KR101067365B1 - Lifting Device using a number of pulleys - Google Patents

Abstract

An elevator apparatus using a pulley is disclosed. Lifting apparatus according to the present invention is coupled to the lifting object, a plurality of first pulley unit each comprising one or more pulleys; A plurality of second pulley units coupled to the base, each including one or more pulleys, the plurality of first pulley units corresponding to each of the plurality of first pulley units; A cable guided to and supported by both the pulley of each first pulley unit and the pulley of each second pulley unit, the cable being tensioned by the load of the lifting object; And a drum rotatably coupled to the base, the cable being wound, the drum being adjustable in linkage with the rotation to loosen the cable, and the elevating object being a well or base part forming a bottom of the well or the well. The lifting object is lifted with respect to the base as the cable is wound or unwound on the drum, and the base is composed of a floater floating on the surface of the water. According to the present invention, the elevating object can be raised and lowered by adjusting the length of tension of the cable to which the cable is released. Therefore, even in a narrow place where the use of a large lifting device is impossible, the weight of the heavy well can be distributed and the well can be lifted with a small force. In addition, the lifting object can be vertically lifted more precisely.

Lifting, ready-made piles, wells, foundations, pulleys, hydraulic

Description

Lifting device using a number of pulleys}

The present invention relates to a lifting device using a pulley, and more particularly, to a lifting device configured to raise or lower a large load lifting object with a small force by allowing several pulleys to work together.

Lifting devices, such as water cranes, are used in the construction of foundations by wells in areas where rivers, sea or water are standing. This lifting device is expensive and has a disadvantage that the larger the size of the well is, the larger the size of the well is.

Particularly, in the well construction method, a well is generally used, which is larger than the depth, and the deeper the depth, the larger the well should be used, and the weight of the well becomes heavier. Therefore, the deeper the water depth, the larger the lifting device is needed.

However, in places where it is difficult to insert a large lifting device such as a river or a river, the construction of a well bucket base using a large lifting device takes a lot of cost.

In addition, when a large lifting device is used, a large lifting device is expensive. Therefore, a large lifting device cannot be waited until the construction of the well base is completed. Will be withdrawn. Therefore, there is a limit in that it is difficult to support the safety ground by sinking the well in the vertical direction when the large lifting device is not used when the well is subsequently settled.

The present invention has been made to solve the above problems, an object of the present invention is to raise and lower the lifting object by adjusting the length of the cable is applied to the pulley is applied to less tension from the drum is configured so that several pulleys act at the same time Since it can be used in a narrow place where the use of a large lifting device can not be easily used, and also to provide a lifting device using a pulley that can lift the lifting object more vertically.

In order to achieve the above object, the lifting device using the pulley according to the present invention is coupled to the lifting object, a plurality of first pulley unit each including one or more pulleys; A plurality of second pulley units coupled to the base, each comprising at least one pulley, each corresponding to a plurality of first pulley units; A cable guided to and supported by both the pulleys of each of the first pulley units and the pulleys of each of the second pulley units, the cable being tensioned by the load of the elevating object; And a drum rotatably coupled to the base, the cable being wound, the drum being adjustable in linkage with the rotation to unwind the cable, wherein the elevating object forms a well or a lower end of the well. The base of the well, wherein the lifting object is lifted with respect to the base as the cable is wound or unwinded on the drum, the base is characterized in that the floater floating on the water surface.

Here, the plurality of first pulley units are disposed radially around the lifting object, and the plurality of second pulley units are preferably disposed radially around the lifting object.

Each of the plurality of first pulley units is paired with each of the plurality of second pulley units to form a plurality of pulley unit pairs, and the cable includes a plurality of pulley units along an arrangement direction of the plurality of pulley unit pairs. It is preferred to be guided sequentially to the pair, respectively.

In addition, according to the present invention, each of the first pulley unit, the first housing coupled to the lifting object; And a plurality of first pulleys rotatably coupled to the first housing, the grooves of which the cable is guided are formed on the outer circumferential surface thereof, and arranged in parallel with each other, wherein each of the second pulley units is connected to the base. A second housing coupled; A pair of second pulleys rotatably coupled to the second housing, having a center of rotation orthogonal to the center of rotation of the first pulley, the grooves to which the cable is guided are formed on the outer circumferential surface, and parallel to each other; And a plurality of third pulleys rotatably coupled to the second housing and having a rotation center axis orthogonal to the rotation center axis of the second pulley, wherein the grooves to which the cable is guided are formed on the outer circumferential surface and arranged in parallel with each other. It is preferable to have;

Each of the second pulley units may be disposed between the second pulley and the third pulley, have a rotation center axis parallel to the rotation center axis of the third pulley, and a groove in which the cable is guided is formed on an outer circumferential surface thereof. It is preferable to further comprise a pair of fourth pulley arranged in parallel with each other.

In addition, according to the present invention, the first pulley unit is preferably detachably coupled to the lifting object.

Here, the lifting object is formed with the same number of lugs as the first pulley unit, each of the first pulley unit and the pin member is inserted into each lug; And driving means for driving the pin members so that the pin members are separated from any one of the first pulley unit and the lug.

And, the drive means, a hydraulic actuator having a piston to which each pin member is coupled; A hydraulic pump for applying hydraulic pressure to drive the respective pistons; And a hydraulic line connecting each of the hydraulic actuators and the hydraulic pump.

According to the present invention, it is possible to raise and lower the lifting object by adjusting the length of the tension applied cable is released from the drum, there is an advantage that can be easily used even in a narrow place where the use of a large lifting device is impossible.

And, by adjusting the tension applied to the cable it is possible to precisely lower the lifting object vertically. In particular, when the water is properly filled in the plotter balance tank, the plotter can be kept horizontal, so that the vertical drop of the well can be made easier.

1 is a schematic cross-sectional view for explaining a process of elevating a well using a lifting device using a pulley according to an embodiment of the present invention, Figure 2 is a schematic plan view of the lifting device in Figure 1, Figure 3 A schematic side view of the elevating device shown in FIG. 1, FIG. 4 is an enlarged schematic enlarged view of a portion of the elevating device shown in FIG. 1, and FIG. 5 shows a second pulley unit of the elevating device shown in FIG. It is a schematic block diagram for demonstrating the process.

1 to 5, the elevating apparatus using the pulley of the present embodiment is for elevating the elevating object with respect to the base. The lifting object is composed of a well barrel including a well base part or a well base part forming a bottom part of a well and a concrete support body formed in an upper end of the well base part in a vertical direction, and in this embodiment, set as a well base part. do. Concrete is poured into the well base 10, and the well base 10 is formed in an annular shape. In addition, a plurality of lugs 11 are formed on the outer circumferential surface of the well base 10 in a radial shape. Each lug 11 is formed with a through hole 111. And, as a base, the plotter 20 floating in the river was taken as an example. In addition, the floater 20 is formed with an opening 211 open in the vertical direction, the well base 10 is inserted into the opening 211. The plotter 20 is composed of a plurality of floating body 21 is coupled. In addition, a pair of balance tanks 212 and 213 are formed in each floating body 21.

The elevating device includes a plurality of first pulley units 30, a plurality of second pulley units 40, a cable 50, a drum 60, and driving means.

The plurality of first pulley units 30 are coupled to form a radial shape in the well base 10. That is, the plurality of first pulley units 30 are arranged to maintain the same distance from each other on the outer circumferential surface of the well base 10. The number of first pulley units 30 is equal to the number of lugs 11 formed on the well basal base. Each first pulley unit 30 includes a first housing 31 and a plurality of first pulleys 32.

The first housing 31 is detachably coupled to the well base 10. The first housing 31 is provided with a pair of through holes 311 coaxially connected with the through holes 111 of the lug. The pin member 33 is inserted into each of the through holes 311 and the through holes 111 of the lug of the first housing. When the pin member 33 is separated from the through hole 111 of the lug, the first housing 31 is separated from the well base 10.

The plurality of first pulleys 32 are rotatably coupled to the first housing 31. The plurality of first pulleys 32 are disposed in parallel to each other, are arranged coaxially with each other to rotate about the same rotation center axis. The plurality of first pulleys 32 are formed with the same size as each other. A groove is formed in the outer circumferential surface of each first pulley 32.

The plurality of second pulley units 40 are coupled to the plotter 20. That is, the plurality of second pulley units 40 are arranged to be spaced apart at equal intervals from the well base 10. The number of second pulley units 40 is equal to the number of first pulley units 30. Each second pulley unit 40 includes a second housing 41, a pair of second pulleys 42, a plurality of third pulleys 43, and a pair of fourth pulleys 44. .

The second housing 41 is bolted to the plotter 20.

The pair of second pulleys 42 is rotatably coupled to the second housing 41. The pair of second pulleys 42 are disposed in parallel to each other, are arranged coaxially with each other to rotate about the same rotation center axis. The center of rotation axis of each second pulley 42 is orthogonal to the axis of rotation of the first pulley 41. The pair of second pulleys 42 are formed to have the same size, and grooves are formed on the outer circumferential surface of each second pulley 42.

The plurality of third pulleys 43 is rotatably coupled to the second housing 41. The plurality of third pulleys 43 are disposed in parallel to each other, are arranged coaxially with each other to rotate about the same rotation center axis. The rotation center axis of each third pulley 43 is orthogonal to the rotation center axis of the second pulley 42. The plurality of third pulleys 43 are formed to have the same size, and grooves are formed on the outer circumferential surface of each third pulley 43.

The pair of fourth pulleys 44 is rotatably coupled to the second housing 41. The pair of fourth pulleys 44 is disposed between the second pulley 42 and the third pulley 43. The pair of fourth pulleys 44 are arranged in parallel with each other, are arranged coaxially with each other to rotate about the same rotation center axis. The center of rotation axis of each fourth pulley 44 is parallel to the center of rotation of the third pulley 43. In addition, the pair of fourth pulleys 44 may have the same size, and grooves may be formed on the outer circumferential surface of each of the fourth pulleys 44.

Each of the plurality of first pulley units 30 is paired with each of the plurality of second pulley units 40 to form a plurality of pulley unit pairs. That is, the number of pulley unit pairs is the same as that of the first pulley unit 30, and the pulley unit pair includes a first pulley unit 30 and a second pulley unit 40 facing each other as a whole. The plurality of pulley unit pairs are radially disposed about the well base.

The cable 50 is flexible, such as a rope, a wire or a belt, and may be wound or unwound on the drum 51, and may be applied to the cable 51 regardless of its material or shape. The cable 50 is guided and supported by both the plurality of first pulley units 30 and the plurality of second pulley units 40. Specifically, the cable 50 is wound around at least a portion of each of the groove of the second pulley 42, the groove of the fourth pulley 44, the groove of the third pulley 43 and the groove of the first pulley 32. have. In particular, the cable 50 is sequentially guided to each of the plurality of pulley unit pairs along the arrangement direction of the plurality of pulley unit pairs. When the cable 50 is guided along the longitudinal direction of the cable 50, the cable 50 is guided to the groove of the second pulley 42 and the groove of the fourth pulley 44. After contacting and supporting each of the grooves of the plurality of third pulleys 43 and the grooves of the plurality of first pulleys 32 in contact with each other, the grooves of the fourth pulley 44 and the grooves of the second pulley 42 again. Is supported in contact with. In particular, the cable 50 is supported below one groove of one second pulley 42 and one groove of one fourth pulley 44 and includes a plurality of third pulleys 43 and a plurality of first pulleys 32. After being supported by the other second pulley 42 groove portion and one fourth pulley 44 is supported by the lower portion of the groove portion as shown in FIG. When the cable is wound or unwound, the third pulley 43 and the fourth pulley 44 rotate in opposite directions.

The drum 51 is installed in the plotter 20 and is commonly referred to as a winch device, and is provided with a power device such as a motor and is rotatable. The drum 51 is formed in a cylindrical shape. The cable is wound around the drum 51, and the cable wound around the drum is further wound or unrolled according to the rotational direction of the drum 51, thereby adjusting the length of the cable 50 released from the drum 51. The drum 51 is provided with a pair, and both ends of the cable 50 are connected to the drum 51, respectively. Thus, by controlling the operation of the pair of drums 51, the length of the cable 50 between the pair of drums 51 can be adjusted.

When the cable 50 is supported by the pulley and described in more detail while following the cable, the cable 50 from the drum 51 is separated from the floating body 21 in the second pulley 42 of the second pulley unit. The pulley 32 at the edge of the first pulley 32 via the pulley 43 at the edge of the third pulley 43 via the fourth pulley 44 and then to the close pulley 42. Leads to. Subsequently, the cable 50 via the first pulley 32 is connected to the next pulley of the third pulley 43 and returns to the first pulley 32 again. After the first pulley 32 and the third pulley 43 are alternately reciprocated and passed through, the cable 50 arriving at the third pulley 43 is connected to the second pulley 44 via the fourth pulley 44. 42 is connected to the pulley 42 disposed above, and then to the upper pulley of another neighboring second pulley unit.

In this manner, the cable 50 passes through both the first pulley unit 30 and the second pulley unit 40, and both ends of the cable are connected to the drum 51, respectively. Therefore, the load of the well base part 10 is supported by the cable 50, and the load of the well base part is equally divided and supported by the 1st pulley unit, respectively.

The driving means is to release the connection between the well base 10 and the cable 50 after the purpose of the support is achieved while the well base 10 is connected to the cable 50. At this time, the position of the first pulley unit 30 is buried under water or in the soil. Therefore, it is necessary to function to separate the first pulley unit 30 from the well 10 at a long distance, and the driving means performs this function. The driving means includes a hydraulic actuator 61, a hydraulic pump 62, and a hydraulic line 63.

A plurality of hydraulic actuators 61 are provided in the same number as the first pulley unit 30, and are coupled to the first housing 31, respectively. Each hydraulic actuator 61 includes a cylinder 611 and a piston 612 coupled to the cylinder so as to reciprocate linearly. Reciprocating movement of the piston 612 is possible by the hydraulic pressure applied to the cylinder 611, since the configuration of such a hydraulic actuator 61 is already well known, a detailed description thereof will be omitted. The pin member 33 is coupled to the piston 612 via the bracket 613.

The hydraulic pump 62 is installed in the plotter 10. The hydraulic pump 62 is for reciprocating linear driving of the piston 612 by applying hydraulic pressure to the hydraulic actuator 61. When the hydraulic member 62 is operated to release the pin member 33 from the through hole 111 of the lug, the first housing 31 and the lug 11 are separated from each other. The hydraulic pump 62 may be provided in plural to correspond to the number of the hydraulic actuators 61, and only one may be provided to simultaneously drive a plurality of hydraulic actuators. In the state shown by the solid line in FIG. 5, when the hydraulic pump 62 is operated to move the piston 612 to the left, the pin member 33 penetrates the lug as shown by the virtual line in FIG. 5. Since the ball 111 is separated from the first pulley unit 30 is separated from the well base 10.

The hydraulic line 63 connects each hydraulic actuator 61 and the hydraulic pump 62 to transfer the hydraulic pressure applied from the hydraulic pump 62 to the hydraulic actuator 61.

When the lifting device configured as described above is used, the well base 10 is supported by the cable 50, and tension is applied to the cable 50 by the load of the well base 10. In particular, further loosening the cable 50 from the drum 51 may lower the well base, and conversely, further winding the cable 50 to the drum 51 may raise the well base. As a result, after moving the plotter 20 to the desired installation position, simply adjusting the length of the cable 50 can lower the well base 10 to the desired position. Therefore, even when the river or river is narrow, it is difficult to insert the lifting device, it is possible to construct the well basin foundation using the lifting device of the present embodiment. In addition, since the expensive lifting device is not necessary, the construction of the well basin can be made very economically.

In addition, in the process of adjusting the length of the cable to sink the base of the well, by properly filling water in the balance tanks 212 and 213 of each floating body, the upper surface of each floating body can be kept parallel to the water surface. The volume of water filled in the balance tanks 212 and 213 of each floating body may be different. In addition, the process of maintaining the horizontality of the plotter 20 by filling water in the balance tanks 212 and 213 may be performed simultaneously with the process of lowering the well base 10, and in some cases, the well base ( After lowering 10), the well basin foundation 10 may be measured before the lowering of the well and before the lowering of the well basal foundation. As such, when the upper surface of each floating body 21 is kept parallel to the water surface, since the well basin 10 is settled straight vertically, the well basin foundation construction can be made more precisely.

On the other hand, in this embodiment is configured to elevate the well base 10 by one cable 50, the drum 51 is provided as the number of the floating body 21 and the cable 50 of the drum It can be configured to be provided with a number. The cable 50 released from the drum 51 is connected to the four second pulley units 40 installed on one floating body 21 and the four first pulley units 30 installed on the well base 10. do. Then, one end of the cable 50 is connected to the drum 51 and the other end of the cable 50 is connected to a tension gauge (not shown). Here, the tension gauge is a device for applying the tension uniformly to the cable, its configuration is already well known, so a detailed description thereof will be omitted here.

The process in which the cable 50 is supported by the four first pulley units 30 and the four second pulley units 40 is the same as described above, except that the other end of the cable 50 is connected to the tension gauge. Then, the other end of the cable 50 is connected to the tension gauge so that the cable does not come off and can check the tension. In this way, the cable 50 withdrawn from the drum 51 is fixed to the tension gauge at the end after passing through the plurality of pulleys 32, 42, 43, 44, so that the cable spans the drum 51 and the tension gauge. The tension of 50 becomes constant. Therefore, excessive tension is applied to the cable to prevent the cable from breaking.

In addition, since the cable is provided with a plurality of different from the previous embodiment only need to connect the cable to the four first pulley unit 30 and the four second pulley unit 40, the connection work of the cable can be made more easily.

As mentioned above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the technical idea of the present invention. It is obvious.

1 is a schematic cross-sectional view for explaining a process of elevating a well bucket using a lifting device using a pulley according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the elevator apparatus in FIG. 1. FIG.

3 is a schematic side view of the elevator apparatus shown in FIG. 1.

FIG. 4 is an enlarged view schematically showing a portion of the elevating device shown in FIG. 1.

FIG. 5 is a schematic diagram illustrating a process of releasing the second pulley unit of the lifting apparatus shown in FIG. 1 from a well bucket.

<Description of the symbols for the main parts of the drawings>

10 ... well base 11 ... lugs

20.Plotter 30 ... 1 pulley unit

31 1st housing 32 ... 1st pulley

33.Pin member 40 ... 2nd pulley unit

41 ... 2nd housing 42 ... 2nd pulley

43 ... 3rd pulley 44 ... 4th pulley

50 ... cable 51 ... drum

61.Hydraulic actuator 62 ... Hydraulic pump

63.Hydraulic line 111,311 through-through

611 Cylinder ... 612

613 Bracket

Claims (8)

A plurality of first pulley units coupled to the elevating object, each of which comprises at least one pulley; A plurality of second pulley units coupled to the base, each including one or more pulleys, each of the plurality of first pulley units corresponding to the plurality of first pulley units; A cable guided to and supported by both the pulleys of each of the first pulley units and the pulleys of each of the second pulley units, the cable being tensioned by the load of the elevating object; And And a drum rotatably coupled to the base, the cable being wound, the drum being adjustable in linkage with the rotation to unwind the cable. The elevating object is a well basin or a well base portion that forms the lower end of the well, the elevating object is elevated relative to the base as the cable is wound or unwinded to the drum, The base is a lifting device using a pulley, characterized in that the floater floating on the water surface. The method of claim 1, The plurality of first pulley units are arranged radially around the lifting object, The plurality of second pulley units are lifting devices using a pulley, characterized in that arranged radially around the lifting object. The method of claim 1, Each of the plurality of first pulley units is paired with each of the plurality of second pulley units to form a plurality of pulley unit pairs, And the cable is sequentially guided to the plurality of pulley unit pairs along the arrangement direction of the plurality of pulley unit pairs. The method of claim 1, Each of the first pulley units, A first housing coupled to the elevating object; And And a plurality of first pulleys rotatably coupled to the first housing, the grooves of which the cable is guided are formed on the outer circumferential surface, and arranged in parallel with each other. Each of the second pulley units, A second housing coupled to the base; A pair of second pulleys rotatably coupled to the second housing, having a center of rotation orthogonal to the center of rotation of the first pulley, the grooves to which the cable is guided are formed on the outer circumferential surface, and parallel to each other; And A plurality of third pulleys rotatably coupled to the second housing, having a center of rotation orthogonal to the center of rotation of the second pulley, the grooves to which the cable is guided are formed on the outer circumferential surface, and arranged in parallel with each other; Elevation device using a pulley, characterized in that it comprises a. The method of claim 4, wherein Each of the second pulley units, A pair of first and second pulleys disposed between the second and third pulleys, each having a center of rotation parallel to the center of rotation of the third pulley, wherein a groove in which the cable is guided is formed on an outer circumferential surface thereof and arranged in parallel with each other; 4 pulleys; lifting apparatus using a pulley, characterized in that it further comprises. The method of claim 1, The first pulley unit is a lifting device using a pulley, characterized in that detachably coupled to the lifting object. The method of claim 6, The lifting object is formed with the same number of lugs as the first pulley unit, A pin member inserted into each of the first pulley units and each lug; And And driving means for driving the pin members so that each pin member is separated from any one of the first pulley unit and the lug. The method of claim 7, wherein The driving means includes: A hydraulic actuator having a piston to which each pin member is coupled; A hydraulic pump for applying hydraulic pressure to drive the respective pistons; And And a hydraulic line connecting the respective hydraulic actuators and the hydraulic pump.

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