KR102623226B1 - Caterpillar type foldable forklift with center of gravity movement - Google Patents

Abstract

This technology is about a foldable forklift that prevents the forklift from tilting during the process of picking up cargo by remote control, maintains durability when moving or rotating, and maintains a slim shape, making it easy to store or mount on a means of transportation. In more detail, it includes a car body part on which a basket equipped with a remotely adjustable control unit is mounted, a pair of driving parts rotatably provided on both sides of the car body part, and a pair of driving parts that are movable with the car body part to be located in front of the driving part. It is installed and includes a transport part that picks up cargo through control of the control unit, wherein the car body part is maintained horizontally so as not to tilt in the direction of the transport part due to the weight of the cargo picked up by the transport part through control of the control unit. It is characterized in that it includes horizontal maintenance means for moving the basket so that the basket can be moved.

Description

Caterpillar type foldable forklift with center of gravity movement}

This technology is about a foldable forklift that prevents the forklift from tilting during the process of picking up cargo by remote control, maintains durability when moving or rotating, and maintains a slim shape, making it easy to store or mount on a means of transportation. will be.

In general, forklifts are special industrial vehicles used to transport loads or cargo, and have recently been widely used throughout the industry, such as when unloading or transporting various loads during the cargo transport process.

1 and 2 show an example of a typical four-wheeled forklift, which is equipped with a pair of front wheels 13 and rear wheels 12, and has a mast assembly (Mast assembly) at the front of the vehicle body 1. 2) is installed, and a power source such as an engine or battery is provided inside the vehicle body 1.

In addition, the mast assembly (2) is provided with a mast rail (3) arranged in the vertical direction and a carriage (4) that can be raised and lowered along the mast rail (3).

In addition, the mast assembly 2 is provided to be slightly tilted toward the driver's seat by a tilt actuator (Tilt Cylinder) 10 for safety during unloading work.

Additionally, the carriage 4 is raised and lowered by a lift chain 6, and a pair of forks 7 are mounted on the front of the carriage 4 to lift the load.

In addition, a pair of forks (7) are provided so that their width can be adjusted left and right, and a back rest (5) is installed on the upper part to support the load.

In addition, a driver's seat (9) is provided on the upper part of the vehicle body (1), and an overhead guard (8) is installed on the upper side of the driver's seat (9) to protect the driver. A counter weight (11) is provided at the rear to balance the center of gravity according to the weight of the cargo.

However, the forklift according to the prior art configured as described above is bulky and heavy, so it is difficult to load it on a cargo vehicle, so there is the inconvenience of having to slowly move to the place where the cargo is loaded using its own power separately from the cargo vehicle. , In this case, due to the characteristics of forklifts, which have a significantly slower driving speed compared to general vehicles, their arrival time is inevitably later than that of cargo vehicles, resulting in a delay in unloading the cargo.

Accordingly, Republic of Korea Patent Publication Nos. 10-1423842 and 10-1569874 disclose a technology that can be used to unload cargo by folding a forklift and carrying it on a cargo vehicle while minimizing its volume.

However, this is simply a structure that reduces the volume by folding the fork and mast of the forklift, so not only does it have limitations in reducing the overall length of the forklift, but it is also very difficult to balance the vehicle's center of gravity according to the weight of the cargo. It is difficult, and when the center of gravity of the vehicle is shifted forward due to the load of heavy objects lifted by the fork during unloading work, there is a problem that the other side can easily be lifted or tipped over.

In addition, conventional folding forklifts have good safety because they are so-called rear-wheel steering using a steering handle, but the turning radius is large, making it difficult to work in narrow places and reducing work efficiency, and the height of the vehicle body is inevitably very high due to the steering device. There are structural limitations.

In order to solve the above-described conventional problems, another conventional technology, as shown in FIG. 3, is disclosed in Domestic Patent No. 10-1832146 (announcement date: 2018.02.26.). Looking at its configuration, the floating axle This installed front car body, a rear car body connected to the front car body by a joint and equipped with a driving axle and a counter weight, and installed between the front car body and the rear car body to expand and contract between the front car body and the rear car body. a steering actuator that controls the direction of movement by bending, a carriage installed in the front of the front car body, a lower part of which is connected to the carriage by a hinge joint so that it can be folded relative to the carriage, a fork provided for lifting a load, and the front The car body and the lower part are connected by a hinge joint and can be folded, and a mast that simultaneously raises and lowers the fork and the carriage according to the operation of a hydraulic device is installed on the front car body to erect or lie down the carriage and the mast through expansion and contraction actions. It is characterized by including at least one folding actuator.

However, in the case of the above-described prior art, there is a problem that causes a safety accident not only to the driver of the forklift but also to workers around it due to the phenomenon in which the rear body 20 is lifted due to the weight of the heavy object during the process of lifting the heavy object. It happens.

In addition, when lifting a heavy object such as a heavy load or cargo, there is an advantage that the center of gravity can be freely moved to maintain the stability of the vehicle body by balancing the weight of the heavy object without being biased in any direction. However, to maximize this advantage, the cargo must be installed. The front car body 10 and the rear car body 20 are connected only by a joint J, which is the concept of a rotation axis, so the mechanical load generated during rotation is considerable, making it necessary to perform maintenance due to damage to the joint. Problems arise.

Domestic registered patent No. 10-1423842 (announcement date: 2014.07.21.) Domestic registered patent No. 10-1569874 (announcement date: 2015.11.11.) Domestic Published Patent No. 10-2016-32898 (Publication date: 2016.03.25.)

In order to solve the above-described conventional problems, the purpose of the present invention is to provide a forklift that can prevent safety accidents as well as stable loading of cargo by preventing the rear of the vehicle body from lifting during the process of lifting cargo.

Another purpose of the present invention is to provide a remotely controllable foldable forklift that can prevent the body of the forklift from being damaged due to mechanical load received during the process of easily lifting heavy cargo and moving it freely.

In order to solve the above-described technical problem, a caterpillar-type folding forklift capable of moving the center of gravity according to the present invention includes a car body 100 on which a basket 113 equipped with a remotely adjustable control unit 400 is mounted, and the car body A pair of driving units 200 rotatably provided on both sides of the unit 100 and installed to be movable with the vehicle body 100 so as to be located in front of the driving units 200, and cargo ( It includes a transport unit 300 that picks up C), and the vehicle body unit 100 is controlled by the control unit 400 due to the weight of the cargo (C) picked up by the transport unit 300. It is characterized by including horizontal maintaining means 140 for moving the basket 113 so that the vehicle body 100 can be maintained horizontally without being tilted in the direction 300).

In addition, the horizontal maintaining means 140 is connected to the rear side of the driving unit 200 and is mounted on the upper part of the guide member 141 and the guide member 141 into which the basket 113 is movably inserted in the forward and backward directions. It is preferable that the basket 113 includes a power cylinder 142 that provides power to move the basket 113 by the control unit 400.

In addition, the guide member 141 is formed on both sides of the moving plate 143 and the moving plate 143 on which the basket 113 is movably seated and has a first roller 143a at the lower portion of the basket. (113) The second roller 113a formed on the outer surface is rotatably inserted, and includes a moving guide 145 on which the power cylinder 142 is mounted at the top, and the basket (113a) is inside the moving plate 143. A storage space portion 143b that is opened and closed by the movement of 113) is formed, and a stopper 143c is preferably installed on the upper surface to limit the moving distance of the moving basket 113.

In addition, the driving unit 200 rotates the car body 100 forward and backward as well as 360 degrees according to the rotation direction of the caterpillar 210 in the form of a caterpillar, and the transport unit 300 is a pair of the driving units. It is preferable that it is folded parallel to the car body 100 so as to be positioned between (200) or used vertically in front of the car body 100 when picking up cargo (C).

In addition, the driving unit 200 includes a caterpillar 210 rotatably provided to surround the main wheel 215 and the outer surface of the sprocket 221, and a drive coupled to the sprocket 221 to rotate the caterpillar 210. A motor 220, a sub-wheel 230 rotatably coupled to the car body 100 to face the caterpillar 210, and a sub-wheel 230 positioned between the sub-wheel 230 and the sprocket 221. A rear bracket 240 installed to connect to the unit 100, and a front bracket 250 located between the sub wheel 230 and the main wheel 215, but inserted so that the main wheel 215 can move in the forward and backward directions. ) and an elastic member 260 mounted on the front bracket 250 so that the main wheel 215 inserted into the front bracket 250 can move by elastic force.

In addition, the driving unit 200 further includes a cover plate 270, and the cover plate 270 is connected to the rear bracket 240 and the front bracket 250 to prevent interference with the rotation of the caterpillar 210. It is preferably fastened with, and a long hole 271 is formed on the outer surface into which the main wheel 215 is movably inserted.

In addition, at least one of the rear bracket 240 or the front bracket 250 is further provided with a roller (R) rotatably coupled to the inner surface of the caterpillar 210, and the front bracket 250 is a main wheel. An insertion groove 251 is formed into which the movable bracket 217 rotatably coupled to (215) is movably inserted, and the elastic member 260 allows the movable frame 311 and the front bracket 250 to be movably inserted. It is desirable to install them so that they are connected to each other.

In addition, the elastic member 260 includes an extension body 261 protruding and connected to the upper surface of the movable bracket 217, a connection body 263 provided on the front bracket 250 to face the extension body 261, and An adjustment bolt 265 is formed in the shape of a column with a thread formed on the outer surface and is fixed to the extension body 261 by penetrating the connecting body 263, and adjusting the adjusting bolt 265 so that one side can be supported on the outer surface of the connecting body 263. The elastic body 267 inserted through the outside of the bolt 265 and the length of the elastic body 267 can be adjusted to vary, as well as the adjustment bolt (265) so that the adjustment bolt 265 can be fixed to the extension body 261. 265) It includes a plurality of adjustment nuts 269 that can be screwed to the outer surface, and the adjustment nut 269 is a first nut that is screwed to the adjustment bolt 265 so as to face the outer surface of the extension body 261. (269a), it is preferable to include a second nut (269b) screwed to the adjustment bolt (265) to support the other side of the elastic body (267).

In addition, the transport unit 300 includes a moving member 310 that is slidably coupled to the vehicle body 100 in the front and rear direction, and is rotated by the moving member 310 to stand vertically or is connected to the moving member ( 310), a support member 320 with a lifting cylinder 321 inside, and a pair of pick-up bars 331 for picking up cargo C are rotatably mounted on the outer surface. It is preferable to include a lifting member 330 that moves up and down so that the cargo C can be raised and lowered by the cylinder 321.

In addition, the moving member 310 includes a moving frame 311 provided with a roller (R) rotatably inserted into the vehicle body 100 and the moving frame 311 to rotate the support member 320. It is preferable to include a pair of stand cylinders 313 provided in.

In addition, the car body 100 is formed with a moving groove 111 into which the carrying part 300 can be inserted forward and backward, as long as the driving part 200 is installed at a position symmetrical to the moving groove 111. A pair of car body frames 110 and a connecting frame 120 that connects the pair of car body frames 110 to each other to provide a space for the transport unit 300 to fold or move forward and backward, and the transport unit ( 300) includes a forward and backward cylinder 130 that provides power to move forward and backward, and the horizontal maintaining means 140 on which the basket 113 is movably mounted is installed on the rear side of the connecting frame 120. It is desirable.

According to the present invention, unlike the prior art, the forklift is adjusted to maintain levelness during the cargo pickup process, enabling pickup without safety accidents, and the rotation of the forklift while picking up the cargo is limited to a limited number of times. It is expected that the pair of driving parts will rotate in opposite directions, allowing the forklift to rotate without mechanical load.

In addition, unlike in the past, the carrying part is arranged parallel to the car body by means of a stand cylinder, which has the effect of providing convenience of storage and ease of loading by means of movement.

1 and 2 are diagrams showing a conventional forklift.
Figure 3 is a diagram showing a caterpillar-type folding forklift capable of moving the center of gravity to which the body part is applied according to the first embodiment of the present invention.
Figure 4 is a plan view of Figure 3.
Figure 5 is a view showing the car body of Figure 3.
Figure 6 is a diagram illustrating the operational relationship of the horizontal maintenance means in Figure 3.
Figure 7 is a diagram showing a caterpillar-type folding forklift capable of moving the center of gravity to which the body part is applied according to the second embodiment of the present invention.
Figure 8 is an exploded perspective view of Figure 7.
9 to 11 are diagrams showing a driving unit for FIG. 7.
Figure 12 is an operational relationship diagram of the driving unit in Figure 7.
Figure 13 is a view showing the transport part of Figure 7.
Figures 14 to 16 are diagrams showing the operational relationship of a caterpillar-type folding forklift capable of moving the center of gravity relative to Figure 7.
Figure 17 is a diagram illustrating a folded state of a caterpillar-type folding forklift capable of moving the center of gravity relative to Figure 7.

Hereinafter, various embodiments will be described in more detail with reference to the attached drawings. The embodiments described herein may be modified in various ways. Specific embodiments may be depicted in the drawings and described in detail in the detailed description. However, the specific embodiments disclosed in the attached drawings are only intended to facilitate understanding of the various embodiments. Therefore, the technical idea is not limited to the specific embodiments disclosed in the attached drawings, and it should be understood that all equivalents or substitutes included in the spirit and technical scope of the invention are included.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but these components are not limited by the above-mentioned terms. The above-mentioned terms are used only for the purpose of distinguishing one component from another.

In this specification, terms such as “comprise” or “have” are intended to indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof. When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

In addition, when describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof is abbreviated or omitted.

Hereinafter, a caterpillar-type folding forklift capable of moving the center of gravity (hereinafter simply referred to as a 'forklift') according to the present invention will be described in detail with reference to the attached drawings.

Prior to the explanation, the cargo (C) described below refers to a typical pallet on which goods can be placed by forming a space into which the pickup bar 331, which will be described later, can be inserted, and the gist of the present invention is explained. Detailed explanations will be omitted to avoid confusion.

First, as shown in FIGS. 3 and 4 or 7 and 8, the forklift 1A and 1B according to the present invention largely includes a body part 100, a drive part 200, a transport part 300 and their components. It includes a control unit 400 that controls one or more of the following, and the control unit 400 is remotely controlled by a controller (R) carried by an operator, but is not limited to this.

In more detail, the vehicle body 100 is equipped with a driving unit 200 and a transport unit 300, which will be described later, and is configured to be controlled by a controller R constituting the control unit 400. The first embodiment (see FIGS. 3 to 6) includes a car body frame 110, a connecting frame 120, a forward and backward cylinder 130, and a horizontal maintaining means 140, or the horizontal maintaining means 140 is omitted. Any one of the second embodiments (see FIGS. 7 and 8) may be applied.

For example, as shown in FIGS. 5, 6, 8, and 9, the car body frame 110 is provided as a pair so that it can be placed on both sides of the connecting frame 120, and the control unit 400 is mounted at the rear. An openable and openable basket 113 in the shape of a box is installed.

At this time, the pair of car body frames 110 are formed with a moving groove 111 in the longitudinal direction for insertion so that the moving member 310 constituting the carrying unit 300 can slide in the front and rear direction in the direction facing each other. It is desirable to be

In addition, inside the basket 113, in addition to the control unit 400, a component capable of providing the air pressure or hydraulic pressure necessary for the operation of the cylinder used in the present invention may be additionally installed.

In addition, the connection frame 120 is molded to have the shape of a plate as a whole, and both sides are fastened to the car body frame 110 to form a structure that allows the car body 100 to move and rotate by a pair of driving parts 200. satisfy.

The volume of the connection frame 120 is transported by the forward and backward cylinder 130 in a state in which the moving member 310 is folded parallel to the connection frame 120 by the stand cylinder 313 constituting the transport unit 300. The entire part 300 has a volume that ensures a space that can be easily inserted into the pair of car body frames 110 (see FIG. 18).

As a result, the slim shape of the forklift 1B is realized, making it easy to mount a moving means (not shown) such as a truck.

In addition, as shown, the forward and backward cylinders 130 are located at the top of each car body frame 110, and a rod of variable length is fastened to the transport unit 300 to move the transport unit through the edger of the control unit 400. (300) provides power to move in the forward and backward directions.

At this time, it is preferable that the transport unit 300, which moves by the forward and backward cylinder 130, is installed to enable slide movement on the upper side of the connection frame 120.

In addition, as shown in FIGS. 4 to 6, the horizontal maintenance means 140 lifts the basket 113 due to the weight of the cargo C when picking up the cargo C by the transport unit 300. To prevent the picked up cargo (C) from being separated due to the tilt of the transport unit (300), the center of gravity of the forklift (1A) of the present invention is maintained horizontal at all times through control of the control unit (400). It includes a guiding member 141 and a power cylinder 142.

The guide member 141 is configured to provide a space in which the basket 113 can move stably and includes a moving plate 143 and a moving guide 145.

As shown, the moving plate 143 can be molded into the shape of a hollow box using metal materials, etc., and is connected to the driving unit 200 through the above-described connecting frame 120 to be movable. do.

To this end, a plurality of first rollers 143a are formed on the lower part of the moving plate 143 to provide convenience of movement.

An opening that is opened and closed by moving the basket 113 is formed on the upper surface of the moving plate 143 on which the basket 113 is movably seated, and another tool ( It is also possible to store tools and use it as a tool box.

In addition, one or more stoppers 143c may be further formed on the upper part of the moving plate 143 to limit the moving distance of the basket 113 moving in the front-back direction.

The moving guide 145 is configured to help the basket 113 move stably without shaking when moving on the upper part of the moving plate 143. As shown, the moving guide 145 has a predetermined length on both sides of the upper part of the moving plate 143. They are installed in pairs.

Inside the moving guide 145, a guide groove 145a is formed in the longitudinal direction, and the second roller 113a provided on the outer surface of the basket 113 is rotatably inserted through the guide groove 145a to move the moving guide. The basket 113 moves stably in the front-back direction along 145.

As shown, the power cylinder 142 refers to a normal cylinder in which the length of the power rod 144 is variable by the air pressure or hydraulic pressure introduced through the control of the control unit 400, and is preferably a pair of the above-described pairs. Each is installed on the upper surface of the movement guide 145.

At this time, one side of the power cylinder 142 is rotatably fastened through the rotating piece 146, and the other side, which represents the end of the power rod 144, is rotatably coupled to the coupling shaft 113b formed on the outer surface of the basket 113. Accordingly, a structure in which the basket 113 can move in the front and rear direction is satisfied due to a change in the length of the power rod.

Meanwhile, in the present invention, the moving distance of the basket 113 through the horizontal maintaining means 140 is controlled through detection of a horizontal sensor (not shown) constituting the control unit 400.

Therefore, as shown in FIG. 6, in the process of picking up cargo C through the transport unit 300, which will be described later, the moving plate 143 is lifted from the ground and the tilt of the transport unit 300 is horizontally detected. When detected by the sensor, the control unit 400 changes the rod length of the power cylinder 142 so that the center of gravity is directed toward the rear side where the basket 113 is located, thereby maintaining the level of the transport unit 300. It is done.

Of course, although not shown, the worker stores additional weights inside the basket 113 where the storage space 143b or the control unit 400 is installed, as needed, to maintain the level in response to the weight of the cargo C. It is also possible to make it easy to execute.

Meanwhile, the drive motor 220 constituting the drive unit 200 according to the first embodiment of the present invention has a moving plate to secure space to prevent interference by the stopper 143c, etc. during the movement of the basket 113. (143) It is also possible to satisfy the structure housed inside.

And, as shown in FIGS. 9 to 11, the driving unit 200 is mounted as a pair on the car body 100 so that the forklifts 1A and 1B of the present invention can pick up the cargo C and move it to the desired location. A configuration to provide power for movement includes a caterpillar (210), a drive motor (220), a sub wheel (230), a rear bracket (240), a front bracket (250), an elastic member (260), and a cover plate (270). In order to clearly understand the gist of the present invention, the description of one driving unit 200 having the same configuration and structure will replace the description of the other driving unit 200.

In addition, please note that the following description is based on the second embodiment among the embodiments of the car body 100 described above.

For example, the caterpillar 210 is molded using synthetic resin such as rubber, and as shown, is molded to have the shape of an endless track, and includes a sprocket 221 provided at the rear of the car body 100 and a main wheel provided at the front. (215) It is installed to cover the outer surface.

A plurality of guide protrusions 213 are formed to protrude in the longitudinal direction at the center of the inner peripheral surface of the caterpillar 210, and the guide protrusions 213 include a sprocket 221, a main wheel 215, a sub-wheel 230, and a plurality of rollers (R). ) and each are combined or inserted to satisfy a structure that can rotate without separation.

Here, the main wheel 215 is rotatably installed in front of the car body 100 so as to be movable with the front bracket 250, and the sprocket 221 is rotatable by the drive motor 220. 100) It is installed at the rear and the rotational force of the permanent sprocket 221 is transmitted to the caterpillar 210 so that not only the main wheel 215 but also the sub wheel 230 or a plurality of rollers R can rotate.

In addition, on the outer peripheral surface of the caterpillar 210, the forklifts 1A and 1B of the present invention can be easily positioned according to the condition of the floor (for example, the floor of a workshop, asphalt road, unpaved road, etc.) that meets the caterpillar 210 when moving. A plurality of protruding patterns 211 are formed to protrude for movement, and these protruding patterns 211 allow the cargo C to be transported stably without slipping.

In addition, the drive motor 220 is mounted on the car body frame 110 so that it can be controlled by the control unit 400, and the rotatable drive shaft is used to provide power for the sprocket 221 to rotate. combines with

In addition, as shown, the sub-wheels 230 are provided in pairs at the bottom of the rotation shaft 231 rotatably coupled to the vehicle body frame 110, and are rotated at least according to the floor condition on which the forklifts 1A and 1B move. It has a structure that can rotate with the guide protrusion 213 of the caterpillar 210 inserted into one of the subwheels 230.

To this end, a space for inserting the guide protrusion 213 may be formed in the pair of sub-wheels 230.

In addition, as shown, the rear bracket 240 is connected to the car body frame 110 so as to be located between the subwheel 230 and the sprocket 221, and the upper and lower parts are provided to prevent the caterpillar 210 from sagging or being separated. For this purpose, a plurality of rollers (R) forming a space so that the guide protrusion 213 can be inserted are rotatably installed.

In addition, as shown, the front bracket 250 is connected to the car body frame 110 so as to be located between the sub wheel 230 and the main wheel 215, and rollers installed on the rear bracket 240 are installed at the upper and lower parts. A plurality of rollers (R) for the same purpose as (R) are rotatably installed.

At this time, an insertion groove 251 is formed in the front bracket 250 for the movable bracket 217 to be slidably inserted in the longitudinal direction, so that the main wheel 215 is moved in the front-back direction by the elastic member 260, which will be described later. It is desirable to be able to move a certain distance.

In addition, the elastic member 260 is configured to adjust the tension of the caterpillar 210 installed to surround the outer surface of the main wheel 215 and the sprocket 221 so that the caterpillar 210 can be maintained for reasons such as replacement. It includes an extension body 261, a connection body 263, an adjustment bolt 265, an elastic body 267, and an adjustment nut 269.

The extension body 261 is formed to protrude upward from the upper surface of the moving bracket 217 to which the main wheel 215 is rotatably coupled, and a through hole for the adjustment bolt 265 to pass through is formed.

As shown, the connection body 263 is fixedly installed on the outer surface of the front bracket 250 to face the extension body 261, and another through hole is formed on the surface facing the through hole formed in the extension body 261. This enables penetration insertion of the adjustment bolt (265).

A thread for screwing with the adjustment nut 269 may be formed on the outer surface of the adjustment bolt 265 inserted through the extension body 261 and the connecting body 263, and a coil spring-shaped elastic body 267 penetrates the outer surface. is inserted.

At this time, it is preferable that one side of the elastic body 267 inserted through the adjustment bolt 265 is supported on the outer surface of the connection body 263, and the other side is supported by the adjustment nut 269.

Here, the adjustment nut 269 screwed to the outer surface of the adjustment bolt 265 is connected to the other side of the first nut 269a and the elastic body 267 screwed between the connecting body 263 so that it can be supported on the outer surface of the extension body 261. It may include one or more second nuts (269b) that are screwed together with the adjustment bolt (265) to support the.

Thus, when the first nut 269a is loosened or tightened in the direction of the connecting body 263 or the extending body 261, the moving bracket 217 along with the main wheel 215 moves in the forward and backward direction due to the elastic force of the elastic body 267. Power to move is generated, and through this, the distance between the main wheel 215 and the sprocket 221 is adjusted to change the tension of the caterpillar 210, making maintenance of the caterpillar 210 possible.

In addition, when a pair of second nuts (269b) are provided on the other side of the elastic body (267) as needed, the worker loosens or tightens any one of the pair of second nuts (269b) to secure the caterpillar (210). ) It is also possible to adjust the tension.

In addition, as shown, the cover plate 270 does not interfere with the caterpillar 210, as well as the main wheel 215, the sub wheel 230, the sprocket 221, and the plurality of rollers (R) when they rotate. It is mounted in the shape of a plate on the outer surface of the front bracket 250 and rear bracket 240 to protect the components of the drive unit 200, excluding the drive motor 220, from external shock, and can be omitted if necessary. .

At this time, the cover plate 270 is a long hole 271 into which the main wheel 215 is rotatably inserted, but which can limit the moving distance so as not to interfere with the movement of the main wheel 215 when the moving bracket 217 moves. ) is preferably perforated.

Through this configuration of the pair of driving units 200, the forklifts 1A and 1B of the present invention are controlled by the control unit 400 so that the forklifts 1A and 1B can not only move forward and backward, but also rotate in opposite directions. It satisfies a structure that can rotate up to 360 degrees (see Figure 12).

And, as shown in FIGS. 13 to 16, the transport unit 300 moves up and down under the control of the control unit 400 to enable pickup of the cargo C to be transported. It includes a member 310, a support member 320, and an elevating member 330.

For example, as shown, the moving member 310 is installed so that rollers (R) provided on both sides can be inserted into the moving grooves 111 formed in the car body frame 110, and the support member 320 is placed vertically on the upper surface. A pair of stand cylinders 313 that provide power to stand upright or fold parallel to the moving frame 311 are mounted.

At this time, it is preferable that both sides of the moving frame 311 are rotatably fastened to a pair of forward and backward cylinders 130 so that power for moving the moving frame 311 in the forward and backward directions can be transmitted.

In addition, the support member 320 guides the lifting member 330 so that it can be lifted and lowered, but is configured to be erected perpendicularly or arranged parallel to the moving frame 311 by the stand cylinder 313 described above. Includes a cylinder 321 and a lift chain 323.

For this purpose, both lower sides of the support member 320 are rotatably coupled to the movable frame 311, and both outer surfaces are rotatably coupled to the rod of the stand cylinder 313 to be erected vertically or connected to the movable frame 311. Ensure that it can be folded in parallel (see Figure 14).

As shown, the lifting cylinder 321 is controlled by the control unit 400 so that the length of the rod can be varied in the vertical direction inside the support member 320, and the lifting member 330 is connected through a lift chain 323. ) provides power to elevate.

To this end, the support member 320 can be arranged so that the two bodies overlap each other, and the outer body 325 is rotatably coupled to the above-described moving frame 311 and simultaneously fastened to the stand cylinder 313, The inner body 327 is guided by the outer body and protrudes upward so that the lifting member 330 connected to the lifting cylinder 321 by the lift chain 323 can be lifted.

At this time, it is desirable for the outer body or inner body to have a structure in which they are mutually supported by a plurality of rollers (R) for convenience of lifting and lowering.

Additionally, the lifting member 330 is configured to pick up cargo C and includes a pair of pickup bars 331.

The lifting member 330 has an outer surface connected to the lift chain 323 to satisfy a structure that moves up and down according to the change in length of the rod of the lifting cylinder 321, and is provided with a roller (R) as necessary to provide a support member ( 320) It has a structure that is supported on the outside and can be raised and lowered.

As shown, the pickup bar 331 is molded into the shape of a plate with a predetermined length, and rotates to form a predetermined angle with the lifting member 330 by the external force of the worker and is placed on the lower part of the pallet-shaped cargo (C). After insertion, the cargo C can be picked up by lifting the lifting member 330 (see FIGS. 14 and 15).

At this time, the rod of the stand cylinder 313 is stretched so that the protruding end of the pair of pickup bars 331 inserted into the lower part of the cargo C is tilted downward for ease of insertion, so that the support member 320 is tilted at a predetermined angle. It is preferable that it is controlled by the control unit 400 so that it can be controlled.

Meanwhile, as shown in FIGS. 16 and 17, the transport unit 300 in the present invention moves the pickup bar 331 downward at a predetermined angle due to the weight of the cargo C when picking up the cargo C. (a) Pull the rod of the stand cylinder 313 so as not to sag, so that the cargo (C) seated on the pickup bar 331 is tilted at a right angle in the direction of the support member 320 or at a predetermined angle in the direction of the basket, so that the forklift (1A, 1B) It can be controlled by the control unit 400 so that it can move.

As described above, the forklifts (1A, 1B) according to the present invention are different from the conventional ones by adjusting the forklift (1A) to be level during the process of picking up cargo (C), allowing pickup without safety accidents. When the forklift (1B) is rotated while picking up cargo, the pair of driving units 200 rotate in opposite directions so that no mechanical load is generated on the forklifts (1A, 1B). The effect of enabling rotation is expected.

In addition, unlike the conventional case, the transport part 300 is arranged parallel to the car body 100 by the stand cylinder 313, which has the effect of providing convenience of storage and ease of loading by means of movement.

As described above, the present invention has been described with specific details such as specific components and limited embodiments and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , those skilled in the art can make various modifications and variations from this description.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and the scope of the patent claims described later as well as all things that are equivalent or equivalent to the scope of this patent claim shall fall within the scope of the spirit of the present invention. .

1A, 1B: Caterpillar-type folding forklift capable of remote control according to the present invention
100: body part
110: car body frame 111: mobile home
113: Basket 120: Connection frame
130: Forward and backward cylinder 140: Horizontal maintenance means
141: Guide member 142: Power cylinder
200: driving part
210: caterpillar 211: protrusion pattern
213: Guide projection 215: Main wheel
217: moving bracket 220: driving motor
221: Sprocket 230: Subwheel
231: Rotation axis 240: Rear bracket
250: Front bracket 251: Insertion groove
260: elastic member 261: extension body
263; Connector 265: Control bolt
267: elastic body 269: adjustment nut
270: cover plate 271: long hole
300: transport unit
310: moving member 311: moving frame
313: Stand cylinder 320: Support member
321: Elevating cylinder 323: Lift chain
325: outer body 327: inner body
330: Elevating member 331: Pick-up bar
400: Control unit
410: controller

Claims (11)

A car body 100 on which a basket 113 equipped with a remotely adjustable control unit 400 is mounted;
A pair of driving units 200 rotatably provided on both sides of the vehicle body 100; and
It includes a transport unit 300 that is installed to be movable with the vehicle body 100 so as to be located in front of the drive unit 200 and picks up the cargo (C) through control of the control unit 400,
The car body 100 is controlled by the control unit 400 to prevent the car body 100 from tilting in the direction of the transport unit 300 due to the weight of the cargo C picked up by the transport unit 300. It includes horizontal maintaining means 140 for moving the basket 113 to maintain horizontality,
The horizontal maintaining means 140 is connected to the rear side of the driving unit 200, and is mounted on the upper part of the guide member 141, into which the basket 113 is movable in the forward and backward directions, and the guide member 141, but includes a control unit. It includes a power cylinder 142 that provides power to move the basket 113 by (400),
The guide member 141 is formed on both sides of the moving plate 143 on which the basket 113 is movably seated and has a first roller 143a at the bottom, and the basket 113 ) The second roller 113a formed on the outer surface is rotatably inserted, and includes a movement guide 145 on which the power cylinder 142 is mounted,
Inside the moving plate 143, a storage space portion 143b is formed that is opened and closed by the movement of the basket 113, and a stopper 143c is installed on the upper surface to limit the moving distance of the moving basket 113. A caterpillar-type folding forklift capable of moving the center of gravity.
delete delete According to paragraph 1,
The driving unit 200 is
According to the rotation direction of the caterpillar 210 in the form of an endless track, the body part 100 not only moves forward and backward, but also rotates 360 degrees,
The transport unit 300 is folded parallel to the vehicle body 100 to be positioned between a pair of the driving units 200, or is used to stand vertically in front of the vehicle body 100 when picking up cargo (C). A caterpillar-type folding forklift capable of moving the center of gravity.
According to paragraph 1,
The driving unit 200 is
A caterpillar 210 rotatably provided to surround the outer surface of the main wheel 215 and the sprocket 221, and a drive motor 220 coupled to the sprocket 221 to rotate the caterpillar 210;
A sub-wheel 230 rotatably coupled to the vehicle body 100 to face the caterpillar 210;
A rear bracket 240 installed to be connected to the vehicle body 100 and positioned between the subwheel 230 and the sprocket 221;
A front bracket 250 located between the sub wheel 230 and the main wheel 215 and inserted into the main wheel 215 to enable movement in the front and rear directions; and
An elastic member 260 mounted on the front bracket 250 so that the main wheel 215 inserted into the front bracket 250 can move by elastic force. A caterpillar type capable of moving the center of gravity, comprising a. Foldable forklift.
According to clause 5,
The driving unit 200 further includes a cover plate 270,
The cover plate 270 is fastened to the rear bracket 240 and the front bracket 250 to prevent interference with the rotation of the caterpillar 210, and has a long hole on the outer surface into which the main wheel 215 is movably inserted. A caterpillar-type folding forklift capable of moving the center of gravity, characterized in that (271) is formed.
According to clause 5,
At least one of the rear bracket 240 or the front bracket 250
A caterpillar-type folding forklift capable of moving the center of gravity, further comprising a roller (R) rotatably coupled to the inner surface of the caterpillar (210).
According to clause 5,
The elastic member 260 is
An extension (261) protruding and connected to the upper surface of the movable bracket (217);
A connection body 263 provided on the front bracket 250 to face the extension body 261;
An adjustment bolt (265) formed in the shape of a column with threads formed on the outer surface, passes through the connecting body (263) and is fixed to the extension body (261);
An elastic body 267 inserted through the outside of the adjustment bolt 265 so that one side can be supported on the outer surface of the connection body 263; and
A plurality of adjustment nuts are provided to be screwed to the outer surface of the adjustment bolt 265 so that the elastic force of the elastic body 267 can be varied and the length of the adjustment bolt 265 can be fixed to the extension body 261. (269); Including,
The adjustment nut 269 is a first nut 269a screwed to the adjustment bolt 265 so as to face the outer surface of the extension body 261, and the adjustment bolt 265 and the screw to support the other side of the elastic body 267. A caterpillar-type folding forklift capable of moving the center of gravity, comprising a second nut (269b) that is coupled.
According to paragraph 1,
The transport unit 300 is
A moving member 310 coupled to the vehicle body 100 so as to be slidably movable in the forward and backward directions;
A support member 320 that is rotated by the moving member 310 and stands vertically or is folded parallel to the moving member 310 and has a lifting cylinder 321 therein; and
A pair of pickup bars 331 for picking up cargo (C) are rotatably mounted on the outer surface, and a lifting member 330 that elevates and lowers the cargo (C) by the lifting cylinder 321; A caterpillar-type folding forklift capable of moving the center of gravity, comprising:
According to clause 9,
The moving member 310 is
A moving frame 311 provided with a roller (R) rotatably inserted into the vehicle body 100; and
A caterpillar-type folding forklift capable of moving the center of gravity, comprising a pair of stand cylinders (313) provided on the moving frame (311) to rotate the support member (320).
According to paragraph 1,
The body part 100 is
A pair of car body frames 110 formed with a moving groove 111 into which the carrying unit 300 can be inserted forward and backward, and in which the driving unit 200 is installed at a position symmetrical to the moving groove 111;
A connection frame 120 that connects a pair of the vehicle body frames 110 to each other and provides a space for the transport unit 300 to fold or move forward and backward; and
Includes a forward and backward cylinder 130 that provides power so that the transport unit 300 can move forward and backward,
A caterpillar-type folding forklift capable of moving the center of gravity, characterized in that the horizontal maintaining means (140) on which the basket (113) is movably mounted is installed on the rear side of the connecting frame (120).

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