiment of the present invention, which is partially transparent;

FIG. 3 is a side cross-sectional view of a main part of the heavy load transporting cart according to the first embodiment of the present invention in a state where a single-acting cylinder is contracted.

FIG. 4 is a side cross-sectional view of a main part of the heavy load transporting cart according to the first embodiment of the present invention in a state where a single-acting cylinder is extended.

FIG. 5 is a perspective view of a main part of a heavy object transport device according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a main part showing a working state using the heavy object transfer device according to the second embodiment of the present invention.

FIG. 7A is a schematic front view illustrating a method of placing a heavy object on a heavy material mounting square member. FIG. 7B is a schematic front view illustrating a method of mounting a heavy object on a heavy object mounting square member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heavy object transporting cart in Embodiment 1 of the present invention 2 Main body 2a Top plate 2b Side wall 2c Storage portion 3 Moving means 3a Shaft 3b Moving roller 4 Single-acting cylinder 4a Piston portion 4b Cylinder portion 4c Port 5 Ground member 5a Elasticity Body locking section 5b Ground member guide 6 Elastic body 7 Guide roller support section 8 Guide roller 9 First pressure transmission pipe 10 Second pressure transmission pipe 11 Coupler 21 Heavy object transport device 22 in the second embodiment of the present invention 22 Rail 22a Inner bottom surface 22b Inner side surface 23 Dry container 24 Rail supporting square material 25 Heavy material 26 Stop 27 Heavy material placing square material

Claims (9)

[Claims] 1. A main body, a single-acting cylinder disposed on the main body with a piston portion facing down, a pressure transmission pipe having one end connected to a port of the single-acting cylinder, and a lower part of the main body. And a moving means provided. 2. The device according to claim 1, wherein the main body includes a storage portion that is formed by opening a lower surface of the main body, and the single-acting cylinder and the moving unit are disposed in the storage portion. Item 2. A heavy object transporting cart according to Item 1. 3. The heavy object transporting vehicle according to claim 1, comprising a plurality of said single-acting cylinders. 4. The heavy object transporting vehicle according to claim 3, wherein at least one of said single-acting cylinders has a plurality of said ports. 5. A grounding member disposed at a lower end of said piston portion of said single-acting cylinder and having a lower surface area larger than an area of a lower surface of said piston portion. The heavy object transporting vehicle according to any one of the above. 6. The heavy object transporting vehicle according to claim 5, wherein a width of the grounding member is smaller than an opening width of the storage portion of the main body. 7. An elastic body having one end connected to the main body and / or the cylinder of the single-acting cylinder, and the other end connected to the piston and / or the grounding member of the single-acting cylinder. 2. The method according to claim 1, further comprising:
7. The heavy object transporting cart according to any one of claims 6 to 6. 8. The heavy object according to claim 1, further comprising a guide roller partially projecting from a side portion of the main body and disposed on the main body. Transport trolley. 9. A weight comprising: the heavy object transporting vehicle according to any one of claims 1 to 8; and a rail on which the heavy object transporting vehicle is fitted and travels. Object transport device.