JP6932458B2 - handlift - Google Patents

Description

An embodiment of the present invention relates to a pallet jack that conveys a panel installed in a plant.

The control panel, power panel, and other panels installed in the electrical room of the plant are installed on the channel base provided in advance. The channel base is provided to install the board horizontally on the concrete floor in the installation room.

By providing the channel base on the floor, a step is generated between the floor on which the board is transported and the channel base on which the board that has been transported is installed. Therefore, a chill roller or the like is arranged on the channel base in advance, and the board conveyed by the hand lift is rolled by the chill roller to place the board at a desired position on the channel base.

As described above, the installation work of the panel in the plant requires a large amount of man-hours because it is necessary to go through a plurality of stages.

Japanese Unexamined Patent Publication No. 6-16366

The embodiment provides a pallet jack that simplifies board installation work.

The pallet jack according to the embodiment is used to transport the board and install the board on the channel base. The hand lift includes a first support member that is sandwiched and supported from both sides of the board, a jack that raises and lowers the first support member, and a second suction mechanism that fixes the board, and the first support member is said to be said. It is extended in the direction of sandwiching the board and is provided so as to surround the board together with the first support member in a U shape, and the second suction mechanism supports the board from a direction different from the direction in which the board is sandwiched. It includes a second support member . The first support member is pressed against the panel saw including a first suction mechanism capable of fixing the plate, is supported an end by the second support member, the direction of the second supporting member is stretched Movable along .

In this embodiment, a hand lift that simplifies the installation work of the panel is realized.

It is a schematic perspective view of the hand lift which concerns on embodiment. It is a schematic perspective view which illustrates the use state of the hand lift of an embodiment. It is a schematic rear view of the hand lift of an embodiment. It is a schematic perspective view for demonstrating the operation of the hand lift of an embodiment. FIG. 5A is a schematic cross-sectional view of a part of the hand lift. FIG. 5B is a schematic side view of a part of the hand lift. It is a schematic perspective view for demonstrating the operation of the hand lift of an embodiment. It is a schematic perspective view which illustrates the use state of the hand lift which concerns on the modification of embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the ratio of the sizes between the parts, and the like are not necessarily the same as the actual ones. Further, even when the same parts are represented, the dimensions and ratios may be different from each other depending on the drawings.
In the specification of the present application and each of the drawings, the same elements as those described above with respect to the above-described drawings are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate.

FIG. 1 is a schematic perspective view of a hand lift according to an embodiment.
As shown in FIG. 1, the hand lift 1 of the embodiment includes a plurality of pedestals 2, 4, a plurality of columns 5, 6, and a plurality of frames 7, 8. The pedestals 2 and 4 are, for example, columnar or tubular members having a square cross section. The two pedestals 2 are separated from each other so as to be substantially parallel to each other in the extending direction. A pedestal 4 is provided at one end of each of the two pedestals 2 arranged apart from each other. The pedestal 4 is arranged so that the extending direction is substantially orthogonal to the extending direction of the pedestal 2, and the pedestal 4 is provided so as to be overlapped on the pedestal 2. As will be described in detail later, the two pedestals 2 are movable with respect to the pedestal 4 in the direction in which the pedestal 4 is extended.

In the following description, three-dimensional coordinates may be used. The three-dimensional coordinates include an X-axis parallel to the direction in which the pedestal 2 extends, a Y-axis orthogonal to the X-axis, and a Z-axis orthogonal to the X-axis and the Y-axis.

According to such three-dimensional coordinates, the three pedestals 2 and 4 are arranged in a "U" shape in the XY plane view. Wheels 3 are provided below the two pedestals 2. The wheels 3 are provided so as to travel in a direction along the direction in which the pedestal 2 is extended. The hand lift 1 can travel along the Y axis by means of wheels 3 provided at the bottom of the pedestal 2.

The pedestal 2 is provided with a support column 6 that is connected to the pedestal 2 at one end and extends in the Z-axis direction. In this example, two columns 6 are provided on one pedestal 2. The two columns 6 are provided on the pedestal 2 at a distance along the X axis. A frame (first support member) 7 is provided at the other end of the support column 6. The frame 7 is, for example, a columnar or tubular member having a square cross section. The two frames 7 are provided so as to be substantially parallel to the respective pedestals 2.

The pedestal 4 is also provided with a support column 5 that is connected to the pedestal 4 at one end and extends in the Z-axis direction. In this example, there is only one support column 5, and the support column 5 is provided substantially at the center of the pedestal 4 in the extending direction (X-axis direction). A frame (second support member) 8 is provided at the other end of the support column 5. The frame 8 is, for example, a columnar or tubular member having a square cross section. The frame 8 is provided so as to be substantially parallel to the pedestal 4.

The frame 8 is connected at one end of each of the two frames 7. The two frames 7 are connected to the two pedestals 2 by the columns 6. Further, the frame 8 is connected to the pedestal 4 by a support column 5. The frames 7 and 8 are connected to the pedestals 2 and 4 by the columns 6 and 5, and the frames 7 and 8 are arranged in a “co” shape like the pedestals 2 and 4 in the XY plan view. The frame 7 moves along with the pedestal 2 along with the frame 8 and the pedestal 4 (in the X-axis direction).

In order to move the pedestal 2 while connecting it to the pedestal 4, openings 5a are provided near both ends of the pedestal 4. Similarly, in order to move the frame 7 while connecting it to the frame 8, openings 8a are provided near both ends of the frame 8. The pedestal 2, the support columns 6 and the frame 7 which are superstructures thereof are movable in the X-axis direction within the range of the lengths of the openings 5a and 8a in the X-axis direction.

The opening 5a of the pedestal 4 is provided to connect the jack mechanism housed in the pedestal 2 to the jack 31 provided on the pedestal 4.

The opening 8a of the frame 8 is provided to connect the interval adjusting mechanism housed in the frame 8 to the frame 7.

The pedestals 2, 4, the columns 5, 6, and the frames 7, 8 are made of a material having sufficient strength. For example, they are made of steel. As will be described in detail later, the pedestals 2 and 4 have a storage space inside because the jack mechanism for the elevating operation is housed. Further, the columns 5 and the frames 7 and 8 have storage spaces for accommodating pipes for discharging and introducing air from the suction device for fixing the transported object. Therefore, the pedestals 2 and 4 and the frames 7 and 8 are, for example, pipes having a square cross section. As for the support column 6, in order to reduce the weight, it is preferable to use, for example, a tubular tube material having a square cross section as long as the strength can be secured.

A jack lever 30 extending in the positive direction of the Z axis is attached to each of the jacks 31, and a handle 32 is provided at the other end of the jack lever 30. In order to avoid interference with the frame 8, the jack lever 30 is once bent in the positive direction of the Y axis from the vicinity of the middle of the jack lever 30, and further bent and extended in the positive direction of the Z axis. The jack 31 is provided with a fulcrum inside, and the fulcrum can rotate the jack 31 back and forth (in the Y-axis direction).

The handle 32 has an appropriate shape that is easy for the operator to operate by pulling the jack lever 30 to jack up, and pushing or towing the hand lift 1 via the jack lever 30. In this example, it is a substantially square ring having a horizontal bar portion extending in the X-axis direction and arranged substantially in parallel and a vertical bar portion connecting the two horizontal bar portions at both ends. Release levers 33 are provided in the vicinity of the upper horizontal bar portion. The release lever 33 is provided so as to be substantially parallel to the horizontal bar portion.

The jack 31 is connected to a jack mechanism (not shown). The jack mechanism is connected to a wheel support portion 34 (FIG. 2) that supports the wheel 3, and when the operator grips and operates the handle 32, the pedestal 2 is moved upward (Z-axis positive) via the wheel support portion. Can be lifted in the direction). The operation of the handle 32 by the operator is, for example, to pull the handle 32 toward you (in the positive direction of the Y axis) and rotate it by a fulcrum in the jack 31.

The jack 31 lifted upward can be lowered by the operator operating the release lever 33. The operation of the release lever 33 by the operator is, for example, to grasp the release lever 33 together with the upper horizontal bar.

The jack 31 is preferably a hydraulic jack. In the hydraulic jack, since the pedestal can be raised and lowered by the flood control, the pedestals 2 and 4 and the superstructure thereof can be raised and lowered without requiring the supply of other driving energy.

Each of the frames 7 and 8 is provided with a plurality of suction pads (first suction mechanism, second suction mechanism) 10. The arrangement of the suction pads 10 can be arbitrary, but in this example, the plurality of suction pads 10 are arranged in a row along the stretching direction of the frames 7 and 8. The arrangement is not limited to one row, and may be arranged in two rows, or in the case of a two-row arrangement, a staggered arrangement may be used. The number of suction pads 10 to be arranged can be arbitrary, but an appropriate number can be arranged according to the strength of adsorption to the conveyed object.

The suction pads 10 are provided so that the suction surfaces of the suction pads 10 face the inside of the frames 7 and 8 arranged in a U shape in an XY plan view. The conveyed object is arranged on the side where the suction pad 10 is arranged. The suction pad 10 sucks and fixes the transported object by pressing it against a surface such as a board that conveys the suction surface and exhausting the air on the pressed surface.

The suction pad 10 can exhaust air by the air pedal 22. The air pedal 22 functions as an air pump together with the air valve 21. The operator can exhaust the air on the suction surface side of the suction pad 10 by stepping on the air pedal 22. The air valve 21 includes a valve that is opened when the air pedal 22 is depressed, and the air on the suction surface side is exhausted to the outside of the air valve 21 by opening the valve. By opening the valve on the intake side of the air valve 21 when the air pedal 22 is not depressed, air can be introduced into the suction surface side of the suction pad 10 to release the transported object sucked by the suction pad 10. can.

As described above, the exhaust and intake of the suction pad 10 can be performed by the air pump including the air valve 21 and the air pedal 22 without requiring energy such as electric power.

FIG. 2 is a schematic perspective view illustrating a usage state of the hand lift of the embodiment.
As shown in FIG. 2, the hand lift 1 sandwiches the board 100, which is a transported object, by adjusting the separation interval of the pedestal 2 and its superstructure (post 6, frame 7), and the board 100 is shaped like a U. The board 100 is supported and fixed to the hand lift 1 by the suction pads 10 arranged on the three surfaces of the above. Further, the board 100 supported and fixed by the jack mechanism is lifted, and the board 100 is conveyed by the wheels 3.

The board 100 is conveyed on a channel base 102 having a width Wc and a height Hc set according to its depth and width, and is installed at a predetermined position.

The operation of the hand lift 1 of the embodiment will be described.
FIG. 3 is a schematic rear view of the hand lift of the embodiment.
FIG. 4 is a schematic perspective view for explaining the operation of the hand lift of the embodiment.
As shown in FIG. 3, a handle 40 is provided on the back surface of the frame 8. The handles 40 are provided at positions corresponding to the ends of the two frames 7. The handle 40 is connected to an interval adjusting mechanism (not shown) that connects the frames 7 and 8 to each other. The interval adjusting mechanism is a mechanism for moving the frame 7 along the frame 8, that is, along the X-axis direction. The interval adjusting mechanism is, for example, a gearbox. In this example, turning the handle 40 clockwise causes the frame 7 to move in the negative direction of the X-axis, and turning the handle 40 counterclockwise causes the frame 7 to move in the positive direction of the X-axis. ..

For example, by turning the two handles 40 clockwise on one side and counterclockwise on the other side, the distance W between the two frames 7 and the pedestal 2 can be widened or narrowed as shown by the arrow in FIG. .. In this example, turning the handle 40 on the left side (positive side of the X axis) clockwise and the handle 40 on the right side (negative side of the X axis) counterclockwise narrows the distance between the two frames 7.

FIG. 5A is a schematic cross-sectional view of a part of the hand lift. FIG. 5B is a schematic side view of a part of the hand lift.
5 (a) is a schematic cross-sectional view taken along the line AA of FIG. 5 (b), and shows a simplified structure of the connection between the suction pad 10 and the frame 7. The same applies to the suction pad 10 provided on the frame 8, and the connection structure for the suction pad provided on the auxiliary frame of the modified example described later is the same.

As shown in FIGS. 5 (a) and 5 (b), a plurality of suction pads 10 are provided along the extending direction of the frame 7 in this example. The suction pad 10 includes a pad body 12 and a sliding frame 14. One end of the intake / exhaust tube 20 is connected to the pad body 12.

The pad body 12 has a concave shape having a depth shorter than the radius of the sphere including the outer peripheral surface of the pad body 12. The pad body 12 is made of an elastic material such as rubber. That is, the pad body 12 is a suction cup. One end of the intake / exhaust tube 20 is connected to, for example, the convex side top of the pad body 12 through the pad body 12. The intake / exhaust tube 20 is extended in the frames 7 and 8 and in the support column 5 and connected to the air valve 21 at the other end. The intake / exhaust tube 20 is made of a flexible material such as PVC (PolyVinyl Chloride).

The pad body 12 is pressed against the surface of the board 100 to be deformed into a flat surface, and the air remaining in the concave shape is discarded via the intake / exhaust tube 20, so that the pad body 12 is connected to the pressed surface. Strength is ensured.

The sliding frame (support frame) 14 is connected to the convex side of the pad body 12. On the side of the frames 7 and 8 where the suction pad 10 is provided, a concave surface 7a which is a part of a spherical surface having a radius slightly longer than the radius of the sphere including the outer peripheral surface of the pad body 12 is formed. There is. The outer circumference of the sliding frame 14 has a curved surface that smoothly follows the concave surface 7a. By sliding the sliding frame 14 along the concave surface 7a formed on the frame, the sliding frame 14 can be rotated on the concave surface 7a, and the orientation of the pad body 12 can be freely set. .. By sliding the pad body 12 along the spherical concave surface 7a, the pad body 12 can be sufficiently brought into close contact with the surface of the transported object, and the transported object can be stably fixed.

FIG. 6 is a schematic perspective view for explaining the operation of the hand lift of the embodiment.
The jack 31 is connected to a jack mechanism (not shown). The jack mechanism is connected to the wheel support portion 34.
As shown in FIG. 6, in the hand lift 1 of the embodiment, the operator grips the handle 32 and operates the jack lever 30 (while pulling in the positive direction of the Y axis, the operator rotates around the inner fulcrum of the jack 31). As a result, the jack mechanism is activated, the wheel support portion 34 supporting the wheel 3 at one end is jacked up, and the pedestal 2 connected to the other end of the wheel support portion 34 is lifted upward.

A pedestal 4 is further connected to the upper part of the pedestal 2, and frames 7 and 8 are connected to the pedestals 2 and 4 via columns 6 and 5. By jacking up the pedestal 2, the pedestal 4 and the columns 6, 5 and the frames 7, 8 which are superstructures can be lifted upward.

By jacking up, the height H from the lower end (installation surface) of the wheel 3 to the lower surface of the pedestal 2 can be made higher than the height Hc of the channel base 102 (FIG. 2).

The operator can release the jack-up state by grasping the release lever 33 together with the handle 32. By releasing the jack-up state, the pedestals 2 and 4, the pedestals 6 and 5 and the frames 7 and 8 which are superstructures thereof can be returned to their original heights.

A method of using the hand lift 1 of the embodiment will be described.
A channel base 102 is provided on the floor surface of the electric room or the like (FIG. 2). In the channel base 102, the length in the Y-axis direction is set to be longer than the length in the X-axis direction in order to install the plurality of boards 100 along the Y-axis direction. The orientation of the panel 100 can be arbitrary, but in this example, the operation panel or the like is arranged on a plane substantially parallel to the YZ plane. The operator of the panel 100 after installation can operate toward the operation panel.

In the hand lift 1 of the embodiment, the wheel 3 is moved so that the suction pad 10 provided on the frame 8 is brought into close contact with one surface of the board 100, and the hand lift 1 is manually moved. In this example, the hand lift 1 is moved in the negative direction of the Y axis so as to press the suction pad 10 of the frame 8 against the side surface of the board 100.

The distance between the two frames 7 is adjusted according to the dimensions of the board 100. In this example, the distance between the two frames 7 is adjusted according to the depth dimension of the board 100. The distance between the two frames 7 is set by operating the handle 40 of the distance adjusting mechanism.

When adjusting the distance between the two frames 7, the suction pads 10 are pressed against the front surface and the back surface of the board 100, respectively, and the suction pads 10 are adjusted until they are in close contact with the surface of the board 100.

Here, the width Wc of the channel base 102 is set to be substantially equal to the depth of the board. The interval W of the frames 7 is adjusted so as to be approximately equal to the sum of the depth dimension of the board 100 and the thickness of the suction pad 10 (to be exact, the thickness crushed by pressing). It means that the width Wc of the base 102 is adjusted to be almost equal. By setting the distance between the pedestals 2 to be wider than the distance between the frames 7 by, for example, several cm to several tens of cm, the work can be facilitated.

The air pedal 22 is depressed to remove air from the suction surface of the suction pad 10 pressed against the panel 100, and the side surface, the front surface and the back surface of the board 100 are fixed to the suction surface of the suction pad 10, respectively.

The jack 31 lifts the board 100 fixed to the frames 7 and 8 via the suction pad 10. The lifting height is set to be higher than the height Hc of the channel base 102.

The hand lift 1 enters the channel base 102 along the Y-axis direction with the board 100 lifted. At this time, since the width W of the frame 7 and the pedestal 2 is about the width Wc of the channel base 102, the hand lift 1 can straddle the channel base 102.

When the hand lift 1 is moved to the position where the board 100 is installed, the jack 31 is opened and the board 100 is lowered to the installation position.

By operating the air valve 21, air is introduced into the suction pad 10 to release the suction pad 10 from the surface of the board 100.

By operating the handle of the interval adjusting mechanism, the interval between the two frames 7 is widened, and the fixed state of the board 100 to the frames 7 and 8 via the suction pad 10 is released.

The hand lift 1 is moved along the positive direction of the Y axis, and the transfer work of the board 100 is completed.

As described above, in the hand lift 1 of the embodiment, the width W of the frame 7 and the pedestal 2 is adjusted to about the width Wc of the channel base 102, and the board 100 is jacked up in that state. Therefore, the hand lift 1 can convey the board 100 to a predetermined position across the channel base 102 even if there is a step between the channel base 102 and the installation floor surface.

(Modification example)
FIG. 7 is a schematic perspective view illustrating a usage state of the hand lift according to a modified example of the embodiment.
As shown in FIG. 7, the modified hand lift 1 further includes an auxiliary frame 50. The auxiliary frame (third support member) 50 is used to assist the fixing strength of the board 100 with respect to the hand lift 1 after arranging the conveyed object in the U-shaped frame of the frame and the pedestal. Although not shown, a plurality of suction pads similar to the suction pad 10 described above are provided on the inside of the auxiliary frame 50, that is, on the surface facing the board 100.

As described above, since the auxiliary frame 50 is used after the conveyed object is arranged in the U-shaped frame, it is independent of the intake / exhaust system of the hand lift 1. Therefore, the auxiliary frame 50 has an intake / exhaust system for its own suction pad. In this example, the auxiliary frame 50 has an intake / exhaust lever 52. The intake / exhaust lever 52 drives an air valve (not shown) housed in the auxiliary frame 50 to exhaust the air from the suction pad. The intake / exhaust lever 52 drives the air valve so as to exhaust the air of the suction pad by, for example, turning it clockwise. The intake / exhaust lever 52 drives the air valve so as to introduce air into the suction pad by, for example, turning it counterclockwise.

A method of using the auxiliary frame 50 in the modified example will be described.
The auxiliary frame 50 is placed on the two pedestals 2 after the board 100 is arranged in the U-shaped frame of the pedestals 2 and 4 and the frames 7 and 8.

The pedestals 2 and 4 and their superstructures are aligned with the board 100 by an interval adjusting mechanism, and the three surfaces of the board 100 are fixed to the suction pad 10.

The intake / exhaust lever 52 is operated to exhaust the air from the suction pad of the auxiliary frame 50, and the remaining surface of the board 100 is fixed to the suction pad.

In this way, by additionally using the auxiliary frame 50, the four surfaces around the board 100 can be fixed by the suction pads. Since the auxiliary frame 50 is supported by two frames 7 near both ends thereof and is fixed to the conveyed object by a suction pad, the conveyed object can be stably transferred to the frame 7 without using other fixing means. Can be fixed.

The effect of the hand lift 1 of the embodiment and its modified example will be described.
Since the hand lift 1 includes a pedestal 2 that can move according to the width and depth of the transported object, a support column 6 and a frame 7 that are superstructures thereof, the transported object can be sandwiched and supported from both sides.

Since the hand lift 1 is provided with a suction pad 10 that can exhaust air to the transported object side of the frame 7 and fix it to the conveyed object, the sandwiched conveyed object can be fixed to the frame 7 without requiring other power. can.

The hand lift 1 further includes a pedestal 4 provided so as to be substantially orthogonal to the pedestal 2 of 2, and a suction pad 10 is also provided on a frame 8 provided substantially parallel to the pedestal 4 via a support column 5. ing. Therefore, the hand lift 1 can support the transported object on three surfaces and fix it stably.

The frames 7 and 8 have a concave surface 7a having a length slightly longer than the radius of the sphere, and the suction pad 10 is connected to the pad body 12 and has a curved surface that smoothly follows the concave surface 7a. Has 14. Therefore, the pad body 12 can freely rotate with respect to the frames 7 and 8 via the sliding frame 14. Therefore, the suction pad 10 can be fixed according to the orientation of the suction surface of the transported object.

As described above, in the hand lift 1 of the embodiment, since the conveyed object is supported, fixed, and jacked up by being sandwiched between the two frames 7, the conveyed object is conveyed on the channel base regardless of the step of the channel base. Can be placed.

The weight of the board transported by the hand lift 1 may exceed 1 ton, and even such a heavy object needs to be safely and reliably transported. In the hand lift 1 of the embodiment, a plurality of suction pads 10 are arranged inside a frame arranged in a U shape in an XY plan view. In the hand lift 1, a large number of suction pads 10 are used to support and fix the three surfaces of the transported object, so that even a heavy board can be safely and reliably transported.

When a heavier transported object is transported, or when the suction force is insufficient due to the shape of the transported object or the like, the four surfaces of the transported object can be supported by adding the auxiliary frame 50, and the suction force can be obtained. Can be improved.

The auxiliary frame 50 can be used in addition to handling heavy objects. That is, not all surfaces of the board to be conveyed are flat, and the front and back surfaces of the board may be open. In such a case, when the front surface and the back surface of the board are sandwiched between the frames 7, the surface to be sucked cannot be secured. Therefore, by adding the auxiliary frame 50, the board can be safely and surely fixed by supporting the two side surfaces of the board on which the flat surface can be secured.

Needless to say, the configuration of the hand lift described above is not limited to the above, and can be appropriately changed or modified. For example, in the embodiment and the modified example, one support column 5 for supporting the frame 8 and jacks 31 and jack levers 30 and the like are provided on both sides thereof, but a set of jacks and jack levers and the like are placed in the center of the pedestal 4. It may be arranged in the vicinity, and the columns may be arranged on both sides of the jack, the jack lever, and the like. Further, the handle of the spacing adjusting mechanism may also be one handle so that the spacing between the two frames 7 can be adjusted.

According to the embodiment described above, it is possible to realize a hand lift that simplifies the installation work of the panel.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention and its equivalents described in the claims. Moreover, each of the above-described embodiments can be implemented in combination with each other.

1 Pallet jack, 2,4 pedestal, 3 wheels, 5,6 struts, 7,8 frame, 10 suction pad, 12 pad body, 14 sliding frame, 20 intake / exhaust tube, 21 air valve, 22 air pedal, 30 jack lever , 31 jack, 32 handle, 33 release lever, 34 wheel support, 40 handle, 50 auxiliary frame, 52 intake / exhaust lever, 100 board

Claims (5)

A pallet jack that transports the board and installs the board on the channel base.
A first support member that is sandwiched and supported from both sides of the board,
A jack that raises and lowers the first support member,
The first support member includes a second suction mechanism for fixing the board, and is provided so as to extend the first support member in a direction of sandwiching the board and surround the board together with the first support member in a U-shape. 2 A second support member that supports the board from a direction different from the direction in which the board is sandwiched by the suction mechanism, and
With
The first support member is pressed against the panel saw including a first suction mechanism capable of fixing the plate, is supported an end by the second support member, the direction of the second supporting member is stretched A hand lift that moves along. The jacks, pallet jack of claim 1 Symbol mounting includes a hydraulic jack. The hand lift according to claim 1 or 2 , wherein the first suction mechanism includes a suction pad and a pump for manually exhausting air in the suction pad. The first suction mechanism is connected to said suction pad, seen including a support frame connected to the rotatably said first support member,
The first support member includes a concave surface and includes a concave surface.
The hand lift according to claim 3 , wherein the support frame slides along the concave surface. The hand lift according to any one of claims 1 to 4 , further comprising a third support member which is arranged at a position facing the second support member and can fix the board.

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