JPS6332539Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a transport trolley used for transporting box-shaped objects that are relatively heavy and require extreme care in handling, such as equipment storage boxes. .

Conventionally, such objects have wheels attached to their lower parts to make them easier to move. However, such wheels are necessary only during transportation, and are not only unnecessary once installed in a fixed position, but also cause instability. For this reason, some devices are equipped with supporting legs that can be raised and lowered separately from the wheels, and after installation, the supporting legs are lowered to support the object while the wheels are left floating. However, when using such a device, if the diameter of the wheels is increased, and if the wheels are attached to the bottom of the object, it becomes necessary to increase the distance between the object and the floor, and the supporting legs become longer, resulting in instability. If a large diameter wheel is installed on the side of an object, it will get in the way and look bad. For this reason, it is necessary to make the wheels attached to the object as small as possible so that they are not noticeable, but if the wheels are made small in this way, the wheels will not rotate smoothly during transportation, making it difficult to transport the object.

In addition, the gate-shaped girder has multiple support legs that span both sides of the trackbed, similar to a railway track-laying vehicle, and a large-diameter wheel is attached to the lower end of each support leg so that the direction can be changed. The hydraulic cylinders for lifting and lowering are arranged in a line in the center, and the lower end of the piston rod that protrudes from the lower end of each cylinder is provided with a hanging metal fitting on the rail.

This known cargo handling vehicle is a box-shaped vehicle that must be handled with extreme care, as it is intended to suspend and transport a so-called track consisting of rails and sleepers, and to lay it on the roadbed. It is not suitable for transporting objects.

In addition, an upper frame that is rotated by a hydraulic motor is provided on a lower frame that has four wheels, consisting of left and right front wheels with a steering mechanism and left and right rear wheels with a running mechanism. Each has a transport trolley equipped with a floating jack.

This known transport vehicle is capable of contracting the floating jacks to bring the wheels into contact with the ground, and extending the jacks so that the lower end of the jacks can be brought into contact with the ground.The lower frame can be rotated on the spot with the wheels floating. It is something that can be done.

However, the above-mentioned transport cart requires work to lift and load the object to be transported onto its upper frame, and also to unload the object from the upper frame, so a shock is applied when loading and unloading the object. It is unsuitable for transporting box-like objects that require extreme care.

This idea differs from the conventional transportation means mentioned above, in that the object to be transported is attached to a trolley and transported safely without moving the object, and even when the trolley is removed from the object, it does not cause vibrations to the object. It is an object of the present invention to provide a transportation trolley that can be removed without being damaged.

That is, in this invention, jacks for raising and lowering the support beam are removably attached to both ends of a support beam that is inserted into the bottom of a box-shaped object supported at a certain height from the floor by support legs, and The center part of the wheel support frame is removably fixed to the upper side near both ends of the support beam, and the support beam is attached to the wheel mounting frame fixed to the lower end of the pivot shaft that is rotatably attached to both ends of each wheel support frame. A floating wheel is rotatably mounted, a square shaft is integrally provided at the upper end of each of the pivot shafts, and a locking lever is provided which has a square hole at one end that is removably attached to the square shaft and non-rotatably fitted. The lower end is provided with a protruding shaft that removably engages with an engagement hole provided in the wheel support frame, so that the wheel can be fixed in any direction together with the wheel mounting frame and the wheel support frame.

Since this device has the above-mentioned configuration, in order to transport a box-shaped object placed on the floor using multiple support legs, two sets of carts of this device are prepared and the jack at one end of the support beam of each cart is used. Remove the wheel mounting frame, etc. that has the wheels, and insert the end, which is only a support beam, into the bottom of the object so that it protrudes to the other side of the object.

In this way, the wheel mounting frame with the jacks and wheels attached is fixed to the ends of the two sets of support beams protruding toward the other side of the object, and then the jacks at both ends of each support beam are operated to raise the support beams. Since the object is lifted by the support beam, the support legs that have been supporting the object can be retracted.

Next, operate the jack to lower the support beam,
The object descends with the support beam and the wheels touch the ground.
In this state, if the jack is further operated to raise the lower end from the floor, only the wheels will be in contact with the floor, making it possible to transport objects.

Furthermore, when the wheel is floating, the object can be moved in any direction by removing the rotation lever and changing the direction of the wheel.

Embodiments of this invention will be described below based on the accompanying drawings.

In the figure, 1 is the object to be transported, such as an airtight box for storing equipment that isolates equipment that generates harmful gas or dust, such as radioactivity-related equipment in nuclear power generation facilities, from the outside. It is a box-shaped item that requires extreme care.

Reference numeral 2 denotes a support beam, which is extremely durable and made of a rigid body such as steel.

A is a jack provided at both ends of the support beam 2 mentioned above. In the illustrated example, this jack is a screw jack, in which a screw 4 is screwed into a threaded tube 3 fixed to both ends of the beam 2, and a support base 5 is rotatably attached to the lower end of the screw 4. A square shaft 6 for engaging the moving handle is formed.

Reference numeral 7 denotes a wheel support frame fixed above the part of the beam 2 that is slightly inward from the jack attachment part at both ends.Although it is not clear in the figure, it is fixed to the beam 2 with bolts, and when the bolts are removed, the support frame 7 is attached to the beam 2. It is designed so that it can be easily removed.

Reference numeral 8 denotes a vertical bearing integrally provided at both ends of the support frame 7, a vertical pivot shaft 9 is rotatably attached to the bearing 8, and a fork-shaped wheel with a wheel 10 attached to the lower end of this shaft 9. Although the mounting frame 11 is fixed, the outer periphery of this wheel 10 slightly protrudes from the lower edge of the support beam 2.

Reference numeral 12 denotes a square shaft formed at the upper end of each shaft 9, and the square shaft 12 is removably engaged with a square hole at one end of the detent lever 13. A protruding shaft 14 is fixed to the lower part of the other end of each detent lever 13 as shown in FIG. The lever 13 is in a state perpendicular to the support beam 2 as shown in FIG.
from the support frame 7 and the square shaft 12, and remove the square shaft 12.
After turning 90 degrees, when the lever 13 is engaged with the engagement hole of the support frame 7 and the square shaft 12, the wheel 10 becomes parallel to the support beam 2.

In addition, the object 1 in the illustrated example has a plurality of threaded cylinders 15 fixed to its bottom, the male screws of the support legs 16 are screwed into the threaded cylinders 15, and the legs 16 are rotated to connect the bottom of the object 1 and the floor surface 17. The spacing between them can be adjusted. Furthermore, a plurality of pieces 18 are provided on the floor surface 17.
A piece 19 is provided at the bottom of the object 1 in contact with the piece 18.Both pieces 18 and 19 are provided with bolt holes, and the bolts and nuts inserted into the holes are used to secure the pieces 18 and 18. 19 can be fixed.

This invention has the above configuration, and the object 1 is placed on the floor 1.
When the object 1 is installed on the floor, the height is adjusted using the support legs 16, and then both pieces 18 and 19 are fixed with bolts and nuts inserted into the corresponding holes in the matching pieces 18 and 19, so that the object 1 is placed on the floor. It is fixed on the surface 17.

Now, if it becomes necessary to move the object 1, first confirm that each support leg 16 is in a state where it can reliably support the object 1 on the floor surface 17, and then move each piece 18,
Remove the bolt and nut that secures 19.

Next, two sets of carts of this invention are prepared, and the support beams 2 of each are inserted under the object 1. At this time, if the legs 16 are located near the outside of the bottom of the object 1 as in the illustrated example, the beam 2 must be placed inside the legs 16. At this time, the jack A at one end of the beam 2, the wheel support frame 7, etc. are removed from the beam 2 together with the wheel 10, and the beam 2 is inserted between the bottom of the object 1 and the floor 17, and then the beam protrudes toward the other side of the object 1. Attach jack A and support frame 7 to the end of 2.

After each support beam 2 is placed under the object 1 in this way, when the support beams 2 are raised by operating the jacks A at both ends, the support beams 2 touch the bottom of the object 1 and push it up, lifting the object 1 slightly. . As a result, each leg 16 rises above the floor surface 17, so rotate each leg 16 to its most retracted position, and then,
When each jack A is operated to lower the support beam 2, the object 1 descends together with the support beam 2, and each wheel 10 comes into contact with the floor surface 17. In this state, when the jack A is further operated to raise the support stand 5 at the lower end, the support stand 5 also separates from the floor surface 17 and only the wheels 10 are in contact with the floor surface 17, so the object 1 is moved to the trolley of this invention. The vehicle is now ready for transportation.

However, if there are protrusions 18 and 19 as in the illustrated example, even if an attempt is made to move the object 1 with the wheels 10 in the illustrated direction, the protrusions 18 and 19 will get in the way and the object 1 cannot be moved. In this way, if the wheels 10 are floating as shown in Figures 3 and 4, remove the locking lever 13 and rotate each wheel 10 by 90 degrees so that the wheels 10 are on the floor. 17, it is preferable to move the object 1 laterally, that is, in the left-right direction in FIGS. 2 and 4.

This idea is based on a support frame that has a support beam that is inserted into the bottom of a box-shaped object that is supported at a slight height from the floor by support legs as described above, and has a wheel mounting frame that can be freely rotated and mounted on both ends of the support beam. Since the support beam is detachably installed, the support beam can be inserted between the object and the floor while the object is supported by the support legs, so the support beam can be inserted between the object and the floor without moving the box-shaped object at all. Can be installed at the bottom.

Also, after inserting a support beam at the bottom of the object,
By operating the jack, you can gently lift the object along with the support beams, retract the support legs supporting the object, and change the direction of the wheels, making these operations extremely easy and safe.

In addition, after the object is completely separated from the floor and each support leg is retracted, raising the jack and gently lowering the support beam will cause the wheels attached to the support beam that supported the object to gently touch the ground. The work of transferring the object to the conveyance state is extremely easy, and hardly any shock is applied to the object.

Furthermore, a square shaft is integrally provided at the upper end of the rotation shaft that is integral with the wheel mounting frame, and the other end of the detent lever, which has a square hole at one end that is fitted into the square shaft in a manner that is removable and non-rotatable, is attached to the wheel mounting frame. By providing a protruding shaft that removably engages with the engagement hole provided in the support frame, the wheel can be fixed in any direction along with the wheel mounting frame and the wheel support frame, so the wheel mounting frame can be moved as needed. It has the advantage of being easy to fix and rotate.

[Brief explanation of the drawing]

Fig. 1 is a partially cut-away front view showing the installed state of the cart of this invention, Fig. 2 is a partially cut-away side view of the same as above, Fig. 3 is an enlarged partially longitudinal front view of the cart of this invention, and Fig. 4. 5 is an enlarged side view of the same as the above, and FIG. 5 is an enlarged partially cutaway plan view of the same. 1...Object, 2...Support beam, 7...Wheel support frame, 9...Swivel axis, 10...Wheel, 11...Wheel mounting frame, 12...Square shaft, 13...Detent lever,
14... Protruding axis, A... Jyatsuki.

Claims (1)

[Scope of utility model registration request] Jacks for raising and lowering this support beam are removably attached to both ends of a support beam that is inserted into the bottom of a box-shaped object supported at a slight height from the floor by support legs, and also near both ends of the support beam. The center part of the wheel support frame is removably fixed to the upper side of the
A wheel for floating the support beam is rotatably attached to a wheel mounting frame fixed to the lower end of a rotating shaft that is rotatably attached to both ends of each wheel support frame, and a square shaft is attached to the upper end of each of the rotating shafts. is integrally provided, and has a square hole at one end that is detachably and non-rotatably fitted to this square shaft.The other end of the detent lever has a protruding shaft that detachably engages with an engagement hole provided in the wheel support frame at the lower part of the other end. A transportation trolley is provided with a wheel mounting frame and a wheel support frame so that the wheels can be fixed in any direction.