JPH0218723Y2 - - Google Patents

Description

[Detailed description of the invention] Spiked tires lose their function after being used for a certain period of time, but by removing the studs, they can be used as regular tires. Previously, the only option was to remove the studs one by one using a special removal tool, which was time-consuming and often used as is, causing damage to the road. It was causing noise. The purpose of the present application is to provide a device that can remove rivets while the tire is attached to a vehicle, and its gist is to provide a device that has a rivet wheel or a rivet claw on a rotating shaft. A spike tire drive characterized in that a sprocket that engages with a chain is provided, and a rivet claw wheel or a large diameter tire support wheel that rotates in the opposite direction to the sprocket is provided close to the rotating shaft on both sides thereof. In the tack device. This will be explained in detail below.

The fastener driving device according to the present invention has a cross section on the outer periphery of a rotating shaft 4, which is supported by a bearing 2 fixed on a suitable table and driven by a prime mover (not shown) via a belt pulley 3, etc. A ratchet wheel 6 having a riveting pawl 5 in the shape of a nearly right triangle is fixed thereto, and a sun gear 7 is similarly attached to the rotating shaft 4 on one side adjacent to the ratchet wheel 6.
A tire support wheel 9 is provided to rotate in the opposite direction to the rotating shaft, and is fixed to the sun gear and pivotally supports the planetary gear 8 meshing with the sun gear on the side, and is similarly attached to the vehicle on the other side of the ratchet wheel. A tire support vehicle 10 that supports the spiked tire from below is provided so as to rotate in the opposite direction with respect to the rotating shaft 4. To use the device of the present invention, the tire is placed on the tire support wheels 9, 10 so that the axial direction of the spiked tire matches the direction of the rotating shaft 4, and the part where the rivets are installed is placed on the rivet claw wheel 6. Fix the relative position so that it is on top. Then, when the rotating shaft 4 rotates, the tack extractor pawl wheel 6 rotates in the same direction as the rotating shaft, and the tire support wheel 9 rotates in the opposite direction via the sun gear 7 and the planetary gear 8, thereby supporting the spiked tire 3.
0 in the opposite direction to the riveting ratchet wheel 6.
At this time, the pawl 5 is the stud 3 that is slightly protruding from the tire.
It collides with the body of No. 1 at high speed, and the rivet is pulled out by this impact force.

In the above embodiment, a sprocket 26 of approximately the same diameter is installed in place of the riveting ratchet wheel 6, and the rivets are stretched between this and a pair of small diameter sprockets 26a and 26b provided in the radial direction of the sprocket 26. When the chain 25 having the extraction pawls 25a is rotated, the trajectory of the rivet extraction pawls 25a when engaged with the sprocket 26 is nearly horizontal, so the impact force against the studs of the spiked tire becomes larger, and the rivet extraction pawls Since the engagement time between 25a and the stud becomes longer,
Extraction efficiency is improved.

According to the device of the present invention, the studs can be easily removed without damaging the tire and without the need to remove the tire from the vehicle, making it possible to use spiked tires that were previously discarded as regular tires. This greatly contributes to resource conservation,
This can also prevent waste of fuel, damage to roads, noise generation, etc. caused by using spiked tires as they are.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention, Fig. 2 is a partially omitted front view of the riveting ratchet wheel shown in Fig. 1, and Fig. 3 shows the main parts of another embodiment of the invention. An explanatory diagram showing,
4 is a partially enlarged front view of the chain 25 in FIG. 3, and FIG. 5 is a partially plan view of the chain 25. 11...Keyway, 12...Key.

Claims (1)

[Scope of utility model registration request] A sprocket that engages a riveting ratchet wheel with riveting claws on its outer periphery or a chain equipped with riveting claws on a rotating shaft supported by a bearing fixed on a table and driven by a prime mover. , and a tire support wheel having a diameter slightly larger than that of the rivet ratchet wheel or sprocket, which rotates in the opposite direction to the rivet ratchet wheel or sprocket, is provided on both sides of the rotating shaft in close proximity to the rotary shaft. A tack removal device for spiked tires.