JP2008148672A - Suspension creeper for farm work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems wherein as many half-sitting works are performed in farm work, especially, almost all of cultivation works inside greenhouse raising of tomatoes, cucumbers and the like is a half-sitting work that so much load is exerted on the legs and the waist due to the half-sitting works, and bent loin is caused by fatigue and pain, and to decrease load of body weight on the feet, knees and waist and to ease fatigue and pains to the feet, knees and waist. <P>SOLUTION: To receive the body weight of the worker, a safety belt 6 receiving the buttocks of a worker on a working vehicle is attached to an air-enclosed cylinder 3 that receives the load corresponding to the body weight so that the body weight load in working posture is received by the working vehicle. Since wheels are attached to the working vehicle, the working vehicle can move forwards and backwards, while working. In the case of a monocyclic truck, the working vehicle can move to the right and the left. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to an agricultural suspension cart for reducing the burden on the legs, knees, and hips due to the weight of the middle and lower back work of farming, and to relieve fatigue and pain of the legs, knees, and lower back.

When the working posture is low, the stool is used. However, since the work at the middle waist is performed without an auxiliary tool, the weight load is applied to the legs, knees, and hips as they are.

  JP 2003-125607 A

The work of tomatoes, cucumbers, etc. grown in the house is mostly mid-lumbar work, so the weight load due to the work posture is applied to the legs, knees and hips, causing fatigue and pain, which also causes the waist to bend. In particular, it is a difficult task to become an elderly person. The present invention has been made to solve this problem.

In order to receive the weight of the worker, a safety belt 6 that receives the worker's buttocks on the work carriage is attached to the pneumatic enclosure 3 that receives a load corresponding to the weight, so that the weight load due to the work posture is received by the work carriage.
Since the work cart is equipped with wheels, it can move back and forth while working, and in the case of a unicycle cart it can move left and right.

Lifting the hips according to the load in the safety belt 6 can reduce the load due to the weight on the legs, knees, and lower back. Therefore, the work efficiency can be improved and the lower back bend can be reduced by reducing fatigue and pain.
Embodiments of the present invention will be described below.
(I). The pneumatic cylinder 3 is attached to the work carriage. A safety belt 6 is attached to the cylinder outer cylinder 4.
(B). A handle type lock mechanism is attached to the cylinder outer cylinder 4 to lock the cylinder inner cylinder 5.

1 shows a front view, a side view and a plan view of a suspension farm for two-wheel agricultural work. The front view shows a cross-sectional view of the pneumatic enclosure cylinder. 2, 3 and 4 show detailed cross-sectional views of the pneumatic enclosure cylinder. FIG. 5 shows the operation state at each working height of the two-wheel agricultural suspension truck. FIG. 6 shows a front view, a side view, and a plan view of a single-wheel agricultural work cart. FIG. 7 shows an operating state at a working height of a single-wheel agricultural work suspension truck.

In FIG. 1, the components of the suspension truck for two-wheel agricultural work are shown. A wheel 2 is attached to the underframe 1 by a shaft 9, and a base 10 for attaching a pneumatic enclosure 3 and a basket for storing harvested items is attached by bolts 11. The pneumatic enclosure 3 is composed of a cylinder outer cylinder 4 and a cylinder inner cylinder 5 in which pneumatic pressure is enclosed. A bracket 8 is welded and joined to the cylinder outer cylinder 4, and a safety belt 6 is attached by a lifting tool 7.

The base 12 attached to the frame 1 of the pneumatic enclosure 3 with bolts 11 is welded to the cylinder inner cylinder 5 so that the enclosed pneumatic air does not leak. The upper part of the cylinder outer cylinder 4 is shown in FIG. 2, the sliding part of the cylinder outer cylinder 4 and the cylinder inner cylinder 5 is shown in FIG. 3, and the lock mechanism for locking the cylinder outer cylinder 4 to the cylinder inner cylinder 5 is shown in FIG.

FIG. 2 shows a state in which the upper sealed pneumatic seal and the pneumatic supply fitting 21 of the cylinder outer cylinder 4 are attached. A cap 20 is coupled to the cylinder outer cylinder 4 with a screw 25, and air pressure is sealed with an O-ring 24. The lower limit stopper bolt 22 is sealed by a seal washer 23, and the pneumatic supply fitting is screwed and sealed by winding a seal tape with a pipe taper screw. The air pressure supply fitting 21 incorporates a check valve, and the supplied air pressure is sealed by the check valve. It is possible to change the minimum height by changing the length of the stopper bolt 22.

In FIG. 3, the sliding portions of the cylinder outer cylinder 4 and the cylinder inner cylinder 5 are sealed with a U-packing 26 so as not to leak air pressure. The bush 27 transmits the force from the U packing 26 and the cylinder outer cylinder 4 to the cylinder inner cylinder 5. A rubber buffer 29 is attached to the shock buffer at the lowest position, and the impact force applied to the contact plate 30 from the stopper bolt 22 is reduced from being transmitted to the operator.

In FIG. 4, the structure which locks the cylinder outer cylinder 4 to the cylinder inner cylinder 5 is shown. The lock nut 32 is coupled with a screw 33, and the gripper 31 is locked by gripping the cylinder inner cylinder 5 by screwing the lock nut 32 with the handle 34 attached to the handle attachment screw 35. The gripper is divided into six by a conical cylinder, and is gripped and locked by a taper sliding portion with the cylinder outer cylinder 4.

In FIG. 5, the operation state in each work height at the time of farm work is shown. Operation 1 shows the system at the lowest limit, and increases as operations 2, 3, 4, 5, and 6 as the working height increases. As for the internal volume of the cylinder 3, the lowest limit operation 1 is minimum, and the maximum volume operation 6 is maximum. The pressure (P) X volume (V) has a certain relationship due to the characteristics of the air pressure, and the maximum lifting force acts on the cylinder outer cylinder at the lowest limit and the smallest lifting force acts on the highest limit. If the sealed air pressure in the cylinder 3 is adjusted in accordance with the weight of the farm worker, an appropriate lifting force of the safety belt can be obtained, and the load on the foot, knee and waist can be reduced.

FIG. 6 shows a front view, a side view, and a plan view of a single-wheel agricultural work suspension cart. The structure of the cylinder 3 and the components attached to the cylinder 3 are the same as those in FIG.
The two-wheel farm work suspension cart can travel before and after the worker, whereas the one-wheel farm work suspension cart can travel to the left and right of the worker. Since the single-wheel agricultural work suspension cart receives a load by one wheel, the fall prevention 13 is attached.

  It is the front view, side view, and top view of the suspension truck for two-wheel agricultural work of the Example of this invention.   It is A section cross-section detail drawing of a pneumatic enclosure cylinder.   It is B section detailed drawing of a pneumatic enclosure cylinder.   It is C section cross section detail drawing of a pneumatic enclosure cylinder.   It is the operation state in each working height of the suspension truck for two-wheel agricultural work.   It is the front view, side view, and top view of the suspension truck for single-wheel agricultural work of the Example of this invention.   It is the operation state at the working height of the suspension truck for single-wheel agricultural work.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underframe 20 Cap 2 Wheel 21 Pneumatic supply bracket 3 Pneumatic enclosure cylinder 22 Stopper bolt 4 Cylinder outer cylinder 23 Seal washer 5 Cylinder inner cylinder 24 O-ring 6 Safety belt 25 Screw 7 Lifting tool 26 U packing 8 Bracket 27 Bush 9 Shaft 28 Bolt 10 Base 29 Rubber buffer 11 Bolt 30 Contact plate 12 Base 31 Gripper 13 Fall prevention 32 Lock nut
33 screws
34 Handle
35 Handle mounting screw

Claims (2)

A pneumatic enclosure with set pressure is attached to a frame with two or one wheels, and a safety belt is attached to a cylinder outer cylinder that can be raised and lowered in the vertical direction to work on the burden on the operator's feet, knees, and waist. Agricultural suspension cart that can be reduced according to height. The suspension cart for agricultural work according to claim 1, wherein the outer cylinder of the cylinder is provided with a handle-operating lock mechanism that can be locked at any height, and the work height can be maintained.

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