KR20120070041A - Lifting apparatus - Google Patents

Abstract

PURPOSE: A lifting device is provided to prevent eccentricity when a target object moves upward and downward, and to guarantee stable operational performance by maintaining horizontality according as an actuating rod and a synchronizing rod support a target object in both positions. CONSTITUTION: A lifting device comprises a driving unit(10), a driven unit(20), and a medium member(30). The driving unit comprises a housing(11), a piston, and an actuating rod(15). The housing has intake and exhaust parts in the upper and lower parts. The piston is arranged between intake and exhaust parts inside the housing to be lifted up and down. The actuating rod is connected to the piston. The driven unit comprises a gear box(21), a synchronizing rod(23), and an interlocking rod. The gear box has a first shaft through-hole part and multiple second shaft through-hole parts communicating with the first shaft through-hole part. The synchronizing rod is arranged in the first shaft through-hole part and a rack part is arranged in each second shaft through-hole part. The interlocking rod is arranged in each second shaft through-hole part and has a pinion part engaged with the rack part. The driven unit is connected to one side of the driving unit. The medium member connects each exterior ends of the actuating rod and the synchronizing rod and interlocks the driven unit by the driving unit.

Description

Lifting device {LIFTING APPARATUS}

In the present invention, the driving unit and the driven unit are arranged side by side, by introducing a media member connecting the operating rod of the driving unit and the tuning rod of the driven unit to drive the driving force of the drive unit to the driven unit to interlock, In order to modularize the lifting device, the linkage rods of each lifting device linked by the tuning rods of the driven unit are connected to the leveling shafts so that the lifting speeds of the lifting devices can be maintained to be the same so that the lifting device can move up and down. It relates to a lifting device that can ensure the stability and reliability of operation.

In general, the lifting device (L) is an up-down diverter for conveyors, a table lifter, an entrance / exit HOME POSITION LIFTER for an automatic warehouse, a fork lifter, a ball bush, a guide unit for LM guides, and a GLASS UP / DOWN UNIT (CLEAN). ROOM TYPE), GLASS PIN UP UNIT (CLEAN ROOM TYPE), and other automation and industrial machinery UP / DOWN SYSTEM.

The conventional lifting device is configured in a vertical arrangement in which the driving unit and the follower are connected to the upper and lower parts to raise and lower the object by operating the driven unit in conjunction with the driving force of the driving unit.

However, the conventional lifting device has a problem in that it is difficult to configure the device compactly because there is a limit in reducing the height size in the form that the follower is connected to the upper or lower portion of the drive unit,

In addition, since the object is lifted up and down only by the cylinder rod of the driving unit, when the object placed on the table connected to the cylinder rod is pulled to one side and the center of gravity is out of the center, an eccentricity occurs during the lifting operation, thereby deteriorating operation reliability.

Furthermore, it is not easy to increase the stroke distance of the lifting device because the driving part and the driven part are engaged with each other.

This has a problem of reducing the utilization of the device by limiting the use and utilization range of the lifting device.

The present invention has been made to solve the above problems,

The drive unit and the driven unit are arranged side by side, by introducing a media member connecting the operating rod of the drive unit and the tuning rod of the driven unit by interlocking the driving force of the drive unit to the driven unit to interlock, and a plurality of lifting devices Stability of operation when lifting and lowering the object by connecting the interlocking rods of each lifting device linked by the tuning rods of the driven unit to the leveling shaft so that the lifting speed of the lifting device can be maintained the same. And it is one object to provide a lifting device that can ensure the reliability.

Since the operating rod and the tuning rod support the object lifted by the lifting device according to the present invention at both points, it is possible to maintain the level, thereby preventing the occurrence of eccentricity when the object is raised and lowered, thereby ensuring stable operating performance. There is,

In addition, since the drive unit and the driven unit are arranged in a horizontal structure, the size of the device can be made compact compared to the lifting device in which the drive unit and the follower are vertically structured, and the cost can be reduced. It is another object of the present invention to provide a lifting device that can reduce the size and increase the stroke distance of each rod, thereby increasing the utilization range of the device.

The cover according to the present invention is provided to enable the opening and closing of the housing, and the operation rod and the tuning rod connected to the intermediate member are provided with detachable means.

Maintenance work to replace or repair parts of the device, or to replace the working rod and the tuning rod to raise or lower the initial setting height of the lifting device, can be easily and easily performed to improve the work efficiency. Another object is to provide a lifting device.

According to an aspect of the present invention, there is provided a lifting apparatus including: a housing having an upper and lower air intake and exhaust units; a driving unit including a piston built in the housing and disposed between the intake and exhaust units; A tuning rod having a first shaft penetrating portion, a plurality of second shaft penetrating portions communicating with the first shaft penetrating portion, and a rack portion provided on the first shaft penetrating portion and exposed to each of the second shaft penetrating portions; And a driven unit provided on each of the second shaft through parts and including an interlocking rod having a pinion part engaged with the rack part and connected to one side of the driving unit; And an intermediate member connecting the outer ends of the operating rod and the tuning rod and interlocking the driven unit by the driving unit.

In the drive unit according to the invention the upper end of the housing is further provided with a cover,

The cover is formed in the body, the body is formed in the body, the guide hole for the operating rod, and formed in the upper portion of the body, the annular insertion groove formed on the inner wall surface of the housing of the cover And a first hermetic holding member provided at the snap ring to open and close, the outer wall surface of the body, and the guide hole wall surface.

The intermediate member and the operating rod and the tuning rod according to the present invention are further provided with detachable means,

The detachable means is formed on the upper end of the operating rod, the first fastening portion formed with a screw thread on the outer surface, the second fastening portion formed on the upper surface of the tuning rod, the thread formed on the inner surface, and the intermediate member And a first fastening hole having a screw thread formed on an inner surface thereof to correspond to the first fastening portion, and a second fastening hole formed in the intermediate member and corresponding to the second fastening portion.

The first fastening portion and the first fastening hole are fixed by the coupling nut provided in the first fastening portion,

The second fastening portion and the second fastening hole are inserted through the second fastening hole, characterized in that coupled by the coupling bolt fastened to the second fastening portion.

In the drive unit according to the invention the upper and lower portions of the piston is further provided with a second hermetic material,

A lubrication band is further provided between the second hermetic holding members.

The upper and lower portions of the piston is further provided with a buffer member

It is characterized in that the elastic member which is built in the housing, arranged on the upper or lower portion of the piston.

The lifting device according to the present invention has a drive unit and a driven unit arranged side by side, by introducing a media member connecting the operating rod of the drive unit and the tuning rod of the driven unit to transfer the driving force of the drive unit to the driven unit to interlock In order to modularize a plurality of lifting devices, the linkage rods of the lifting devices linked by the tuning rods of the driven units are connected to the leveling shafts to synchronize the lifting devices of the lifting devices so that the lifting speeds of the lifting devices can be maintained the same. It is possible to ensure the stability and reliability of the operation during the lifting operation.

Since the operating rod and the tuning rod support the object lifted by the lifting device according to the present invention at both points, it is possible to maintain the level, thereby preventing the occurrence of eccentricity when the object is raised and lowered, thereby ensuring stable operating performance. There is,

In addition, since the drive unit and the driven unit are arranged in a horizontal structure, the size of the device can be made compact compared to the lifting device in which the drive unit and the follower are vertically structured, and the cost can be reduced. The size can be reduced, but the stroke length of each rod can be increased, thus increasing the range of application of the device.

The cover according to the present invention is provided to enable the opening and closing of the housing, and the operation rod and the tuning rod connected to the intermediate member are provided with detachable means.

Maintenance work to replace or repair parts of the device, or to replace the working rod and the tuning rod to raise or lower the initial set height of the lifting device, can be done easily and easily to improve the work efficiency. do.

1 is an exploded perspective view showing a lifting device according to the present invention,
2 is a cross-sectional view showing a lifting device according to the present invention;
3 is an operation diagram showing an operating state of the lifting device according to the invention,
4 is a plan sectional view showing a driven unit of the lifting device according to the present invention;
5 is a cross-sectional view showing another modified example of the lifting apparatus according to the present invention;
6 is a use state diagram showing a lifting device according to the present invention.

The lifting apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

First, the lifting device (L) of the present invention is an up-down diverter for a conveyor, a table lifter, an entrance / exit HOME POSITION LIFTER for an automatic warehouse, a fork lifter, a ball bush, an LM guide substitute guide unit, a GLASS UP / DOWN UNIT ( CLEAN ROOM TYPE), GLASS PIN UP UNIT (CLEAN ROOM TYPE), and other automation and industrial machines such as UP / DOWN SYSTEM can be applied to various industrial fields.

As shown in Figures 1 to 4 the lifting device according to the invention

A housing (11) having an intake and exhaust section (12) at the top and a bottom, a piston (13) built in the housing (11), and provided between the intake and exhaust sections (12) and descending; A driving unit 10 including an actuating rod 15 connected thereto; A gear box 21 having a first shaft through portion 21a, a plurality of second shaft through portions 21b communicating with the first shaft through portion 21a, and a first shaft through portion 21a, A tuning rod 23 having a rack portion 23a exposed to each of the second shaft through portions 21b, and a pinion portion provided in each of the second shaft through portions 21b and engaged with the rack portion 23a. A driven unit 20 including an interlocking rod 25 having a 25a and connected to one side of the driving unit 10; And an intermediate member 30 for connecting the outer ends of the operating rod 15 and the tuning rod 23 and interlocking the driven unit 20 by the driving unit 10.

First, the lifting device (L) according to the present invention comprises a housing 11 of the drive unit 10 and the gearbox 21 of the driven unit 20 is made of a single block body as shown in FIG. , or

Although not shown in the accompanying drawings, the housing of the drive unit and the gearbox of the driven unit may be configured in a form of being connected to each other by being made of a separate individual body.

In the following description, the housing 11 and the gear box 21 are formed of one block body as described above.

2, the housing 11 of the driving unit 10 is provided on the right side, and the gear box 21 of the driven unit 20 is provided on the left side for convenience of description.

1 to 4, in the lifting device according to the present invention, the drive unit 10 is

The air is driven through the inflow and outflow, and the driving force serves to interlock and transfer the driven unit 20 by the intermediate member 30.

The drive unit 10 according to the present invention includes a housing 11 having an intake and exhaust unit 12 thereon,

A piston (13) built in the housing (11) and descending by air flowing in and out through the intake and exhaust unit (12);

It comprises a working rod 15 connected to the piston (13).

The housing 11 is provided with a cylindrical inner chamber,

The intake / exhaust unit 12 occupies an inner chamber of the housing 11 located above the piston 13, and has a first intake / exhaust unit 12A having a first air hole 12a communicating with the inner chamber.

It comprises a second intake and exhaust portion 12B having an inner chamber of the housing 11 located below the piston 13 and having a second air hole 12b communicating with the inner chamber.

And an annular insertion groove (11a) is formed on the upper wall surface of the inner chamber to insert the snap ring 45 of the cover 40 is inserted.

In addition, there is provided an air supply device (not shown) for injecting air at a constant pressure of air to the first and second intake and exhaust portion 12B,

The air supply device and the first and second air holes 12b of the intake and exhaust unit 12 are connected to a supply pipe (not shown) to allow the inflow and outflow of air to the first and second intake and exhaust units 12A and 12B. It becomes possible.

The piston 13 is embedded in an interior chamber of the housing 11 and is arranged between the first and second intake and exhaust portions 12A and 12B to flow in and out through the first and second intake and exhaust portions 12A and 12B. It goes up and down by air,

At this time, the piston 13 is lowered state is called the initial state,

When air of a predetermined pressure is injected into the second intake and exhaust unit 12B, the piston 13 is raised and lowered by air pressure, and the air remaining in the first intake and exhaust unit 12A is discharged.

In this state, when air of a constant pressure is injected into the first intake and exhaust unit 12A again, the piston 13 is lowered by the air pressure and the air remaining in the second intake and exhaust unit 12B is discharged.

The piston 13 is raised and lowered by the air flowing in and out through the first and second intake and exhaust portions 12A and 12B.

And the upper and lower portions of the wall surface of the piston 13 is provided with an annular first mounting groove 13a,

The first mounting groove 13a is provided with a second hermetic holding member 17 in the form of an O-ring, so that the second hermetic holding member 17 has an inner chamber wall surface of the housing 11 when the piston 13 moves up and down. By keeping tight

By preventing the leakage of air injected into the first and second intake and exhaust parts 12A and 12B positioned above and below the piston 13, it is possible to prevent the driving force from being lowered due to air pressure loss.

In addition, an annular second mounting groove 13b is provided between the wall surface of the piston 13, that is, between the first mounting groove 13a.

The second mounting groove 13b is provided with a lubrication band 18,

The lubrication band 18 is raised and lowered along the inner wall of the housing 11 when the piston 13 is raised and lowered, and at this time, the sliding operation can be smoothly performed to ensure stable operation of the piston 13. Will be.

And the upper surface and the lower surface of the piston 13 is formed with an annular third mounting groove (13c),

Each of the third mounting grooves 13c further includes a buffer member 19,

The shock absorbing member 19 has an impact applied by the lifting speed when the piston 13 is raised and lowered at a high speed when the piston 13 contacts the bottom surface of the inner chamber of the housing 11 and the bottom surface of the cover 40. Absorption increases the durability by preventing damage to the piston 13,

In addition, the vibration and noise generated in the collision can be reduced to increase the stability during operation of the device and to ventilate the workplace environment.

In the center of the piston 13, an accommodating portion 13d is formed in an upper portion thereof, and a coupling hole 13e is formed in the lower portion of the accommodating portion 13d.

The actuating rod 15 has a lower portion of which is placed in the receiving portion 13d, the lower surface portion of which corresponds to the coupling hole 13e, and a corresponding coupling hole 15a having a screw thread formed therein. By fastening and fixing the coupling hole 13e and the corresponding coupling hole 15a by the coupling bolt B, the piston 13 and the operating rod 15 can be integrated with each other.

In addition, the lower side of the operating rod 15 is provided with an annular receiving groove (15b),

The receiving groove 15b is provided with a third hermetic holding member 16 in the form of an O-ring to be in close contact with the wall surface of the receiving portion 13d of the piston 13 so as to maintain hermeticity. It is desirable to be able to prevent the leakage of air at the bonding site of the).

1 to 4, in the lifting device according to the present invention, the driven unit 20 is

The lifting unit L, which is connected by the driving unit 10 and the intermediate member 30 and is interlocked by receiving the driving force of the driving unit 10, interlocks with each other, serves to move up and down in synchronization. do.

The driven unit 20 according to the present invention is connected to one side of the housing 11 of the drive unit 10, and a plurality of second communicating with the first shaft through part 21a and the first shaft through part 21a. A gear box 21 having a shaft through portion 21b,

A tuning rod 23 provided in the first shaft through portion 21a and having a rack portion 23a exposed to each of the second shaft through portions 21b;

And a linkage rod 25 provided in each of the second shaft through portions 21b and having a pinion portion 25a engaged with the rack portion 23a.

That is, the gear box 21 has a first shaft through-hole 21a having a hollow shape at the center thereof to accommodate the tuning rod 23.

When the gear box 21 is formed in a square shape, the second shaft through portion 21b is formed on different sides, that is, adjacent to each other orthogonal to each other,

It is formed to communicate with the first shaft through portion 21a is accommodated the linkage rod 25.

The tuning rod 23 is accommodated in the first shaft through portion 21a, and an upper portion thereof is exposed to the upper outer side of the first shaft through portion 21a.

At this time, the tuning rod 23 is arranged side by side on one side of the operating rod 15 of the drive unit 10,

It is connected to the operating rod 15 by the intermediate member 30 to move up and down along the first shaft through portion 21a which is interlocked when the operating rod 15 moves up and down.

In addition, on the outer circumferential surface of the lower portion of the tuning rod 23, a rack portion 23a is formed at a position orthogonal on the circumference, that is, at a 180 degree angle on the cut surface of the tuning rod 23,

The rack portion 23a of the tuning rod 23 is arranged to be exposed to the second shaft through portion 21b.

In addition, the linkage rods 25 are respectively accommodated in the second shaft through portion 21b, the rack portion of the tuning rod 23 at the end of the linkage rod 25 on the side accommodated in the second shaft through portion 21b. When the pinion portion 25a is engaged with the 23a, and the tuning rod 23 operates to move up and down.

As the pinion portion 25a engaged with the rack portion 23a rotates and interlocks, the linkage rod 25 interlocks and rotates.

And the linkage rod 25 is connected to each linkage rod 25 of the lifting device (L) systemized as described above to be able to match the tuning of the table (not shown) mounted on the intermediate member 30 ,

Therefore, it is possible to obtain the effect of preventing the eccentric lifting of the lifting device (L) that the eccentric load by the object placed on the table (not shown) by the interlocking rod 25 acts.

In addition, a fourth hermetic holding member 27 is provided at the upper end of the first shaft through portion 21a and the inlet side of the second shaft through portion 21b to ensure the sealing property.

The bearing 29 is provided at the rear of the fourth hermetic holding member 27 provided in the second shaft through the support rod 25 to ensure shaft shaking during rotation and smooth shaft rotation. It is desirable to be able to.

On the other hand, as shown in Figure 6 the outer end of the linkage rod 25 of the driven unit 20 is provided with a shaft coupling body (50),

By connecting the interlocking rods 25 with the leveling shaft 60 by the shaft coupling body 50, the lifting device L is systemized so that the driving device can be synchronized with the driving device.

In addition, the shaft coupling member 50 is formed to enable separation and coupling of the linkage rod 25 and the leveling shaft 60 so that the lifting device L can be easily and easily arranged and configured in various forms. desirable.

1 to 4, in the lifting apparatus according to the present invention, the intermediate member 30 is

Drive unit 20 is connected to one side of the drive unit 10, that is, the drive unit by connecting the tuning rod 23 of the driven unit 20 arranged side by side with the operating rod 15 of the drive unit 10 The driving force of 10 is transmitted to the driven unit 20 to serve as a medium to interlock.

Coupling between the intermediate member 30 and the operating rod 15 of the drive unit 10 and the tuning rod 23 of the driven unit 20 respectively connected to each other, as well as easy separation. It is coupled by a removable means (CS) that can be made.

The detachable means CS is formed on the upper end of the actuating rod 15, the first fastening part 15c having a screw thread formed on the outer surface, and formed on the upper end surface of the tuning rod 23. Is formed second fastening portion 23b,

And formed in the intermediate member 30, the first fastening hole 31 is formed in the screw thread on the inner surface to correspond to the first fastening portion (15c), and formed in the intermediate member 30, the second And a second fastening hole 33 corresponding to the fastening part 23b.

In addition, the first fastening portion 15c and the first fastening hole 31 are fixed by the coupling nut N provided in the first fastening portion 15c,

The second fastening portion 23b and the second fastening hole 33 are inserted through the second fastening hole 33 and coupled by the coupling bolt B fastened to the second fastening portion 23b.

That is, the intermediate member 30 and the actuating rod 15 fasten the first fastening part 15c to the first fastening hole 31, and then rotate the coupling nut N upward to perform the coupling. The nut (N) is fixed to be in contact with the lower surface portion of the intermediate member 30,

In the case of separation, the coupling nut (N) is pulled to separate the intermediate member (30) and the operating rod (15).

In addition, the intermediate member 30 and the tuning rod 23 penetrates the coupling bolt B through the second fastening hole 33 while the intermediate member 30 is placed on the upper surface of the tuning rod 23. After insertion

The coupling bolt (B) is fastened to the second fastening portion (23b) to couple the intermediate member 30 and the tuning rod 23,

In the case of separation, the coupling bolt B is released to separate the intermediate member 30 and the tuning rod 23.

Therefore, the detachable means CS replaces the actuating rod 15 or the tuning rod 23, or both, or replaces parts of the apparatus to raise or lower the set height of the initial state of the lifting apparatus L. It is possible to improve the work efficiency by making maintenance work such as repairing easy and easy.

As shown in FIGS. 1 to 4, a cover 40 is further provided at an upper end of the housing 11 according to the present invention.

The cover 40 includes a body 41 embedded in the housing 11, a body formed in the body 41, a guide hole 43 for the operating rod 15,

A snap ring 45 formed on an upper portion of the body 41 and mounted to an annular insertion groove 11a formed on an inner wall surface of the housing 11 to open and close the cover 40, and the body 41. ) And the first hermetic holding member 47 provided on the wall of the guide hole 43.

That is, the opening and closing of the housing 11 is enabled by the cover 40.

This facilitates maintenance work such as replacement or repair of parts of the drive unit 10, as well as replacing the operating rod 15 to increase or decrease the initial height of the lifting device L. This is to improve work efficiency by ensuring convenience.

Therefore, the guide hole 43 in the cover 40 is inserted into the operating rod 15,

In order to facilitate the lifting operation of the operating rod 15, the inner diameter thereof is formed larger than the outer diameter of the operating rod 15,

In this case, in order to maintain the airtightness of the gap caused by the size difference between the guide hole 43 and the operation rod 15, an annular set-up groove 43a is formed in the upper wall surface of the guide hole 43,

The first hermetic holding member 47 is seated in the settling groove 43a to prevent the air introduced into the second intake and exhaust part 12B from leaking.

In addition, the first hermetic holding member 47 is seated in the annular settling groove 41b formed on the outer surface of the body 41 for the same purpose that the air introduced into the second intake and exhaust portion 12B is leaked. It is desirable to be able to prevent it.

In addition, the snap ring 45 in the cover 40 is mounted in the insertion groove (11a) formed on the inner wall of the housing 11,

The body 41 is an annular guide groove 41a for accommodating the displacement of the snap ring 45 at a position corresponding to the insertion groove 11a to separate the cover 40 from the housing 11. When the snap ring 45 is pinched, the snap ring 45 is accommodated in the guide groove 41a so that the cover 40 can be separated.

In addition, both ends of the snap ring 45 is provided with an injection hole (not shown) for accommodating a tool to retract the snap ring 45,

The housing 11 or the cover 40 is provided with insertion holes (not shown) formed to correspond to the respective injection holes,

The cover 40 may be separated from the housing 11 by displacing the tool into the insertion hole and displacing the snap ring 45 by applying a constant force while being inserted into the insertion hole of the snap ring 45.

In addition, the snap ring 45 is preferably provided on the upper portion of the first hermetic holding member 47 provided in the body 41 to more effectively exhibit the sealing property.

In addition, the upper end portion of the inner chamber of the housing 11 is formed with a stepped portion 11b having an expanded diameter,

In addition, the cover 40 is formed on the upper portion of the body 41 of the cover 40 so that the corresponding catching portion 41c corresponding to the catching portion 11b of the housing 11 is formed and placed therein. It is desirable to prevent infiltration into the inner chamber.

In addition, the guide hole 43 of the cover 40 and the first shaft through portion 21a have a ring shape to prevent shaft shaking when the operating rod 15 and the tuning rod 23 are lowered. The guide member 70 is further provided,

Since the guide member 70 generates friction between the operating rod 15 and the tuning rod 23, it is preferable to use a material having a low frictional resistance value.

Furthermore, as shown in Figure 5 as another modification of the lifting device according to the present invention

It is built in the housing 11, the upper or lower portion of the piston 13 is further provided with an elastic member (80).

5 (a) is a form in which the elastic member 80 is arranged on the piston 13,

In this case, the air for the operation of the piston 13 flows in and out of a constant pressure by the second intake and exhaust part 12B located at the bottom of the piston 13.

That is, the piston 13 is raised and lowered while air of a constant pressure flows into the second intake and exhaust part 12B through the second air hole 12b while the piston 13 is lowered.

On the contrary, when the piston 13 descends, when the air of the second intake and exhaust part 12B is discharged through the second air hole 12b, the elastic member 80 exerts elasticity so that the piston 13 Will help to lower.

5 (b) is in the form in which the elastic member 80 is arranged below the piston 13,

In this case, the air for operating the piston 13 flows in and out a constant pressure by the first intake and exhaust part 12A located on the upper portion of the piston 13.

That is, the piston 13 is lowered while air of a constant pressure flows into the first intake and exhaust part 12A through the first air hole 12a while the piston 13 is lifted,

On the contrary, when the piston 13 moves up and down, when the air of the first intake and exhaust part 12A is discharged through the first air hole 12a, the elastic member 80 exerts elasticity so that the piston 13 Will help to elevate.

Accordingly, when the elastic member 80 is introduced, the piston 13 is moved up and down by one of the intake and exhaust portions of the air intake and exhaust portion and the elastic member 80, whereas

When the elastic member 80 is not introduced, the intake and exhaust unit is configured in a double-acting form provided on both the upper and lower portions of the piston 13 as described above.

In addition, in the case of introducing the elastic member 80, as well as the operation of the piston 13, as described above, it is not only possible to configure the intake and exhaust portion 12 above or below the piston 13,

In consideration of the elastic modulus of the elastic member 80 and its size, the lifting device L can be compactly configured.

In the above description of the present invention with reference to the accompanying drawings, the lifting device has been described with a particular shape and direction, the present invention can be variously modified and changed by those skilled in the art, such variations and modifications are within the scope of the present invention It should be interpreted as being included.

L: Lifting device CS: Desorption means
B: Binding bolt N: Binding nut
10: drive unit 11: housing
11a: insertion groove 11b: locking portion
12: intake and exhaust section 12A, 12B: first and second intake and exhaust section
12a, 12b: first and second air holes 13: piston
13a, 13b, 13c: 1st, 2nd, 3rd mounting groove
13d: receiving portion 13e: coupling hole
15: operating rod 15a: corresponding coupling hole
15b: receiving groove 15c: first fastening portion
16: third hermetic holding member 17: second hermetic holding member
18: lubrication band 19: buffer member
20: driven unit 21: gearbox
21a: first photoluminescent tube portion 21b: second photoluminescent tube portion
23: tuning rod 23a: rack portion
23b: second fastening portion 25: interlocking rod
25a: Pinion part 27: Fourth confidential member
29: bearing
30: intermediate member 31: the first fastening hole
33: second fastening hole
40: cover 41: body
41a: Guide groove 41b: Settle groove
41c: corresponding catch portion 43: guide hole
43a: settle groove 45: snap ring
47: first hermetic holding member
50: shaft coupling body
60: leveling shaft
70: guide member
80: elastic member

Claims (4)

A housing having an intake and exhaust section at the top and the bottom;
A piston embedded in the housing and provided between the intake and exhaust sections and configured to move up and down;
A drive unit including an operation rod connected to the piston;
A gear box having a first shaft through portion, and a plurality of second shaft through portions communicated with the first shaft through portion;
A tuning rod provided in said first shaft through portion and having a rack portion exposed to each of said second shaft through portions;
And a linkage rod provided on each of the second shaft through portions and having a pinion portion engaged with the rack portion.
A driven unit connected to one side of the driving unit; And
An intermediate member for connecting each of the outer ends of the operation rod and the tuning rod and interlocking the driven unit by the driving unit;
Lifting device comprising a. The method of claim 1, wherein in the drive unit
The upper end of the housing is further provided with a cover,
The cover is
A body embedded in the housing,
It is formed in the body, and the guide hole for the operation rod,
A snap ring formed on an upper portion of the body and mounted to an annular insertion groove formed on an inner wall surface of the housing to enable opening and closing of the cover;
And a first hermetic holding member provided on the outer wall surface of the body and the guide hole wall surface. The method of claim 1,
The medium member, the operation rod and the tuning rod is further provided with a detachment means,
The detachable means is
A first fastening part formed at an upper end of the operation rod and having a thread formed on an outer surface thereof;
A second fastening part formed on an upper surface of the tuning rod and having a thread formed on an inner surface thereof;
A first fastening hole formed in the intermediate member and having a screw thread formed on an inner surface thereof to correspond to the first fastening portion;
It is formed in the intermediate member, and comprises a second fastening hole corresponding to the second fastening portion,
The first fastening portion and the first fastening hole are fixed by the coupling nut provided in the first fastening portion,
The second fastening portion and the second fastening hole is a lifting device, characterized in that coupled by the coupling bolt is inserted into the second fastening hole and fastened to the second fastening portion. The drive unit according to any one of claims 1 to 3, wherein
Upper and lower portions of the piston are further provided with a second hermetic material,
A lubrication band is further provided between the second hermetic holding members.
A buffer member is further provided on the upper and lower surfaces of the piston,
Lifting device, characterized in that the elastic member is built in the housing, arranged on the upper or lower portion of the piston.

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