JPS6326399Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field This invention relates to a ram device for a cargo handling vehicle.

b. Prior art The closest prior art to this idea is
There is a publication number 44364. This prior art is designed as shown in FIG. In other words, 1 is a pair of left and right lift brackets that move up and down while being guided by rollers 2 along a mast (not shown), and 4 is a pair of lift brackets (not shown) that are fixed to the front surface of the lift bracket 1 at appropriate intervals vertically. A pair of upper and lower finger bars that support the fork claws, 6 is a base plate that is attached to the finger bars 4 so as to be movable left and right with a hook upper 8 and a jaw fork 10 that are respectively protruded from the upper and lower ends; 12 is fixed to the base plate 6; A ramshaft that protrudes forward to penetrate and load a load, such as a rolled material, 14 slides on the ramshaft 12 (back and forth movement)
This is a ram foot that can be fitted into the shaft and is fixed with a fixing pin 16 at the position shown by the solid line when not in use.

Here, when the ramshaft 14 is not in use, it means that the ramshaft 12 is maintained in a state where it can be used for cargo handling operations, and when it is in use, it is in a position where the ramshaft 12 and the base plate 6 are attached and detached from the finger bar 4, that is, when the ram device is replaced. Shows the working position for Specifically, Jikoko 54-
Please refer to Publication No. 44364.

By the way, in such a ram device, since the ram shaft 14 is engaged with the ram shaft 12 which protrudes from the base plate 6 located forward from the front surface 4a of the finger bar 4, there is a problem described below.

(1) Since the ram foot 14 is located at the front, the center of gravity of the loaded object and the center of gravity of the ram device are also located at the front, which is disadvantageous in terms of allowable load and unfavorable in terms of work efficiency.

(2) When a shock is applied to the ram foot 14 during transportation, shearing stress acts intensively on the fixing pin 16, and the pin 16 is likely to break.

(3) If the rear end surface of the loaded object comes into contact with the ram foot 14, the front surface area of the ram foot 14 is small;
Loaded items are easily deformed locally.

c. Purpose of the invention This invention aims to solve the problems of the prior art.

d Structure of the device The base plate is supported by the lift bracket so that it is stored behind the front surfaces of the upper and lower finger bars, that is, on the lift bracket side, and the ram foot, which is slidably and rotatably fitted to the ramshaft, is used to move the finger bars when not in use. It is stored in a rear position that does not protrude from the front, and is held in the stored position by a stopper.

e Embodiment In FIGS. 2 to 5, the ram device of this embodiment includes a pair of left and right lift brackets 20,
A pair of upper and lower finger bars 22, a ram base plate 24 supported by a lift bracket 20,
A ram shaft 26 protruding from the front surface of the ram base plate 24, a ram foot 28 fitted to the ram shaft 26, and a ram shaft 28 fitted to the ram shaft 26.
It consists of a stopper 30 for holding.

The lift bracket 20 has a mast 34 supported on the vehicle body B by a tilt cylinder 32 so as to be tiltable forward and backward.
It is adapted to be guided up and down via a carriage roller (not shown, but the spindle 36 of the roller is shown).

A finger bar 22 is fixed to the front surface of the lift bracket 20 at an appropriate interval, and the finger bar 22 is formed with fork locking portions 22a and 22b for standard claw work.

A ram head 38 is welded to the upper end of the ram base plate 24, and the ram head 38 has a similar shape to the slide bar 40 so that it can be removably hooked onto a pipe-shaped slide bar 40 installed between the lift brackets 20. Notch 38a
is formed. A cross member 42 is installed under the slide bar 40 and is also welded to the slide bar 40 to reinforce the slide bar 40.

Bolt holes 43 are drilled on both sides of the lower end of the ram base plate 24, and are adapted to match tap holes 46 formed in ram support brackets 44 fixed to both lower ends of the lift bracket 20, respectively, so that both bolts can be inserted into the ram base plate 24. Hole 43 and tapped hole 46
A bolt 48 is inserted and screwed into the ram base plate 24 to detachably attach the lower end of the ram base plate 24 to the ram support bracket 44.

When the ram base plate 24 is attached to and supported by the lift bracket 20, the front surface of the ram base plate 24 does not protrude beyond the front surface of the finger bar 22, and is stored laterally on the lift bracket 20 side, that is, at the rear.

The ram foot 28 has a hole 28b in the base 28a, which is inserted into the ram shaft 26, and a tip 28c is formed in a bifurcated shape.

Thus, the ram foot 28 is capable of sliding and rotating on the ram shaft 26 .
A guide pipe 50 is welded to the underside of the tip 28c, and is adapted to mate with a guide receiving pipe 52 protruding from the lower finger bar 22 when the ram foot 28 is brought close to the ram base plate 24, i.e., when the ram foot is in the stowed position when not in use, and a lock pin 54 is inserted into the guide pipe 50 and guide receiving pipe 52 to hold the ram foot 28. The guide pipe 50, guide receiving pipe 52 and lock pin 54 constitute the stopper 30 for the ram foot 28. What is important here is that when the ram foot 28 is in the stowed position, the front surface of the ram foot 28 is stored so as not to protrude beyond the front surface of the finger bar 22.

With this configuration, when installing the ram base plate 24, the vehicle is advanced to a position where the ram base plate 24 is lying on the ground with the ram foot 28 lifted as shown in FIG. finger bar 22
The mast 34 is tilted forward so that it does not contact the lower end and the ram base plate 24 does not contact the upper end of the lower finger bar 22, and the hook upper 38 is hooked to the slide bar 40.

Thereafter, the mast 34 is moved from the forward tilted position to the vertical position or rearward, and the ram foot 28 is taken off.
In this state, the bolts 48 are passed through the bolt insertion holes 43 of the ram base plate 24 and screwed into the tap holes 46 to complete fixing the ram base plate 24.

After that, the ram foot 28 is moved backward on the ram shaft, rotated 90 degrees, turned sideways, and stored inside the lower finger bar 22, and the lock pin 54 is inserted into the guide pipe 50 and the guide receiving pipe 52 to hold the ram foot 28 in the storage position. let
This storage position of the ram foot 28 is the state when the ram foot is not in use.

Therefore, since the ram base plate 24 and the ram foot 28 are housed at the rear of the front surface of the finger bar 22, the center of gravity of the device is located at the rear, allowing for a large allowable load, which is advantageous for cargo handling and improves work efficiency.

In addition, since the ram foot 28 is housed, external force is not easily transmitted to it, and there is almost no impact during transportation, and the stopper, especially the lock pin, will not break.

When the loaded object moves backward and its rear end surface comes into contact with the device, the finger bars 22 bear the load over a wide area, reducing surface pressure and effectively preventing local deformation of the loaded object.

FIG. 6 shows another embodiment.

To explain only the parts that are different from the above-mentioned embodiment in the figure, a stopper plate 60 as a stopper is welded to the upper end surface of the lower finger bar 22 at a position that does not protrude, and the guide pipe is not fixed to the ram foot 28. , do not attach anything. When the ram foot 28 is not in use, the ram foot 28 is moved over the stopper plate 60 to be stored and latched. In this example, when mounting the ram base plate 24, there must be some clearance between the upper and lower finger bars 22 so that the ram base plate 24 can clear the height of the stopper plate 60.

f Effects As described above, according to the present invention, it is possible to achieve excellent cargo handling performance and excellent damage prevention properties for cargo and equipment component parts.

[Brief explanation of drawings]

Figure 1 is a side view of a conventional ram device;
Figures 5 through 5 show an example of this invention.
Figure 2 is a side view of the device, Figure 3 is a perspective view of the device, and Figure 4 is a side view of the device.
5 is an explanatory view showing a state immediately before installation, and FIG. 6 is a perspective view similar to FIG. 3 showing another example. 20... Lift bracket, 22... Finger bar, 24... Ram base plate, 26... Ramshaft, 28... Ram foot, 30, 36...
...Stotsupa.

Claims (1)

[Scope of utility model registration request] A pair of left and right lift brackets that move up and down guided by rollers along the mast, a pair of upper and lower finger bars fixed to the front surface of the lift brackets at an appropriate interval, and a slide installed between the lift brackets. a bar, a ram support bracket also fixed to the lift bracket, a base plate detachably attached to the slide bar and the ram support bracket such that the front surface is located behind the finger bar, and a base plate protruding forward from the base plate. a ramshaft, a ramshaft that is movably fitted on the ramshaft and is stored laterally behind the front surface of the finger bar when not in use, and a stopper that holds the ramshaft in the storage position when not in use. A ram device for cargo handling vehicles.