KR102400095B1 - Agricultural rail lifter - Google Patents

Abstract

The present invention relates to an agricultural rail lift, in which a horizontality sensor for sensing a horizontal state of a work foothold of a rail lift is installed, and a cylinder and a BLDC drive motor is applied such that a worker can do a work more safely on the work foothold, wherein the cylinder and the BLDC drive motor can control lifting and lowering speed of the work foothold and control speed when a lift body starts to move and stops. The present invention provides the agricultural rail lift, in which a lift body moves on a rail or the ground and a work foothold on which a worker rides is configured to be lifted and lowered by driving a link assembly mounted in the lift body to carry out the intended work. The agricultural rail lift comprises: a horizontality sensor which is mounted on at least any one side of a lift body and a work foothold to drive the lift in a safe mode state if the horizontal state of the work foothold, on which a worker rides, exceeds a specific degree to be inclined; an electric driving device in which a power transmission means is connected and installed between a shaft of a BLDC driving motor and a wheel side shaft of the lift body, wherein the BLDC drive motor is installed in the lift body as a means for providing power for driving the lift body; and a controller which includes a load cell type foothold switch installed on the work foothold as a means to regulate the driving of the lift body and controlling the driving of the BLDC drive motor for driving the lift body and the driving of a lift assembly for lifting and lowering the work foothold.

Description

Agricultural rail lifter

The present invention relates to an agricultural rail lift.

In detail, the present invention installs a horizontal sensor for detecting the horizontal state of the working platform of the rail lift, and drives the cylinder and BLDC to control the lifting speed of the working scaffold and the speed at the start and stop of the movement of the lift body It relates to an agricultural rail lift that enables a worker to perform safer work on a work platform by application of a motor.

In addition, the present invention makes the movement of the rail lift more stable in general terrain by applying an integrated rail driving wheel and an external transfer wheel made of a resin-based material as wheel means for the running of the rail lift, It relates to an agricultural rail lift that allows convenient maintenance such as rapid replacement according to wear of the transfer wheel.

In general, facility gardening refers to the intensive production of vegetables, fruit trees, flowers, etc. within the facility while artificially controlling the cultivation environment using facilities such as glass greenhouses, plastic houses, and large tunnels.

In Korea, there are four distinct seasons, so cultivation of horticultural crops in the open field is possible only from late spring to early autumn, and almost impossible in other seasons.

However, with the recent increase in income level, the demand for fresh horticultural crops is not limited to a specific season, but continues throughout the year, so facility horticulture that can produce horticultural crops regardless of the season has been developed.

In the case of facility horticulture in Korea, the cultivated area greatly increased, and with the introduction of various crop types, the number of cultivated items also increased.

In spite of such a short history, various cultivation technologies, including the control of specific environments within the facility, have been established, and the structure, materials, and auxiliary equipment of the facility to support this have been greatly developed. Facility horticulture can be said to be a future-oriented field, which is changing day by day thanks to this.

In such facility gardening, it is common to perform high-altitude work such as battery, harvest, harvest, and house installation, which accounts for more than 80% of the management work, by using a rail lift, a type of high-place work vehicle based on an electric power source, to do it alone.

However, the existing high-altitude work vehicle uses an engine as a power source to generate noise and vibration, and has a problem in that efficiency is reduced and it is difficult to apply to the Korean terrain with many slopes.

Therefore, research on the development of an eco-friendly, multi-purpose function other than transportation and high-altitude work that can be applied to the horticultural topography of facilities in Korea is being actively researched.

As an example, Korean Utility Model Registration No. 20-0252970 discloses a “rail working machine for agriculture”, and Korean Patent No. 10-0337434 discloses a “rail system for facility gardening”.

Such a conventional rail lift has several disadvantages as follows.

First, if a non-horizontal section occurs while the rail lift is running, the rail lift runs in an inclined state. There is a very high risk of a fall from a lift or, seriously, a fall from the top of a lift from a considerable height.

Second, in the case of a rail lift using a general motor as a driving source or a work platform elevating drive using a cylinder without a control function as a driving source, sudden start and sudden stop driving are performed during start and stop. It further increases the risk of an accident in which the worker falls or falls.

Third, there is a disadvantage in that the operator must continue to step on the pedal while applying the force to the foot during the running of the rail lift, which in turn puts strain on the ankles and the like, thereby aggravating the fatigue of the operator.

Fourth, in the case of the wheels for the rail lift driving, there are disadvantages in terms of structure, manufacturability, and manufacturing cost, such as the need to separately operate a wheel that rolls along the rail and a wheel that rolls on the ground.

Fifth, the ascending and descending speeds are set and operated slowly for the safety of the workers on the work bench when the rail lift is traveling and ascending and descending for work at height. There is a disadvantage of causing a decrease in workability.

Korea Registered Utility Model No. 20-0252970 Korean Patent Registration No. 10-0337434

The present invention was invented to solve the above problems.

Accordingly, the present invention provides a cylinder and BLDC driving motor that installs a horizontal sensor for detecting the horizontal state of the working scaffold of the rail lift, and controls the lifting speed of the working scaffold and the speed at the start and stop of the movement of the lift body. An object of the present invention is to provide an agricultural rail lift that allows the operator to perform safer work on the work platform by the application of

In addition, the present invention makes the movement of the rail lift more stable in general terrain by applying an integrated rail drive wheel and an external transfer wheel made of a resin-based material as a wheel means for the running of the rail lift. Another object of the present invention is to provide an agricultural rail lift for convenient maintenance such as rapid replacement according to wheel wear.

In order to achieve the above object, the present invention has the following configuration.

The present invention relates to an agricultural rail lift in which a lift body is moved on a rail or the ground, and a work platform on which an operator is boarded is raised and lowered by driving a link assembly installed in the lift body so that a desired operation can be performed. , a horizontal sensor installed on at least one side of the lift body or the working scaffold so that the operation of the lift enters the safe mode when the horizontal state of the working scaffold on which the operator is boarded is inclined beyond a specific degree; a transmission device in which a BLDC drive motor is installed in the lift body as a means for providing power for driving of the lift body, and a power transmission means is connected between the shaft of the BLDC drive motor and a wheel-side shaft of the lift body; It includes a load cell type scaffold switch installed on a working scaffold as a means for controlling the travel of the lift body, and driving a BLDC driving motor for driving of the lift body, and driving a link assembly for elevating the working scaffold A controller to control the; is configured, including.

Here, a cylinder is applied to the link assembly as a driving force providing means for elevating the working platform, and the cylinder is on the side of each front uplink member connected to the front end and the rear end of the rear uplink member among the link members constituting the link assembly, respectively. It is installed in a structure in which the cylinder body and the cylinder rod are connected to each other.

In addition, the controller includes a BLDC driving motor of the electric device and a driving driver for controlling the cylinder driving of the link assembly to be performed at initial slow driving and elevating, intermediate rapid driving and elevating, and final slow driving and elevating. Agricultural rail lift.

In order to achieve the above other object, the present invention has the following configuration.

The wheel consists of a rail driving wheel integrally formed at the tip of the shaft, and a wheel having a relatively larger diameter compared to the rail driving wheel, forming a coaxial structure at the end of the rail driving wheel, and detachably coupled to an external transfer wheel. do. At this time, the external transfer wheel of the wheel is made of a synthetic resin material.

As described above, the present invention has the following effects.

First, if the horizontal state of the work platform on which the operator is boarded due to the inclination state of the traveling path of the lift body or the driving state of the link assembly on the lift by the horizontal sensor becomes a sudden inclination state exceeding a certain degree, the operation of the lift is interrupted. By switching to the safety mode, there is an effect that can prevent safety accidents such as falling or falling of the operator.

Second, safer working conditions by slow and rapid driving when driving the lift body and driving the work platform by applying the BLDC driving motor and cylinder that can control the slow and rapid speed by the controller without a separate driving device There is an effect that can provide.

Third, when the rail lift is driven, forward and backward travel is made only by touching the foot on the load cell-type foot switch, so that the operator does not have any strain on the ankles, etc. It has the effect of remarkably lowering the fatigue of

Fourth, by applying the integrated rail drive wheel and external transfer wheel made of resin-based material such as MC material as a wheel means for the running of the rail lift, the overall structure of the rail lift can be simplified. It can reduce the cost and increase the durability of the wheel by improving the abrasion resistance.

Fifth, productivity is improved by minimizing the delay in working time by setting the rapid driving in the middle of driving as well as securing the safety of workers as the slow driving is set at the initial and late stages of driving by the adoption of the above-described BLDC driving motor and control of the cylinder. There is an effect that can be improved.

1 is a front view showing an agricultural rail lift according to an embodiment of the present invention.
Figure 2 is a plan view showing an agricultural rail lift according to an embodiment of the present invention.
Figure 3 is a side view showing an agricultural rail lift according to an embodiment of the present invention.
4 is a control configuration block diagram of an agricultural rail lift according to an embodiment of the present invention.
5 is a perspective view illustrating a rail drive wheel and an external transfer wheel of an agricultural rail lift according to an embodiment of the present invention.
Figure 6 is a front view showing a lifting operation state of the agricultural rail lift according to an embodiment of the present invention.

An embodiment of the present invention as described above will be described in detail with reference to the accompanying drawings.

1 to 3 are a front view, a plan view, and a side view showing an agricultural rail lift according to an embodiment of the present invention, and FIG. 4 is a block diagram of a configuration for driving control of an agricultural rail lift according to an embodiment of the present invention. am.

Referring to the drawings, the rail lift according to the present invention includes a lift body 11 capable of running using a wheel 10 that rolls along a rail 100 or the ground 110 .

The lift body 11 includes a main base 19 in the form of a square frame structure in which a link assembly 14 to be described later is installed, and the lower end of the link assembly 14 by being installed on the upper surface of the main base 19 . It has a structure including a sub-base 20 supporting the side.

The main base 19 of the lift body 11 includes a hydraulic device 21 that supplies hydraulic pressure to the cylinder 15, which will be described later, and a brushless (BLDC) capable of forward/reverse driving that provides power for the driving of the lift body 11. A direct current motor) driving motor 16 , a battery device 22 providing power, and the like are installed.

At this time, the BLDC driving motor 16 is applied to directly control the speed by the controller 40 to be described later, and to simplify the configuration compared to the configuration that requires a transmission device of a general motor separately. is one configuration. In addition, the battery device 22 can be electrically connected to the BLDC driving motor 16 , the controller 40 , and the like.

And, the wheel 10 is mounted on the bottom surface at four places on the main base 19 of the lift body 11, and accordingly, the rotation cycle is lifted by the wheel 10 by receiving power from the BLDC driving motor 16 side. The body 11 is able to travel on the rail 100 or the ground 110 .

In addition, the agricultural rail lift includes a work scaffold 13 as a means for the operator to get on when performing high-place work such as fields, harvesting, and harvesting.

The working scaffold 13 is a plate structure that can be lifted while being supported by the link assembly 14, and the working scaffold 13 has a safety fence as well as a driving and working scaffold for operating the lift body 11, etc. An operation box 23 is provided.

A controller 40 is built in the operation box 23, and the controller 40 is a means for controlling forward/backward travel of the lift body 11, and includes a foot switch 12 installed on the work platform 13 and The operation box 23, which is electrically connected and becomes the exterior of the controller 40, includes a power switch (not shown), a lift up/down switch (not shown), a forward travel or reverse travel selection switch (not shown), etc. Key input switches are installed, and it is natural that these switches are electrically connected to the controller 40 .

At this time, the scaffold switch 12 is a load cell-type switch that outputs an electrical signal proportional to the load, and has a non-protruding structure on the working scaffold 13 , that is, installed in a structure forming the same plane as the upper surface of the working scaffold 13 . do.

This load cell-type foot switch 12 is electrically connected to the operation box 23 through the cable 24, and operates ON/OFF depending on whether the operator's foot is on or not, and transmits the operation signal at this time to the controller 40 side. be able to provide

For example, when the operator puts his/her foot on the foot switch 12, the foot switch 12 at this time, that is, the load cell switch, is operated ON, and the output control of the operation box 23 that uses the signal at this time as an input is By this, the lift body 11 can be driven forward or backward while the BLDC driving motor 16 is driven in the forward or reverse direction.

In this way, by applying the foot switch 12 for the travel of the lift body 11, that is, the travel of the rail lifter as a load cell switch, the operator does not press the mechanical foot switch as hard as in the past with the foot, and drives only by lightly putting or taking off the foot. Alternatively, the operation for stopping can be easily performed, and consequently, there is an advantage in that the fatigue of the operator can be minimized even when working for a long time, such as not putting a strain on the operator's feet or ankles.

In particular, the controller 40 is configured to include a horizontal sensor 30 installed on at least one side of the lift body 11 and the work scaffold 13 . Such a horizontal sensor 30 is configured to allow the operation of the lift to enter the safe mode when the horizontal state of the working scaffold 13 on which the operator is boarded is inclined to exceed a specific degree.

At this time, when the horizontal state of the working scaffold 13 is inclined, when the rail 100 or the ground 110, which is the running path of the lift body 11, is not maintained in a horizontal state, the lift body 11 ), when the driving state of the link assembly 14 is not correct (damage to the hinge shaft connecting each link or damage to the link itself).

That is, as described above, when the horizontal state of the working platform 13 is inclined beyond a preset angle, the safety mode is to stop the operation of the lift body 11 and the link assembly 14 or the lift body 11 and the link. After stopping the driving of the assembly 14, it is possible to set various modes, such as slowly lowering the working platform 13 by driving the link assembly 14 at a slow speed.

In addition, the controller 40 operates at a slow speed in the initial stage when the lift body 11 is driven on the rail 100 or the ground 110 and when the work scaffold 13 is lifted by the link assembly 14. The BLDC drive motor 16 and each drive driver 41 of the cylinder 15 are provided to perform the rapid drive and lift, and the slow drive and lift at the end are provided.

Meanwhile, the agricultural rail lifter includes a link assembly 14 and a cylinder 15 as means for raising and lowering the working scaffold 13 .

The link assembly 14 is connected and installed between the lift body 11 and the working scaffold 13 , that is, connected between the upper surface of the sub-base 20 in the lift body 11 and the lower surface of the working scaffold 13 . It is installed and serves to elevate the work platform 13 while performing folding and unfolding operations.

To this end, the link assembly 14 includes a plurality of front uplink members 14a that take an upwardly inclined posture while looking to the front with respect to the forward running direction of the lift body 11 and a rearward inclined upward posture. It is composed of a combination of a plurality of rear uplink members 14b, and each of these front uplink members 14a and rear uplink members 14a has a front end, a rear end, and a middle end coupled in a pin structure in the vertical direction. As a result, it has a structure that forms an "X" shape of several stages and is combined.

Accordingly, the link assembly 14 is the respective front uplink member 14a and the rear uplink member 14a by the forward operation (cylinder rod withdrawal) and backward operation (cylinder rod reception) of the cylinder 15. It is unfolded or folded by the operation, and eventually the working scaffold 13 rises during the unfolding operation and the working scaffold 13 descends during the folding operation.

And, the front end of the uppermost rear uplink member 14b of the link assembly 14 is coupled to the bottom surface of the working scaffold 13 in a pin structure, and at the same time, the rear end of the uppermost front uplink member 14a is the upper roll 25 The bottom surface of the working scaffold 13 is contacted and supported through The silver is supported in contact with the upper surface of the sub-base 20 through the lower roll 26 .

Accordingly, during the unfolding and folding operations of the link assembly 14 , the rolling motion of each of the upper roll 25 and the lower roll 26 , for example, the upper roll 25 rolling along the bottom surface of the working scaffold 13 . ) and the rolling motion of the lower roll 26 that rolls along the upper surface of the sub-base 20, the unfolding and folding operations can be smoothly performed.

The cylinder 15 is a hydraulic cylinder and serves to provide power for unfolding and folding of the link assembly 14 .

The cylinder 15 is a front uplink member 14a of the upper side and a front end of the rear uplink member 14b respectively connected to the front end and the rear end of the rear uplink member 14b among the link members constituting the link assembly 14, respectively. It is disposed between the uplink members 14a, and the cylinder body of the cylinder 15 disposed in this way is coupled to the tip of the lower front uplink member 14a in a pin structure, and at the same time, the cylinder rod is coupled to the front uplink member 14a of the upper side. It is coupled to the rear end of 14a) in a pin structure.

In addition, the cylinder 15 is connected to the hydraulic device 21 side using a hydraulic hose 27 to receive hydraulic pressure.

Here, the work scaffold 13 performs a slow rising and falling, rapid rising and lowering operation as described above, and this operation is performed by a lift up/down switch (not shown) installed in the operation box 23 . It can be achieved through the selection operation and the operation stroke control of the cylinder 15 by the output of the hydraulic device 21 that is controlled by the controller (not shown).

In this way, by controlling the operation of the cylinder 15, by setting the slow transfer section at the initial and final stages and the rapid transfer section at the middle stage to control the lifting and lowering operation of the work platform, it is possible to secure the safety of the worker and shorten the work time. .

In addition, the agricultural rail lifter includes a BLDC driving motor 16 and a chain transmission 18 as a means for providing power for the driving of the lift body 11 .

The BLDC driving motor 16 is installed on the main base 19 of the lift body 11 to provide power to the wheel 10 side.

And, the chain transmission 18 includes a motor side sprocket 18a mounted on the shaft of the BLDC drive motor 16, a shaft side sprocket 18b mounted on the shaft 17 side, and the motor side sprocket ( 18a) and a chain 18c connected between the shaft side sprocket 18b.

Accordingly, when the operator puts his/her foot on the pedal switch 12 after selectively operating the forward travel or reverse travel selection switch (not shown) of the operation box 23, the BLDC drive motor 16 in the forward or reverse direction As the driving power is transmitted by the chain transmission 18, the shaft 17 is rotated, and in the end, the lift body 11 is driven forward or backward by the operation of the wheel 10 rotating together with the shaft 17. be able to

5 is a perspective view illustrating a rail drive wheel and an external transfer wheel of an agricultural rail lifter according to an embodiment of the present invention.

As shown in FIG. 5, the wheel 10 rolling along the rail 100 or the ground 110 during forward and backward travel of the lift body 11 includes a rail driving wheel 10a and an external transfer wheel 10b. In this case, the rail driving wheel 10a and the external transfer wheel 10b may be integrally combined.

Here, the rail driving wheel 10a is integrally formed at both ends of the shaft 17 and has a relatively large diameter compared to the shaft diameter and can be formed in a cylindrical shape of a metal material having a relatively small diameter compared to the external transfer wheel. .

In addition, the external transfer wheel 10b has a circular groove 28 concentrically formed in the center of one surface and is made in the form of a disk having a relatively large diameter compared to the rail driving wheel 10a. The external transfer wheel 10b is integrally coupled to the end of the rail driving wheel 10a by a bolt fastening structure.

For example, the flange 29 formed at the end of the rail driving wheel 10a is inserted and seated in the groove 28 of the external transfer wheel 10b, and in this state, the external transfer wheel 10b and the rail As the driving wheel 10a is fastened together by a plurality of bolts, the external transfer wheel 10b and the rail driving wheel 10a can be integrally coupled.

In particular, the external transfer wheel 10b is preferably made of MC nylon (Mono Cast Nylon) material having excellent wear resistance among synthetic resin materials.

Accordingly, the lift body 11 can travel forward and backward on the rail 100 using the rail driving wheel 10a, and travel forward and backward on the ground 110 using the external transfer wheel 10b. This becomes possible.

The state of use of the agricultural rail lifter configured in this way is as follows.

Figure 6 is a front view showing a lifting operation state of the agricultural rail lifter according to an embodiment of the present invention.

As shown in FIG. 6, when working on batteries, red fruits, harvesting, etc. for vegetables, fruit trees, flowers, etc. in horticultural facilities such as glass greenhouses or houses, rails (100) installed along the furrows between the ridges for agricultural rail lifters ), and then, the operator operates the operation box 23 while riding on the work platform 12 to drive the agricultural rail lifter forward or backward or raise and lower the operation is started.

First, during forward/backward driving, the operator operates the power switch (not shown) in the operation box 23 in which the controller 40 is embedded, and then selects and operates the forward driving or reverse driving selection switch (not shown) In , when the operator puts his/her foot on the foot switch 12, the foot switch 12 sensing the weight of the operator's foot or the pressure lightly pressed is turned ON, and the operation box 23 that uses the signal at this time as an input The output control enables the lift body 11 to travel forward or backward while the BLDC driving motor 16 is driven in the forward or reverse direction.

In this way, since the operator can easily operate for running or stopping only by lightly placing or releasing the foot on the foot switch, the operator's fatigue is also reduced during long-term work, such as not putting strain on the operator's feet or ankles. can be minimized.

Next, when ascending and descending, when the operator selectively operates the lift-up switch (not shown) or the down switch (not shown) after the ON operation of the power switch (not shown) in the operation box 23, the controller (not shown) City), the operating stroke of the cylinder 15 is controlled by the output of the hydraulic device 21 , and the link assembly 14 can be raised or lowered while being unfolded or folded.

At this time, as the cylinder 15 is controlled by a controller (not shown) in the operation box 23, it operates in a slow state at the beginning and at the end of the operation, and operates in a rapid state in the middle of the operation, so that the working scaffold 13 is also At the beginning/end of ascent or at the beginning/end of descent, it rises or falls slowly, and rises or falls rapidly during the mid-rise or mid-fall period.

In this way, by optimizing the lifting operation of the work platform by setting the slow transfer section of the initial and final stages and the rapid transfer section of the middle stage through the operation control of the cylinder 15, the work time can be greatly reduced while securing the safety of the worker. be able to

As described above, in the present invention, in plant horticulture that produces vegetables, fruit trees, flowers, etc., it is equipped with a load cell-type foot switch, an integrated rail drive wheel and an external transfer wheel, etc., and a cylinder type when working with batteries, red fruits, harvesting, etc. By providing a new rail lifter that operates in slow and rapid traverse using the elevator device of workability can be improved.

10: wheel 10a: rail drive wheel
10b: external feed wheel 11: lifter body
12: foot switch 13: work foot
14: lifting link assembly 14a: front uplink member
14b: rear uplink member 15: cylinder
16: BLDC drive motor 17: shaft
18: chain transmission 18a: motor side sprocket
18b: shaft side sprocket 18c: chain
19: main base 20: sub base
21: hydraulic system 22: battery system
23: operation box 24: cable
25: upper roll 26: lower roll
27: hydraulic hose 28: groove
29: flange 30: horizontal sensor
40: controller 41: drive driver

Claims (5)

The lift body 11 moves on the rail 100 or the ground 110, and the link assembly 14 installed on the lift body 11 is driven so that the work platform 13 on which the operator is boarded is raised and lowered. In the agricultural rail lift capable of carrying out a desired operation, the horizontal state of the working scaffold 13 installed on at least one side of the lift body 11 or the working scaffold 13 and on which the operator boarded is determined to a certain degree. a horizontal sensor 30 that allows the lift to enter a safe mode state when it is tilted excessively; A BLDC drive motor 16 is installed in the lift body 11 as a means for providing power for driving of the lift body 11, and the shaft of the BLDC drive motor 16 and the wheel of the lift body 11 ( 10) a power transmission means (18c) between the side shaft (17) is connected to the transmission device (18) and installed; A BLDC driving motor 16 for driving of the lift body 11, including a load cell-type scaffold switch 12 installed on the work scaffold 13 as a means for controlling the travel of the lift body 11 and a controller 40 for controlling the driving of the link assembly 14 for elevating the working platform 13;
A cylinder 15 is applied to the link assembly 14 as a driving force providing means for elevating the working platform 13 , and the cylinder 15 is a rear upward link member among link members constituting the link assembly 14 ( 14b) is installed in a structure in which the cylinder body and the cylinder rod are connected to the side of each front uplink member 14a connected to the front end and the rear end, respectively,
The controller 40 is the BLDC driving motor 15 of the electric device 18, and the cylinder 15 of the link assembly 14 is driven by initial slow movement and elevating, intermediate rapid moving and elevating, and late slow moving and elevating. Agricultural rail lift, characterized in that it comprises a drive driver (41) for controlling so as to be able to.
delete delete The method according to claim 1,
The wheel 10 includes a rail driving wheel 10a integrally formed at the tip of the shaft 17 and a wheel having a relatively larger diameter than the rail driving wheel 10a, and is coaxial to the end of the rail driving wheel 10a. Agricultural rail lift, characterized in that it consists of an external transfer wheel (10b) that is detachably coupled with the structure.
5. The method according to claim 4,
Agricultural rail lift, characterized in that the outer transfer wheel (10b) of the wheel (10) is made of a synthetic resin material.

Images