JP6234831B2 - Carriage cart with lifting roller - Google Patents

Description

  The present invention relates to a structure of a transport cart provided with a rotating body at a platform portion on which a load is placed.

  2. Description of the Related Art There are transport carts that carry a load on a cargo bed portion with a rotating body attached to the cargo bed portion. This has an advantage that the load can be moved with a small force by using the rotation of the rotating body attached to the load bed portion when the load is loaded on the load bed or when the load is lowered from the load bed. However, there is a concern that the luggage may move on the rotating body during the movement of the transportation carriage carrying the luggage to the transportation destination, causing the cargo to collapse or fall from the loading platform.

In view of this, there has been proposed a transportation cart having a rotating body having a function of preventing the load on the loading platform from collapsing or dropping even while the transportation cart is moving (see Patent Document 1).

  As shown in FIG. 6 (a), the transport cart described in Patent Document 1 has a head of a rotating body 102 on which a load 101 is placed protruding from a hole 104 formed in a braking member 103 that functions as a load platform. When the carriage is moved, an operation mechanism (not shown) is operated to fix the braking member 103 in a state of being ridden on the rotating body 102 as shown in FIG. The structure is such that the contact between the load 101 and the rotating body 102 is released.

  As a result, it is possible to reliably prevent the load 101 from moving on the rotating body 102 during the movement of the transport carriage and causing the load to collapse or fall.

JP 7-64404

However, since the transport cart of Patent Document 1 has a structure in which the braking member 103 rides on the rotating body 102, the rotating body 102 may be damaged by the braking member 103 when riding. Further, since the rotating body 102 and the braking member 103 are in contact with each other, the load of the luggage 101 is applied to a rotating shaft and a bearing portion (not shown) of the rotating body 102 while the luggage 101 is placed on the braking member 103. There is a problem that the portion is consumed and easily damaged.

  The present invention can solve the above-mentioned problems, and can transport a load that can be reliably prevented from collapsing and falling when the load is loaded on the loading platform, and the consumption of the rotating body can be suppressed as much as possible. A trolley is provided.

The invention according to claim 1 includes a loading platform having a hole, a plurality of rotating bodies that move up and down in the hole, and a gantry to which the plurality of rotating bodies are attached. When lowering the rack, the platform is raised, and the rotating body is projected from the hole onto the loading platform to support the load with the rotating body. When carrying the load, the platform is lowered to reduce the load and the rotating body. The platform is composed of a storage part that stores the rotating body and support parts that extend from both ends of the storage part, and the wheel unit is fixed under the load base. The stand is attached so as to be movable up and down by interposing a spring between the reinforcing stand and the support portion.

According to the first aspect of the present invention, when loading or unloading a load from the loading platform, the rotating body is projected on the loading platform and supported by the rotating body, thereby rotating the rotating body. It is possible to move the load by using the structure, and when the load is transported, the rotating body is stored under the loading platform so that the contact between the load and the rotating body is released and the load is supported by the loading platform. The frictional force between the load and the loading platform can prevent the collapse of the load and the fall of the load, and can reliably prevent the load of the load from being applied to the rotating body, thereby suppressing the breakage of the rotating body as much as possible . Furthermore, it is possible to prevent the reinforcement base from being damaged by preventing the load applied to the base directly from being applied to the reinforcement base by the elastic force of the spring interposed between the support section of the base and the reinforcement base. By the means for preventing breakage of the rotating body and the reinforcing table, it is possible to reduce the maintenance work of the transport cart with the lifting roller.

It is a top view which shows the trolley | bogie of this invention. It is a side view which shows the trolley | bogie of this invention. It is an enlarged view of the mount attachment part of the trolley | bogie of this invention. It is a side view which shows the raising / lowering apparatus of this invention. It is a side view which shows the utilization form of the trolley | bogie of this invention. It is a principal part enlarged view which shows the load collapse prevention structure by the conventional conveyance trolley | bogie.

  The structure of the transportation carriage of the present invention will be described with reference to FIGS. FIG. 1 is a top view of a transport carriage according to the present invention. As shown in FIG. 1, a transport cart 1 according to the present invention includes a loading platform 3 on which loads 2 are loaded, two rows of long holes 4 formed along the longitudinal direction of the loading platform 3 (lateral direction in FIG. 1), and two rows. A pair of mounts 5 disposed in the long holes 4, a plurality of rotating bodies 6 rotatably accommodated in a row in the mounts 5, and a short direction of the load platform 3 on the lower surface of the load platform 3 (vertical direction in FIG. 1) And a pair of reinforcing bases 7 and 8 fixed along.

  As shown in FIG. 2, the gantry 5 includes a support portion (both end support portions) 9 that protrudes at both ends in the longitudinal direction and a storage portion 10 that stores the rotating body 6, and from the upper surface opening 11 of the storage portion 10, The head of the rotating body 6 protrudes upward.

The reinforcing bases 7 and 8 are for fixing the unit 12a of the wheel 12 for moving the transport carriage 1, and in the middle of the longitudinal direction (vertical direction in FIG. 1), as shown in FIG. 13 is formed. Both end support portions 9 of the gantry 5 have entered the cutout portion 13, and the both end support portions 9 are attached between the reinforcement bases 7 and 8 via springs 14 as shown in FIG. , 8 are attached to the reinforcement bases 7 and 8 so as to be movable up and down by mounting nuts (double nuts or the like) 16 fixed so as not to loosen at a certain distance from the lower surface.

  Reference numeral 17 shown in FIG. 1 denotes short holes formed on both sides of one end in the longitudinal direction of the loading platform 3, and an auxiliary rotating body 18 protrudes from the loading platform 3 in the short hole 17 so that one reinforcing table 8 is provided. Is attached.

  In FIGS. 1 and 2, 19 is a handle for a person to hold when the transport cart 1 is moved manually, 20 is a stopper for preventing the load 2 placed on the loading platform 3 from hitting the handle 19, and 21 is a loading platform. The side stopper 22 prevents the load 2 placed on the vehicle 3 from falling from the lateral direction of the loading platform 3, and 22 is attached to the side surface of the loading platform 3 for the purpose of mitigating the impact when the transportation cart 1 collides with a wall or the like. Buffer part.

Next, the lifting device 23 that moves the gantry 5 up and down will be described with reference to FIG. The lifting device 23 comes into contact with the lower surface of the gantry 5 and lifts it. For example, it is roughly constituted by an elevator 24 formed in a square plate shape, a pneumatic cylinder 25 that is connected to the four corners of the elevator 24 and moves the elevator 24 up and down and an operating device (not shown) that operates the elevator 23. .

  The pneumatic cylinder 25 is fixed to a support seat 27 by legs 26, and the support seat 27 is fixed to the floor surface by anchor bolts 28. The power for expanding and contracting the cylinder is not limited to air pressure, and hydraulic pressure may be used.

Next, a method for carrying a load by loading the load on the transport carriage 1 of the present invention will be described. First, when the load 2 is placed on the loading platform 3 of the transportation carriage 1, as shown in FIG. 5A, the transportation carriage 1 is stopped on the lifting device 23 fixed adjacent to the roller conveyor.

  In this state, an operating device (not shown) of the lifting device 23 is operated to extend the pneumatic cylinder 25, the lifting platform 24 attached to the upper end of the pneumatic cylinder 25 is brought into contact with the lower surface of the platform 5, and the platform 5 is lifted. As a result, the gantry 5 ascends in the notch 13 (see FIG. 3) provided with the support portions 9 on both ends of the reinforcing bases 7 and 8 and enters the elongated hole 4 shown in FIG. The head of the rotating body 6 is projected on the loading platform 3 as shown in FIG.

At this time, when the mount 5 is lifted, the mounting bolt 15 is also lifted together, and the mounting nut 16 fixed to the mounting bolt 15 comes into contact with the lower surfaces of the reinforcing bases 7 and 8. When the mounting nut 16 comes into contact with the reinforcing bases 7 and 8, the gantry 5 does not rise further relative to the transport carriage 1, and the uppermost part of the rotating body 6 and the uppermost part of the auxiliary rotating body 18 are prevented. And the same height.

  In this state, the load 2 is moved from the roller conveyor onto the loading platform 3 of the carriage 1, but the loading 2 is first placed on the auxiliary rotating body 18, and the rotation of the auxiliary rotating body 18 is used on the loading platform 3. Next, it protrudes from the upper surface of the loading platform 3 and rests on the plurality of rotating bodies 6 adjusted to the same height position as the auxiliary rotating body 18, and uses the rotation of both the rotating body 6 and the auxiliary rotating body 18. Continue on 3 above. The stopper 2 reliably prevents the load 2 from colliding with the handle 19 on the loading platform 3.

  Thus, when the load 2 is placed on the loading platform 3, the rotation of the rotating body 6 and the auxiliary rotating body 18 with the head protruding on the loading platform 3 can be used. The frictional resistance between the rotating bodies 18 can be reduced, and the load 2 can be placed on the load platform 3 of the transport carriage 1 by applying a small force.

When carrying the load 2 on the loading platform 3, as shown in FIG. 5B, when the pneumatic cylinder 25 of the lifting device 23 is contracted and the contact state between the lifting platform 24 and the loading platform 5 is released, the loading platform 5 is Descent due to its own weight.

When the gantry 5 is lowered, the rotating body 6 attached to the gantry 5 descends in the long hole 4 (see FIG. 1) of the gantry 3 to release the contact state with the luggage 2 (the state in which the luggage 2 is lifted). To do. When the contact state between the rotating body 6 and the luggage 2 is released, the cargo bed 3 comes into contact with the lower surface of the luggage 2 and the luggage 2 is supported by the cargo bed 3.

  As a result, since a frictional force is generated between the lower surface of the luggage 2 and the loading platform 3, the luggage 2 does not move on the loading platform 3 even if vibration occurs during the conveyance of the luggage, tilting of the loading platform 3, or the like. The load 2 can be reliably prevented from collapsing or falling from the loading platform 3.

Since the side stopper 21 shown in FIGS. 1 and 2 is mounted on the loading platform 3, the luggage 2 is loaded on the loading platform 3 or when the loading is carried on the loading platform 3. 3 can also be prevented from falling from the short direction.

  When unloading the cargo 2 from the loading platform 3 at the transport destination, the transportation carriage 1 is stopped on the lifting device 23 fixed adjacent to the roller conveyor, and the operating device (not shown) of the lifting device 23 is operated to operate the pneumatic cylinder 25. Elongate.

  Thereby, the mount 5 is lifted by the lift 24 of the lift device 23, and the rotating body 6 is protruded from the long hole 4 of the loading platform 3. Then, the load 2 is lifted upward by the rotating body 6 and supported by the rotating body 6. Setting the height position of the uppermost portion of the rotating body 6 at this time to the same height as the uppermost portion of the auxiliary rotating body 18 is the same as when the load 2 is placed on the loading platform 3.

  As a result, since the load 2 can be moved again by using the rotation of the rotating body 6, the load is pushed from the top of the loading platform 3 toward the roller conveyor, so that the loading platform is moved via the auxiliary rotating body 18. It can be easily moved from 3 to the roller conveyor with little effort.

  When the luggage 2 is completely moved onto the roller conveyor, the pneumatic cylinder 25 is contracted to lower the gantry 5 so that the carriage 1 can be freely moved, and a series of operations is completed.

  As described above, the transport cart 1 with the lifting roller of the present invention raises the gantry 5 by the lifting device 23 and attaches it to the gantry 5 when loading the cargo on the cargo bed 3 or unloading the cargo 2 from the cargo bed 3. By projecting the rotating body 6 on the loading platform 3, it is possible to move the luggage 2 with less effort using the rotation of the rotating body 6, and when carrying the luggage 2 on the loading platform 3, The platform 5 is lowered by the lifting device 23, and the rotating body 6 attached to the platform 5 is stored under the loading platform 3, thereby releasing the contact state between the load 2 and the rotating body 6 and supporting the loading 2 on the loading platform 3. Thus, it is possible to reliably prevent the luggage 2 from collapsing on the loading platform 3 or falling from the loading platform 3 due to vibration during transportation, tilting of the loading platform 3, etc. due to the frictional force between the luggage 2 and the loading platform 3. Can do.

  In addition, when carrying the load 2 on the loading platform 3, the load of the load 2 is not applied to the rotating body 6, so that the rotating shaft and the bearing portion of the rotating body 6 are prevented from being damaged due to aged load as much as possible. Can do. This is very significant in that the labor required for the maintenance of the transport carriage 1 can be reduced.

  In addition, since the spring 14 between the gantry 5 and the reinforcement bases 7 and 8 is located between the gantry 5 and the reinforcement bases 7 and 8, the load applied to the rotating body 6 of the gantry 5 is moved when the transport carriage 1 moves. Therefore, it is possible to prevent the reinforcement bases 7 and 8 from being directly applied by the vibration, and it is possible to prevent the reinforcement bases 7 and 8 from being damaged.

  Further, it is confirmed that the elevating device 23 is separated from the transport carriage 1 and has the effect of reducing the weight of the transport carriage 1 and the cost of the transport carriage 1 itself.

Finally, although not described in the above embodiment, the top surface of the loading platform 3 is further processed to increase the frictional resistance with the load 2 or a rubber plate or the like, so that the load collapses or falls due to the movement of the load 2. You may comprise so that it may prevent.

  It can be used for facilities that load and transport heavy loads, such as factory production lines and warehouses that collect and distribute luggage.

DESCRIPTION OF SYMBOLS 1 ... Carriage for transport, 2 ... Luggage, 3 ... Loading platform, 4 ... Long hole, 5 ... Mounting frame 6 ... Rotating body, 7, 8 ... Reinforcement stand, 9. ··· Both ends support portion, 10 ··· Storage portion 11 ··· Opening portion on upper surface, 12 · · · wheel, 12a · · · Wheel unit 13 · · · notch portion, 14 · · · spring, 15 ··· Mounting bolt 16: Mounting nut, 17: Short hole, 18 ... Auxiliary rotating body, 19 ... Handle 20 ... Stopper, 21 ... Side stopper, 22 ... Buffer 23 / .. Lifting device, 24 ... Lifting table, 25 ... Pneumatic cylinder 26 ... Leg, 27 ... Support seat 101 ... Luggage, 102 ... Rotating body, 103 ... Braking member 104 hole

Claims (1)

A loading platform having a hole, a plurality of rotating bodies that move up and down in the hole, and a platform to which the plurality of rotating bodies are attached, and when loading or unloading luggage from the loading platform, the platform is raised Then, by supporting the load with the rotating body by projecting the rotating body from the hole onto the loading platform, and transporting the load, the platform is lowered, the contact between the load and the rotating body is released, and the luggage is loaded with the loading platform. The gantry includes a storage unit that stores the rotating body, and support units that extend from both ends of the storage unit, and a reinforcing table that fixes the wheel unit under the cargo bed, and the support unit. A carriage with a lifting roller, wherein the frame is attached so as to be vertically movable by interposing a spring between the two.

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