KR20140005409U - Assembly type lifting apparatus - Google Patents

Abstract

The present invention relates to a prefabricated lifting apparatus comprising a pair of support members installed in a vertical direction, a pair of elevating members mounted on the pair of supporting members so as to be able to move up and down, A main beam, and a pair of elevating members respectively provided on the pair of supporting members to elevate and operate the main beam, thereby providing an effect of being easily assembled even in a limited space.

Description

[0001] ASSEMBLY TYPE LIFTING APPARATUS [0002]

The present invention relates to a prefabricated lifting device for lifting a frame to a predetermined height on an onshore or an offshore.

A lifting device (aka "A-frame") is usually used to pick up heavy objects that can not be seen by people in various environments, whether onshore or offshore, and transport them within a certain interval.

When a lifting device is used in an onshore or a shop, since the space around it is wide and the floor is flat, the wheel is mounted on the lower end of the lifting device in consideration of mobility. Accordingly, since the lifting device can be moved to a desired position by using the wheels, utilization of the lifting device is improved.

On the other hand, in the offshore, a grating is applied as a whole to the remaining floors except for a part covered with a plate, and a tight spatial arrangement is made to increase the utilization of the limited space.

Accordingly, when the lifting device is used in the offshore, it is difficult to apply the wheel to the floor of the lifting device, and when the wheel is applied, the lifting device can not be stably installed.

In order to solve this problem, the lifting device used for the offshore is designed in a folderable structure or a field assembly structure to be installed. In order to lighten the lifting device, aluminum and aluminum are used instead of a carbon steel material. It is made of light metal material.

For example, the following Patent Documents 1 and 2 disclose a lifting apparatus according to the prior art.

In the following Patent Document 1, there are provided a plurality of lifting devices provided in a fixed frame and a plurality of supports for fixing and supporting the lower surface of the rotary table so as to stably fix the rotary table at a certain height, A jig for easy rotary table installation is disclosed.

The following Patent Document 2 discloses an indoor lifting apparatus configured to be used for lifting and transporting heavy objects in a space where a ceiling such as a factory or a work site is low and a large-capacity crane is difficult to install.

Korean Patent Publication No. 10-2012-0129463 (published on November 28, 2012) Korean Patent Publication No. 10-2002-0021662 (published on March 21, 2002)

However, assembling lifting devices in confined spaces is possible for experienced workers, but is very difficult for unskilled workers.

Particularly, in assembling the main beam, which is the most important part in which the trolley hoist is operated in the lifting apparatus, the operator must perform the work of lifting the main beam to the height required for actual use after assembling at the lowest height at which the main beam can be assembled.

Therefore, conventionally, a separate scaffolding is installed, and the main beam of the lifting apparatus is assembled on the scaffolding, thereby deteriorating workability and causing safety accidents due to fall of the operator or the like.

For this reason, the prefabricated lifting apparatus according to the prior art has a limitation in practical use even if it is designed as a foldable structure or a field assembly structure for convenience of use.

The object of the present invention is to provide a prefabricated lifting apparatus which can be assembled in a limited space.

Another object of the present invention is to provide a prefabricated lifting device capable of height adjustment of the main beam.

In order to accomplish the above object, the present invention provides a prefabricated lifting device comprising: a pair of support members installed in a vertical direction; a pair of lifting and lowering members installed on the pair of support members so as to be movable up and down, A main beam provided between the upper ends of the pair of elevating members, and a lift operating portion provided on the pair of supporting members, respectively, for elevating and lowering the pair of elevating members and the main beam.

The lifting and lowering operation portion includes a wire connected to a lower end of the lifting member, a drum on which the wire is wound, an operation handle provided on one side of the drum and rotated by an operator, And a gear unit for rotating the drum to rotate the drum.

The gear unit includes a driving gear provided on a driving shaft connected to the operation handle and a plurality of planetary gears provided to engage with the driving gear, and a gear engaged with the planetary gear is formed on an inner circumferential surface of the drum .

The lifting and lowering operation unit may further include a ratchet unit installed at one side of the drum to prevent the drum from rotating in the reverse direction due to the load of the main beam in the process of lifting the main beam.

Wherein the ratchet pawl includes: a ratchet gear provided inside the manipulating handle; a ratchet pawl which rotates the drum only in one direction and fixes the ratchet gear to prevent rotation in the opposite direction; and an operation for moving the ratchet pawl forward or backward And a knob.

And the elevating operation portion is a manual winch.

Wherein the pair of support members includes a pair of inclined members each provided in an A shape, a horizontal member provided at a lower end of the pair of inclined members, and a plate provided at an upper end of the pair of inclined members, At least one engaging hole is formed through which the engaging pin is inserted, and the elevating member is formed with a plurality of engaging holes through which the engaging pin is inserted.

And a trolley hoist is installed on the main beam to lift the heavy beam and horizontally move the heavy beam.

As described above, according to the prefabricated lifting apparatus according to the present invention, it is possible to easily assemble even in a limited space.

That is, according to the prefabricated lifting apparatus according to the present invention, the main beam can be assembled at a height at which the operator can assemble, and the height of the main beam can be raised by adjusting the height of the main beam.

Accordingly, according to the prefabricated lifting apparatus according to the present invention, there is no need to provide a scaffold separately provided for assembling the main beam, so that the assembling performance of the prefabricated lifting apparatus can be improved and the working time can be shortened .

Further, according to the prefabricated lifting apparatus according to the present invention, since the gear unit using the planetary gear is provided, the operation force applied by the operator to the operation handle is minimized in order to raise the main beam, so that the height of the main beam can be easily adjusted .

Further, according to the present invention, since the ratchet unit is provided in the lifting and lowering operation portion, the main beam is lowered in the process of adjusting the height of the main beam, The effect of being prevented from falling due to carelessness or mistakes can be obtained.

According to the prefabricated lifting apparatus according to the present invention, since it is not necessary to use a separate scaffold, it is possible to prevent a safety accident that may occur during the main beam assembling process and to prevent an injury such as a worker's injury or a musculoskeletal system Loses.

1 is a perspective view of a prefabricated lifting apparatus according to a preferred embodiment of the present invention,
Fig. 2 is an enlarged perspective view of the supporting member and the lifting and lowering operating portion shown in Fig. 1,
3 is a cross-sectional view of the lifting /
4 is an exploded perspective view of the ratchet unit,
FIG. 5 is a front view showing a state in which the assembled lifting apparatus according to the preferred embodiment of the present invention is assembled;
6 is an operational state view showing a state in which the main beam shown in FIG. 5 is raised.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a prefabricated lifting apparatus according to a preferred embodiment of the present invention, and FIG. 2 is an enlarged perspective view of the support member and the lifting and lowering operation portion shown in FIG.

As shown in FIG. 1, a prefabricated lifting apparatus according to a preferred embodiment of the present invention includes a pair of support members 10 installed vertically, a pair of support members 10, A main beam 30 provided between the upper ends of the pair of elevating members 20 and a pair of elevating members 20 provided on the pair of supporting members 10, And a lifting and lowering operation unit 40 for lifting and lowering the main beam 30.

The pair of support members 10 includes a pair of inclined members 11 provided in an A shape, a horizontal member 12 provided at a lower end of the pair of inclined members 11, and a pair of inclined members 11, And a plate 13 installed at the upper end.

As shown in FIG. 2, the plate 13 may have a trapezoidal shape whose length is longer than the length of the upper surface, and may be provided on the outer surface and the inner surface of the pair of inclined members 11, respectively.

The plate 13 may be provided with a coupling hole 14 to which a fixing pin 15 for fixing the elevating member 20 is coupled.

A plurality of coupling holes 14 may be formed at regular intervals along the vertical direction of the plate 13 so as to stably support the main beam 30, the elevating member 20, .

Similarly, a plurality of fixing holes 21 may be formed in the elevating member 20 at regular intervals along the vertical direction.

Between the elevation member 20 and the main beam 30, a main beam 30 and a support bar 22 for supporting a load of a heavy object may be further installed.

The support bar 22 may be connected to a lower end of the lifting member 20 and a lower surface of the main beam 30.

The main beam 30 is provided with a trolley hoist 31 horizontally movably so as to lift a heavy object such as a frame to be operated.

For this purpose, the main beam 30 may be provided as an I-beam.

The trolley hoist 31 serves to lift and move the heavy beam along the main beam 30.

That is, the trolley hoist 31 includes a trolley 32 for moving the heavy object in the horizontal direction and a hoist 33 for moving the heavy object in the vertical direction. At the lower end of the hoist 33, A hook 34 may be provided.

The elevating operation portion 40 is provided on the plate 13 provided on the pair of support members 10 and functions to lift the elevating member 20 up and down. For example, the elevating operation unit 40 may be provided as an electric winch, but may be provided as a manual winch in which no separate power unit is provided.

The construction of the lifting and lowering operating portion will be described in detail with reference to Figs. 2 and 3. Fig.

3 is a sectional view of the lifting and lowering operation portion.

The elevating operation portion 40 includes a wire 41 connected to the lower end of the elevation member 20, a drum 42 on which the wire 41 is wound, a handle 42 mounted on one side of the drum 42, And a gear unit 44 that rotates by the rotation of the operating handle 43 and rotates the drum 42 to wind the wire 41. [

A hook (not shown) may be provided at one end of the wire 41 so as to be connected to the lower end of the elevating member 20. A hook may be formed at one end of the wire 41 as shown in FIG. And may be fixed to the lower end of the lifting member 20.

The gear unit 44 may include a driving gear 441 mounted on a driving shaft connected to the operating handle 43 and a plurality of planetary gears 442 engaged with the driving gear 441.

The drum 42 is engaged with the rotational force of the planetary gear 442 so as to move the lifting member 20 and the main beam 30 upward so that a gear engaged with the planetary gear 442 is formed on the inner peripheral surface of the drum 42. [ So that the warper 41 is wound.

As described above, the present invention has the gear unit using the planetary gear, so that the operation force applied to the operation handle by the operator is minimized to raise the main beam, so that the height of the main beam can be easily adjusted.

The lifting and lowering operation unit 40 is provided on one side of the drum 42 to prevent the drum 42 from rotating in the reverse direction due to the load of the main beam 30 in the process of lifting the main beam 30, (45).

The configuration of the ratchet unit will be described in detail with reference to Fig.

For example, Figure 4 is an exploded perspective view of the ratchet unit.

4, the ratchet unit 45 includes a ratchet gear 451 provided at an inner tip of the operation handle 43, a ratchet gear 451 rotatably supported on the drum 42 to rotate only in one direction and to prevent rotation in the opposite direction A ratchet pawl 452 for fixing the ratchet gear 451 and an operation knob 453 for moving the ratchet pawl 452 forward or backward.

The ratchet gear 451 and the ratchet pawl 452 are provided on the inner side of any one of a pair of brackets on which the rotary shaft of the drum 42 is installed and the operation knob 453 is provided on the inner surface of the bracket, The ratchet pawl 452 is moved forward or backward.

Next, referring to Figs. 5 and 6, the joining relationship and the operation method of the prefabricated lifting apparatus according to the preferred embodiment of the present invention will be described in detail.

FIG. 5 is a front view showing a assembled lifting apparatus according to a preferred embodiment of the present invention, and FIG. 6 is an operational state view showing a state in which the main beam shown in FIG. 5 is raised.

First, as shown in Fig. 5, the operator arranges the pair of inclined members 11 in a substantially A-shape, and connects the plate 13 to the top of the pair of inclined members 11. [ Subsequently, a horizontal member 12 is provided between the lower ends of the pair of inclined members 11 to assemble the pair of supporting members 10.

Then, the worker mounts the lifting and lowering operating part 40 on the plate 13 provided on the outside of the supporting member 10. [

At this time, the ascending / descending operation section 40 is provided with a gear unit 442 including a driving gear 441 and a plurality of planetary gears 442 in the drum 42, and a ratchet unit 45, and the operation handle 43 is coupled to the drum 42 at one side.

Subsequently, the worker places the elevating member 20 in a space between the pair of plates 13 provided on the supporting member 10, and assembles the elevating member 20 so that the elevating member 20 can move up and down.

At this time, the elevating member 20 is set to a height that is lower than a set height, for example, about 2 m, for elevating the heavy object by using the actual main beam 30 so that the worker can easily assemble the main beam 30, The main beam 30 is positioned at a height of about 1.3 m.

The worker connects the tip end of the wire 41 wound around the drum 42 of the elevation control section 40 to the lower end of the elevation member 20. Then,

Subsequently, the operator assembles the main beam 30 on the upper side of the pair of lifting members 20. [

As such, the present invention does not require a scaffold separately provided for assembling the main beam as the operator assembles the main beam at a height at which the operator can assemble.

Accordingly, the present invention can easily assemble the main beam, thereby improving the assemblability of the assembled lifting apparatus and shortening the working time.

When the assembling of the main beam 30 is completed, the two operators rotate the operation handle 42 provided on the pair of the elevation operation portions 40 to rotate the pair of elevation members 20 .

At this time, the lifting and lowering operation unit 40 uses the gear unit 44 provided therein to exert a remarkably small force on the main beam 300 and the lifting member 20 in comparison with the force for actually raising the main beam 30 Thereby making it possible to perform a lift operation.

The lift operation unit 40 rotates the drum 42 only in the direction in which the wire 41 is wound by using the ratchet unit 45 provided therein and prevents the reverse rotation of the wire 41. The height adjustment of the main beam 30 It is possible to prevent the main beam 30 from dropping due to carelessness or mistake of the operator.

As described above, the present invention can improve the assemblability of the assembled lifting device by adjusting the height of the elevating member and the main beam by using the elevating operation portion.

When the main beam 30 rises to a preset height so that the main beam 30 can lift and move the heavy object, the worker presses the engagement hole 14 formed in the plate 13 of the support member 10 and the elevation member 20 The elevating member 20 is fixed by engaging the fixing pin 15 so as to pass through the fixing hole 21. [

Thereafter, the operator installs a trolley hoist 31 on the main beam 30, hooks a chain or a wire connected to the heavy object to the hook 34 provided below the trolley hoist 31, lifts the heavy object, and horizontally moves the heavy object to a desired position .

Through the above process, the present invention can adjust the height of the main beam by installing the elevating member and the main beam on the supporting member so that the elevating member and the main beam can be rotated, and rotating the operating handle of the elevating and operating unit.

Although the embodiments of the present invention have been described in detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and various modifications may be made without departing from the scope of the present invention.

10: support member 11:
12: Horizontal member 13: Plate
14: engaging hole 15: fixing pin
20: lifting member 21:
22: support bar 30: main beam
31: Trolley hoist 32: Hoist
33: trolley 34: hook
40: a lifting / lowering operation part 41: a wire
42: Drum 43: Operation handle
44: gear unit 441:
442: planetary gears 443: internal gears
45: ratchet unit 451: ratchet gear
452: ratchet pole 453: operation knob

Claims (8)

A pair of support members 10 installed in the vertical direction,
A pair of elevating members 20 mounted on the pair of supporting members 10 so as to be movable up and down,
A main beam 30 installed between the upper ends of the pair of elevating members 20,
And a lift operation part (40) installed on the pair of support members (10) for moving the pair of lifting members (20) and the main beam (30) up and down. 2. The apparatus according to claim 1, wherein the elevating operation portion (40)
A wire 41 connected to the lower end of the elevation member 20,
A drum 42 on which the wire 41 is wound,
An operation handle 43 installed at one side of the drum 42 and rotated by an operator,
And a gear unit (44) for rotating the drum (42) so as to rotate by the rotation of the operation handle (43) to wind the wire (41). 3. The method of claim 2,
The gear unit 44 includes a driving gear 441 mounted on a driving shaft connected to the operating handle 43,
And a plurality of planetary gears (442) arranged to be engaged with the driving gear (441)
And a gear engaged with the planetary gear (442) is formed on an inner circumferential surface of the drum (42). 3. The apparatus according to claim 2, wherein the elevating operation portion (40)
And a ratchet unit 45 installed at one side of the drum 42 to prevent the drum 42 from rotating in the reverse direction due to the load of the main beam 30 in the course of raising the main beam 30 ≪ / RTI > 5. The apparatus of claim 4, wherein the ratchet unit (45)
A ratchet gear 451 provided inside the operating handle 43,
A ratchet pawl 452 for fixing the ratchet gear 451 to allow the drum 42 to rotate only in one direction and to prevent rotation in the opposite direction,
And an operation knob (453) for moving the ratchet pawl (452) forward or backward. 6. The method according to any one of claims 1 to 5,
Wherein the lifting and lowering operation part (40) is a manual winch. The method according to claim 6,
The pair of support members 10 includes a pair of inclined members 11,
A horizontal member 12 provided at the lower end of the pair of inclined members 11,
And a plate (13) provided at an upper end of the pair of inclined members (11)
At least one coupling hole 14 through which the fixing pin 15 is inserted is formed in the plate 13,
Wherein the elevating member (20) is provided with a plurality of fixing holes (21) through which the fixing pins (15) are inserted. 8. The method of claim 7,
Wherein the main beam (30) is provided with a trolley hoist (31) for lifting and moving the heavy material horizontally.

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