JPH0540060Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is widely used as a clamping device for secondary concrete products, and in particular in a clamping device for paving blocks used as paving stones for road surfaces, plazas, etc. It is about the mechanism.

(Conventional mechanism and its problems) Conventionally, as for the gripping mechanism of a paving block material clamping device, a hard elastic material 3 is installed inside the base of a machine frame 1 having a U-shaped cross section as shown in FIGS. 5 to 7. , was a clamping device of a gripping mechanism in which gripping teeth 4 in the form of a row of teeth were disposed in close contact with a mounting shaft 2 which was loosely fitted into a machine frame 1 on the upper surface thereof.

This is because the dimensional standards of paving blocks are diverse and there are deformed blocks with curved gripping surfaces.
In order to prevent short blocks from falling out of the clamp device, an elastic body was attached to the base of the gripping teeth to adjust the pressure applied to the gripping teeth.

However, in this conventional mechanism, since the gripping teeth are closely arranged, the pressure adjustment function of the elastic part does not function sufficiently, and the block material b has a problem of falling out from the gripping mechanism.

To solve this problem, it is necessary to use a high-pressure clamping device or to increase the size of the device, but there are problems in terms of technical solutions, cost, and impracticality.

This invention is aimed at solving the above-mentioned difficulties.

(Mechanistic issues to be solved) The conventional technology was based on the technical idea of increasing the number of teeth in the gripping mechanism to strengthen the gripping force.
This idea has been revised and the pressure adjustment function of the elastic body at the base of the grip teeth is improved by the pressure force exerted by the gripping teeth rather than the number of teeth, making the gripping mechanism compatible with the dimensional differences in the block material, making the pressure force against the elastic body more effective. This is a gripping tooth mechanism that acts on the

(Means for Solving the Problems) As a means for achieving the above object, the present invention provides a crimp adjustment member made of a hard elastic material at the lower part of the machine frame with a U-shaped cross section, and the upper part of the crimp adjustment member is mounted to the machine frame. This is a gripping mechanism in which gripping teeth in a row of teeth are arranged on the mounting shaft via an intervening member with spaces spaced at appropriate intervals.

(Function) Since the arrangement of the gripping tooth mechanism is provided with spaces at appropriate intervals on the upper surface of the elastic part through the intervening member, the pressing force applied to the elastic body at the base of the gripping teeth during clamping is determined by the elasticity of the space between the gripping teeth. Since the body is pushed up, the compression width of the elastic material at the base of the gripping teeth of the long block is increased, and the gripping action of the gripping teeth is also extended to the short block material.

(Example) In the drawing, 11 is the machine frame of the gripping mechanism 10;
2 is a hard elastic support built into the base of the machine frame. Reference numeral 13 is connected to a mounting shaft 14 mounted on the machine frame through gripping teeth joined to its upper surface. Reference numeral 15 denotes a washer of an interlayer material fitted to the mounting shaft.

The interior material may be colored. The spacer material 15 is provided with spaces 16 at appropriate intervals between the gripping teeth 13 to have a tooth row width that allows the pressure adjustment function of the elastic material to be sufficiently effective.

17 is a tightening nut. The gripping teeth 13 are formed of iron material, are formed with a slope angle inclined in the direction of the mounting axis, and are mounted to the clamp device by a mounting portion 18.

The clamping device fixes one of the opposing gripping tooth mechanisms and drives the other gripping mechanism to grip the block material B row from both sides in a clamping manner and transport it in and out. (Illustrations omitted) (Effects) The present invention has a space 16 at an appropriate interval between the gripping teeth 13.
The gripping body mechanism is provided with a space 16 that forms a bulge 12' for the escape action of the elastic material 12 that is pressed by the reaction force of the block material b against the gripping teeth 13 when the block material is clamped. As a result of the enhanced expansion/contraction adjustment action of the elastic material, the gripping function for block b is improved, and it is possible to handle dimensional differences and curved gripping surfaces where conventionally the locking action was not effective or the locking force was weak. The gripping force of the gripping teeth was also applied to the gripper, and the gripping action was effective.

As a result, the problem of block material falling off without the need for a high-pressure clamping device is eliminated, and the crimping force and mechanical accuracy of the clamping device are improved, which improves work efficiency and has the practical effect of preventing the danger of falling off. is remarkable.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted plan sectional view of the gripping mechanism of the present invention;
Fig. 2 is a side sectional view of Fig. 1, Fig. 3 is a partial sectional view showing the relationship between the gripping mechanism and the block material, Fig. 4 is a partial sectional view showing the gripping action of Fig. 3, and Fig. 5. 6 is a partially omitted plan view showing a conventional gripping mechanism, and FIG.
FIG. 7 is an enlarged partial sectional view taken along line B-B in FIG. 6; In the figure, 10 is a gripping mechanism, 11 is a machine frame, 12 is an elastic member, 12' is a bulge, 13 is a gripping tooth, 14 is a mounting shaft, 15 is a washer, 16 is a space, and 17 is a tightening nut. show.

Claims (1)

[Scope of utility model registration request] A crimping adjustment member made of a hard elastic body is provided at the lower part of the machine frame with a U-shaped cross section, and gripping teeth are arranged in a row of teeth at appropriate intervals on the mounting shaft attached to the machine frame above the crimp adjustment member through an intermediary member. A gripping mechanism in a paving block material clamping device, characterized in that: