JP2013110965A - Auxiliary vehicle for non-powered light work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an auxiliary vehicle for non-powered light work, having versatility, further high safety and excellent convenience in use.SOLUTION: This vehicle is not put in the movable state by an oil actuator 103 provided below a seat 101 and stored in an air or a coiled spring as far as a user 100 does not sit on the seat 101, and the movable state follows the opening and closing degree of the oil actuator 103 provided below the seat 101 and stored in the air or the coil spring. A traveling brake hydraulic-coupled to the actuator is always controlled to prevent scudding of the akinetic power auxiliary vehicle for light work and lessen user's moving burden. In this structure, the user 100 also puts his feet on the ground and moves up and down to apply his body weight to the seat 101, or leaves the seat or moves in the direction of leaving the seat, further in addition to this, moves in the direction of horizontally bending to move in combination with the steering operation, whereby the three-dimensional looper-like movement and the steering operation can be achieved.

Description

  TECHNICAL FIELD The present invention relates to a non-powered light work auxiliary vehicle that basically does not use power and can move an action point back and forth, right and left, or move up and down only by the human power of a passenger.

  The present invention relates to a non-powered light work auxiliary vehicle having a working end that moves horizontally or moves up and down only by human power without using power, and more particularly, fatigue such as an elderly person or a sick person. In the case of a user who is easy to work, the accumulation of fatigue is prevented in advance, and work such as horticulture and farming, which is sometimes performed in an unstable posture, is caused by injuries, illnesses, or aging (for example, due to arthritis) The present invention relates to a non-powered light work auxiliary vehicle that can maintain a high work efficiency for a relatively long time even when a disabled person (people with handicap) continues for a long time.

  Conventionally, even if it is a light work, if the operation of squatting, crawling, and stretching frequently is repeated frequently, or if it continues for a long time, the place is especially in a narrow place such as an aircraft wing work. In some cases, the user often keeps an unreasonable posture, and as a result, the physical fatigue often accumulates for light work.

  The light work here is not limited to so-called orchards and farms, but includes all kinds of seedling cultivation, horticulture, planting, pollination, fruit picking, selection, etc. Or it is a broad concept including inspection, wiring, piping, painting, repair work, etc. performed in a narrow place (including the inside of the wing etc.) under the ceiling including a groove with a lid.

  If such an unnatural posture is continued or repeated for a long time, even young sportsmen and workers accumulate muscle fatigue, and recovery takes a considerable amount of time. In addition, if the support surface is slanted even if it is rough or narrow, the middle-aged worker is not only very tired but also moves and escapes even in a short time. This makes it difficult to perform an agile operation and makes it extremely dangerous in some cases.

  On the other hand, in order to easily repeat local observation, search, selection, situation judgment, precise fingertip work, etc. on the site, this is done with a remote control robot that is simple and suitable for repetitive work. This is difficult, and it is necessary for a skilled person (human), who has the ability to consider and take countermeasures, to do this with great care while moving / stopping at any local site and taking advantage of the five senses.

  Therefore, for lowering work of conventional automobiles, etc., an electric or hydraulic jack that lifts up the car itself, a pit that allows the operator to work upright, and easily three or more wheels (of which, There was a work auxiliary vehicle used on a concrete or asphalt paved floor with at least one swinging wheel with casters.

  Initially, the present inventor started by using these light work auxiliary vehicles on low ground pneumatic tires and caterpillars on soft ground fences, farms or beaches. It is clear that there is no commercially available product suitable for surface support), and that it is not possible to achieve the object of the present invention to reduce the fatigue that comes from the unreasonable posture of the operator by modifying the conventional one. Therefore, starting from a fundamental review of the working posture and usage state, and continuing research on the device, the present invention has arrived at a lightweight and user-friendly invention suitable for the purpose.

JP-A-5-193515 JP-A-9-28511 JP-A-11-18880 JP 2000-236706 JP2003-33253A Japanese Patent Application Laid-Open No. 2003-125607 describes an all-terrain type self-propelled vehicle with hydraulic power that can be folded and steered on a horizontal plane. This is a self-propelled vehicle with an engine equipped with a four-wheel independent drive type hydraulically driven low-pressure rubber tire and a hydraulic actuator that enables the vehicle body to be folded back and forth horizontally around the vertical axis at the center of the vehicle body. It is a large powered vehicle that can be driven to cultivate land or weed, but can be operated directly on the vehicle or remotely controlled by the driver. However, the invention described in Patent Document 1 is not a four-wheel independent suspension, and is not compatible with, for example, a V-shaped or inverted V-shaped uneven ground, and this makes it impossible to take care of flowers and vegetables in the greenhouse. . Moreover, this is a power vehicle with a powerful hydraulic pump, which is heavy and does not suit the application of the present invention (see Patent Document 1).

  The device of Patent Document 2 is a wooden box-shaped auxiliary chair in which small wheels with casters suitable for flooring work are arranged in four corners, but this is suitable for manual movement on a smooth floor, but soft. It is difficult to move along the foot of the soil field because of its high resistance to movement (see Patent Document 2).

  In the invention described in Patent Document 3, a vertical bolt is loosely attached to the center of the upper surface of a clog-shaped wooden chair, and a seat plate is rotatably attached. Only a pair of bands is attached to the hips of the human body. Is. Certainly, it would be easy for a person sitting in a sitting area around the center bolt to turn itself with his / her foot, but it would be difficult to move the chair in the XY direction, so solving the aforementioned problems Is insufficient (see Patent Document 3).

  The invention described in Patent Document 4 is pivotally supported by a thrust ball bearing in which rubber wheels are pivotally mounted at four corners and a rotating disc-shaped seat is installed on the upper surface of a reverse saddle-shaped body. Although an operator who sits down on a disk can move freely in the front-rear direction and the rotation direction, it is not sufficient to solve the above-described problems of the present invention (see Patent Document 4).

  As for the invention described in Patent Document 5, this means that the seat surface moves up and down with the weight of the worker (lowers when the worker's weight is applied, and rises with a spring when the weight is not applied), The movement is linked to at least two wheels of the lower four-wheeled vehicle connected via a one-way clutch (for example, a freewheel hub of a bicycle) and moved forward or backward by repeated vertical movement of the worker. It is a “movable chair” (see Patent Document 5).

  Patent Document 6 describes that this is a chair with a backrest for a worker, which is pivotable on the upper part of a two-wheel front and rear ultra-low pressure wide tire via a lifting mechanism with a pneumatic damper. Can move up and down. The back and forth movement is performed by the operator kicking the ground. This is easy to run on soft rough terrain and has a pneumatic damper that can adjust the seat up and down, so it seems easy to use, but forward and backward movement is done by kicking the ground with the operator's feet There is a drawback that the steering device is not provided (see Patent Document 6).

  According to the prior inventions described in Patent Documents 1 to 6, it is still difficult for an operator to place and move each part of the body at a stable intermediate position in a ground such as a heel that is soft, stepped, and uneven. It was difficult to repeat the automatic operation accurately.

  Moreover, it is not easy to move along the soft ground with many slopes and unevenness as described above, and the fatigue level only increases when working for a long time.

  Although such a problem may be partially solved by the said literatures 1-6, the thing which is lightweight, versatile, and safe and excellent in usability has not been obtained so far. It is a problem of the present invention to solve this.

  The non-powered light work auxiliary vehicle by the present inventor has observed and studied the state of insect insect trapping and hookworm movement, and after studying it, three to four swings that can perform movements similar to the pinworm movement and steering movement. Each wheel is independently suspended by a moving arm, and these are combined with wheels or crawlers, making it possible to stop at any position in the moving stroke using the vertical and horizontal movements using the operator's own weight as a power source. Invented the car.

  The non-powered light work auxiliary vehicle according to the present invention is lightweight, portable and easy to push and pull, can move following various conventional unreasonable postures required by workers, and has a center of gravity of the body. It is a non-powered light work auxiliary vehicle equipped with a folding-type insect take-up type moving mechanism capable of supporting a part and stopping at an arbitrary position within a stroke.

  Further, the non-powered light work auxiliary vehicle according to the present invention omits the steering handle which prevents the compactness from being disturbed by the work, and the operator himself / herself has a slight force with the butt in the direction opposite to the steering direction in the direction transverse to the seat. It is characterized by having an appropriate horizontal braking force that can be steered in any direction left and right by adding.

  In addition, since the non-powered light work auxiliary vehicle according to the present invention basically adopts a four-wheel independent suspension system, even if there is a step or inclination in the cross section of the ground in the traveling direction, the user is almost upright within the stroke. It is characterized by being able to ride.

  According to the present invention, a light-powered light work that can maintain high work efficiency even when a middle-aged worker continues light work such as horticulture or farming for an extended period of time while reducing user fatigue An auxiliary vehicle is provided.

It is a side view of the non-powered light work auxiliary vehicle embodiment of the present invention. It is a figure shown about steering of the non-powered light work auxiliary vehicle of this invention.

Hereinafter, a non-powered light work auxiliary vehicle according to the present invention will be described with reference to the drawings.
FIG. 1 is a side view of an embodiment of the present invention. 100 is a user, 101 is a seat, 102 is a damper, 103 is an oil or an oil actuator housed in a coil spring, 104 is a movable joint that connects a swing arm and a main shaft inside the central frame, Reference numeral 105 denotes a swing arm, 106 denotes a central frame, 107 denotes a main shaft inside the center of the vehicle body, 108 denotes the ground, 10A denotes an axle, and 10B denotes a wheel.
In FIG. 1, an oil actuator 103 housed in air or a coil spring under the seat 101 is connected to the seat 101. The oil actuator 103 accommodated in the air or coil spring is connected to a hydraulic travel brake mechanism provided on the axle 10A via a hydraulic hose.
When the user 100 is not on the seat 101, the oil actuator 103 accommodated in the air or coil spring is closed because no force is applied to the seat 101, and the pressure in the hydraulic hose, that is, the pressure in the hydraulic system is At the maximum, the hydraulic traveling brake mechanism provided on the axle 10A locks the wheel 10B.

When the user 100 gets on the seat 101, the oil actuator 103 accommodated in the air or coil spring is opened by the weight of the user 100, the wheel 10B is unlocked, and the non-powered light work auxiliary vehicle can run. Become.
Since the oil actuator 103 accommodated in the air or coil spring is subjected to a change in the position of the user 100, that is, a force mainly corresponding to the up and down of the user 100, the pressure in the hydraulic system changes accordingly.
Since this change is sequentially transmitted to the hydraulic traveling brake mechanism provided on the axle 10A, an appropriate braking force is always applied to the wheel 10B, preventing the non-powered light work auxiliary vehicle from running away and the burden when the user moves. Can be reduced.
Further, the axle 10A is provided with a forcible braking, that is, a parking brake, in addition to the hydraulic traveling brake, which is manually applied when the traveling of the non-powered light work auxiliary vehicle is stopped. Operate and lock the wheel 10B.
At this time, the movable joint 104 connecting the swing arm and the main shaft inside the central frame is also locked together, and the user 100 can work at the optimum position desired by the user.
The oil actuator 103 accommodated in the air or coil spring is connected to the seat 101 and the central frame 106, but one of the dampers 102 is connected to the seat 101 separately from the other, and the other of the dampers 102 is connected to the seat 101. Since it is still connected to the central mount 106, the height of the non-powered light work auxiliary vehicle is slowly lowered when the user 100 sits deep and quickly raised when the user 100 stands up. Therefore, the non-powered light work auxiliary vehicle has a natural followability to the vertical movement of the worker, and reduces the burden on the user 100.
Note that when the vehicle simply travels on the ground 108, braking of the wheel 10B is unnecessary, and therefore braking of the wheel 10B is manually released regardless of whether the oil actuator 103 accommodated in the air or the coil spring is opened or closed. It is supposed to be possible. At this time, the swing arm 105
The movable joint 104 connecting the main shaft inside the central frame can be manually locked at the most comfortable height of the user 100 who is on board.
However, even if the ground 108 is horizontal, it is extremely difficult to move particularly when the user 100 is inclined in the direction opposite to the direction in which the user 100 is moving, and the user 100 carelessly touches both feet from the ground 108. As soon as they are separated, the non-powered light work auxiliary vehicle is worst and falls into a situation where the user 100 runs backward.
Therefore, a one-way clutch is provided on the axle 10A of the non-powered light work auxiliary vehicle of the present invention.
This one-way clutch operates simply when the non-powered light work auxiliary vehicle travels on the ground 108, and the wheel 10B rotates only in one direction, that is, the rotation A direction shown in FIG. It is responsible for the advancement only shown in.
As a result, the user 100 can safely move while riding the non-powered light work auxiliary vehicle even when the ground 108 is uphill.
The type and structure of the one-way clutch are not particularly limited, and may be the simplest and strong cam type that is simply provided on the axle 10A, but in reality, a wire release or a flexible hydraulic hose is partially provided. It is preferable that the central frame 106 can be controlled via a hydraulic pipe.
In other words, this is related to the constant braking of the wheel 10B by the degree of opening and closing of the oil actuator 103 accommodated in the air or coil spring. When the wheel 10B is sufficiently braked, it is released and slowly retracts. This is to make it possible.
Since the wheels 10B are each independently suspended, even if there are a few steps on the ground 108, all the wheels are always in contact with the ground, and the stability of the non-powered light work auxiliary vehicle is not impaired.
In addition, the non-powered light work auxiliary vehicle of the present invention having a scale-taking structure is used because it is always kept level with respect to the direction of gravity even if the height of the seat 101 changes or the state of the ground 108 changes. The burden on the person 100 is greatly reduced.
Needless to say, the above is the same even when the wheel 10B is a crawler.
FIG. 2 shows the steering of the non-powered light work auxiliary vehicle according to the present invention. 201 is a main shaft (107 in FIG. 1) inside the central frame, 202 is a central return spring, 203 is a spherical bearing, 204 is a stop pin, and 205 is a stop pin gap adjusting handle. For the sake of explanation, FIG. 2 shows the state in which the seat 101, the damper 102, and the oil actuator 103 housed in the air or coil spring in FIG. 1 are removed and the central frame 106 in FIG.
Each swing arm 105 in FIG. 1 has a spherical surface so that it moves in a horizontal direction with two front and rear wheels as a pair with respect to the main shaft 107 in the center frame in FIG. 1 at the center of the center frame 106 in FIG. They are connected by a bearing 203.
Therefore, the user 100 in FIG. 1 can steer the non-powered light work auxiliary vehicle by simply moving the buttocks left and right while riding on the seat 101 in FIG.
The spherical bearing 203 is provided with a central return spring 202 in parallel. Therefore, as soon as the user 100 in FIG. 1 stops moving his buttocks left and right on the seat 101 in FIG. 1, the wheel 10B in FIG. 1 returns straight to the traveling direction and can go straight.
The steering angle of the left and right can be changed to the specified angle by fixing the stop pin 204 to the central frame 106 in FIG. 1, but it can be varied by providing a stop pin gap adjustment handle 205 as in this embodiment. You may do it.
It should be noted that the structure of this part is merely an example, and it goes without saying that it is not necessary to use a combination of a spherical bearing and a central return spring.

  The present invention may be embodied in many forms without departing from its essential structure. Therefore, it is needless to say that the above-described embodiment is merely illustrative and does not limit the present invention.

The non-powered light work auxiliary vehicle of the present invention is mainly intended for use in horticulture, agricultural work, etc., but is not limited to this, and is applicable to all uses that require light work in an unstable posture. Is possible.

DESCRIPTION OF SYMBOLS 100 User 101 Seat 102 Damper 103 The oil actuator 104 accommodated in air or a coil spring 104 The movable joint which connects the rocking arm and the main shaft in a vehicle body main body 105 Swing arm 106 Central stand 107 Central stand Main shaft 108 in the ground 10A Axle 10B Wheel 201 Main shaft 202 in the center frame 202 Central return spring 203 Spherical bearing 204 Stop pin 205 Stop pin gap adjustment handle

Claims (6)

Basically it is a non-powered light work auxiliary vehicle that does not use power, moves or moves up and down or expands and contracts only by human power,
The actuator provided under the seat does not move unless the user is seated in the seat, and the movable state follows the degree of opening and closing of the actuator provided under the seat and is hydraulically coupled to this traveling brake. A non-powered light work auxiliary vehicle characterized by preventing the unpowered light work auxiliary vehicle from running away and constantly reducing the burden of movement for the user by always controlling the vehicle. The light work auxiliary vehicle has a structure in which at least one independent one-way clutch-equipped wheel or crawler is pivotally attached to the tip portion of two to four independent suspension swing arms, and a central frame having a seat at the top. It is pivotally mounted so that it can be bent vertically and horizontally, and each central frame pivot part is provided with an elastic restoring mechanism biased to recover to the initial position and a parking brake capable of stopping at any position within the vertical stroke. The non-powered light work auxiliary vehicle according to claim 1 characterized by the above-mentioned. 3. The non-powered light work auxiliary vehicle according to claim 1 or 2, wherein the elastic restoring mechanism of the vertical movement of the central frame or the horizontal bending pivot is an elastic restoring mechanism including an air spring or a damper.   4. The non-powered light work auxiliary vehicle according to claim 1, wherein the non-powered light work auxiliary vehicle has a structure that is fast for restoring the load upward and slow for the downward load operation.   The one-way clutch built in the rotation support part of the wheel or crawler of the light work auxiliary vehicle can be controlled from the central frame via a hydraulic release equipped with a wire release or at least a flexible hydraulic hose. 5. The non-powered light work auxiliary vehicle according to claim 1, which is a clutch.   The user moves his / her feet up and down on the ground and puts his weight on the seat, moves in the direction of leaving or leaving the seat, and in addition to this, moves in the horizontal bending direction and moves in combination with the steering operation. The non-powered light work auxiliary vehicle according to any one of claims 1 to 5, which can make use of a scale insect movement and a steering operation.

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