KR102494892B1 - Movable rail lifter - Google Patents

Abstract

Disclosed is a movable rail lifter. The disclosed movable rail lifter comprises: a frame including one or more front one-side rolling wheels and one or more front other-side rolling wheels at the front to be able to rotate freely and including one or more rear one-side rolling wheels and one or more rear other-side rolling wheels at the rear to be able to rotate freely; a first driving wheel connected to the frame to be able to rotate so as to be arranged between the front one-side rolling wheels and the rear one-side rolling wheels and receiving a driving force to forcibly rotate in both directions; a second driving wheel connected to the frame to be able to rotate so as to be arranged between the front other-side rolling wheels and the rear other-side rolling wheels and receiving a driving force to forcibly rotate in both directions; and a ground contact setting part for the guidance of maintaining or releasing the state of the first driving wheel being in contact with a driving surface that the front one-side rolling wheels and the rear one-side rolling wheels are in contact with, and maintaining or releasing the state of the second driving wheel being in contact with a driving surface that the front other-side rolling wheels and the rear other-side rolling wheels are in contact with. Therefore, provided is a movable rail lifter, wherein the movement and direction change of the lifter can be manipulated easily.

Description

Movable rail lifter {MOVABLE RAIL LIFTER}

The present invention relates to a movable rail lifter, and more particularly, includes a pair of rolling wheels provided on both sides of one side and the other side of a frame, respectively, and driving wheels that are independently driven between a pair of casters along the running direction. By doing so, it is possible to easily manipulate the movement and change of direction of the lifter, and the drive wheels are always in contact with the floor or rail in contact with a pair of rolling wheels or a pair of casters while driving. It relates to a movable rail lifter that facilitates the movement of a frame through rolling wheels or casters that are spaced apart from each other and freely rotated.

In general, crops (crops, 作物) refers to plants that dominate for the purpose of human use, and refers to food crops, craft crops, fodder crops, fertilizer crops, horticultural crops, etc. cultivated in rice fields.

Cultivation of these crops is done directly in the paddy field or using a plastic greenhouse, etc., and in the process of growing crops, it is frequently necessary to transport various types of loads, such as applying fertilizers such as compost or manure or transporting soil for opening the soil. it's happening

In this way, conventionally, in order to transport the load, a power conveyor such as a cultivator or a tractor and a non-powered conveyor such as a wheelbarrow have been used for transportation.

As a background art for the present invention, Korean Patent Publication No. 10-2002-0037304 (title of the invention: agricultural work vehicle, 2002.05.18: published) has been proposed.

The above technical configuration is a background art for helping understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Existing agricultural lifters have one or more auxiliary wheels and drive wheels arranged along the direction of travel on the floor or rail, and when deformation such as bending of the floor or rail occurs, the grip force of the drive wheels on the rail at the corresponding location of the rail is As a result of the weakening, there is a problem in that a driving defect occurs due to the driving force.

Therefore, there is a need to improve this.

The present invention has been made to improve the above problems, and a driving wheel that is independently driven between a pair of rolling wheels and a pair of casters provided on both sides of one side and the other side of the frame along the driving direction. It is an object of the present invention to provide a movable rail lifter capable of easily moving and changing directions of the lifter.

In the present invention, driving wheels are always in contact with the floor or rail in contact with a pair of rolling wheels or a pair of casters during driving to prevent poor driving, and free rotation by separating the driving wheels from the floor or rail when it is unnecessary such as stopping The purpose is to provide a movable rail lifter that facilitates the movement of the frame through rolling wheels or casters.

The present invention is an anti-slip pad applied to rolling wheels, casters, and driving wheels with elastic resin material, etc., to prevent slip during driving according to detachable encirclement, and to be replaced when worn, which is made of metal material for rigidity Its purpose is to provide a movable rail lifter that prevents deformation or abrasion of rolling wheels, casters, and driving wheels.

The movable rail lifter according to the present invention includes: one or more front one-side rolling wheels and one or more front other rolling wheels are freely rotatable at the front, and one or more rear one-side rolling wheels and one rear rolling wheel are freely rotatable at the rear, respectively. a frame provided; A first drive wheel rotatably connected to the frame to be disposed between the front one-side rolling wheel and the rear one-side rolling wheel, and forcibly rotated in both directions by receiving a driving force; a second driving wheel rotatably connected to the frame to be disposed between the other front rolling wheel and the other rear rolling wheel, and forcibly rotated in both directions by receiving a driving force; And maintaining or releasing the state in which the first driving wheel is in contact with the driving surface where the front one-side rolling wheel and the rear one-side rolling wheel are in contact, and the second driving wheel on the driving surface in contact with the front one-side rolling wheel and the rear one-side rolling wheel. It includes a ground setting unit for guiding the drive wheels to maintain or release the contact state.

The movable rail lifter according to the present invention is: one or more front side rails provided on one front side of the frame to guide linear movement of the frame along a pair of parallel running rails, and rolling along the corresponding running rails guide wheel; One or more front side rail guide wheels provided on the other front side of the frame and rolled along the corresponding running rail; One or more rear side rail guide wheels provided on one rear side of the frame and rolled along the corresponding running rail; And one or more rear other rail guide wheels provided on the other rear side of the frame and rolling along the corresponding running rail, wherein the ground setting unit contacts the front one side rail guide wheel and the rear one side rail guide wheel. A state in which the first driving wheel is in contact with the running rail is maintained or released, and a state in which the second driving wheel is in contact with the running rail in which the other front rail guide wheel and the other rear rail guide wheel are in contact is maintained or released. It is characterized by guidance.

The first driving wheel includes a first ground driving surface in contact with a driving surface together with the front one-side rolling wheel and the rear one-side rolling wheel; and a first rail guide surface having a phase difference from the first ground driving surface and contacting a corresponding running rail together with the front one-side rail guide wheel and the rear one-side rail guide wheel.

The second driving wheel may include a second ground driving surface contacting the driving surface together with the other front rolling wheel and the other rear rolling wheel when necessary; and a second rail guide surface having a phase difference from the second ground driving surface and contacting a corresponding running rail together with the other front rail guide wheel and the other rear rail guide wheel when necessary.

The ground setting unit may include a fixing bracket fixed to the frame so as to correspond to the first driving wheel and the second driving wheel; a pivoting bracket rotatably connected to the fixing bracket and rotatably connecting the corresponding first driving wheel and the second driving wheel; and a guide unit configured to set whether or not the rotation bracket rotates with respect to the fixing bracket, in order to guide the corresponding first driving wheel or the second driving wheel to maintain or release a state in contact with the set surface.

The guide unit may include a setting beam connected to the frame; And one side is connected to the setting beam or the frame, the other side is connected to the rotation bracket, and by applying a pulling force to the rotation bracket toward the setting beam, the corresponding first driving wheel or the second driving wheel It includes a tension generating member to maintain a state in contact with the set surface.

The setting beam is hingeably connected to the frame, and one side of the tension generating member is connected to the setting beam.

The guide part extends from the setting beam, moves along with the setting beam in a setting direction by an external force pressing, and pushes the pivoting bracket by the pushing force of the tension generating member, so that the first driving wheel or the second driving wheel corresponds to the first driving wheel. 2 A lever that allows the drive wheels to be spaced apart from the contact surface; A connecting beam connected to be fixed in position at a hinge portion of the setting beam; and a supporting beam having one side hinged to the connecting beam and the other side hingedly connected to the rotation bracket to support the rotation bracket rotated by manipulation of the lever.

The guide portion may include a plate extending from the frame; and a stopper hole formed in the plate along a set trajectory, accommodating the lever, and guiding the lever to be caught while maintaining a state operated by an external force.

The frame is characterized in that it includes a work table that is moved up and down while maintaining a horizontal position by an elevating link actuating member composed of a first link bar and a second link bar that are linked to each other while being arranged in a zigzag shape.

At least one of the first link bar, the second link bar, the first link bars, and the second link bars is finished with a mood bolt while being connected with a connecting pin so that external exposure is minimized.

As described above, the movable rail lifter according to the present invention is independently driven between a pair of rolling wheels and a pair of casters provided on both sides of one side and the other side of the frame along the traveling direction, unlike the prior art. By providing a driving wheel, it is possible to easily manipulate the movement and direction change of the lifter.

According to the present invention, driving wheels are always in contact with the floor or rail in contact with a pair of rolling wheels or a pair of casters during driving to prevent poor driving, and when it is not necessary such as stopping, the driving wheels are separated from the floor or rail to provide freedom. It is possible to facilitate the movement of the frame through rotating rolling wheels or casters.

The present invention is an anti-slip pad applied to rolling wheels, casters, and driving wheels with elastic resin material, etc., which can prevent slip during driving by detachably enclosing, and can be replaced when worn, so that it is made of metal for rigidity. It is possible to prevent deformation or abrasion of rolling wheels, casters and driving wheels.

1 is a side view of a lowered state of a movable rail lifter according to an embodiment of the present invention.
2 is a side view of an elevated state of a movable rail lifter according to an embodiment of the present invention.
3 is a front view of a movable rail lifter according to an embodiment of the present invention.
4 is a bottom view showing a state in which the movable rail lifter changes direction in place according to an embodiment of the present invention.
5 is an enlarged view of a main part of a side of a movable rail lifter according to an embodiment of the present invention.
6 is an enlarged view of the main part of the front of the movable rail lifter according to an embodiment of the present invention.
7 is an enlarged view of a main part showing an operating state of forcibly releasing the grounding of a driving wheel of a movable rail lifter according to an embodiment of the present invention.
8 is an enlarged view showing a main portion of a hinge portion of a lifting and lowering link operating member of a movable rail lifter according to an embodiment of the present invention.

Hereinafter, an embodiment of a movable rail lifter according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a side view of a movable rail lifter according to an embodiment of the present invention in a lowered state, FIG. 2 is a side view of a movable rail lifter according to an embodiment of the present invention in a raised state, and FIG. 3 is an embodiment of the present invention. It is a front view of the movable rail lifter according to the example.

4 is a bottom view showing a state in which the movable rail lifter changes direction in place according to an embodiment of the present invention.

5 is an enlarged view of the main part of the side of the movable rail lifter according to an embodiment of the present invention, and FIG. 6 is an enlarged view of the main part of the front of the movable rail lifter according to an embodiment of the present invention.

7 is an enlarged view of a main part showing an operating state in which a driving wheel of a movable rail lifter according to an embodiment of the present invention is forcibly released from the ground, and FIG. 8 is an elevation link of a movable rail lifter according to an embodiment of the present invention. It is an enlarged view of the main part showing the hinge part of the operating member.

1 to 8, a movable rail lifter 10 according to an embodiment of the present invention includes a frame 20, rolling wheels 32, 34, 36, 28, rail guide wheels 42, 44, 46, 48), a first driving wheel 50, a second driving wheel 60, and a ground setting unit 100.

The frame 20 rotatably connects the first driving wheel 50, the second driving wheel 60, the rolling wheels 32, 34, 36, 28 and the rail guide wheels 42, 44, 46, 48. or play a supporting role.

The frame 20 can be deformed into various shapes, and can be applied in various materials, but is made of a metal material for rigidity.

In particular, the frame 20 is provided with one or more front rolling wheels 32 and 34 freely rotatable on both sides of the front along the running direction, that is, the longitudinal direction L, and one or more rear rolling wheels on both sides of the rear Wheels 36 and 38 are provided to freely rotate.

In other words, the frame 20 is provided with one front side rolling wheel 32 rotatably on one front side along the forward running direction and the other front side rolling wheel 34 rotatably provided on the other front side.

In addition, the frame 20 is provided with a rear one-side rolling wheel 36 freely rotatable on one rear side along the forward running direction, and a front other rolling wheel 34 rotatably provided on the other rear side.

So, the front one-side rolling wheel 32 and the rear one-side rolling wheel 36 are provided on one side of the frame 20, and the other front rolling wheel 34 and the other rear rolling wheel 38 are provided on the other side of the frame 20. are provided in

For convenience, along the running direction of the frame 20, the front one-side rolling wheel 32 and the rear one-side rolling wheel 36 are arranged on a straight line, and the front other rolling wheel 34 and the rear other rolling wheel 38 are It is shown as arranged on a straight line.

At this time, the front one-side rolling wheel 32, the front other rolling wheel 34, the rear one-side rolling wheel 36, and the rear other rolling wheel 38 are shown as being provided one by one, and simultaneously on the running surface 3 of the floor. Make it possible to rotate the cloud by contacting it. In particular, the one front rolling wheel 32, the other front rolling wheel 34, the rear one rolling wheel 36, and the other rear rolling wheel 38 may be connected to the frame 20 so as to be able to change direction.

In addition, the frame 20 is provided with one or more front rail guide wheels 42 and 44 freely rotatable on both sides of the front along the running direction, that is, the longitudinal direction L, and one or more rear guide wheels 42 and 44 on both sides of the rear. The rail guide wheels 46 and 48 are provided to freely rotate.

In other words, the frame 20 is provided with a front one side rail guide wheel 42 freely rotatable on one front side along the forward running direction, and a front other side rail guide wheel 44 is provided with a free rotation on the front other side. .

In addition, the frame 20 is provided with a rear one-side rail guide wheel 46 freely rotatable on one rear side along the forward running direction, and a front other-side rail guide wheel 44 rotatably provided on the other rear side.

So, the front one-side rail guide wheel 42 and the rear one-side rail guide wheel 46 are provided on one side of the frame 20, and the front other rail guide wheel 44 and the other rear rail guide wheel 48 are frame ( 20) is provided on the other side.

For convenience, along the driving direction of the frame 20, the front one-side rail guide wheel 42 and the rear one-side rail guide wheel 46 are arranged on a straight line, and the front other rail guide wheel 44 and the other rear rail guide wheel (48) is shown as being arranged on a straight line.

In particular, along the driving direction of the frame 20, the front one-side rail guide wheel 42 and the front one-side rolling wheel 32 are not aligned but staggered, and the front other rail guide wheel 44 and the front other rolling wheel ( 34) are arranged staggered rather than straight.

At this time, the front one-side rail guide wheel 42, the rear one-side rail guide wheel 46, the front other rail guide wheel 44 and the rear other rail guide wheel 48 are shown as being provided one by one, and the running rail installed on the floor In contact with (5) at the same time, rolling rotation is possible. Therefore, the front one-side rail guide wheel 42 is located higher than the front one-side rolling wheel 32 in contact with the running surface 3 of the floor.

On the other hand, the first driving wheel 50 rotates on the frame 20 so as to be disposed between the front one-side rolling wheel 32 and the rear one-side rolling wheel 36 arranged on one side of the frame 20 along the driving direction. Possibly connected, and is forcibly rotated in one direction and the other direction by receiving driving force from the first driving motor 51.

In addition, the second driving wheel 60 rotates on the frame 20 so as to be disposed between the other front rolling wheel 34 and the other rear rolling wheel 38 arranged on the other side of the frame 20 along the driving direction. Possibly connected, and is forcibly rotated in one direction and the other direction by receiving driving force from the second driving motor 61.

Thus, the frame 20 has a front one-side rolling wheel 32, a front other rolling wheel 34, a rear one-side rolling wheel 36, a rear other rolling wheel 38, a first driving motor 51 and a second driving By rolling the motor 61 simultaneously in contact with the running surface 3 on the floor, it is possible to run forward or reverse or change direction. At this time, the first driving motor 51 and the second driving motor 61 may be fixedly mounted on the frame 20 .

In particular, when the first driving wheel 50 and the second driving wheel 60 are rotated in the same direction, the movable rail lifter 10 moves forward or backward. And, when the first driving wheel 50 and the second driving wheel 60 are rotated in different directions, the movable rail lifter 10 changes direction in one direction or in the other direction.

Alternatively, the frame 20 includes a front one-side rail guide wheel 42, a front other rail guide wheel 44, a rear one-side rail guide wheel 46, a rear other rail guide wheel 48, and a first drive motor 51 And the second drive motor 61 rolls while being in contact with the travel rail 5 at the same time, so that forward or reverse travel is possible.

The first driving motor 51 and the second driving motor 61 may be driven by receiving power from the battery 7 fixed to the frame 20 or an external power source.

And, the frame 20 may be provided with a work table 70 at the top.

In addition, the work table 70 may be provided to be able to move up and down while maintaining a horizontal position with respect to the frame 20 . Therefore, in the work table 70, a worker may work at high altitude to pick fruits such as fruit trees at a high position, or may load fruit trees or objects in a lowered state. Of course, the work table 70 can be transformed into various shapes.

At this time, the work table 70 may be provided with a handrail 72 to prevent workers from leaving during high-altitude work. The handrail 72 can be deformed into various shapes.

In particular, the work table 70 can be moved up and down with respect to the frame 20 by the elevating link operating member 80 and its height can be adjusted. The lifting and lowering link actuating members 80 are arranged in an 'X' shape that repeatedly intersects each other continuously and elongate to serve to elevate the work table 70 relative to the frame 20 .

At this time, the lifting and lowering link operating member 80 is automatically operated and controlled by the driving source 82 . At this time, the driving source 82 is composed of a hydraulic jack or cylinder, and a driving body for controlling the corresponding hydraulic jack or cylinder. Of course, the driving source 82 can be applied in various ways.

In addition, the drive source 82 is operated by receiving a signal wired or wirelessly by the operation switch 84 provided on the side of the work table 70, and raises or lowers the work table 70 through the elevating link operating member 80. .

At this time, the lifting and lowering link operating member 80 is composed of a first link bar 81 and a second link bar 83 which are linked in a zigzag shape and linked to cross each other. So, the elevating link actuating member 80 guides the elevating movement while maintaining the worktable 70 horizontally.

In addition, at least one of the first link bar 81 and the second link bar 83, the first link bar 81 and the second link bar 83 is connected to the connecting pin 85 to minimize exposure to the outside. It is finished with a mood bolt (87) while connected to.

For example, the corresponding first link bar 81 and the second link bar 83 each form a hole so that the connecting pin 85 can rotate with respect to the connecting pin 85 while being inserted.

In addition, the corresponding holes of the first link bar 81 and the second link bar 83 open to the outside are finished by screwing the mood bolt 87 to the inside.

At this time, when a plurality of corresponding first link bars 81 and second link bars 83 are disposed as a pair, the connecting pin 85 is connected to the corresponding plurality of first link bars 81 and the second link bar 81. It can be simultaneously inserted into the hole of the bar 83.

As the operation switch 84 is provided on the work table 70 or the handrail 72, the user can easily operate the driving source 82 while standing on the work table 70.

In particular, when the operating switch 84 and the driving source 82 are connected by wire, wires (not shown) may be wired through the inside of the lifting link operating member 80 connected to each other in the vertical direction.

In addition, the circumferential surface of the first driving wheel 50 is divided into a first contact driving surface 52 and a first rail guide surface 54 along the central axis direction. And, the circumferential surface of the second driving wheel 60 is divided into a second contact driving surface 62 and a second rail guide surface 64 along the direction of the central axis.

The first ground rolling surface 52 is in contact with the running surface 3 of the floor together with the front one rolling wheel 32 and the rear one rolling wheel 36, and the second ground rolling surface 62 is the front other rolling wheel ( 34) and the rear other rolling wheel 38 in contact with the running surface 3 of the floor. At this time, along the running direction of the frame 20, the first ground driving surface 52, the front one side rolling wheel 32 and the rear one side rolling wheel 36 are arranged on a straight line, and the second grounding driving surface 62 ) and the front other rolling wheel 34 and the rear other rolling wheel 38 are assumed to be arranged on a straight line.

Therefore, the first ground driving surface 52 receives the driving force of the first driving motor 51 while being in contact with the driving surface 3 together with the front one-side rolling wheel 32 and the rear one-side rolling wheel 36, and The movable rail lifter receives the driving force of the second driving motor 61 while the two-ground driving surface 62 is in contact with the driving surface 3 together with the front other rolling wheel 34 and the rear other rolling wheel 38. (10) becomes movable on the floor.

In addition, the first rail guide surface 54 is formed to have a phase difference from the first ground driving surface 52, and the corresponding running rail 5 with the front one-side rail guide wheel 42 and the rear one-side rail guide wheel 46 ) is tangent to In addition, the second rail guide surface 64 is formed to have a phase difference from the second ground drive surface 62, and the corresponding running rail 5 together with the other front rail guide wheel 44 and the other rear rail guide wheel 48 ) is tangent to

At this time, along the running direction of the frame 20, the first rail guide surface 54, the front one-side rail guide wheel 42, and the rear one-side rail guide wheel 46 are arranged on a straight line, and the second rail guide surface 64 ) and the other front rail guide wheel 44 and the rear other rail guide wheel 48 are arranged on a straight line.

So, the first rail guide surface 54 transmits the driving force from the first drive motor 51 while being in contact with the corresponding running rail 5 together with the front one-side rail guide wheel 42 and the rear one-side rail guide wheel 46 and transmits the driving force from the second drive motor 61 while the second rail guide surface 64 is in contact with the corresponding running rail 5 together with the front other rail guide wheel 44 and the rear other rail guide wheel 48 By receiving, the movable rail lifter 10 becomes movable on the running rail 5.

Of course, the first ground driving surface 52, the first rail guide surface 54, the second ground driving surface 62, and the second rail guide surface 64 can be deformed into various shapes.

As a result, the movable rail lifter 10 according to the present invention provides the driving surface 3 of the floor and the running rail ( 5) It is possible to move using the same power as a double use on the bed. In addition, it is possible to easily change the moving direction of the movable rail lifter 10 while the operator stands on the work table 70 .

At this time, the frame 20 may be provided with a footrest 90 so that the operator can easily go up and down the work table 70 . Scaffold 90 is applicable in a variety of shapes.

In addition, at least one of the rolling wheels 32, 34, 36, 38, the rail guide wheels 42, 44, 46, 48, the first driving wheel 50 and the second driving wheel 60 is an anti-slip pad. As 95 is detachably enclosed, occurrence of slip on the corresponding running surface 3 or running rail 5 is prevented.

The anti-slip pad 95 can be applied in a variety of ways, such as a resin material having elasticity to be replaced, and for convenience, the rolling wheels 32, 34, 36, 38, the rail guide wheels 42, 44, 46, 48, the first It is assumed that the drive wheel 50 and the second drive wheel 60 are wrapped.

In particular, the rolling wheels (32, 34, 36, 38), the rail guide wheels (42, 44, 46, 48), the first driving wheel 50 and the second driving wheel 60 are made of metal for rigidity. And, by being protected by the anti-slip pad 95, durability is increased.

On the other hand, when the running surface 3 of the floor is non-uniform, in a state where the front one-side rolling wheel 32 and the rear one-side rolling wheel 36 are in contact with the running surface 3, the first driving wheel 50 is on the running surface It is separated from (3) and ground failure may occur. Similarly, when the running surface 3 of the floor is non-uniform, the second driving wheel 60 moves along the running surface 3 in a state where the other front rolling wheel 34 and the other rear rolling wheel 38 are in contact with the running surface 3. It is separated from (3) and ground failure may occur.

Alternatively, when any one of the side-by-side running rails 5 is deformed and a part is depressed, in a state in which the front one-side rail guide wheel 42 and the rear one-side rail guide wheel 46 are in contact with the corresponding running rail 5, The second driving wheel 60 may be spaced apart from the corresponding running rail 5, resulting in poor grounding. Similarly, when the other one of the side-by-side running rails 5 is deformed and a part is depressed, in a state where the front other rail guide wheel 44 and the other rear rail guide wheel 48 are in contact with the corresponding running rail 5, The second driving wheel 60 may be spaced apart from the corresponding running rail 5, resulting in poor grounding.

To prevent this, a ground setting unit 100 is provided.

In addition, in a state where the first driving wheel 50 and the second driving wheel 60 are in contact with the running surface 3 of the floor, the movable rail lifter 10 has a front one side rolling wheel 32, a front other rolling wheel ( 34), a large pushing force is applied for easy direction change and movement using the rear one side rolling wheel 36 and the rear other rolling wheel 38.

In order to prevent this, the first driving wheel 50 and the second driving wheel 60 are operated to be separated from the driving surface 3, so that the front one side rolling wheel 32 and the front rolling wheel 32 that can freely rotate and freely change direction are operated to be separated from the driving surface 3. A grounding setting unit 100 is provided so that the movable rail lifter 10 can easily change direction and move only by rolling rotation of the wheel 34, the rear one side rolling wheel 36 and the other rear rolling wheel 38. .

That is, the ground setting unit 100 maintains or releases the state in which the first driving wheel 50 is in contact with the driving surface 3 where the front one-side rolling wheel 32 and the rear one-side rolling wheel 36 are in contact, and The rolling wheel 34 and the other rear rolling wheel 38 are guided to maintain or release the state in which the second driving wheel 60 is in contact with the driving surface 3 in contact.

In addition, the ground setting unit 100 maintains or releases the state in which the first driving wheel 50 is in contact with the driving rail 5 where the front one-side rail guide wheel 42 and the rear one-side rail guide wheel 46 are in contact, and , Maintaining or releasing the state in which the second driving wheel 60 is in contact with the running rail 5 where the other front side rail guide wheel 44 and the other rear side rail guide wheel 48 are in contact with each other.

The ground setting unit 100 includes a fixed bracket 110, a rotation bracket 120 and a guide unit 200.

The fixing bracket 110 is fixed to the frame 20 so as to correspond to the first driving wheel 50 and the second driving wheel 60, respectively. At this time, the fixing bracket 110 may be manufactured integrally with the frame 20 or may be detachably coupled to the frame 20 . Of course, each of the fixing brackets 110 can be applied in various shapes and materials.

Also, the rotation bracket 120 is rotatably connected to the fixing bracket 110 . That is, as the rotation bracket 120 is connected to the fixing bracket 110 by the rotation pin 122, it is possible to rotate in both directions based on the rotation pin 122. In addition, each of the rotation brackets 120 rotatably connects the corresponding first driving wheel 50 and the second driving wheel 60 . At this time, the rotation bracket 120 can rotatably connect the corresponding first driving wheel 50 and the second driving wheel 60 in various ways and can be transformed into various shapes. In particular, the first driving wheel 50 and the second driving wheel 60 rotate in the same direction together with the corresponding rotation bracket 120 .

In addition, the guide unit 200 guides the corresponding first driving wheel 50 or the second driving wheel 60 to maintain or release a state in contact with a set surface such as the running surface 3 or the running rail 5. For this purpose, it serves to set whether or not the rotation bracket 120 rotates with respect to the fixed bracket 110.

To this end, the guide unit 200 includes a setting beam 210 and a tension generating member 220 .

The setting beam 210 is connected to the frame 20 . At this time, the setting beam 210 can be deformed into various shapes.

In addition, the tension generating member 220 has one side connected to the setting beam 210 or the frame 20 and the other side connected to the rotation bracket 120. At this time, one set beam 210 may be provided and may be made of a length equal to the distance between the pair of rotation brackets 120 that are at least opposed in the direction of the width (W) of the frame 20, and the rotation bracket 120 ) may be provided with two to correspond to each.

For convenience, the setting beam 210 is provided to correspond to each of the pivot brackets 120, and one side is connected to the frame 20.

Therefore, the tension generating member 220 connects one setting beam 210 and the corresponding rotation bracket 120, and connects the other setting beam 210 and the corresponding rotation bracket 120. .

In particular, the tension generating member 220 applies a pulling force to the rotation bracket 120 toward the corresponding setting beam 210. Thus, the first contact driving surface 52 of the first driving wheel 50 can maintain a state in contact with the driving surface 3 at all times due to the corresponding pulling force of the tension generating member 220, and the second driving wheel The second contact driving surface 62 of 60 can always maintain a state in contact with the running surface 3 by the pulling force of the corresponding tension generating member 220.

Alternatively, the first rail guide surface 54 of the first driving wheel 50 can always maintain a state in contact with the running rail 5 due to the pulling force of the corresponding tension generating member 220, and the second driving wheel ( The second rail guide surface 64 of 60) can always maintain a state in contact with the running rail 5 by the pulling force of the corresponding tension generating member 220.

Accordingly, the tension generating member 220 can be applied in various ways such as compression coil springs and shock absorbers.

Thus, the movable rail lifter 10 can stably travel on the running surface 3 or the running rail 5.

In addition, the first driving wheel 50 and the second driving wheel 60 may be spaced apart from the corresponding running surface 3 or running rail 5 if necessary according to the manipulation of the guide unit 200 .

In this case, only the rolling wheels 32, 34, 36, and 38 are in contact with the running surface 3, or only the rail guide wheels 42, 44, 46, and 48 are in contact with the running rail 5. , The movable rail lifter 10 can be moved by an external force that is pushed with relatively little force.

To this end, each of the setting beams 210 is hingeably connected to the frame 20, and one side of the tension generating member 220 is connected to the corresponding setting beam 210.

In particular, a pair of setting beams 210 are connected to the frame 20 by a pivot pin 212 while overlapping corresponding edges. Thus, each of the pair of setting beams 210 is individually rotatable with respect to the pivot pin 212 .

And, the guide part 200 includes a lever 230, a connecting beam 240 and a supporting beam 250.

The lever 230 has one side extending from the other side of each of the setting beams 210 hingeably connected to the frame 20 by the pivot pin 212 . The lever 230 may be the setting beam 210 itself or may be detachably coupled to the setting beam 210 . Of course, the lever 230 may be formed in various shapes.

In addition, the lever 230 is moved along with the setting beam 210 in the setting direction by the pressing external force. In conjunction with this, the tension generating member 220 made of a set length while being connected to the setting beam 210 pushes the corresponding rotation bracket 120.

As a result, the first driving wheel 50 is interlocked with the corresponding rotation bracket 120 and rotated to the outside of the frame 20 while being spaced apart from the running surface 3 or the running rail 5 at a predetermined distance, and the second driving wheel ( 60) is interlocked with the corresponding rotation bracket 120 and is rotated to the outside of the frame 20 while being spaced apart from the running surface 3 or the running rail 5.

The connecting beam 240 is connected to the hinge portion of the setting beam 210, that is, the pivot pin 212 so as to be fixed in position, and extends downward. Of course, the connecting beam 240 can be applied in various shapes.

In addition, one side of the supporting beam 250 is hinged to the connecting beam 240 through the first hinge pin 252 and the other side is hinged to the rotation bracket 120 through the second hinge pin 254.

So, when the lever 230 moves in the setting direction together with the setting beam 210 by the pressing external force, the corresponding rotation bracket 120 is rotated to the outside of the frame 20, and in conjunction therewith, the supporting beam 250 It rotates downward based on the first hinge pin 252 and supports the rotated rotation bracket 120 . Thus, the pivoting bracket 120 can stably maintain a rotated state by the support of the corresponding supporting beam 250 .

In particular, the supporting beams 250 are provided as a pair so as to be hingedly connected to the pair of pivot brackets 120, respectively, and the pair of supporting beams 250 have the same side edges overlapped, and the first hinge pin 252 ) It can be hinged to the connecting beam 240 by.

Of course, the supporting beam 250 can be deformed into various shapes.

In addition, the state in which the lever 230 is pressed by an external force may be maintained.

To this end, the guide part 200 includes a plate 260 and a stopper hole part 270 .

The plate 260 extends from both sides in the direction of the horizontal width (W) of the frame 20 . In this case, the plate 260 may be the frame 20 itself, or may be integrally or detachably coupled to the frame 20 . The plate 260 can be applied in various shapes.

In addition, the stopper hole 270 is formed along a set trajectory in each of the plates 260 and accommodates the lever 230 . Therefore, after the lever 230 is moved along the stopper hole 270 by an external force and is caught at the set position of the stopper hole 270, the lever 230 maintains a downwardly operated state.

In addition, when the user moves the lever 230 in the opposite direction from the stopper hole 270, the first driving surface 52 of the first driving wheel 50 comes into contact with the driving surface 3, and the second driving wheel The second ground running surface 62 of 60 comes into contact with the running surface 3.

Alternatively, when the user moves the lever 230 in the opposite direction from the stopper hole 270, the first rail guide surface 54 of the first driving wheel 50 comes into contact with the running rail 5, and the second driving wheel ( The second rail guide surface 64 of 60) comes into contact with the running rail 5.

Accordingly, when power is not applied to the first drive motor 51 and the second drive motor 61, the movable rail lifter 10 is stably fixed in position. In addition, when power is applied to the first drive motor 51 and the second drive motor 61, the movable rail lifter 10 can move along the running surface 3 or the running rail 5 with motor power. .

At this time, the lever 230 may be moved in an upward direction opposite to a downward direction, and then caught at a corresponding position of the stopper hole 270 to be fixed in position.

The present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent other embodiments. will understand Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: mobile rail lifter 20: frame
32: front one side cloud wheel 34: front other side cloud wheel
36: rear one side cloud wheel 38: rear other side cloud wheel
42: front one rail guide wheel 44: front other rail guide wheel
46: rear one side rail guide wheel 48: rear other side rail guide wheel
50: first driving wheel 51: first driving motor
52: first grounding surface 54: first rail guide surface
60: second drive wheel 61: second drive motor
62: second grounding surface 64: second rail guide surface
70: work table 80: lifting and lowering link operating member
100: ground setting unit 110: fixing bracket
120: rotation bracket 200: guide
210: setting beam 220: tension generating member
230: lever 240: connecting beam
250: supporting beam 260: plate
270: stopper hole

Claims (8)

A frame having at least one front one-side rolling wheel and the other front rolling wheel freely rotatable at the front and at least one rear one-side rolling wheel and the other rear rolling wheel at the rear, respectively, to be freely rotatable; A first drive wheel rotatably connected to the frame to be disposed between the front one-side rolling wheel and the rear one-side rolling wheel, and forcibly rotated in both directions by receiving a driving force; a second driving wheel rotatably connected to the frame to be disposed between the other front rolling wheel and the other rear rolling wheel, and forcibly rotated in both directions by receiving a driving force; And maintaining or releasing the state in which the first driving wheel is in contact with the driving surface where the front one-side rolling wheel and the rear one-side rolling wheel are in contact, and the second driving wheel on the driving surface in contact with the front one-side rolling wheel and the rear one-side rolling wheel. Including a ground setting unit for guiding the driving wheel to maintain or release the contact state,
The ground setting unit may include a fixing bracket fixed to the frame so as to correspond to the first driving wheel and the second driving wheel; a pivoting bracket rotatably connected to the fixing bracket and rotatably connecting the corresponding first driving wheel and the second driving wheel; And a guide unit for setting whether or not the rotation bracket rotates with respect to the fixing bracket in order to guide the corresponding first driving wheel or the second driving wheel to maintain or release a state in contact with a set surface,
The guide unit may include a setting beam connected to the frame; and
One side is connected to the setting beam or the frame, the other side is connected to the rotation bracket, and a pulling force is applied to the rotation bracket toward the setting beam, so that the corresponding first driving wheel or the second driving wheel is set. A movable rail lifter comprising a tension generating member to maintain a state in contact with the surface.
According to claim 1,
One or more front side rail guide wheels provided on one front side of the frame to guide the linear movement of the frame along a pair of parallel running rails and rolling along the corresponding running rail;
One or more front side rail guide wheels provided on the other front side of the frame and rolled along the corresponding running rail;
One or more rear side rail guide wheels provided on one rear side of the frame and rolled along the corresponding running rail; and
At least one rear side rail guide wheel provided on the other rear side of the frame and rolling along the corresponding running rail;
The contact setting unit maintains or releases a state in which the first driving wheel is in contact with the running rail in which the front one-side rail guide wheel and the rear one-side rail guide wheel are in contact, and guides the contact between the other front side rail guide wheel and the other rear rail. A movable rail lifter, characterized in that for maintaining or releasing a state in which the second driving wheel is in contact with the driving rail in contact with the guide wheel.
According to claim 2,
The first driving wheel includes a first ground driving surface contacting the driving surface together with the front one-side rolling wheel and the rear one-side rolling wheel when necessary; and
A first rail guide surface having a phase difference from the first ground driving surface and contacting a corresponding running rail together with the front one-side rail guide wheel and the rear one-side rail guide wheel,
The second driving wheel may include a second ground driving surface contacting the driving surface together with the other front rolling wheel and the other rear rolling wheel when necessary; and
A movable rail lifter comprising a second rail guide surface having a phase difference from the second ground driving surface and contacting a corresponding running rail together with the front other rail guide wheel and the rear other rail guide wheel.
delete delete According to claim 1,
The setting beam is hingeably connected to the frame,
One side of the tension generating member is connected to the setting beam,
The guide part extends from the setting beam, moves along with the setting beam in a setting direction by an external force pressing, and pushes the pivoting bracket by the pushing force of the tension generating member, so that the first driving wheel or the second driving wheel corresponds to the first driving wheel. 2 A lever that allows the drive wheels to be spaced apart from the contact surface;
A connecting beam connected to be fixed in position at a hinge portion of the setting beam; and
A movable rail lifter comprising a supporting beam having one side hinged to the connecting beam and the other side hingedly connected to the rotation bracket to support the rotation bracket rotated by manipulation of the lever.
The method of claim 6, wherein the guide unit,
a plate extending from the frame; and
A movable rail lifter characterized in that it includes a stopper hole formed in the plate along a set trajectory, accommodating the lever, and guiding the lever to be caught while maintaining a state operated by an external force.
According to claim 1,
The frame is arranged in a zigzag shape and has a work table that is moved up and down while maintaining a level by an elevating link actuating member composed of a first link bar and a second link bar linked to each other crosswise,
At least one of the first link bar, the second link bar, the first link bars, and the second link bars is connected with a connecting pin to minimize exposure to the outside and is finished with a mood bolt. rail lifter.

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