KR101646739B1 - Apparatus for descent - Google Patents

Apparatus for descent Download PDF

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Publication number
KR101646739B1
KR101646739B1 KR1020160020529A KR20160020529A KR101646739B1 KR 101646739 B1 KR101646739 B1 KR 101646739B1 KR 1020160020529 A KR1020160020529 A KR 1020160020529A KR 20160020529 A KR20160020529 A KR 20160020529A KR 101646739 B1 KR101646739 B1 KR 101646739B1
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KR
South Korea
Prior art keywords
wedge
fixing
pressing
string
steel rod
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KR1020160020529A
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Korean (ko)
Inventor
윤영언
Original Assignee
삼호쏘일텍(주)
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Application filed by 삼호쏘일텍(주) filed Critical 삼호쏘일텍(주)
Priority to KR1020160020529A priority Critical patent/KR101646739B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods

Abstract

The present invention relates to a descending device capable of largely improving economic feasibility by reducing construction periods and improving workability by minimizing works performed using human resources, in a descent work of a slab support frame using a suspension steel rod in a top down method. According to the present invention, the descending device comprises: the suspension steel rod having a thread on the outer circumference, wherein a heavy object is combined with a lower end thereof; a base plate having a through hole in order for the suspension steel rod to pass through the center thereof; a pressing fixing unit selectively pressing and fixing the outside of the suspension steel rod by being installed on the upper part of the base plate; a lifting jack installed in the upper part of the pressing fixing unit and comprising a cylinder of the lower part, wherein the suspension steel rod passes through the inside, and a ram ascending and descending to the upper part of the cylinder; and an upper fixing unit installed in the upper part of the ram of the lifting jack and comprising a wedge cone having a wedge hole formed on the inner circumference and a wedge selectively fixing the suspension steel rod by being inserted into the wedge hole. The pressing fixing unit comprises: a pair of pressing plates formed on both sides of the suspension steel rod as a semi-circular fixing groove in which a female thread engaged with the thread of the suspension steel rod is formed on the inner side is individually formed on the center of the suspension steel rod; and a gap control unit pressing and fixing the suspension steel rod by the pair of the pressing plates by controlling the gap between the pressing plates as the gap control unit is connected to the pair of the pressing plates.

Description

Apparatus for descent

The present invention relates to a lowering apparatus capable of improving workability and shortening the air flow and greatly improving the economical efficiency by minimizing workforce during a down operation such as a bottom support frame using a current receiving steel bar in a backhoe process.

When constructing an underground structure at a place where the construction is unfavorable, such as downtown construction, the slab is constructed in the order of the upper layer to the lower layer in the method of performing the construction from the ground to the underground direction.

Therefore, the bottom supporting frame for the floor slab construction is installed first, the bottom slab is laid, the bottom supporting frame is lowered after lowering the floor supporting frame after hardening the slab concrete, and then the lower floor bottom slab is constructed again .

Conventionally, when a heavy object such as a bottom support frame is lowered, a hydraulic jack is used.

However, it is difficult to visually confirm that the wire rope is broken by using the wire rope as the suspension material connecting the heavy objects. Further, since the wire rope must be wound around the entire circumference of the winding drum and provided at every position, it is difficult to manage the material because of its large volume and weight.

In order to solve these difficulties, steel rods which are very easy to manage due to their lack of volume and weight are used as suspension materials.

When using steel rods as suspension materials, use upper and lower unit steel rods as couplers.

However, since the diameter of the coupler connecting the unit steel rods is larger than the diameter of the unit steel rods, it is necessary to develop a descending device so that the coupler protrudes outside the steel bar so that the coupler can pass through.

Conventional patent publication No. 10-1197713 discloses a conveying apparatus using a steel rod as a hanging material (Fig. 1).

In the above-described registration technique, the lower fixing part 50 for fixing the bar is selectively supported by the lower supporting part 60.

In the case of using the registration technique, the lower fixing part 50 should be lowered by a predetermined height while the bar is fixed, and then the lower fixing part 50 should be raised again by the attractive force.

However, since the lower fixing portion 50 can reciprocate only between the tension jigs in the lower portion of the hydraulic cylinder 30, the one-time lowering length of the bar is limited to the tension jig height.

In addition, not only the lower fixing part 50 must be raised by the force each time the bar is lifted or lowered, but also the support 60 supporting the lower fixing part 50 must be repeatedly installed and dismantled by a human force, There is a drawback that it takes a long time.

In addition, in the case where there is a coupling member (M) connecting upper and lower bars, there is a difficulty in disassembling the lower fixing portion (50) for passing the coupling member (M) through the bar. It is not possible to use the lower fixing portion 50 of a long nut-shape having a long length in the vertical direction.

In order to solve the above-mentioned problems, the present invention provides a descent device which can reduce the work time required by moving a member such as a bottom supporting frame to a lower layer by using a present receiving steel bar in a back- I want to.

The present invention is intended to provide a descending device capable of descending a current receiving rod without being bound thereto even when a coupler is coupled to the outside of the current receiving rod.

According to a preferred embodiment of the present invention, there is provided a wire rod comprising: a string receiving rod having a weight formed on a lower end thereof and having threads formed on an outer circumferential surface thereof; A base plate having a through hole formed at a center thereof so as to allow the string to be passed therethrough; A plurality of semicircular fixing grooves are formed in the center of the proximal side of the proximal side of the proximal end of the base plate so as to be engaged with the threads of the proximal end of the proximal end A pair of pressure plates provided on both sides of the current accepting steel bar, and a gap adjusting unit which is coupled between the pair of pressure plates to adjust the interval of the pressure plates so that the pair of pressure plates selectively press- government; A rising / lowering jack provided on the pressurized fixing unit, the lowering cylinder consisting of a lower cylinder and a ram that ascends / descends to the upper portion of the cylinder, A wedge cone provided on an upper portion of the ram of the up / down jack and having a wedge hole formed on an inner circumferential surface thereof, a wedge inserted into the wedge hole and segmented into a plurality of planar units to selectively fix the wedge- An upper fixing part formed of a magnet provided at a site where the unit meets and joining neighboring units; And a pedestal which is positioned between the base plate and the raising and lowering jack and is composed of an upper support plate and a plurality of legs provided at a lower portion of the upper support plate and supports a lower portion of the raising and lowering jack; Wherein a long elongated hole is formed in the pressing plate so as to penetrate the leg portion of the pedestal in a moving direction of the pressing plate to guide a linear reciprocating motion of the pressing plate, After the lowering is completed, the pressure fixing portion fixes the outside of the current receiving steel bar, the wedge is released, and the wedge fixes the outside of the current receiving steel bar and the pressure fixing portion is released Thereby providing a descent device.

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According to another preferred embodiment of the present invention, a stopper is coupled to an outer surface of each pressure plate on the upper surface of the base plate.

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According to another preferred embodiment of the present invention, the gap adjusting unit is connected to the up / down jack so that the gap adjusting unit is driven just before the lowering of the ram after the elevation of the ram to open the platen and the gap adjusting unit after the ram descent is driven, And a control unit for controlling the control unit.

According to another preferred embodiment of the present invention, a plurality of rows of grooves are circumferentially formed on the outer circumferential surface of the wedge and the inner circumferential surface of the wedge hole.

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The present invention has the following effects according to the present invention.

First, the pressing rod can be moved downward by selectively fixing and releasing the receiving rod at the upper and lower portions, respectively. Therefore, by using hydraulic jacks and the like, it is possible to minimize the manpower work, and the work time required for the lowering work of the bottom supporting frame using the present receiving steel bar can be greatly shortened in the backhoe method and the like.

Second, since the press-fit fixing portion selectively fixes the outside of the string-accepting steel rod, the string-accepting steel rod to which the coupler is coupled to the outside can be also used without limitation.

1 is a longitudinal sectional view of a conventional lowering device.
2 is a perspective view of the descent apparatus of the present invention.
3 to 7 are longitudinal sectional views of the descending device of the present invention showing the descending process of the present receiving steel bar.
8 is a perspective view showing details of the pressure fixing portion.
9 is a perspective view showing a pressure plate whose gap is adjusted by a stopper.
10 (a) to 10 (c) are cross-sectional views showing a process in which the pressurizing and fixing portion of the embodiment of Fig.
11 is a perspective view showing a part of the descent apparatus of the present invention provided with a pedestal.
Figs. 12 (a) to 12 (b) are longitudinal sectional views showing a process of releasing the fixing of the suspension rod by the pressurizing and fixing unit in the embodiment of Fig.
13 is a longitudinal sectional view showing an embodiment of a pedestal.
14 is a side view of the descent apparatus of the present invention having a control unit.
15 is a perspective view showing an embodiment of a wedge cone;
16 is a perspective view showing an embodiment of a wedge;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

FIG. 2 is a perspective view of the descent apparatus of the present invention, and FIGS. 3 to 7 are longitudinal sectional views of the descent apparatus of the present invention showing a descending process of the present encasement steel bar.

As shown in FIG. 2, the descent apparatus of the present invention includes a string-accepting steel bar 2 having a weight T 1 coupled to the lower end thereof and having a thread T 1 formed on the outer surface thereof; A base plate (3) having a through hole (31) formed at the center thereof so as to allow the above - mentioned string receiving rod (2) to pass therethrough; And the threaded portion T 1 of the string 2 is provided at the center of the string 2 at the center of the string 2 by tightly pressing and fixing the outside of the string 2. A pair of pressing plates 41a and 41b provided on both sides of the string 2 for receiving and forming a semicircular fixing groove 411 having a female thread T 2 meshing with the pair of pressing plates 41, A gap adjusting portion 42 which is coupled between the pair of pressing plates 41a and 41b to adjust the distance between the pressing plates 41a and 41b so that the pair of pressing plates 41a and 41b selectively press- A pressurizing and fixing unit 4; And a lifting jack 51 which is provided on the upper portion of the pressure fixing portion 4 and is composed of a lower cylinder 51 and a ram 52 which ascends and descends to the upper portion of the cylinder 51, (5); A wedge cone 61 provided on an upper surface of the ram 52 of the lifting jack 5 and having a wedge hole 62 formed on an inner circumferential surface thereof, An upper fixing part 6 composed of a wedge 63 that is segmented into a plurality of planar units for fixing and a magnet 64 that is provided at a portion where each unit on the wedge 63 meets and which is connected to a neighboring unit, ; And a plurality of leg portions 71 provided under the upper support plate 72 and the upper support plate 72 and positioned between the base plate 3 and the up / down jack 5, A pedestal 7 for supporting a lower portion of the pedestal 7; A long hole 412 having a long length is formed in the moving direction of the pressing plates 41a and 41b so that the pressing plates 41a and 41b are connected to the legs 71 of the pedestal 7, And 41b and the pressing and fixing unit 4 guides the linearly reciprocating motion of the current receiving rod 2 after the wedge 63 fixes the outside of the rod 2 The wedge 63 is released from the fixing and the wedge 63 fixes the outside of the string 2 after the ram 52 is completely raised and the pressing and fixing unit 4 And the fixing is released.

The lowering device of the present invention comprises a stringer 2, a base plate 3, a pressure fixing portion 4, a lifting jack 5, an upper fixing portion 6 and a pedestal 7.

A heavy supporting member such as a bottom supporting frame is coupled to the bottom of the string 2.

To this end, a connecting member 21 for connecting a heavy object can be connected to the bottom of the current receiving steel bar 2.

The connecting member 21 is fixed to a heavy object with a shackle or the like.

When the descending device of the present invention is used in the backhoe method, a moving hole 11 for moving the coupler coupled to the current receiving rod 2 and the current receiving rod 2 is formed in the upper layer floor 1 where the concrete is placed .

The base plate 3 has a through hole 31 formed at the center of the base plate 3 so as to allow the string 2 to pass therethrough.

The base plate 3 is positioned on the floor 1 in an area sufficient to stably support the upper pressing and fixing part 4, the elevating and lowering jack 5 and the upper fixing part 6.

 The pressing and fixing unit 4 is provided on the base plate 3 to selectively fix the outside of the string 2.

The pressurizing and fixing unit 4 is located below the elevating and lowering jack 5 and is configured to selectively grip the current receiving steel bar 2. [

At the time of lowering of the string 2, the pressing and fixing unit 4 releases the fixing of the string 2. As a result, the string-accepting steel bar 2 to which the coupler is coupled can be lowered without any problem.

The upward and downward jack 5 is provided on the upper portion of the pressure fixing part 4 and is connected to the lower cylinder 51 and the ram 52 ).

The up / down jack 5 is composed of a cylinder 51 and a ram 52.

The cylinder (51) and the ram (52) are hollow cylindrically shaped so that the string of the present invention can pass through the cylinder (51) and the ram (52).

The ram 52 is movable upward and downward within the cylinder 51 and is movable by a screw jack or a rack jack, but is preferably operated by a hydraulic jack so as to enable stable operation in order to lower the weight.

In this case, the hydraulic line 53 is provided, and since the ram 52 must be driven by the hydraulic pressure, the hydraulic jack can use a double-acting type.

The upper fixing part 6 is provided on the ram 52 of the lifting jack 5 and includes a wedge cone 61 having a wedge hole 62 formed on its inner circumferential surface, A wedge 63 that is segmented into a plurality of planar units for selectively fixing the steel rods 2 and a magnet 64 that is provided at a portion where each unit on the wedge 63 meets and which joins adjacent units do.

The wedge hole 62 in the wedge cone 61 may be formed as a tapered surface having an inclined surface so as to decrease in diameter from the upper portion to the lower portion and the outer peripheral surface of the wedge 63 may be inserted into the wedge hole 62 So that the tapered surface can be formed.

The wedge 63 can selectively fix the outside of the string 2 for descending the string 2.

3 to 7, which will be described later, the pressing and fixing unit 4 and the elevating and lowering jack 5 selectively fix and release the present receiving steel bar 2 The presently receiving rod 2 can be moved downward.

Therefore, the working time required for the lowering work such as the bottom supporting frame using the present accepting steel bar 2 can be greatly shortened in the backhoe method or the like by minimizing the manpower work.

Further, since the pressing and fixing unit 4 selectively fixes the outside of the current receiving steel bar 2, the current receiving steel bar 2 to which the coupler is coupled to the outside can also be lowered by using it without limitation.

3 to 7, the descending process of the string 2 is described below.

First, as shown in Fig. 3, the press fixing portion 4 fixes the outside of the current accepting steel rod 2 in a state in which the wedge 63 fixes the outside of the current accepting steel bar 2. [

Then, as shown in FIG. 4, the wedge 63 is lifted along the outer peripheral surface of the current receiving rod 2 after the wedge 63 is unfastened.

At this time, in order to facilitate the release of the wedge 63, the ram 52 is slightly lowered in a state where the pressure fixing portion 4 is fixed, and the wedge cone 61 is lowered slightly, Can be released.

When a thread T 1 is formed on the outer circumferential surface of the string 2 and a female thread T 3 is formed on the inner circumferential surface of the wedge 63, the female thread T 3 of the wedge 63 is inserted into the string The wedge 63 may be moved upwardly while moving along the thread T 1 of the first wing 63. [

5, when the ram 52 is lifted to complete the elevation of the ram 52, the wedge 63 fixes the outside of the current accepting steel rod 2, (2) Release the external fixation rod.

5, when the ram 52 is lifted, the wedge 63 separated in the process of FIG. 4 is moved to the upper portion of the string 2, and then the ram 52 is lifted.

 6, when the pressing and fixing unit 4 is constituted by a pair of pressure plates 41a and 41b and a gap adjusting unit 42, the interval adjusting unit 42 is driven to set the interval between the pressure plates 41a and 41b Thereby releasing the fixing of the pressure fixing portion 4. [

Finally, as shown in FIG. 7, the ram 52 is lowered to lower the suspension rod 2.

At this time, the current receiving steel bar 2 can be lowered by the stroke of the ram 52.

It is possible to maximize the descending height of the current receiving steel bar 2 once when the descending height of the current receiving steel bar 2 is lowered as close as possible to the maximum value of the stroke of the ram 52.

3 to 7 may be repeated to lower the current receiving rod 2 by a predetermined height.

8 is a perspective view showing the details of the pressure fixing portion.

8, the pressurizing and fixing unit 4 includes a pair of pressure plates 41a and 41b provided on both sides of the string 2 and a pair of pressure plates 41a and 41b. 41b so that the pair of pressure plates 41a, 41b can selectively fix the string receiving rod 2 by adjusting the interval between the pressure plates 41a, 41b.

The pressure plates 41a and 41b are disposed on both sides of the current receiving rod 2. The pressure plates 41a and 41b can have various plan shapes such as a circular shape and a square shape.

The pressure plates 41a and 41b are symmetrical as much as possible so as to be uniformly movable to both sides of the through hole 31. [

The gap adjusting unit 42 secures a space through which the coupler coupled to the string receiving rod 2 or the string receiving rod 2 can pass through by spacing the gap between the respective pressure plates 41a and 41b symmetrically.

In the embodiment of FIG. 8, the gap adjusting portion 42 may be driven by a hydraulic jack connected to the hydraulic line 43 and capable of maintaining a firm fixing force by the hydraulic pressure. In addition, various embodiments such as a rack gear and a pinion gear are possible.

In the case where the pressing and fixing unit 4 is constituted by the pair of pressure plates 41a and 41b and the gap adjusting unit 42 as described above, the bottom of the string 2 can be quickly and accurately Can be fixed.

In addition, a semicircular fixing groove 411 corresponding to the outer circumferential surface of the current receiving steel bar 2 may be formed at the center of the pressure receiving plates 41a and 41b on the side of the current receiving steel bar 2.

The semicircular fixing grooves 411 are in close contact with both sides of the string 2, and fix the string 2.

A thread T 1 may be formed on the outer peripheral surface of the string 2 and a female thread T 2 may be formed on the inner side of the fixing groove 411 to engage with the thread T 1 .

The thread T 1 of the string 2 is interlocked with the female thread T 2 of the fixing groove 411 so that the slip between the fixing groove 411 and the string 2 Can be prevented.

10 is a perspective view showing a pressure plate whose gap is adjusted by a stopper. Figs. 10 (a) to 10 (c) are cross- to be.

9 and 10, stoppers 32a and 32b may be coupled to the upper surface of the base plate 3 to the outside of the respective pressure plates 41a and 41b.

The pressing plates 41a and 41b are spaced apart from the lower base plate 3 and the pressing plates 41a and 41b by adjusting the interval between the pressing plates 41a and 41b by an internal reaction force generated by the interval adjusting unit 42. [ It moves separately. Therefore, there is no guarantee that the pressure plates 41a and 41b will spread exactly in the left-right symmetry when the gap between the pressure plates 41a and 41b is increased.

Particularly, when the pressure plates 41a and 41b are biased to one side, one side of the pressure plates 41a and 41b may occlude the through-hole 31 of the base plate 3, The coupler coupled to the steel rod 2 is caught by the pressure plates 41a and 41b and the suspension rod 2 can not descend.

Therefore, as shown in FIG. 10 (a), stoppers 32a and 32b can be provided at positions spaced apart from the pressure plates 41a and 41b by a predetermined distance from the outer sides of the pressure plates 41a and 41b.

The stoppers 32a and 32b may be formed in a substantially L-shape so that the stoppers 32a and 32b contact one corner of the pressure plates 41a and 41b if the pressure plates 41a and 41b are rectangular.

When the distance between the pressure plates 41a and 41b is increased according to the driving of the gap adjusting unit 42, either one of the pressure plates 41a is not moved by the first stopper 32a and moves further )).

Since the other side pressure plate 41b continues to move and reaches the other side stopper 32b, the one side pressure plate 41a and the other side pressure plate 41b are correctly symmetrically opened (FIG. 10 (c)).

Therefore, the through-hole 31 of the base plate 3 is completely opened to easily lower the suspension rod 2 and the coupler.

On the contrary, when the distance between the pressure plates 41a and 41b is short, there is no problem since the present receiving rod 2 is centered.

FIG. 11 is a perspective view showing a part of the lowering device of the present invention provided with a pedestal, and FIGS. 12 (a) to 12 (b) And Fig. 13 is a vertical sectional view showing an embodiment of the pedestal.

2, 11, and the like, a plurality of leg portions 71 are provided between the base plate 3 and the raising / lowering jack 5, and a pedestal 7 for supporting the raising / lowering jack 5 is provided .

When the wedge 63 fixes the outside of the current receiving rod 2 and the pressing and fixing unit 4 releases the external fixation of the current receiving rod 2, When the receiving rod 2 descends, the upper portion of the string 2 is fixed to the upper portion of the ram 52 by the wedge 63. However, the lower portion of the string 2 is not fixed separately, 3 through the through hole 31 and descends downward.

At this time, the lower portion of the string 2 may deviate from the center of the through hole 31, and the side of the string 2 or the coupler may be caught by the through hole 31, even if the lower heavy object is small.

Accordingly, the worker has a pedestal 7 supporting the elevating / lowering jack 5 so that the lower space is opened so that the center of the present receiving steel bar 2 can be aligned while adjusting the position of the present receiving steel bar 2.

That is, the pedestal 7 is provided with a plurality of legs 71 so as to open a space below the elevating jack 5, The position can be adjusted.

11 to 13, the legs 71 of the pedestal 7 are inserted into the press plates 41a and 41b so that the elongated holes 412 are formed in the moving direction of the press plates 41a and 41b, May be formed.

The slots 412 of the pressure plates 41a and 41b are moved while being guided along the legs 71 as shown in Figures 12A and 12B, 41a, 41b can stably reciprocate linearly within a certain range.

Therefore, even if the one side pressure plate 41a is opened first when the pressure plates 41a and 41b are opened, the long hole 412 of the one side pressure plate 41a is caught by the leg portion 71 and the one side pressure plate 41a does not move further . And only the other pressure plate 41b moves so that the left and right pressure plates 41a and 41b are symmetrically arranged.

11, four legs 71 are formed and two elongated holes 412 are formed in each of the pressure plates 41a and 41b so as to allow two legs 71 to pass therethrough.

The long hole 412 can perform the same function as the stoppers 32a and 32b described above and can be used in combination with the stoppers 32a and 32b shown in FIGS.

The pedestal 7 may be composed of a leg 71 and an upper support plate 72 as shown in FIG. 12 and may be constituted by a leg 71, an upper support plate 72 and a lower support plate 73 as shown in FIG. .

When the lower support plate 73 is provided, the pressure plates 41a and 41b may be positioned above the lower support plate 73.

14 is a side view of the descent apparatus of the present invention having a control unit.

14, the gap adjusting unit 42 is connected to the up / down jack 5 so that the gap adjusting unit 42 is driven immediately before the lowering of the ram 52 to raise the pressure plates 41a and 41b, And a control unit 8 that controls the interval adjusting unit 42 to move the pressing plates 41a and 41b together after the lowering of the ram 52 is completed.

The control unit 8 can be configured to automatically control the operation of the gap adjusting unit 42 and the up / down jack 5 so as to operate in cooperation with each other.

When the control unit 8 controls the driving of the gap adjusting unit 42 and the up / down jack 5 in an interlocking manner, the lowering apparatus of the present invention can be operated more easily and more safely.

15 is a perspective view showing an embodiment of a wedge cone.

As shown in FIG. 15, a plurality of rows of grooves G may be formed in the circumferential direction on the outer circumferential surface of the wedge 63 and the inner circumferential surface of the wedge hole 62.

The wedge 63 may be tightly caught between the wedge hole 62 and the suspension rod 2 when the wedge 63 is unfastened.

A plurality of grooves G may be formed on the outer circumferential surface of the wedge 63 and the inner circumferential surface of the wedge hole 62 so that the wedge 63 can be easily separated.

16 is a perspective view showing an embodiment of a wedge;

As shown in FIG. 16, the wedge 63 is divided into a plurality of units in a plane, and the magnet 64 can be configured to be attached to a portion where the unit on the wedge 63 meets.

The wedge 63 can be constructed by combining several equally divided units.

In the embodiment of FIG. 16, the wedge 63 is constructed by combining three units manufactured in the same shape.

As shown in FIG. 4, when the wedge 63 is moved upward along the outer circumferential surface of the current receiving rod 2 to separate the wedge 63 from the wedge hole 62, a plurality of units can be separated from each other.

Therefore, when the magnets 64 are attached to the upper portion of the neighboring unit, the neighboring units are attached to the outer circumferential surface of the rod 2 without falling off by the magnetic force of the magnets 64, Management is convenient.

That is, the outer peripheral surface, the screw thread (T 1) is formed, and the thread for the inner peripheral surface, the slip (slip) prevents the wedge 63 female thread to correspond with (T 1) (T 3) of said current receiving bar (2) . Accordingly, the wedge 63 can be moved upward by rotating the wedge 63 in a state where the wedge 63 is coupled to the current receiving rod 2 by the magnet 64.

1: floor 11: moving ball
2: string for receiving rod 21: connecting member
3: base plate 31: through hole
32a, 32b: stopper 4:
41a, 41b: pressure plate 411: fixing groove
412: Long hole 42:
43: Hydraulic line 5: Up / down jack
51: cylinder 52: ram
53: hydraulic line 6: upper fixing portion
61: Wedge cone 62: Wedge hole
63: Wedge 64: Magnet
7: pedestal 71: leg
72: upper support plate 73: lower support plate
8: Control part G:
T 1 : thread T 2 , T 3 : female thread

Claims (10)

(2) having a thread (T 1 ) formed on the outer circumferential surface of which a heavy object is coupled to the lower end;
A base plate (3) having a through hole (31) formed at the center thereof so as to allow the above - mentioned string receiving rod (2) to pass therethrough;
And the threaded portion T 1 of the string 2 is provided at the center of the string 2 at the center of the string 2 by tightly pressing and fixing the outside of the string 2. A pair of pressing plates 41a and 41b provided on both sides of the string 2 for receiving and forming a semicircular fixing groove 411 having a female thread T 2 meshing with the pair of pressing plates 41, A gap adjusting portion 42 which is coupled between the pair of pressing plates 41a and 41b to adjust the distance between the pressing plates 41a and 41b so that the pair of pressing plates 41a and 41b selectively press- A pressurizing and fixing unit 4;
And a lifting jack 51 which is provided on the upper portion of the pressure fixing portion 4 and is composed of a lower cylinder 51 and a ram 52 which ascends and descends to the upper portion of the cylinder 51, (5);
A wedge cone 61 provided on an upper surface of the ram 52 of the lifting jack 5 and having a wedge hole 62 formed on an inner circumferential surface thereof, An upper fixing part 6 composed of a wedge 63 that is segmented into a plurality of planar units for fixing and a magnet 64 that is provided at a portion where each unit on the wedge 63 meets and which is connected to a neighboring unit, ; And
And a plurality of leg portions 71 provided under the upper support plate 72 and the upper support plate 72 and positioned between the base plate 3 and the up / down jack 5, A pedestal 7 for supporting the lower part of the pedestal 7; Respectively,
The legs 71 of the pedestal 7 are connected to the pressure plates 41a and 41b so that the elongated holes 412 are formed in the moving direction of the pressure plates 41a and 41b, Guide the linear reciprocating motion,
After the lowering of the ram 52 is completed with the wedge 63 fixing the outside of the current receiving rod 2, the pressing and fixing unit 4 fixes the outside of the current receiving rod 2, And the wedge (63) fixes the outside of the current receiving steel bar (2), and the pressing and fixing part (4) is released from the fixation after the elevation of the ram (52) Device.
delete delete delete The method of claim 1,
And stoppers (32a, 32b) are coupled to the outer surfaces of the respective pressure plates (41a, 41b) on the upper surface of the base plate (3).
delete delete The method of claim 1,
The interval adjusting unit 42 and the elevating and lowering jack 5 are operated to drive the gap adjusting unit 42 to open the pressure plates 41a and 41b immediately before the lowering of the ram 52, Further comprising a control unit (8) for controlling the interspace adjusting unit (42) to control the interlocking of the pressure plates (41a, 41b).
The method of claim 1,
Wherein a plurality of rows of grooves (G) are formed in the circumferential direction on the outer circumferential surface of the wedge (63) and the inner circumferential surface of the wedge hole (62).
delete
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KR101794588B1 (en) * 2016-12-30 2017-11-07 이상진 Top-down-typed Mold Descending System and Method thereof

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KR100914546B1 (en) * 2009-04-23 2009-09-01 주식회사 예경산업개발 Multi-axis punching drill device and construction method using the same
KR101197713B1 (en) * 2012-04-05 2012-11-05 주식회사 삼호에스텍 Lifting device
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KR101769617B1 (en) * 2016-11-02 2017-08-30 (주)삼호언더폼이엔지 Top-down-typed Mold Descending Apparatus and Method thereof
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