JPH0438641Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to the structure of an agricultural tool that allows work to be done in an upright position, such as with a fork or shovel, which requires bending at the waist. However, depending on the work, civil engineering workers can also use it.

[Background of the invention] Agricultural tools such as forks and shovels have been used in Europe for hundreds of years, but now they have spread all over the world, and livestock farmers in Japan have been using them for a considerable number of years. However, as far as we can see in paintings and movies, it seems that agricultural tools such as forks and shovels have not made any progress during that time.

An analysis of the work involved in using agricultural implements such as forks and shovels reveals that the worker holds the handle of the implement, leans forward, inserts it into the object being transported, and applies even more force from that position. Stretch your body while lifting the object. Working after stretching your body is relatively unresponsive to your body, but repeating work in a stooped position hundreds of times a day is extremely hard work and can eventually damage your body.

[Problems to be solved by the invention] The purpose of the invention is to make agricultural work easier by providing agricultural tools such as forks and shovels that alleviate the above-mentioned arduous work.

[Means and operations for solving the problems] In the present invention, a single post about the height of a person's waist is attached to the center of the handle of the agricultural tool. At the attachment point, the handle can be tilted at any angle with respect to the support and can be oriented in any direction.
Furthermore, the handle is rotatable around its own centerline and is equipped with an easy-to-operate brake device.
In addition, a ratchet foil is incorporated into the front end of the handle for attaching instruments such as forks and shovels, and by removing the claw, the instrument can be turned downward immediately. Therefore, objects placed on a fork or shovel can be immediately unloaded anywhere within its reach. Furthermore, a cylinder and a piston are incorporated into the support to make it telescopic, and by connecting it to a foot pedal or compressed air pump, it can be lifted overhead. Of course, depending on the work, if all of the above functions are not required, only the required functions may be installed.

The details of the structure of the present invention will be explained below with reference to drawings of embodiments.

[Example] Example 1 This example relates to a fork that is convenient to use when carrying hay, corn, etc. on the floor to a unicycle.

In Fig. 1, the handle 1 is slightly bent downward, so that it will remain stable when the handle 1 is lifted horizontally. A handle 2 is fixed to the rear end of the handle 1 like a normal civil engineering shovel, and a ratchet wheel 4 to which a fork 3 is fixed is attached to the front end.

In the center of the handle 1 is a pin joint 5 that is perpendicular to the handle and horizontal.
A support column 6 is attached via the . The column 6 has a length about the height of a person's waist, and a thrust bearing 7 is provided at the top. Therefore, the handle can freely set an angle of inclination with respect to the support column 6, and can face in any direction. The bottom end is covered with a rubber cover 8 to protect the floor surface.

The pawl 9 for the ratchet wheel 4 fixed to the fork 3 is pivoted to a bracket 10 fixed to the front end of the handle, and is pulled by a spring (not shown) to the ratchet wheel 4, which is pivoted to the same bracket 10. At one time, it was supporting the Fork 3 from hanging. Furthermore, the pawl 9 is connected with a wire or the like to an operating lever 11 provided in front of the mounting position of the support post 6 of the handle 1. When the operating lever 11 is grasped together with the handle 1, the pawl 9 is released from the ratchet wheel 4, and the fork 3 is moved downward. It has a structure that hangs from the top. When the operating lever 11 is loosened, it is separated from the handle 1 by the spring 12.
The pawl 9 again engages with the teeth of the ratchet foil 4.

To explain the function of the fork 3, first place the tip of the fork in front of the object to be transported, and if the fork points too downward, pull the tip of the handle to raise the fork to an appropriate angle, and then lower the support 6. Tilt it forward, hold the handle 1 at the front of the support 6 attachment part, and the handle 2 at the rear end, and insert the fork 3 under the object while tilting the support 6 forward.This operation is as follows: You can do it by just putting your weight on it without bending over, which is easier than when there is no support post 6.

Next, in order to lift the object to be transported, the fork 3 is lifted using the pin joint of the support 6 as a fulcrum, and the support 6 is erected vertically. This action allows the handle 1 to be lifted horizontally to waist height without bending down or using much force while placing an object on the fork 3.

Next, the handle 1 is rotated around the support 6, the fork 3 is positioned on the wheelbarrow, and the operating lever 11 is grasped together with the handle 1 to approach the handle.The pawl 9 is pulled by the operating lever 11 and the ratchet wheel 4 out of the
The fixed fork 3 of the ratchet wheel 4 hangs downward, and the items loaded on the fork 3 fall onto the unicycle, completing one loading operation and repeating the process of bringing the fork 3 in front of the object to be transported. Become. In short, the work is much easier physically compared to conventional work.

Embodiment 2 In this example, an object to be transported is scooped up with a shovel, the handle is set horizontally, the shovel is lifted to approximately head height, the shovel is rotated horizontally, and the object is loaded onto the loading platform of a truck or the like.

In FIG. 2, the front part of the handle 21 is slightly lowered to stabilize the work. A shovel 23 is fixed to the front end of the handle 21, and a normal bifurcated handle 22 is fixed to the rear end.

A ball bearing is fitted in the center of the handle 21, and the bearing case 25 is connected to the upper end of one pillar 26 via a pin joint 24. A brake shoe 29 is pressed against the outer periphery of the bearing case 25 by a spring 30, and a brake arm 31 holding the brake shoe 29 has its other end connected to the handle 21 via a pin joint.

When rotating the shovel 23 to drop an object, it is necessary to loosen the brake shoe 29, so attach a brake lever 32 of the same shape as the brake arm 31 in the opposite direction in front of the brake arm 31. The brake can be released by connecting the two with a wire or the like as shown in FIG. 2 and bringing the front end of the brake lever 32 close to the handle 21. Then, from the handle 21 to the ring-shaped stopper 3
3 and hook it onto the front end of the brake lever 32,
The brake release state can be maintained for the required time.

A thrust bearing 27 is provided close to the upper end of the support column 26, and a short horizontal bar 28 is fixed to the lower end of the support column 26 in the shape of an inverted T, which serves as a resistance against burying of the lower end of the support column 26 in soft ground.

Furthermore, the support column 26 is a double pipe from just below the thrust bearing, the outer pipe is fixed downward as a cylinder, and the inner pipe is connected to the plunger 3.
Ascend upward as 4. It could be powered by a human-powered foot pedal, but since it requires a considerable amount of energy, compressed air is used. Therefore, a compressed air blowing pipe 35 short pipe is attached to the lower end of the support column 26,
An air release pipe 36 is branched from this, and a three-way valve 37 is installed at the branching position of both pipes, so that a valve operating lever can be extended and operated by foot as shown in FIG. The blow pipe 35 is connected with a hose to a compressed air cylinder or tank.

Its action is almost the same as in Example 1, except that the shovel 23 scoops up the object to be transported, and the handle 21 is made approximately horizontal.
At the same time, after making the strut 26 vertical, the three-way valve 37 is switched to air blowing, the plunger 34 and the upper structure are raised to approximately head height, and the shovel 26 is rotated horizontally.
3 above the truck bed. During this time, the hand holding the handle 22 of the handle 21 cannot be released, so use the hand supporting the front part of the handle 21 to hold down the brake lever 32 and hook the stopper 33 to release the brake and remove it. Rotate the handle 22 and move the shovel 23.
Turn the object 90 degrees and drop it onto the truck bed. The empty shovel 23 is rotated upward, horizontally rotated to be parallel to the truck, the three-way valve 37 is released, and the plunger 34 is lowered.
Shovel 23 descends to waist height. The above operations can be repeated thereafter.

[Effects of the invention] According to the invention, by providing a single support in the center of the handle of agricultural implements such as forks and shovels, the act of bending over during digging or lifting work is greatly reduced. Fatigue is significantly less than before,
This will reduce the number of young farmers leaving their rural areas and give farmers more leeway to enjoy their lives.

[Brief explanation of the drawing]

Figure 1 is a side view of a ratchet type fork with one strut, Figure 2 is a side view of a shovel with a brake equipped with a telescoping strut, and Figure 3 is an air blowing pipe, air release pipe and three-way valve. FIG.
Furthermore, Figure 4 is a diagram of working with the pillar height normalized,
FIG. 5 is a diagram showing how to adjust the height of the column to the truck loading platform, FIG. 6 is a sectional view of the upper end of the column, and FIG. 7 is a sectional view of the lower end of the column and an explanatory diagram of the foot operation of the three-way valve. 1...Handle, 2...Handle, 3...Fork, 4
...Ratchet wheel, 5...Pin joint, 6...
...Strut, 7...Thrust bearing, 8...Rubber cover, 9...Claw, 10...Fracket, 11...
...Operation lever, 12...Spring, 21...
Handle, 22...Handle, 23...Shovel, 24...
...Pin joint, 25...Ball bearing, 26...
...Strut, 27...Thrust bearing, 28...
Horizontal bar, 29...brake shoe, 30...spring, 31...brake arm, 32...brake lever, 33...stopper, 34...plunger, 35...air blowing pipe, 36...air release Pipe, 37...three-way valve.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A single support is attached to the center of an agricultural implement with a handle, such as a fork or shovel, through a horizontal pin joint and a thrust bearing that can rotate freely horizontally, and the support is mounted on the fork or shovel. An agricultural tool with a support attached to the handle, which is characterized by a device that rotates a fork or shovel around the handle in order to drop a fork or shovel around the handle. A claim in which a bearing is fitted to the handle, the bearing case is attached to the support, and a brake shoe pin-connected to the handle is engaged with or removed from the outer periphery of the bearing case.
(1) Agricultural tool with a support attached to the handle as described (3) In order to raise the loaded shovel to the height of the worker's head and operate it, compressed air is blown into the support and the air inside the support is released. Claim (1) in which a foot-operated three-way valve connected to the air release pipe is provided at the bottom of the column, and the upper end of the plunger is connected to the shovel handle.
Agricultural implement with a support attached to the handle as described.