JPS58174052A - Underlying board for outrigger jack of truck crane - Google Patents

Abstract

PURPOSE:To achieve a safe load hoisting work by mounting a semi-cylindrical carrier on the top of a plate member having a plurality of projections formed on the ground surface and a semi-circular arc shaped anchor plate detachably on the carrier so as to overlap at both ends thereof. CONSTITUTION:Projections 3 are formed at four corners of the ground surface of a plate member 2 on a underlying board 1 while a carrier 4 is mounted on the top of the plate member 2. The carrier 4 is made semi-cylindrical with a notch 5 formed on one side thereof and the top plate section 6 of the carrier 4 is made semi-circular arc cut on the side of the notch 5. Steps 7 and 7 are formed at both ends of a top plate section 4 and a retaining hole 8 is formed on both sides of the step 7. A step 10 is formed at both ends of a semi-circular arc shaped anchor plate 9 to be engaged with said step 7 and a retaining hole 11 is formed on both sides of the step 10. Then, a pin 12 is inserted into both the retaining holes 8 and 11 being matched with each other to mount the anchor plate 9 on the carrier 4 and a leg of an outrigger jack is inserted into a central hole defined by the top plate section 6 and the anchor plate 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bed plate for an outrigger jack of a truck crane, which can be easily installed and removed, and which can prevent the outrigger jack from sinking in, sliding, tilting, etc. The purpose is to provide a platform.

BACKGROUND ART Conventionally, an outrigger jack for lifting a load by a truck crane has a disc (eg, a disc with a diameter of 1.0 mm and a thickness of qm in the case of a Kuton truck crane) attached to the ground-contacting portion of its tip.

However, with a disc simply attached to the ground contact part as described above, it often causes H failures such as slipping and tilting on sloped or frozen ground, and also on snowy areas, wetlands, soft areas, etc. When it rains, the ground contact part of the outrigger jack may sink in when the load is applied while lifting the load.
There is a risk that the truck will tilt and the suspended load will fall. In addition, the work site for lifting loads is not always flat and has many uneven surfaces, making it unstable and dangerous.

Conventionally, in order to prevent the above-mentioned accidents, loading work has been carried out after laying a board or mat on the ground contact area of the outrigger jack, but this is not always sufficient and is not always necessary at the work site. It is difficult to find a suitable board or board.

The present invention has the structure described in the claims, so that the truck crane can be easily attached and detached when the truck crane is used for hoisting a load, and it does not cause slipping or sinking on slopes, wetlands, etc. We were able to obtain a bed plate for the outrigger jack of a truck crane that enables safe load lifting work.

That is, the invention set forth in claim 1 (hereinafter referred to as the first invention) is a semi-cylindrical plate having a partially cut out side surface on the upper surface of a plate material having a plurality of protrusions formed on the ground surface. A shaped pedestal is attached, and the top plate part of the pedestal is also formed in a semicircular arc shape with a part of the cutout side of the pedestal removed, and both ends of the arc-shaped top plate part are attached. This floor plate for an outrigger jack of a truck crane is characterized in that a semi-circular arc-shaped stop plate is detachably attached to the top plate, which is partially overlapped with the top plate to form an annular top plate.

The invention recited in claim 2 (hereinafter referred to as the λ-th invention) is a semi-cylindrical structure with a partially cut out side surface on the top surface of a plate material on which a plurality of protrusions are formed on the ground surface. A shaped pedestal is attached, and the top plate part of the pedestal is also formed in a semicircular arc shape with a part of the cutout side of the pedestal removed, and one end of the arc-shaped top plate part is attached. , one end of a semicircular arc-shaped stop plate corresponding to the missing portion of the top plate portion is rotatably supported, and the other end of the stop plate overlaps and engages with the other end of the top plate portion. This is a bottom plate for an outrigger jack of a truck crane, characterized in that it is stopped to form an annular top plate part.

FIG. 7 shows an embodiment of the first invention,
Next, the first invention will be explained with reference to the drawings. The bottom plate 1 according to the present invention has protrusions 3 formed at the four corners of the ground plane (lower side in FIG. 1) of the plate material 2.

A pedestal 4 is attached to two sides of the plate 2, and the pedestal 4 has a semi-cylindrical shape with a notch 5 formed on one side of the cylindrical shape. The top plate portion 6 is formed in a semicircular arc shape with the cutout portion 5 side cut off.

Stepped portions 7, 7 are formed at both ends of the semicircular arc shape of the top plate portion 6, and locking holes 8°8 are formed in the top plate portion 6 on both sides of the stepped portions 7, 70, respectively. It is formed.

On the other hand, at both ends of the semicircular arc-shaped stopper plate 9 which together with the semicircular arc-shaped top plate part 6 constitute an annular top plate part, a stopper plate 9 is formed at the tip part of the semicircular arc-shaped top plate part 6. Step portions 7, 7
A stepped portion 10.10 is formed which engages with the
When the stop plate 9 is engaged, the lock hole 8 of the top plate portion 6
Locking holes 11 and 11 are formed which correspond to the angle of .degree.8, respectively. Further, the center hole of the annular top plate portion formed by the top plate portion 6 and the stop plate 9 allows the legs of an outrigger jack to be inserted thereinto. In FIG. 1, numeral 12 is a locking bottle, and 13 is a handle.

The first invention is constructed as described above, and is installed on an outrigger leg of a truck crane. In the section, handle 1 of bottom plate 1
3, insert the top plate part 60 from the semicircular arc-shaped open part side.

In this case, a disk (not shown) at the tip of the outrigger jack can be fitted into a quadruple area of the mounting frame 4' of the pedestal 4.

Next, after engaging the step portions 10.10 formed at both ends of the semicircular arc-shaped stop plate 9 with the step portions 7, 7 formed at both ends of the top plate portion 6, The bottom plate 1 is fixed by inserting the locking pins 12 into the locking holes 11 of the plate 9 and the corresponding locking holes 8, 8 of the top plate part 6, respectively, and locking the stop plate 9 to the top plate part 6. Ak. After the bird is fixed on the jack, the aratri will ground the jack.

The stop plate 9 has stepped portions 10 that can engage with the stepped portions 7 of the top plate portion 6 at the portions overlapping both ends of the top plate portion 6.
．． 10 is formed, the locking holes 8, 8 of the top plate portion 6
It is easy to match the locking hole 11.11 of the stopper plate 9 with the locking hole 11.11 of the stopper plate 9.

The overlapping parts of the top plate part 6 and the stop plate 9 need not be the step parts 7, 7 and 10, 10 as shown in FIG. 1, but as shown in FIG. The same reference numerals as in FIG.
4, a groove 15 into which the protrusion 14 can be externally fitted is formed at the tip of the stopper plate 9, and the protrusion 14 and the groove 15 are engaged.

The stepped portion or the ridge and groove formed at the portion where the tooth-shaped top plate portion 6 and the stop plate 9 overlap may be omitted as appropriate.

Since the floor plate 1 according to the present invention has a plurality of protrusions 3 formed on its ground surface, there is almost no risk of the floor plate 1 slipping not only on flat areas and slopes but also on poor ground such as snow-covered ground or wetlands. Also, the outrigger jack becomes more stable because the bottom plate 1 can be further fixed to the ground due to the load during load lifting work.
There is no danger such as tilting of the truck crane.

However, after the load lifting work is completed, it can be easily removed from the outrigger jack by removing the locking pin 12 and the stop plate 9 from the top plate 6, and it is also easy to store, so it is not suitable for truck cranes. It has the advantage of being always portable and easy to use when lifting loads.

3 and 9 show an embodiment of the invention of λ.Next, the second invention will be explained with reference to these drawings. (Symbols indicate the same parts) A screw 17 is attached to one end of the pedestal 6 formed in a semicircular arc shape of the bottom plate 16, and one end of a semicircular stop plate 18 is pivotally supported by the screw 17. The stop plate 18 is horizontally rotatable about the screw 17, and the other end of the stop plate 18 is overlapped with the other end of the semicircular arc shape to form an annular top plate. It has become.

A locking hole 19 is formed at the other end of the bent semicircular arc-shaped stop plate 18, and a locking hole 19 is formed at the other end of the top plate portion 6 to lock into the lock hole 19 of the stop plate 18. Gold 20 is attached. Reference number 21 in FIG. 3 is a pawl formed to protrude in the direction of extension of the inner arc of the stop plate 18 on the screw 17 side.

That is, in order to attach the bottom plate 16 shown in FIG.
The bottom plate 16 is rotated and opened using the fulcrum as a fulcrum, and the bottom plate 16 is fitted onto the tip of the outrigger jack (K) from this part. In this case, the claw 21 of the semicircular arc-shaped stop plate 18 is
Since the other end of the jumper 18 is overlapped with the other end of the top plate part 6 and closed, the latch 20 is fitted into the locking hole 19 of the stop plate 18 to lock the 11th plate 18, and the bottom plate is closed. 16 is fixed to the rear trigger gun (the mold 21 is not necessarily required and can be omitted as appropriate).

In the second invention, since the stop plate 18 is pivotally supported by the top plate 6 of the pedestal 4, there is no risk of the stop plate 18 being lost, and it is easy to attach and remove it from the out IJ guar jack. There are advantages.

Although the bottom plates 1 and 16 according to the present invention are rectangular plates 2 in the illustrated example, they are not necessarily limited to this, and have a ground contact area larger than the tip of the outrigger jack. It may be circular as long as it is shaped like this, and various materials other than wood can be used as the material for the board 2. A hard rubber board is laid inside the mounting frame 4'□ of the pedestal 4. For example, the bottom plates 1 and 16 can be provided with load cushioning properties during load lifting work, and the outrigger jack and the bottom plate can be brought into close contact with each other, thereby preventing damage to the bottom plate.

As described above, the present invention is directed to an outrigger for a truck crane.
The jack can be easily attached to and removed from the ground contacting part of the tip of the jack, and can be easily removed even on poor ground such as slopes, snowy areas, wetlands, etc.l) The ground contact part of the jack does not slip or get stuck, so it is easy to lift loads. There is no inclination of the outrigger jack or the inclination of the truck during the work, and the safety of the load lifting work can be ensured.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an embodiment of the first invention, FIG. 2 is a cross-sectional view of another main part of the overlapping part of the top plate and the stop plate, and FIG. A perspective view of one embodiment, FIG. 9 is a perspective view showing an attached state. 1.16: Bottom plate, 2゛board material, 3 protrusion, 4: pedestal, 4
': Mounting frame, 5: Notch, 6: Top plate, 7.10: Step, 8, 11.19: Locking hole, 9.18° stop plate, 1
2. Locking pin, 13: Handle, 14. Tujo, 15 Groove, 1
7. Screw, 20: Latch, 21: Claw. , Agent for patent applicant Japan Heavy and Chemical Industry Co., Ltd. Osamu Ichikawa Yoshido Tatsuya Endo

Claims (2)

[Claims] (1) A semi-cylindrical pedestal with a partially cut-out side surface is attached to the 41 side of the plate material with a plurality of protrusions formed on the ground surface, and the top plate of the pedestal is also similar to the pedestal. It is formed in a semicircular arc shape with a part of the notch side cut out, and the semicircular arc shape is partially overlapped and locked at both ends of the arc-shaped top plate part to form an annular top plate. A bed plate for an outrigger jack of a truck crane, characterized in that a stop plate is detachably attached. (2) A semi-cylindrical pedestal with a partially cut-out side surface is attached to the top surface of the plate material with a plurality of protrusions formed on the ground surface, and the top plate of the pedestal is also attached to the notch of the pedestal. It is formed in a semi-circular arc shape with a part of the top plate section removed, and at one end of the arc shape toward the ζ board sound 1, there is a semi-circular arc-shaped stop plate that intersects with the missing section of the top plate section. One end of the stop plate is rotatably supported, and the other end of the stop plate overlaps and is locked to ends A1 and C of the top plate part to form an annular top plate part. This is a bottom plate for outrigger jacks for l-rank cranes.