JP7453103B2 - Luggage transportation system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a load carrying system, and particularly to a system for transporting heavy loads using a trolley.

In light of recent social conditions, companies have made it important to promote the employment of women and to improve the status of female employees. For example, due to the effects of the Act on Special Treatment of Dioxins, companies have recently been working to improve the working environment and increasing the number of female workers at waste incineration facilities, where there were traditionally many male workers. . Furthermore, due to the aging of society, there are increasing opportunities for older people, who would traditionally have reached retirement age, to continue working or to be hired at a new workplace.

As a result of these efforts being made throughout society, it has become necessary for women and the elderly to perform jobs that involve a heavy workload that were previously performed by (young) male workers. However, it is difficult to bridge the physical differences between women and the elderly and men. For example, the ability to carry heavy loads is greater for men than for women and the elderly, because women and the elderly are generally less powerful than men. Furthermore, even among men, there are quite a few who are powerless. Therefore, various techniques have been developed that allow even a weak worker to easily transport cargo by using a trolley (for example, see Patent Document 1).

Utility model registration No. 3174344

However, with conventional baggage transportation techniques, it is necessary to temporarily place the baggage on a temporary storage stand such as a pallet or a trolley. For example, Patent Document 1 discloses a cart with a pallet that can transport cargo together with a pallet. Even when cargo is transported using this pallet-equipped cart, the cargo placed on the floor must be placed on the pallet at least once. Therefore, it may be difficult for a weak worker to load a heavy load onto a pallet.

Therefore, an object of the present invention is to provide a system that allows even a weak worker to easily transport cargo.

In one aspect, the cart includes a cart, a cargo stopper that contacts the front surface of the cargo placed at a predetermined position on a floor surface, and a loading member fixed to a stationary member, and the cart includes a cargo platform, and the cargo platform. a slope member attached to the front end of the loading platform, a handle attached to the loading platform, a loading arm rotatably supported by the handle, and a loading roller rotatably supported by the front end of the loading arm. and a jack mechanism that pushes up the rear end of the loading platform higher than the tip thereof, and the loading roller is configured to move the slope member when the loading arm is in an arm standby position. A load carrying system is provided that protrudes forward beyond the tip of the.

In one aspect, the slope member has a front end that is close to or in contact with the floor surface, a rear end that is connected to an upper surface of the front end of the loading platform, and a slope that is inclined at a predetermined inclination angle from the front end to the rear end. It has a surface.
In one aspect, the load pushing roller includes a one-way clutch that limits the rotational direction of the load pushing roller to one direction in which the load is rotated upward about the load stopper.

In one aspect, the loading platform includes two side frames, a front frame that connects the front ends of each side frame, a rear frame that connects the rear ends of each side frame, and the front frame and the rear frame. It includes a plurality of rollers arranged between frames, and a gear mechanism that limits the rotation direction of the plurality of rollers.
In one aspect, the baggage stopper has an inclined surface that slopes at a predetermined angle, and the sloped surface contacts the front surface of the baggage placed on the floor surface.

According to the present invention, by cooperating the load pushing arm mechanism with the load stopper, the load can be loaded from the floor onto the slope member simply by moving the cart. Furthermore, the cargo can be loaded onto the platform of the cart by simply moving the cart and pressing the cargo on the slope member against the loading member. When lowering the cargo on the platform to the floor, the jack mechanism moves the rear end of the platform higher than the tip, allowing the cargo to slide from the platform onto the floor. Therefore, even a weak worker can transport the cargo from a predetermined position to a desired transport position.

FIG. 1 is a side view schematically showing a luggage transportation system according to an embodiment. FIG. 2(a) is a top view schematically showing the loading platform of the truck in the luggage transportation system shown in FIG. 1, and FIG. FIG. 2C is a diagram schematically showing the right side surface of the platform of the cart of the luggage transport system shown in FIG. 1. FIG. FIG. 3(a) is a side view schematically showing a load pushing arm mechanism according to an embodiment, and FIG. 3(b) is a schematic top view of the load pushing arm mechanism shown in FIG. 3(a). . FIG. 4 is a diagram schematically showing a state in which the load pushing arm and the load pushing roller shown in FIGS. 3(a) and 3(b) have been moved to the retracted position. FIGS. 5(a) and 5(b) are schematic diagrams of each process of loading cargo onto the platform of a trolley. FIG. 6(a) and FIG. 6(b) are schematic diagrams of each process of loading cargo onto the platform of a trolley. FIGS. 7(a) and 7(b) are schematic diagrams of each process of loading cargo onto the platform of a trolley. FIG. 8(a) and FIG. 8(b) are schematic diagrams of each process of loading cargo onto the platform of a trolley. FIGS. 9(a) and 9(b) are schematic diagrams of each process of loading cargo onto the platform of a trolley. FIGS. 10(a) and 11(b) are schematic diagrams of each process of moving the cargo from the platform of the cart to the floor. FIG. 11 is a schematic diagram showing a state in which the luggage is lowered from the cart onto the floor. FIG. 12 is a side view schematically showing a luggage transportation system according to another embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view schematically showing a luggage transportation system according to an embodiment. FIG. 2(a) is a top view schematically showing the loading platform of the truck in the luggage transportation system shown in FIG. 1, and FIG. FIG. 2(c) is a diagram schematically showing the right side surface of the platform of the cart of the luggage transport system shown in FIG. 1. FIG. The luggage transportation system shown in FIG. 1 is a system that uses a cart 1 to transport luggage 10 placed on a floor surface FL to a desired transportation position. In addition, in this specification, the direction of the double-headed arrow A shown in FIG. 1 is defined as the front-back direction, and the direction of the double-headed arrow B shown in FIG. 2(a) is defined as the left-right direction.

In this embodiment, the cargo 10 is a heavy cargo, and is, for example, a drug container storing drugs used in a waste heat boiler attached to a waste incineration facility. Such drug containers have a weight of, for example, about 20 kg, and are stored at a predetermined location in a storage facility such as a warehouse. When using chemicals in a waste heat boiler, an operator must place a chemical container in a predetermined position in the storage facility near the waste heat boiler's chemical injection device, which consists of a chemical pump, a chemical service tank, etc. Transport up to. In this case, the desired transport location for the cargo 10 is near the drug injection device. In this embodiment, by simply operating the cart 1 (for example, moving the cart 1 forward relative to the cargo 10), the drug container (i.e., the cargo 10) placed directly on the floor can be transferred to the cargo platform of the cart 1. It is possible to load it.

As shown in FIG. 1, the luggage conveyance system includes a cart 1 and a luggage stopper 11 that comes into contact with the front surface of the luggage 10 placed at a predetermined position on the floor FL. The luggage stopper 11 has an inclined surface that is obliquely inclined with respect to the vertical direction, and this inclined surface faces the front surface of the luggage 10. In this embodiment, the luggage stopper 11 is removably fixed to the floor surface FL on which the luggage 10 is placed using a fixture (not shown). An example of such a fixture is a bolt extending from the underside of the load stopper 11. In this case, a hole in which a bolt can be engaged is formed in the floor surface FL. In one embodiment, the fixture of the load stopper 11 may be an anchor bolt fixed to the floor surface FL. Alternatively, the luggage stopper 11 may be fixed to the floor surface FL using an adhesive.

The cart 1 shown in FIG. 1 includes a loading platform 2, a slope member 5 attached to the front end of the loading platform 2, a handle 7 extending upward from the rear end of the loading platform 2, and a plurality of wheels 8 attached to the lower surface of the loading platform 2. , a load pushing arm mechanism 24 for pushing the rear surface of the load 10, and a jack mechanism 6 for lifting the rear end of the load platform 2 above the front end. In this embodiment, the wheels 8 are attached to each of the four corners of the loading platform 2.

As shown in FIG. 2(a), the loading platform 2 includes two side frames 2a, 2b, a front frame 2c connecting the front ends of the side frames 2a, 2b, and a rear end of the side frames 2a, 2b. It has a frame structure including a rear frame 2d that connects the parts. Furthermore, in this embodiment, the loading platform 2 includes a plurality of rollers 12A and 12B arranged between the front frame 2c and the rear frame 2d. The rollers 12A (first roller) and the rollers 12B (second roller) are arranged alternately. The rollers 12A and 12B cooperate with a roller rotation restriction device 30, which will be described later, to facilitate the movement of the luggage 10 on the loading platform 2 when loading and unloading the luggage 10 onto the loading platform 2, and to prevent the luggage placed on the loading platform 2 from moving. When transporting the cargo 10, it is used to prevent the cargo 10 from moving on the loading platform 2. In one embodiment, rollers 12A, 12B may be omitted. In this case, the loading platform 2 includes, for example, a top plate (not shown) supported by two side frames 2a and 2b, a front frame 2c, and a rear frame 2d.

As shown in FIG. 1, the slope member 5 includes a tip 5a that is close to or in contact with the floor surface FL on which the luggage 10 is placed, and a slope 5c that extends at a predetermined inclination angle from the tip 5a to the rear end 5b. have. The rear end 5b is fixed to the front frame 2c of the loading platform 2, and the rear end of the slope 5c is connected to the upper surface of the loading platform 2. With such a configuration, the cargo 10 can be transferred smoothly from the slope member 5 to the loading platform 2. Note that, as shown in FIG. 1, when the truck 1 is viewed from the side, the front end of the load pushing arm mechanism 24 projects further forward than the front end 5a of the slope member 5.

The width of the slope member 5 in the left-right direction is the width of the loading platform 2 in the left-right direction (that is, the width between the outer surface of one side frame 2a and the outer surface of the other side frame 2b). may be the same as (distance) or may be smaller. In one embodiment, the truck 1 may have a plurality of (for example, two or three) slope members 5 having a width smaller than the width of the loading platform 2 in the left-right direction. When the truck 1 has a plurality of slope members 5, the plurality of slope members 5 preferably have the same shape and are arranged at equal intervals in the left-right direction of the front frame 2c of the loading platform 2.

In this embodiment, the slope member 5 has a right triangular cross-sectional shape with the slope 5c as the long side when the slope member 5 is viewed in cross section in the front-rear direction. However, the tip 5a of the slope member 5 (i.e., the front end of the slope 5c) approaches or contacts the floor surface FL, and the rear end of the slope member 5 (i.e., the rear end of the slope 5c) is connected to the top surface of the loading platform 2. As long as the cross-sectional shape of the slope member 5 is arbitrary.

As shown in FIG. 1 and FIGS. 2(a) to 2(c), the handle 7 of the truck 1 has two pillars 16A, 16B fixed to the rear end of the loading platform 2, and pillars 16A, 16B. and a lower rod 19 that connects the lower parts of the columns 16A and 16B. In this embodiment, the pillars 16A and 16B are fixed to the upper surfaces of the rear ends of the side frames 2a and 2b, respectively, and extend in the vertical direction. The upper bar 18 functions as a handle for a worker who operates the trolley 1. The lower rod 19 is a member that increases the strength and rigidity of the handle 7, and also functions as a stopper that prevents the cargo 10 on the loading platform 2 from falling from the rear end of the loading platform 2. In one embodiment, the lower bar 19 may be omitted. Furthermore, in one embodiment, the handle 7 may have one or more intermediate bars (not shown) arranged between the upper bar 18 and the lower bar 19.

Both ends of each roller 12A, 12B are rotatably supported by bearings arranged on the side frames 2a, 2b, respectively. Further, the trolley 1 includes a roller rotation limiting device 30 that limits the rotation direction of the roller 12A to one direction and limits the rotation of the roller 12B to one direction opposite to the rotation direction of the roller 12A. In the following, a roller rotation limiting device 30 including a plurality of gear mechanisms 31A, 31B provided in each of the side frames 2a, 2b will be explained. is arbitrary as long as the rotation direction of the rotation direction can be limited to a desired rotation direction.

As shown in FIG. 2(b), each gear mechanism 31A includes a gear with a claw 33A fixed to the rotating shaft of the roller 12A, and a rotating claw 34A rotatably supported on the side frame 2a. Be prepared. The roller rotation limiting device 30 further includes a wire 36A connected to the plurality of rotating claws 34A, a spring 37A to which one end of the wire 36A is connected, and a rotation limiter to which the other end of the wire 36A is connected. A type handle 38A is included.

In this embodiment, one end of the spring 37A is fixed to the inner surface of the rear end of the side frame 2a, and the other end of the spring 37A is connected to one end of the wire 36A. The wire 36A extends from the rear end to the front end of the side frame 2a, and then extends toward the rear end again. Further, the wire 36A extends to the upper end of the column 16A of the handle 7. The rotary handle 38A is rotatably attached to the upper end of the column 16A, and the other end of the wire 36A is connected to the rotary handle 36A.

The claw gear 33A of each gear mechanism 31A has a gear main body having a substantially disc-shaped shape, and a plurality of claws extending from the outer periphery of the gear main body obliquely with respect to the radial direction of the gear main body. The rotating pawl 34A of each gear mechanism 31A is pressed against the outer periphery of the pawl gear 33A by the biasing force of a spring 38A via a wire 36A. When the rotary handle 38A is rotated, the wire 36A is pulled against the biasing force of the spring 38A, allowing the plurality of rotary claws 34A to be rotated simultaneously.

In FIG. 2(b), when the roller 12A attempts to rotate clockwise, the rotating claw 34A engages with the claw of the claw gear 33A, thereby preventing the clockwise rotation of the roller 12A. On the other hand, when the roller 12A tries to rotate counterclockwise, the rotating claw 34A slides on the outer periphery of the claw gear 33A (that is, on the outer surface of the claw), so the counterclockwise rotation of the roller 12A is prevented. Permissible. When the rotary handle 38A is rotated and the wire 36A is pulled until the engagement between the rotary claw 34A and the claw of the claw gear 33A is released, the roller 12A can freely rotate clockwise and counterclockwise. Become.

The gear mechanism 31B has substantially the same configuration as the gear mechanism 31A described above, but differs in that the rotation direction of the roller 12B is limited to the opposite direction to the rotation direction of the roller 12A.

As shown in FIG. 2(c), each gear mechanism 31B includes a claw gear 33B fixed to the rotating shaft of the roller 12B, and a rotating claw 34B rotatably supported by the side frame 2b. Be prepared. The roller rotation limiting device 30 further includes a wire 36B connected to the plurality of rotating claws 34B, a spring 37B to which one end of the wire 36B is connected, and a rotation limiter to which the other end of the wire 36B is connected. A type handle 38B is included.

In this embodiment, one end of the spring 37B is fixed to the inner surface of the front end of the side frame 2b, and the other end of the spring 37B is connected to one end of the wire 36B. The wire 36B extends from the front end to the rear end of the side frame 2b and then to the upper end of the column 16B of the handle 7. The rotary handle 38B is rotatably attached to the upper end of the column 16B, and the other end of the wire 36B is connected to the rotary handle 38B.

The claw gear 33B of each gear mechanism 31B has a gear main body having a substantially disk shape, and a plurality of claws extending from the outer periphery of the gear main body obliquely with respect to the radial direction of the gear main body. The direction in which the claws of the claw gear 33B extend with respect to the gear body is exactly opposite to the direction in which the claws of the claw gear 33A extend with respect to the gear body. The rotating pawl 34B of each gear mechanism 31B is pressed against the outer periphery of the pawl gear 33B by the biasing force of a spring 38B via a wire 36B. When the rotary handle 38B is rotated, the wire 36B is pulled against the urging force of the spring 38B, and the plurality of rotary claws 34B can be rotated simultaneously.

In FIG. 2(c), when the roller 12B attempts to rotate counterclockwise, the rotating claw 34B engages with the claw of the claw gear 33B, and the counterclockwise rotation of the roller 12B is blocked. On the other hand, when the roller 12B tries to rotate clockwise, the rotating claw 34B slides on the outer periphery of the claw gear 33B (that is, on the outer surface of the claw), so clockwise rotation of the roller 12B is not allowed. Ru. When the rotary handle 38B is rotated and the wire 36B is pulled until the engagement between the rotary claw 34B and the claw of the claw gear 33B is released, the roller 12B can freely rotate clockwise and counterclockwise. Become.

Next, the load pushing arm mechanism 24 will be explained. The load pushing arm mechanism 24 is a mechanism for easily placing the load 10 on the slope member 5 of the cart 1 in cooperation with the load stopper 11. FIG. 3(a) is a side view schematically showing the load pushing arm mechanism 24 according to one embodiment, and FIG. 3(b) is a schematic top view of the load pushing arm mechanism 24 shown in FIG. 3(a). It is. FIG. 4 is a diagram schematically showing a state in which the load pushing arm and the load pushing roller shown in FIGS. 3(a) and 3(b) have been moved to the retracted position.

The load pushing arm mechanism 24 shown in FIGS. 3(a) and 3(b) includes load pushing arms 25A, 25B, and a load pushing roller 26 rotatably supported at the tips of the load pushing arms 25A, 25B. Arm support members 21A and 21B are provided that rotatably support the load pushing arms 25A and 25B and connect the load pushing arms 25A and 25B to columns 16A and 16B, respectively. In this embodiment, the arm support members 21A and 21B each have a substantially U-shaped cross section, and the rear portions of the load pushing arms 25A and 25B can be accommodated in the recesses thereof.

In this embodiment, the load pushing roller 26 is rotatably supported by a roller shaft 45 whose both ends are connected to the front portions of the load pushing arms 25A, 25B. Furthermore, the load pushing roller 26 has a one-way clutch 46 (see FIG. 3(b)) disposed therein. The one-way clutch 46 limits the rotational direction of the load pushing roller 26 with respect to the roller shaft 45 to one direction (the direction of the arrow shown in FIG. 3(a)).

When the trolley 1 is away from the cargo 10, the load pushing arms 25A, 25B are supported by the arm support members 21A, 21B in a state of extending parallel to the arm support members 21A, 21B. Hereinafter, the positions of the load pushing arms 25A, 25B extending parallel to the arm support members 21A, 21B may be referred to as "arm standby positions."

The load pushing arm 25A is rotatably supported by the arm support member 21A via an arm rotation shaft 28A. The load pushing arm 25A is rotatable upward from an arm standby position where the load pushing arm 25A extends in the horizontal direction. Similarly, the load pushing arm 25B is rotatably supported by the arm support member 21B via an arm rotation shaft 28B, and the load pushing arm 25B is at an arm standby position where the load pushing arm 25B extends in the horizontal direction. It can be rotated upwards from

The arm support member 21A has a through hole 47A (see FIG. 4) formed on both sides thereof, and the load pushing arm 25A has a through hole 48A (see FIG. 4) at a position corresponding to the through hole 47A. have. When the load pushing arm 25A is in the arm standby position, the arm stopper 29A is inserted into the through hole 47A and the through hole 48A. The arm stopper 29A prevents the load pushing arm 25A from rotating relative to the arm support member 21A.

Although not shown, the arm support member 21B similarly has through holes formed on both sides thereof, and the load pushing arm 25B has through holes at positions corresponding to these through holes. When the load pushing arm 25B is in the arm standby position, an arm stopper 29B (see FIG. 3(b)) is inserted into these three through holes, and the arm stopper 29B prevents the load pushing arm 25B from moving toward the arm support member 21B. rotation is prevented.

As shown in FIG. 4, when the arm stopper 29A is pulled out from the arm support member 21A and the load pushing arm 25A, and then the arm stopper 29B is pulled out from the arm support member 21B and the load pushing arm 25B, the load pushing arms 25A, 25B and the load are removed. The push roller 26 can be rotated relative to the arm support members 21A and 21B. In this embodiment, a plurality of cutouts 22A are formed on the upper surface of the arm support member 21A, and a plurality of cutouts 49A are formed on the lower surface of the load pushing arm 25A. By sandwiching the arm stopper 29A between the notch 22A and the notch 49A, the load pushing arm 25A is prevented from rotating downward. Similarly, a plurality of notches are formed on the upper surface of the arm support member 21B, and a plurality of notches are formed on the lower surface of the load pushing arm 25B. By sandwiching the load pushing arm 25B between the notches of the arm support member 21B, the load pushing arm 25B is prevented from rotating downward.

As shown in FIG. 3(a), the pillar 16A has a plurality of through holes 50A arranged in the vertical direction. The arm support member 21A has a through hole corresponding to the through hole 50A, and with the through hole of the arm support member 21A and the through hole 50A of the column 16A lined up, the fixing pin 27A is inserted into these through holes. insert. Although not shown, the pillar 16B also has a plurality of through holes arranged in the vertical direction, and the arm support member 21B has through holes corresponding to the through holes of the pillar 16B. With the through holes of the arm support member 21B and the through holes of the column 16B aligned, the fixing pin is inserted into these through holes. With such a configuration, the load pushing arms 25A, 25B and the load pushing roller 26 are supported by the pillars 16A, 16B via the arm support members 21A, 21B. By changing the through holes of the column 16A and the column 16B on which the arm support members 21A and 21B are supported, the vertical position of the load pushing arms 25A and 25B in the arm standby position can be adjusted to the height of the load 10 (vertical can be changed depending on the direction (size).

Returning to FIG. 1, the jack mechanism 6 will be explained. The jack mechanism 6 shown in FIG. 1 includes a jack handle 6a, a piston cylinder 6b, and a tank 6c in which a working fluid (for example, oil) that moves the piston of the piston cylinder 6b up and down with respect to the cylinder is stored. The jack handle 6a is connected to a tank 6c, and the piston cylinder 6b is connected to the tank 6c via a working fluid piping.

By operating the jack handle 6a, the piston of the piston cylinder 6b moves up and down by the fluid stored in the tank 6c. For example, when the jack handle 6a is swung back and forth relative to the tank 6c, the pressure of the fluid within the tank 6c increases, and the piston of the piston cylinder 6b rises relative to the cylinder. The piston of the piston cylinder 6b is connected to the rear end of the loading platform 2, and as the piston rises, the rear end of the loading platform 2 rises relative to the front end. When the jack handle 6a is rotated around its axis, the tank 6c communicates with the atmosphere, and the pressure of the fluid in the tank 6c decreases to atmospheric pressure. By this operation, the piston of the piston cylinder 6b is housed in the cylinder, and as a result, the rear end of the loading platform 2 of the truck 1 is lowered.

The load carrying system shown in FIG. 1 includes a weight 9 attached to the rear end of the loading platform 2 of the trolley 1. The weight 9 prevents the cart 1 from falling forward when the luggage 10 is placed on the slope member 5. The tank 6c of the jack mechanism 6 is arranged inside the weight 9. With such a configuration, the trolley 1 can be configured compactly, and furthermore, it is possible to prevent an operator from touching the tank 6c and damaging the tank 6c.

Next, a method for transporting the luggage 10 from a predetermined position to a desired transport position using the luggage transport system will be described with reference to FIGS. 5(a) to 11. As shown in FIG. 5(a), the luggage 10 is placed on the floor FL with the front surface of the luggage 10 in contact with a luggage stopper 11 fixed to the floor FL. In this state, the operator moves the cart 1 toward the load 10 so that the load pushing roller 26 of the load pushing roller mechanism 24 comes into contact with the rear surface of the load 10. At this time, the load pushing arms 25A, 25B are in the arm standby position. The front end of the load pushing roller mechanism 24 (that is, the front end of the load pushing roller 26) projects further forward than the front end 5a of the slope member 5, so that the load pushing roller 26 reaches the rear surface of the load 10 before the slope member 5. come into contact with.

As shown in FIG. 5(b), when the cart 1 is further moved toward the load 10, the load pushing roller 26 rotates and the load 10 is rotated about the load stopper 11 as a fulcrum. The rotational direction of the load pushing roller 26 is limited to the direction in which the load 10 is rotated upward by the one-way clutch 46 (see FIG. 3(b)), so that the rear surface of the load 10 is easily lifted and once rotated. The loaded luggage 10 is prevented from falling to the floor FL. The trolley 1 is moved until the front end 5a of the slope member 5 is located below the cargo 10 when viewed in the vertical direction. When the cart 1 is moved to this state, the next work is started.

Arm stoppers 29A and 29B are pulled out from arm support member 21A and load pushing arm 25A, and from arm support member 21B and load pushing arm 25B, respectively. By this operation, as shown in FIG. 6(a), the load pushing arms 25A and 25B rotate upward about the arm rotation shafts 28A and 28B, and the load 10 is rotated downward by its own weight. As a result, the front end 5a of the slope member 5 is inserted between the lower surface of the luggage 10 and the floor surface FL.

As shown in FIG. 6(b), when the front end 5a of the slope member 5 is inserted between the lower surface of the load 10 and the floor FL, the operator further rotates the load pushing arms 25A, 25B. , the load pushing roller 26 is separated from the rear surface of the load 10. The position of the load pushing arms 25A, 25B when the load pushing roller 26 is separated from the rear surface of the load 10 placed on the slope member 5 is the arm retraction position of the load pushing arms 25A, 25B. FIG. 4 shows a state in which the load pushing arms 25A, 25B are moved to the arm retracted position.

In this state, as shown in FIG. 7(a), the worker moves the cart 1 further toward the cargo 10. The lower surface of the luggage 10 slides on the slope 5c of the slope member 5, and the luggage 10 is placed on the slope 5c of the slope member 5, as shown in FIG. 7(b).

Next, as shown in FIG. 8(a), the operator moves the cart 1 away from the cargo stopper 11. For example, the worker moves the trolley 1 backward. In this way, by cooperating the load pushing arm mechanism 24 and the load stopper 11, the heavy load 10 can be easily moved from the floor FL to the slope member 5 by a simple operation of the truck 1 such as moving the truck 1 forward. It can be moved up.

As shown in FIG. 8(b), the cargo conveyance system further includes a cargo loading member 60 fixed to a stationary member such as a wall surface. The loading member 60 is preferably arranged in the vicinity of the load stop 11. In this embodiment, the loading member 60 includes a plate 61 that is a stationary member and is fixed to the wall of the storage facility, and an elastic member 62 that is fixed to the tip of the plate 61. The plate body 61 extends horizontally from the wall surface of the storage facility, and the elastic member 62 has a cylindrical shape extending in the left-right direction on the end surface of the plate body.

The operator moves the cargo 10 on the slope member 5 toward the loading platform 2 by moving the cart 1 forward toward the loading member 60 using the elastic member 62 . The luggage 10 moves obliquely upward on the slope 5c of the slope member 5. When the load 10 moves toward the rear end of the cart 1 on the slope 5c of the slope member 5 to some extent, the load 10 is placed on the platform 2 by its own weight, as shown in FIG. 9(a).

As shown in FIG. 9(b), when the worker further moves the cart 1 toward the loading member 60, the cargo 10 is moved toward the rear end of the cart 1 on the loading platform 2 by the loading member 60. I am made to do so. At this time, the operator rotates the above-mentioned rotary handle 38A to disengage the rotating claw 34A from the claw of the claw gear 33A. This operation allows the roller 12A to rotate clockwise and counterclockwise. On the other hand, the roller 12B is only allowed to rotate clockwise by the gear mechanism 31B. Therefore, since the gear mechanism 31B prevents the luggage 10 from moving toward the front end of the truck 1, the luggage 10 is only allowed to move toward the rear end of the truck 1 by the rollers 12A and 12B. With such a configuration, the luggage 10 can be easily moved on the loading platform 2 toward the rear end of the trolley 1. That is, the heavy cargo 10 can be easily pushed deep into the cart 1 by a simple operation of the cart 1 such as moving the cart 1 forward.

Next, the operator rotates the rotary handle 38A in the opposite direction to loosen the wire 36A and engage the rotating pawl 34A with the pawl of the pawl gear 33A. This operation allows the adjacent rollers 12A, 12B to rotate only in opposite directions. As a result, the cargo 10 is prevented from moving back and forth on the loading platform 2, so the operator can move the cart 1 to a desired transport position without worrying about the cargo 10 falling from the loading platform 2. can.

After moving the trolley 1 to a desired transport position, the operator swings the jack handle 6a of the jack mechanism 6 in the front-rear direction, as shown in FIG. 10(a). By this operation, the piston of the piston cylinder 6b of the jack mechanism 6 rises, and the rear end of the loading platform 2 rises higher than the front end. At this time, the operator rotates the above-mentioned rotary handle 38B to disengage the rotating claw 34B from the claw of the claw gear 33B. This operation allows roller 12B to rotate clockwise and counterclockwise. On the other hand, the roller 12A is only allowed to rotate counterclockwise by the gear mechanism 31A. Therefore, since the gear mechanism 31A prevents the luggage 10 from moving toward the rear end, the luggage 10 is only allowed to move toward the front end of the trolley 1 by the rollers 12A and 12B. Since the upper surface of the loading platform 2 is tilted downward from the rear end toward the leading end by the jack mechanism 6, the cargo 10 is easily moved onto the loading platform by the rotation of the rollers 12A and 12B, as shown in FIG. 10(b). It moves from to the inclined surface 5c of the slope member 5.

Next, the worker moves the trolley 1 backward. By this operation, the luggage 10 slides down on the slope 5c of the slope member 5 due to its own weight. As a result, the cargo 10 can be placed at a desired transport position, as shown in FIG. Finally, the operator rotates the jack handle 6a around its axis to lower the piston of the piston cylinder 6b, thereby returning the loading platform 2 to its initial position where the top surface is horizontal.

After that, the operator returns the load pushing arms 25A, 25B to the arm standby position. Further, the operator preferably inserts arm stoppers 29A and 29B into arm support member 21A and load pushing arm 25A, and arm support member 21B and load pushing arm 25B, respectively. This prevents unexpected rotation of the load pushing arms 25A, 25B, improving worker safety.

FIG. 12 is a side view schematically showing a luggage transportation system according to another embodiment. This embodiment differs from the embodiment described above only in the configurations of the cargo stopper 11 and the loading member 60. The configuration of this embodiment, which is not particularly described, is the same as the configuration of the embodiment described above, and therefore, the redundant explanation will be omitted.

The baggage stopper 11 shown in FIG. 12 is not fixed to the floor FL but comes into contact with a stationary member such as a wall of the storage facility, thereby preventing movement of the baggage stopper 11 in the horizontal direction. Specifically, the luggage stopper 11 has a leg portion 11a that is pressed against a stationary member. The leg portion 11a is provided on a surface opposite to the inclined surface with which the front surface of the luggage 10 comes into contact, and extends parallel to the floor surface FL.

The loading member 60 shown in FIG. 12 has a substantially trapezoidal cross section in the vertical direction, and its back surface is fixed to a stationary member such as a wall of a storage facility. The top of the surface opposite the back is rounded. With such a configuration, even if the worker collides with the loading member 60, it is possible to prevent the worker from sustaining an injury.

The embodiments described above have been described to enable those skilled in the art to carry out the invention. Various modifications of the above embodiments can be naturally made by those skilled in the art, and the technical idea of the present invention can be applied to other embodiments. Therefore, the invention is not limited to the described embodiments, but is to be construed in the broadest scope according to the spirit defined by the claims.

1 Dolly 2 Load platform 5 Slope member 6 Jack mechanism 7 Handle 8 Wheel 9 Weight 10 Load 11 Load stopper 12A, 12B Roller 16A, 16B Pillar 18 Upper bar 19 Lower bar 21A, 21B Arm support member 24 Load pushing arm mechanism 25A, 25B Load Pushing arm 26 Load pushing roller 27A, 27B Fixed pin 28A, 28B Arm rotating shaft 29A, 29B Arm stopper 30 Roller rotation limiter 31A, 31B Gear mechanism 33A, 33B Gear with claw 34A, 34B Rotating claw 36A, 36B Wire 37A , 37B Spring 38A, 38B Rotary handle

Claims (5)

A trolley and
a luggage stopper that comes into contact with the front of the luggage placed at a predetermined position on the floor;
a loading member fixed to the stationary member;
The said trolley is
The loading platform and
a slope member attached to the front end of the loading platform;
a handle attached to the loading platform;
a load pushing arm mechanism having a load pushing arm rotatably supported by the handle, and a load pushing roller rotatably supported at a front end of the load pushing arm;
a jack mechanism for pushing the rear end of the loading platform higher than the front end;
The load pushing arm is rotatable upward from an arm standby position where the load pushing arm extends in a horizontal direction;
The load pushing roller projects further forward than the tip of the slope member when the load pushing arm is in the arm standby position so that the load pushing roller contacts the load before the slope member does. , load carrying system. The slope member is
a front end proximate to or in contact with the floor surface;
a rear end connected to the upper surface of the front end of the loading platform;
The luggage carrying system according to claim 1, further comprising: an inclined surface that is inclined at a predetermined angle from the front end to the rear end. 3. The load pushing roller has a one-way clutch that limits the rotational direction of the load pushing roller to one direction in which the load is rotated upward about the load stopper as a fulcrum. Luggage transportation system. The loading platform is
two lateral frames;
a front frame connecting the front ends of each side frame;
a rear frame connecting the rear ends of each side frame;
a plurality of rollers disposed between the front frame and the rear frame;
The load carrying system according to any one of claims 1 to 3, further comprising a gear mechanism that limits the rotation direction of the plurality of rollers. The luggage stopper has an inclined surface inclined at a predetermined inclination angle,
The load carrying system according to any one of claims 1 to 4, wherein the inclined surface contacts the front surface of the load placed on the floor surface.

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