KR102074670B1 - Vertical lifting apparatus - Google Patents

Abstract

The vertical lifting mechanism includes a frame, a driving device installed on the frame, a linear actuator that performs linear motion by power provided by the driving device, a scissor link whose one end is connected to the linear actuator and is stretched in the vertical direction, and the other end of the scissor link. An elevating module for elevating according to the expansion and contraction of the scissor link, and a support plate connected to the elevating module for elevating and elevating the object as the elevating module elevates.

Description

Vertical lifting mechanism {VERTICAL LIFTING APPARATUS}

The present invention is a vertical lifting mechanism, and more specifically, by using a linear actuator as a driving device for elevating the support plate, it is possible to minimize the occurrence of operating noise and to prevent the occurrence of safety accidents such as the fall of the support plate even when the power supply is cut off. And a vertical lifting mechanism capable of maximizing the stroke of the support plate.

Recently, vertical lifting mechanisms have been used for various purposes. For example, a vertical lifting device can lift a wheelchair vertically to allow the user of the wheelchair to get in a vehicle, to easily climb up and down stairs, or to allow a person to climb to the platform of a playground or to lift an object to a certain height. It is used in the case of raising.

However, the conventional vertical lifting mechanism (see Korean Patent No. 10-1020722) uses a hydraulic cylinder to raise and lower the support plate, and the operation noise is severely issued. Accordingly, the vertical lifting mechanism is left without using an expensive vertical lifting mechanism. There is a situation.

In addition, the use of a hydraulic cylinder as a driving unit increases the overall size of the vertical lifting mechanism, which also causes difficulties in transportation and storage.

In addition, when the power supply to the hydraulic cylinder is suddenly interrupted, the support plate is lowered, causing a safety accident such as injury to a person on the support plate or damage to an object.

In order to solve this problem, there is a need for a vertical lifting mechanism that minimizes the operating noise and reduces the size of the device to increase the convenience of transportation and storage, and does not drop the support plate even when the power supply is interrupted.

The problem to be solved by the present invention is to minimize the occurrence of operating noise by using a linear actuator as a drive device for lifting the support plate and to prevent the occurrence of safety accidents such as falling of the support plate even if the power supply is cut off, and also the rotating body And a length member engaged with the length member to provide a vertical lifting mechanism that maximizes the lifting amount of the support plate by lifting the support plate while the length member is wound or unwound on the rotating body.

Tasks to be solved by the present invention are not limited to the above-mentioned problems, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

Vertical lifting mechanism according to an embodiment of the present invention for solving the above problems, the frame, the drive device installed in the frame, a linear actuator for linear movement by the power provided by the drive device, one end is connected to the linear actuator vertical It includes a scissor link stretched in the direction, a lift module connected to the other end of the scissor link to move up and down according to the expansion and contraction of the scissor link, and a support plate connected to the lift module to move up and down as the lift module moves up and down.

According to the present invention, the use of a linear actuator as a driving device for elevating the support plate minimizes the occurrence of operating noise and prevents the occurrence of safety accidents such as falling of the support plate even when the power supply is cut off, and also corresponds to the rotating body. The bite length member may be used to provide a vertical lifting mechanism that maximizes the lifting amount of the support plate by lifting the support plate while the length member is wound or unwound on the rotating body.

1 is a front view of a vertical lifting mechanism in accordance with one embodiment of the present invention.
2 is a side view of a vertical lifting mechanism in accordance with one embodiment of the present invention.
3 is a plan view of a vertical lifting mechanism in accordance with one embodiment of the present invention.
Figure 4 is a side view of the inside of the vertical lifting mechanism according to an embodiment of the present invention.
5 is a view from above of the inside of the vertical lifting mechanism according to an embodiment of the present invention;
FIG. 6 is a view illustrating a portion A of FIG. 5.
7 is a view showing a driving unit for elevating the support plate of the vertical lifting mechanism according to an embodiment of the present invention, and is a view showing the state of the driving unit when the support plate is in the lowered state.
8 is a view showing a driving unit for elevating a supporting plate of a vertical lifting mechanism according to an embodiment of the present invention, and showing a state of the driving unit when the supporting plate is in an elevated state.
9 is a view showing a process of lifting the support plate by the lifting module constituting the drive unit of the vertical lifting mechanism according to an embodiment of the present invention.
10 is a view showing the lifting and lowering of the support plate of the vertical lifting mechanism according to an embodiment of the present invention.
11 is a view showing a process of folding the guide member of the vertical lifting mechanism according to an embodiment of the present invention.

The present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and having ordinary skill in the art to which the present invention pertains. It is provided to fully inform the person of the scope of the invention.

In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, the words "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, or actions.

1 to 11, an article classification and storage system according to an embodiment of the present invention will be described. 1 is a front view of a vertical lifting mechanism in accordance with one embodiment of the present invention. 2 is a side view of a vertical lifting mechanism in accordance with one embodiment of the present invention. 3 is a plan view of a vertical lifting mechanism in accordance with one embodiment of the present invention.

Figure 4 is a side view of the inside of the vertical lifting mechanism according to an embodiment of the present invention. 5 is a view from above of the inside of the vertical lifting mechanism according to an embodiment of the present invention; FIG. 6 is a view illustrating a portion A of FIG. 5.

7 is a view showing a driving unit for elevating the support plate of the vertical lifting mechanism according to an embodiment of the present invention, and is a view showing the state of the driving unit when the support plate is in the lowered state. 8 is a view showing a driving unit for elevating a supporting plate of a vertical lifting mechanism according to an embodiment of the present invention, and showing a state of the driving unit when the supporting plate is in an elevated state.

9 is a view showing a process of lifting the support plate by the lifting module constituting the drive unit of the vertical lifting mechanism according to an embodiment of the present invention. 10 is a view showing the lifting and lowering of the support plate of the vertical lifting mechanism according to an embodiment of the present invention.

11 is a view showing a process of folding the guide member of the vertical lifting mechanism according to an embodiment of the present invention.

1 to 11, the vertical lifting mechanism 200 according to an embodiment of the present invention is a lifting mechanism for lifting a person or an object, and includes a frame 5, a driving device, a linear actuator, a scissor link, a lifting module, It may include a support plate 10, a guide member 160, a drive wheel 150 and the operating device.

The frame 5 is a member forming a frame of the vertical lifting mechanism 200, and various configurations described later may be installed. The shape of the frame 5 may vary depending on the situation.

The drive device is a device provided in the frame 5 to provide a driving force to a linear actuator described later.

5 and 6, the driving device may include a driving motor 20, and in total, two driving apparatuses may be installed in the frame 5, one on each side of the support plate 10, which will be described later. However, the present invention is not limited thereto, and the number of driving devices may vary.

A linear actuator is a device that moves linearly with the power provided by the drive.

The drive device may be connected to a linear actuator, and the driving force of the drive device may be transmitted to the linear actuator so that the linear actuator may make a linear motion.

In addition, a total of two linear actuators may be installed, one on each side of the support plate 10, but the number of the linear actuators may vary.

6 to 8, the ball screw 50 may be used as one type of the linear actuator, and the driving device may be the driving motor 20.

The ball screw 50 is rotated by receiving the rotational force of the drive motor 20 and is installed by being inserted into a screw shaft and a screw shaft having a thread formed on the surface thereof, and a ball rolling along the groove between the threads of the screw shaft is installed to rotate the screw shaft. As a result it may include a ball nut linearly moving on the screw shaft.

In addition, a left-handed thread may be formed in a portion 30 of the screw shaft of the ball screw 50, and a right-handed thread may be formed in the other portion 40, and the first ball nut 35 may be positioned at a portion where the left-handed thread is formed. The second ball nut 45 may be positioned at a portion where the right-hand thread is formed.

Therefore, when the screw shaft is rotated by the drive motor 20, the first ball nut 35 and the second ball nut 45 may linearly move in opposite directions. That is, when the driving motor 20 rotates in the first direction, the first ball nut 35 and the second ball nut 45 may move away from each other, and conversely, when the driving motor 20 rotates in the second direction. The first ball nut 35 and the second ball nut 45 may be close to each other.

Alternatively, leadscrews may be used in other forms of linear actuators.

Like the ball screw 50, a left screw thread may be formed on a part of the screw shaft of the lead screw, a right screw thread may be formed on the other part, a first nut may be located on the left screw thread part, and the right screw thread may be formed. The second nut may be located in the formed portion.

Accordingly, when the screw shaft is rotated by the drive motor, the first nut and the second nut may linearly move in opposite directions. That is, when the drive motor rotates in the first direction, the first nut and the second nut may move away. On the contrary, when the drive motor rotates in the second direction, the first nut and the second nut may become close.

Alternatively, the LM Guide can be used as another form of linear actuator.

The LM guide may include a rail and a block for linearly moving on the rail, wherein the driving device may be a combination of a drive motor and a ball screw or a combination of a drive motor and a pulley, but is not limited thereto.

These LM guides may be installed in a straight line and two may be installed, and the blocks of each LM guide may be linearly moved in opposite directions with respect to each other by a driving device. That is, each block can be near or far away.

However, the installation form and number of LM guides are not limited to the above-mentioned matters and various forms may be applied.

Although the ball screw 50, the lead screw, and the LM guide have been described as the linear actuators above, such a device may be applied if linear movement is possible using an external force, without being limited thereto.

As discussed above, the present invention does not use a hydraulic cylinder and may instead use a linear actuator.

In this regard, in the related art, a hydraulic cylinder is used in the lifting equipment, and thus the operation noise is high, and thus, a lot of cases are left without using the lifting equipment purchased at a high cost.

However, in the case of the present invention, it is possible to increase the utilization of the vertical lifting mechanism 200 by minimizing the generation of operating noise by using a linear actuator.

In addition, the use of the linear actuator can reduce the size of the entire instrument than when using the hydraulic method, as a result can be convenient to use and storage.

The scissor link is a member or a foldable link member formed by connecting an X-shaped unit link, and has one end connected to a linear actuator and stretched in a vertical direction.

That is, the caesar link may be stretched or stretched while being folded or unfolded with an external force.

Referring to FIGS. 7 and 8, one embodiment in which such a scissor link is connected to a ball screw 50, which is a form of a linear actuator, may be as follows.

The scissor link may include a first scissor link 70 connected to the first ball nut 35 and a second scissor link 80 connected to the second ball nut 45.

In addition, the first fixing member 60 may be located on the side of the screw shaft portion on which the left-hand thread is formed, and the second fixing body 65 may be located on the side of the screw shaft portion on the right-hand thread.

Two ends of the first scissor link 70 may be connected to the first ball nut 35 and the first fixture 60, respectively, and two ends of the second scissor link 80 may each be the second ball nut. 45 and the second fixture 65.

In addition, the other end of the first scissor link 70 and the other end of the second scissor link 80 may be connected to a lifting module to be described later.

Under this structure, when the drive motor 20 rotates in the first direction (clockwise or counterclockwise), the first ball nut 35 may move away from the first fixture 60, and also the second ball The nut 45 may be away from the second fixture 65.

Accordingly, the first scissor link 70 and the second scissor link 80 may be folded to shrink in length in the vertical direction (see FIG. 7).

On the contrary, when the drive motor 20 rotates in the second direction, the first ball nut 35 may be close to the first fixture 60, and the second ball nut 45 may be the second fixture ( 65).

Accordingly, the first scissor link 70 and the second scissor link 80 may be extended to extend in the vertical direction (see FIG. 8).

Alternatively, two ends of one scissor link may be connected to the first ball nut 35 and the second ball nut 45 without the first fixture 60 and the second fixture 65, respectively. .

Under such a structure, when the driving motor 20 rotates in the first direction, the first ball nut 35 and the second ball nut 45 may be in close proximity to each other, and thus the length of the scissor link may be folded to shrink in the vertical direction. have.

On the contrary, when the driving motor 20 rotates in the second direction, the first ball nut 35 and the second ball nut 45 may be far from each other, and the scissor link may be extended to extend in the vertical direction. .

The lifting module is connected to the other end of the scissor link and moves up and down according to the expansion and contraction of the scissor link.

7 to 9, the elevating module may include an elevating base, a rotating body installed on the elevating base, and a length member 140 engaged with the rotating body while winding the rotating body.

The elevating base may be configured to be connected to the other end of the scissor link, and may have a single shape or may include an elevating plate 90 and an installation bracket 100 installed on the elevating plate 90.

When the elevating base is constituted by the elevating plate 90 and the mounting bracket 100, the scissor link may be connected to the elevating plate 90, and the rotating body may be installed on the mounting bracket 100.

The rotating body may include a first upper rotating body 110, a second upper rotating body 120, and a lower rotating body 130.

In particular, referring to FIG. 9, the first upper rotating body 110 may be installed at the lifting base (or the mounting bracket 100), and the second upper rotating body 120 may be the lifting base (or the mounting bracket 100). It may be installed on the side of the first upper rotating body 110, the lower rotating body 130 is installed on the lifting base (or mounting bracket 100) and the first upper rotating body 110 and the second It may be located below and between the upper rotation body (120).

Such a rotating body may be any one of a sprocket, a timing gear and a pulley.

The length member 140 is a member having a predetermined length, one end of which is fixed to the frame 5, the other end of which is fixed to the support plate 10, and a portion between the one end and the other end of the first upper rotating body 110. ), While winding the second upper rotary body 120 and the lower rotary body 130, it may be engaged with the first upper rotary body 110, the second upper rotary body 120, and the lower rotary body 130. .

As the scissor link expands and contracts in the vertical direction, the lifting base (or the lifting plate 90) connected to the scissor link may move up and down. Accordingly, the first upper rotating body 110, the second upper rotating body 120, and the lower rotating body 130 which are installed on the lifting base (or the mounting bracket 100) and wound on the length member 140 are clocks. Or rotate counterclockwise.

In addition, since the length member 140 is engaged with the first upper rotating body 110, the second upper rotating body 120, and the lower rotating body 130, the length member 140 is wound as these rotating bodies rotate. Or can be unwound.

As a result, the length member 140 may pull the support plate 10 upward or downward, so that the support plate 10 may be elevated.

The length member 140 may be a chain when the rotating body is a sprocket, a timing belt when the rotating body is a timing gear, and a wire when the rotating body is a pulley.

Unlike in the case of the present invention, if the support plate 10 is directly connected to the scissor link and the support plate 10 is lifted while the scissor link is folded or unfolded, the stroke of the support plate 10 (ie, the maximum lift amount or the maximum lift amount) ) May be equal to the elongation of the caesar link.

However, in the case of the present invention, as the above-mentioned elevating module exists between the scissor link and the support plate 10, the length member 140 is wound or unwound by the rotating body so that the stroke of the support plate 10 may be reduced. It may be greater than the elongation, for example twice.

That is, the stroke of the support plate 10 may have a stroke amount that is twice the stroke amount of the scissor link.

In other words, due to the presence of the elevating module, the vertical lifting mechanism 200 according to the present invention has a large lifting range and thus has excellent utility. The lifting amount of the support plate 10 includes the lifting amount of the lifting module lifting and lowering according to the expansion and contraction of the scissor link and the lifting amount by the length member 140 wound or unrolled.

In addition, the stroke of the support plate 10 may also increase when the X-shaped unit link is increased in the scissor link to increase the stretch length of the scissor link.

Meanwhile, as shown in FIG. 9, when one end of the length member 140 is connected to the frame 5, the connecting bolt 190 may be used, and the tightening amount of the connecting bolt 190 to the frame 5 may be adjusted. By adjusting, the degree of tension of the length member can be adjusted.

In addition, the other end of the length member 140 may be connected to the connection portion 180 formed on the support plate 10 when the other end of the length member 140 is connected to the support plate 10.

The support plate 10 is a plate-shaped member which is connected to the elevating module to elevate the subject while elevating as the elevating module elevates.

The support plate 10 may include a support plate and a vertical plate formed on both sides of the support plate, but the shape of the support plate 10 may vary according to a situation and a use.

As described above, the support plate 10 may be coupled to the length member 140 through the connection portion 180 formed on the vertical plate, and the support plate 10 when the length member 140 is pulled by the rotating body. May rise, and the support plate 10 may descend when the length member 140 is pushed by the rotating body.

In addition, the object supported by the support plate 10 may be an object, an animal or a person, and the object is not limited.

As described above, in the case of the present invention, the linear actuator moves linearly by the power provided by the driving device, and the support plate 10 also moves up and down while the scissor link moves up and down by stretching the scissor link through the linear movement. can do.

If the power supply is stopped and the driving device does not operate, a force falling on the support plate 10 by the weight of the support object on the support plate 10 may be applied, and the support plate 10 may suddenly fall.

In particular, in the case of the conventional hydraulic cylinder system, when the power supply is interrupted, the support plate may suddenly descend and the person on the support plate may be injured or the object may be damaged.

However, in the case of the present invention, as the linear actuator, in particular the ball screw 50, is used, the ball nut connected to the scissor link may be in place without moving in the horizontal direction. Therefore, since the height of the scissor link does not change, the support plate 10 may be stopped without falling, and a safety accident may not occur.

The guide member 160 is a member for guiding the lifting and lowering of the support plate 10.

The guide member 160 may have a rod shape, and may be installed one by one on both sides of the support plate 10, or two may be installed, but the number of installation may vary.

On the other hand, both sides of the support plate 10 may be provided with a roller 170, the roller 170 may move along the rod-shaped guide member 160, when the support plate 10 is elevated Since the roller 170 moves along the guide member 160, the guide member 160 may guide the lifting and lowering of the support plate 10.

As shown in FIG. 4, the guide member 160 may be folding. In particular, referring to Figure 11, the guide member 160 may include one side and the other side, may be formed in the insertion groove on any one side of the one side and the other side, the other side is fitted into the insertion groove Insertion protrusions may be formed.

When using the vertical lifting mechanism 200 according to the present invention, the insertion protrusion of the guide member 160 is inserted into the insertion groove so that one side and the other side form a straight line, but when stored after use, the insertion protrusion is removed from the insertion groove and guided. The member 160 may be folded.

Therefore, the overall size of the vertical lifting mechanism 200 can be reduced, and thus the storage of the vertical lifting mechanism 200 can be facilitated.

The driving wheel 150 is a member installed in the frame 5 to move the vertical lifting mechanism 200.

The vertical lifting mechanism 200 according to the present invention may be easily moved when it is necessary to move to a specific place for installation and storage by having the driving wheel 150.

That is, the vertical lifting mechanism according to the present invention may be fixedly installed in a specific area, or may be used as a movable vertical lifting mechanism by applying the driving wheel 150.

The operating device is equipment for operating the vertical lifting mechanism 200.

As an example, the driving plate 20 may be operated by the operating device to lift the support plate 10 of the vertical lifting mechanism 200.

In addition, the driving plate 20 may be stopped through the operation device to stop the support plate 10 at a specific height.

Such an operation device may be in a separate equipment form from the vertical lifting mechanism 200, and may be connected to the vertical lifting mechanism 200 by wire or wirelessly to control the vertical lifting mechanism 200.

Alternatively, the operation device may be in the form of a button installed in the vertical lifting mechanism 200.

In addition, the vertical lifting mechanism 200 according to the present invention may include a limit switch, it is possible to control the vertical position of the support plate 10 by checking the lifting degree of the support plate 10 through the limit switch.

In addition, it is possible to prevent the support plate 10 from rising above a predetermined height or falling below a predetermined height through a limit switch.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

5: frame 10: support plate
20: drive motor 35: first ball nut
45: second ball nut 50: ball screw
60: first fixture 65: second fixture
70: first scissor link 80: second scissor link
90: lifting plate 100: mounting bracket
110: first upper rotating body 120: second upper rotating body
130: lower rotating body 140: length member
150: driving wheel 160: guide member
170: roller 180: connecting portion
190: connecting bolt 200: vertical lifting mechanism

Claims (10)

frame;
A drive device installed in the frame;
A linear actuator for linear movement by the power provided by the driving device;
A scissor link, one end of which is connected to the linear actuator and stretched in a vertical direction;
A lift module connected to the other end of the scissor link to move up and down according to the expansion and contraction of the scissor link; And
And a support plate connected to the elevating module and elevating a target while elevating as the elevating module elevates.
The lifting module,
Elevating base;
A first upper rotating body installed on the lifting base;
A second upper rotating body installed on the lifting base and positioned to the side of the first upper rotating body;
A lower rotor installed on the lifting base and positioned below and between the first upper rotor and the second upper rotor; And
One end is fixed to the frame, the other end is fixed to the support plate, and a portion between the one end and the other end is wound around the first upper rotor, the second upper rotor and the lower rotor while the first upper rotor And a length member engaged with the second upper and lower rotors,
As the first upper rotating body, the second upper rotating body and the lower rotating body rotates clockwise or counterclockwise, the length member is wound around the first upper rotating body, the second upper rotating body and the lower rotating body, Unwind from the first upper rotor, the second upper rotor and the lower rotor,
The length member wound or unrolled is to lift and lower the support plate,
The lifting amount of the support plate, the vertical lifting mechanism including the lifting amount by the lifting member and the length of the lifting and unwinding of the lifting module which is lifted in accordance with the expansion and contraction of the scissor link.
delete The method of claim 1,
Further comprising a guide member for guiding the lifting of the support plate,
And said guide member is foldable. The method of claim 1,
And said linear actuator is a ball screw. The method of claim 1,
And said linear actuator is an LM guide. The method of claim 1,
And said linear actuator is a lead screw. The method of claim 1,
The first upper rotating body, the second upper rotating body and the lower rotating body are sprockets,
And the length member is a chain. The method of claim 1,
The first upper rotating body, the second upper rotating body and the lower rotating body are timing gears,
And the length member is a timing belt. The method of claim 1,
The first upper rotating body, the second upper rotating body and the lower rotating body are pulleys,
And the length member is a wire. The method of claim 1,
And a drive wheel mounted to said frame.

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