JPH0428270Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a caster stopper, and particularly relates to a caster stopper installed in a cargo handling machine attached to the rear of a freight vehicle or the like.

(Prior Art) In recent years, in order to save labor and speed up cargo handling operations during collection and delivery by freight vehicles, it has become common to attach cargo handling equipment to the rear of freight vehicles. This type of cargo handling equipment has a structure that allows the platform (which usually also serves as the rear gate plate of the vehicle body) to be raised and lowered from the landing position to the height of the vehicle body loading platform using a link mechanism, etc., and the platform is used to load and unload cargo. I am trying to execute it.

(Problem to be solved by the invention) By the way, in the case of the above-mentioned cargo handling machine, when the platform is on the ground, the tip of the platform is lowered and tilted with respect to the horizontal plane, so when placing the caster on the platform, the tip of the platform must be This creates the inconvenience of having to hold down the caster so that it does not move until it rises and becomes horizontal.

For this reason, it has been considered in the past to attach a caster stopper to the platform, but in the past, in order to attach the caster stopper to the platform, the platform had a complicated structure with cutouts, etc., and it took time and effort to manufacture the platform. There was a problem with this.

(Means for Solving the Problems) In view of the above points, the present invention is capable of reliably locking the casters on the platform of the cargo handling machine without interfering with the carrying of the casters onto the platform.
Another object of the present invention is to provide a caster stopper that does not require complicated processing on the platform side and is easy to manufacture.

In the present invention, a top plate on the front end side which is bent so as to form a concave portion is joined to the top plate on the rear end side platform, and a gentle slope A that becomes lower toward the leading edge of the top plate on the front side and the gentle slope A is formed. A stopper member having a substantially L-shaped cross section and a stopper surface B forming an acute angle with respect to the stopper member is pivotally attached to the bottom of the tip side of the inner surface of the recess at the lower end of the gentle slope, and one end of the rod is attached to the back side of the gentle slope A. A support block is pivotally supported on the rear back side of the recess, the rod is movably penetrated through the support block, and the other end of the rod is provided with a pull-out prevention member, and the stopper member is moved in the projecting direction. The above problem is solved by providing a biasing spring member around the rod.

(Function) In the caster stopper of the present invention, the front end platform top plate bent to form a recess is joined to the rear end platform top plate, and a stop member having a substantially L-shaped cross section is disposed within the recess. Therefore, the platform structure for arranging the stopper member is extremely simple. Therefore,
Even though it is equipped with a caster stopper, the number of man-hours required for manufacturing the platform can be reduced, and since there are fewer welding points, dimensional accuracy can be improved.

Further, the caster (carriage) placed on the platform is stopped by the stopper surface of the stopper member protruding from the top surface of the platform, but at this time, the stopper surface stands up nearly perpendicular to the top surface of the platform. The caster will not move backwards.

(Example) Hereinafter, an example of the caster stopper according to the present invention will be described with reference to the drawings.

1 and 2, the platform 1 of the cargo handling machine has a rectangular recess 2 parallel to its leading edge.
The top plate material 1A of the front end platform is bent to form the top board material 1A of the rear end platform.
It has a structure in which reinforcing ribs 1C are welded to B, and reinforcing ribs 1C are integrally welded across both upper plate materials 1A and 1B.

A cross section approximately L along the long side 2A on the tip side of the recess 2
A letter-shaped stopper member 3 is pivotally mounted on the bottom 5 of the inner surface of the recess 2 via a hinge 4. Here, the stopper member 3 having a substantially L-shaped cross section has a gentle slope A that becomes lower toward the leading edge of the platform and a stopper surface B that forms an acute angle with respect to the gentle slope A. It is pivoted to the platform 1 side. A rod mounting bracket 6 is fixed to the back surface of the gentle slope A, and one end of a rod 7 is pivotally connected to the bracket 6 by a pin 8.

Further, in the recessed portion 2 of the platform 1, a support side bracket 1 is attached to a side surface portion 10 that is bent perpendicularly to the bottom portion 5 along the long side 2B on the rear end side.
1 is fixed. A support block 12 is pivotally attached to the support bracket 11 by a pin 13, and the rod 7 passes through the support block 12 in a slidable (movable) manner. A compression spring 14 is disposed around the rod between the back surface of the gently sloped surface and the support block 12, and a slip-out prevention nut 15 is fixed to a male screw cut into the end of the rod 7.

A locking member 20 is pivotally mounted on the upper surface of the platform 1, and locks the stopper member 3 in a depressed state when the caster stopper is not in use.

Next, the operation of the caster stopper of the above embodiment will be explained.

For example, when the tip of the platform 1 is on the ground, the top surface of the platform 1 is inclined, and the stop member 3 of the caster stopper, which has a substantially L-shaped cross section, protrudes from the top surface of the platform when the lock is released. Therefore, when the caster is carried in, the caster climbs the gentle slope A of the stopper member 3. At the same time, the stopper member 3 rotates counterclockwise due to the weight of the caster, and the gentle slope A becomes approximately in line with the upper surface of the platform. As a result, the caster can be easily carried onto the platform 1, and the stopper member 3 does not interfere in any way.

On the other hand, as shown in FIG. 3, the caster 40 that has passed the stopper member 3
It comes into contact with and is locked. At this time, the stopper surface B stands up nearly perpendicular to the upper surface of the platform 1, and the force when the caster 40 hits the stopper surface B is applied to the rod 7.
It applies in the direction of pulling the compression spring 14, but does not apply in the direction of compressing the compression spring 14. Therefore, caster 4
0 will never go back.

(Effects of the invention) As explained above, the caster stopper of the present invention joins the front end platform upper plate material bent so as to form a concave portion to the rear end platform upper plate material, and A stopper member having a substantially L-shaped cross section and having a gentle slope A that becomes lower toward the slope A and a stop surface B forming an acute angle with respect to the gentle slope A is pivotally attached to the bottom of the inner surface of the recess at the lower end of the gentle slope, and Since the structure includes a spring member that biases the stopper member in the projecting direction,
It has the advantage that the casters on the platform can be securely locked without interfering with the loading of the casters onto the platform of the cargo handling machine, and that the platform is easy to manufacture without requiring complicated processing on the platform side. If applied to cargo handling equipment that lifts and lowers cargo handling machines, the effect of improving cargo handling operations using casters will be extremely large.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing an embodiment of the caster stopper according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is an example of a platform of a cargo handling machine equipped with the caster stopper of the present invention. DESCRIPTION OF SYMBOLS 1... Platform, 1A, 1B... Platform upper plate material, 2... Recessed part, 3... Stopper member, 4... Hinge, 7... Rod, 10... Side part, 12... Support block, 14... compression spring,
15...nut, A...gentle slope, B...stop surface.

Claims (1)

[Scope of utility model registration request] The top plate material 1A of the front end platform bent so as to form a concave portion is joined to the top board material 1B of the rear end platform, and the gentle slope A that becomes lower toward the leading edge of the top board material of the front end side is connected to the gentle slope A. A stopper member 3 having a substantially L-shaped cross section and a stopper surface B forming an acute angle is pivoted to the bottom of the tip side of the inner surface of the recess at the lower end of the gentle slope, and one end of the rod 7 is attached to the back side of the gentle slope A. A support block 12 is pivotally mounted on the rear back side of the recess, the rod 7 is movably penetrated through the support block 12, and a slip-out prevention member is provided at the other end of the rod, and the stopper member 3 A caster stopper characterized in that a spring member is provided around the rod 7 to bias the rod 7 in a projecting direction.