JPH06344921A - Transferring device for lifting object - Google Patents

Abstract

PURPOSE:To improve the small turning performance by installing the lifter for a cargo deck having the same structure and forks installed in free elevation and lowering and connecting the lifter in the state where the forks are inserted in under the bottom surface of a load, by a connecting mechanism. CONSTITUTION:When a heavy object, e.g. an electronic calculator 11 is lifted up and transported in an electronic calculator room, one lift 31 is operated by gripping a pushing handle, and brought into contact with the front surface side of the case body of the electronic calculator 11, and the left and right engaging finger parts 56 in part of a fork 35 placed at the lowest position are inserted into the gap between the bottom surface of the electronic calculator 11 and a floor. Then, similarly, the other lifter 31A is set on the back surface side of the case body of the electronic calculator 11, and a pair of connecting rods 32 and 33 are introduced into the gap between the bottom surface of the electronic calculator and the floor, and both edge parts are inserted into a connecting pipe part installed at the lower parts of the forks 35 and 35A, and fixed by tightening a nut. Then, the operating handles 72 and 72A for rise are simultaneously operated, and hydraulic jacks 36 and 36A are driven to raise the electronic calculator 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting and carrying device,
In particular, the present invention relates to a lifting and carrying device suitable for lifting and carrying an electronic computer in a computer room.

With the increase in the amount of information in recent years, the number of computers installed in the computer room is increasing, and the floor area excluding the floor area where the computers in the computer room are installed is It is becoming narrower than it is.

For this reason, it is necessary that the lifting and carrying device used to lift and carry the electronic computer in the electronic computer room has a structure that allows a small rotation and requires a small space for work. It has become to.

[0004]

2. Description of the Related Art For convenience of explanation, first, the arrangement of electronic computers in an electronic computer room will be described.

As shown in FIG. 12, a plurality of electronic computers (hereinafter referred to as computers) 11 are arranged side by side in the computer room 10.

The space 12 around the computer 11 has a width W
Is preferably 800 mm or more, but may be 800 mm or less in an actual site.

Each computer 11 is supported by a free access floor 14 by four legs 13 as shown in FIG. The casters 15 are slightly floating above the floor 14.

The depth dimension L of the computer 11 is about 1 m.

FIG. 14 shows a conventional lifting and carrying device 20.

The device 20 has a main body 21 and a fork 22.

The main body 21 has casters 23, a hydraulic jack 24, and a handle 25.

The fork 22 has a length l ₁ of about 900 mm.
And has casters 26 on the lower surface of the tip.

By operating the handle 25, the hydraulic jack 24 is operated, the fork 22 is moved upward, and the caster 26 is projected downward.

The fork 22 moves upward with its tip supported by the caster 26.

This device 20 is used by inserting a long fork 22 between the computer 11 and the free access floor 14 and operating a handle 25 as shown in FIG.

The fork 22 supports the computer 11 and lifts the computer 11.

The computer 11 is transported in this state.

[0018]

In the apparatus 20, the fork 22 has a considerably long dimension so that the entire computer 11 can be supported by the fork 22.

This device 20 is used by first setting it in the state shown by the chain double-dashed line in FIG. 15, advancing it in the direction of arrow 27, and inserting the fork 22 below the computer 11.

Therefore, in order to use the device 20, it is necessary to have a space of about 1 m on one side of the computer 11, which may not be available depending on the computer room.

Even if it could be used, it was not easy to turn around, and the workability was not good.

Therefore, it is an object of the present invention to provide a lifting and carrying apparatus in which the length of the fork is shortened to realize a small turning structure.

[0023]

According to the invention of claim 1, there is provided a fork having a locking finger portion for hooking an end portion of a bottom surface of a load, and a fork upward moving mechanism for moving the fork upward. Two lifters and a connecting mechanism that connects the two lifters in a state where the locking arm portions of the forks of the two lifters are inserted from both sides of the luggage to the lower side of the bottom surface thereof, With the two lifters being connected by the connecting mechanism, the fork moving mechanisms of the lifters are operated substantially simultaneously.

The invention according to claim 2 has the same structure, and two lifters for sandwiching a load from both sides thereof are connected to the two lifters so that the state in which the load is sandwiched is maintained. Each lifter is composed of a connecting mechanism, and each lifter has a lifter body composed of a frame and casters, and a locking finger portion having a length for hooking an end portion of the bottom surface of the luggage, and is guided by the frame to move up and down. And the fork in which the locking finger portion is located at a height near the lower end of the caster when moved to the lowest position, and attached to the lifter body,
The fork upward moving mechanism for moving the fork upwards, and the connecting mechanism includes a connecting pipe portion fixed to the fork, and both ends of the connecting pipe portion are fitted to the pipe portion, and two connecting portions of the lifter are provided. A connecting rod that is laid horizontally between the two lifters, and a nut that fixes the rod to the pipe portion in a state in which the locking fingers of the forks are inserted below the bottom surface of the luggage, With the forks of the two lifters being connected by the connecting rod, the fork moving mechanisms of the lifters are operated substantially simultaneously.

[0025]

According to the present invention, the two lifters having the same structure as described in claim 1 are used by sandwiching the luggage from both sides. It is sufficient that the locking fingers of the forks of each lifter hook the bottom edge of the luggage. Act on.

The configuration using two lifters works so that the weight supported by each lifter is half the weight of the load.

The connecting mechanism changes the positional relationship between the two lifters.
It acts to restrain the luggage according to the external dimensions.

According to a second aspect of the present invention, two lifters having the same structure are used by sandwiching a load from both sides. It is sufficient that the locking fingers of the forks of each lifter hook the bottom end of the load. Act on.

The configuration using two lifters works so that the weight supported by each lifter is half the weight of the load.

The connecting mechanism using the connecting rod acts so as to restrain the positional relationship between the two lifters in accordance with the outer dimensions of the load.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 2, 3 and 4, a lifting and conveying apparatus 30 according to an embodiment of the present invention comprises two lifters 31, 3A having the same structure and two connecting rods 32. , 33.

As shown in FIG. 5, the lifter 30 comprises a lifter main body 34, a fork 35, and a hydraulic jack 36 as a fork moving mechanism.

As shown in FIGS. 1 and 4, the lifter main body 34 comprises a gate-shaped frame 37 and a pair of left and right casters 38, 39 of a turning type.

The frame 37 includes a base beam 40, columns 41 and 42 standing near both ends of the beam 40, and a column 4.
The push handle 43 is provided between the upper ends of the terminals 1 and 42, and has a planar structure.

The casters 38 and 39 are provided below both ends of the base beam 40.

Each caster 38, 39 is provided with a plug-in type turning fixing pin 44, 45.

A foot-type leg 46 is provided at the center of the base beam 40.

The fork 35 includes a pair of left and right pillar portions 50, 5
1, the beam portion 52 between the upper ends of the pillar portions 50 and 51, and the pillar portion 5
Beam part 53 between the central parts of 0 and 51, and beam parts 52 and 53
A beam portion 54 connecting the centers of the beam portions, a projecting arm portion 55 provided so as to project from the beam portion 54, and locking finger portions 56, 57 projecting in an L-shape from the lower ends of the column portions 50, 51.
And guide pieces 58, 59 provided on the beam portions 52, 53 of the pillar portion 50, and a guide piece 60 provided on the beam portions 52, 53 of the other pillar portion 51. , 61.

The locking fingers 56, 57 have a length l ₂ of only about 130 mm, which is short, about one sixth of the length l ₁ of the fork 22 of the conventional device 10 shown in FIG.

Balls 64 and 65 are rotatably provided at the tips of the respective locking fingers 56 and 57. Balls 64,65
Of the locking fingers 56, 57 project from the lower surface of the locking fingers 56, 57.

The locking fingers 5 at the lower ends of the pillars 50, 51 are also provided.
Urethane cushions 66 and 67 are attached to the surfaces on the side of 6 and 57.

The hydraulic jack 36 is provided with a main body 70 attached to the central upper surface of the base beam portion 40, and the projecting arm portion 55 corresponds to the top portion of the push-up rod 70.

Reference numeral 72 denotes a raising operation handle, which is repeatedly operated in the direction of arrow A in the plane of the frame 37.

By repeatedly operating the handle 72, the push-up rod 70 is moved upward.

Reference numeral 73 is a lowering operation knob. When operated, the action of hydraulic pressure on the push-up rod 70 is released, and the push-up rod 70 is lowered.

Reference numerals 82 and 83 denote connecting pipe portions, which extend from the opposite side surfaces of the lower ends of the column portions 50 and 51 of the fork 37 to the opposite side surfaces of the locking finger portions 56 and 57, respectively. It is fixed by welding and has a length l ₃ of about 100 mm.

The inner diameters of the connecting pipe portions 82 and 83 are
The size is such that the connecting rods 32 and 33 are just inserted.

The other lifter 31A has the same structure as the lifter 31 described above, and the corresponding parts are designated by the same reference numerals with the subscript A, and the description thereof is omitted.

Threaded portions 32a and 32b are formed on both end portions of the connecting rod 32.

Threaded portions 33a and 33b are also formed on both end portions of the connecting rod 33.

With the lifters 31 and 31A facing each other, one end side of the connecting rod 32 is inserted into the connecting pipe portion 82 of the lifter 31 and penetrated therethrough, and the other end side is used for connecting the lifter 31A. The pipe portion 83A is inserted into the pipe portion 83A, and the nut portion 86 is screwed into the screw portion 33a of the portion protruding from the pipe portion 82 for connection.
A nut 86 is attached to the screw portion 33b of the portion protruding from A.
Screw A together.

Similarly, the connecting pipe portions 83 and 82A are inserted through both ends of another connecting rod 33, and nuts 87 and 87A are screwed into the screw portions 33a and 33b from the outside of the connecting pipe portions 83 and 82A.

As a result, the lifters 31 and 31A are connected by the two parallel connecting rods 32 and 33, and the movement in the separating direction is restricted.

The connecting rods 32 and 33, the connecting pipe portions 82 and 83, and the nuts 86 and 87 constitute a connecting mechanism.

When not in use, the operator steps on the foot and lowers the leg 46. As a result, the lifters 31 and 31A are
The two casters 38 and 39 and the one leg 46 are supported at a total of three points and are kept in a standing state. That is, the leg 46 is for preventing the fall.

When the leg 46 is stepped on for the second time, the leg 46 moves upward, and the lifters 31 and 31A are in a freely movable state.

Next, the object lifting and transporting device 30 having the above structure.
The use of is explained.

In the computer room 10 shown in FIG. 12, the computer 1
The operation of lifting and transporting 1 will be described as an example.

The work is performed by the two workers according to the following procedure.

In the lifters 31 and 31A, the forks 35 and 35A are in the lowest position as shown in FIG. The locking fingers 56, 57 are located at a height near the lower ends of the casters 38, 39, and the height h ₁ of the locking fingers 56, 57 from the floor 14 is as low as 40 mm.

The height h ₁ can be lowered because the balls 64,
This is because 65 is used and is embedded in the locking finger portions 56 and 57. I. Preparation for Lifting (Refer to FIGS. 6, 7, and 8) Holding the push handle 43, the one lifter 31 is operated, and as shown by the two-dot chain line in FIG.
The casing 17 is made to face the front surface 17a side, and is moved in the direction of arrow 90 until the urethane cushions 66, 67 come into contact with the casing 17.

As a result, the locking finger portion 5 of the fork 35 is
6, 57 are inserted into the gap 18 between the bottom surface 16 of the computer 11 and the floor 14.

Here, the lifter 31 includes two casters 3
It is supported at four points by the 8, 39 and the two balls 64, 65, and there is no risk of falling.

Also, the casters 38, 39 and the ball 6
The lifter 31 is smoothly moved by the rotation of the rollers 4, 65.

Another lifter 31A is operated, and this lifter 31A is set on the rear surface 17b side of the housing 17 of the computer 11, like the lifter 31 described above.

As shown in FIG. 7, lifters 31 and 31A are provided.
Is the line 92 connecting the locking finger portions 56 and 57A and the locking finger portion 5
In the approximate center between the line 93 connecting 7 and 56A, the computer 1
It is arranged so that the center of gravity G of 1 is located.

Insert the connecting rod 32 into the gap 18,
The both ends are passed through the connecting pipe portions 82 and 83A.

Another connecting rod 33 is put in the gap 18 and both ends thereof are passed through the connecting pipe portions 83, 82A.

Tighten the nuts 86, 87, 86A, 87A.

With the above, the preparation for lifting is completed.

The two lifters 31 and 31A are connected to the computer 11
Is sandwiched between the front surface 17a and the rear surface 17b, and the forks 35, 35A are connected by the two connecting rods 32, 33 that cross the gap 18. II. Lifting (see FIGS. 9, 10, and 1) Lifting operation handle 72 of the lifter 31 and the lifter 31
Simultaneously operate the ascending operation handle 72A.

As a result, the hydraulic jacks 36 and 3A are driven, and the fork 35 of the lifter 31 is moved to the hydraulic jack 36.
Is pushed up by the fork 35A of the lifter 31A.
Is pushed up by the hydraulic jack 36A and moves upward by about the same amount.

The locking fingers 56 and 57 of the fork 35 lock the portion 16b of the bottom surface 16 of the computer 11 near the end 16a on the front surface 17a side.

Locking fingers 56A, 57 of another fork 35
A is the end 1 on the back surface 17b side of the bottom surface 16 of the computer 11.
The portion 16d near 6c is locked.

As shown in FIG. 1 as well, the computer 11 is lifted by supporting two points on the front surface 17a side of the bottom surface 16 with the forks 35 and two points on the rear surface 17b side with the forks 35A.

Here, in the lifted state, each lifter 3
The force applied to 1, 31A will be described.

Assuming that the weight of the computer 11 is W, as shown in FIG. 9, the locking finger portions 56 and 57 of the forks 35 and 35A, respectively.
To power

[0078]

[Equation 1]

It costs.

As a result, the counterclockwise moment M ₁ acts on the lifter 31 with respect to the point P ₁ . Lifter 3
A clockwise moment M ₂ acts on the point 1A with respect to the point P ₂ .

[0081] the connecting pipe portions 82 and 83 that secure the connecting rod 32 and 33, as shown in FIG. 11, acts moment M _1, the connecting pipe portion 82A, the 83A moment M ₂ To work.

Here, the connecting pipe portions 82, 83, 82
Since A and 83A are fitted and fixed to both ends of the connecting rods 32 and 33, the moments M ₁ and M ₂ are received by the two connecting rods 32 and 33.

Therefore, the lifters 31 and 31A do not tilt and maintain the vertical state.

Therefore, the computer 11 and the forks 35, 3
As for the relationship with 5A, as shown in FIG. 9, the pillar portion 50 (51)
A gap 90 exists between the front surface 17a of the housing 17 and the front surface 17a of the housing 17, and a clearance 91 also exists between the pillar portion 50A (51A) and the back surface 17b of the housing 17.

Therefore, the front surface 17a and the back surface 1 of the housing 17 are
7b is not damaged.

That is, the computer 11 can be lifted without fear of damaging the housing 17.

Since the weight of each lifter 31, 31A is half the weight of the computer 11, the computer 11
Is larger than today's and has increased weight,
You can lift a computer. III. Transportation (FIGS. 9, 10, and 1) By pushing the push handle 43, the lifters 31 and 31A connected to each other are moved to transport the computer 11. IV. Installation After transporting the computer 11 to the installation location, set the seismic isolation foot and set the lowering knobs 73, 73A of the lifters 31, 31A at the same time.

As a result, the pressure of the hydraulic jacks 36, 36A is released, the forks 35, 35A simultaneously descend, and the computer 11 descends while maintaining the horizontal state.

As a result, the state shown in FIG. 2 is reached, and the computer 11 is installed at the target location.

The set screws 86, 87, 86A, 87A are loosened, the lifters 31, 31A are separated from the computer 11, and the locking fingers 56, 57, 56A, 5 of the forks 35, 35A.
7A is pulled out from the computer 11.

Further, the connecting rods 32 and 33 are removed from the gap 18.

With the above, the installation is completed.

Here, since the length l ₂ of the locking fingers 56 and 57 is as short as about 130 mm, the lifter 31 has a small turning motion,
The distance l _{4 by} which the lifter main body 34 is separated from the computer 11 can be as short as several tens of cm.

Therefore, the space around the computer 11 is small, and the computer 11 can be used even in a place where the conventional device 20 shown in FIG. 14 cannot be used.

The device 30 described above can also be used when replacing the foot of an already installed computer.

In this case, of the above-mentioned works, work other than transportation may be performed.

The device 30 described above can also be used for lifting and carrying loads other than computers.

Further, the two lifters 31, 31A are connected by the connecting rods 32, 33 stopped by nuts 86, 86A, 87, 87A, and in FIG.
The dimension a between the two lifters 31 and 31A can be freely determined.

As a result, even if the external dimensions of the computer 11, which is a baggage, are different, the two lifters 31, 31A can be set and used with the computer sandwiched therebetween.

[0100]

As described above, according to the invention of claim 1, the following effects are obtained.

Since the locking fingers are short, the lifter has a small turning space and can be used even when the space around the luggage is small,
Moreover, it can be used with good workability.

Since two lifters are used, a heavy load can be lifted.

The package can be used regardless of the external dimensions of the package, and the package can be stably lifted.

According to the invention of claim 2, it has the following effects.

Since the locking fingers are short, the lifter has a small turning space and can be used even when the space around the luggage is small,
Moreover, it can be used with good workability.

Since two lifters are used, a heavy load can be lifted.

The package can be used regardless of the external dimensions of the package, and the package can be stably lifted.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state of using an object raising and conveying device according to an embodiment of the present invention.

FIG. 2 is an exploded front view of the material handling and conveying device of FIG.

FIG. 3 is a plan view of the device of FIG.

FIG. 4 is a side view of the device of FIG.

FIG. 5 is an exploded view of the lifter.

FIG. 6 is a diagram showing the setting of the device shown in FIG.
It is a figure showing the state where preparation for lifting was completed.

FIG. 7 is a plan view of the state of FIG.

FIG. 8 is a side view of the state of FIG.

FIG. 9 is a front view showing a state where the electronic computer is lifted.

FIG. 10 is a side view showing the state of FIG.

FIG. 11 is a diagram for explaining the force used for the connecting rod when the computer is lifted.

FIG. 12 is a diagram showing an arrangement of electronic computers in an electronic computer room.

FIG. 13 is a diagram showing an installed state of the electronic computer in FIG.

FIG. 14 is a diagram showing an example of a conventional lifting and carrying apparatus.

FIG. 15 is a view showing a usage state of the material raising and conveying device of FIG. 14;

[Explanation of symbols]

 10 electronic computer room 11 electronic computer 12 space around the electronic computer 16 bottom surface 16a, 16c end 16b end portion in the vicinity of end 16a 16d end portion 16c in the vicinity portion 17 housing 17a front surface 17b rear surface 18 gap 30 lifting and conveying device 31, 31A lifter 32, 33 connecting rod 32a, 32b, 33a, 33b screw part 34 lifter body 35 fork 36 hydraulic jack 37 gate-shaped frame 38, 39 caster 40 base beam 41, 42 pillar 43 push handle 44, 45 plug-type swivel fixing Pins 46 Legs 50,51 Columns 52,53,54 Beams 55 Overhanging arms 56,57 Locking fingers 58-61 Guide pieces 62,63 Guide grooves 64,65 Balls 66,67 Urethane cushion 70 Main body 71 Push up Rod 72 Lifting handle 73 Lifting knob 2,83 line connecting the engaging finger to 92,93 phase opposite arrows 90 and 91 a gap indicating the direction to move the connecting pipe portion 86, 87 nut 89 lifter

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Wataru Ishizu 1-20-10 Oi, Shinagawa-ku, Tokyo Within Fujitsu System Construction Ltd. (72) Inventor Takayoshi Nitta 1-20-10 Oi, Shinagawa-ku, Tokyo Within Fujitsu System Construction Ltd. (72) Inventor Riwakazu Sakakibara 1-20-10 Oi, Shinagawa-ku, Tokyo Within Fujitsu System Construction Ltd.

Claims (2)

[Claims] 1. An end portion (16b, 1b) of the bottom surface of the luggage
6d) two forklifters (3) having the same structure having a fork (35) having locking fingers (56, 57) for hooking, and a fork upward movement mechanism (36) for moving the fork upward.
1, 31A) and a connecting mechanism (32, 33) for connecting the two lifters in a state in which the locking arms of the forks of the two lifters are inserted from both sides of the luggage to the lower side of the bottom surface thereof. , 82, 83,
86, 87), wherein the two lifters are connected by the connecting mechanism, and the fork moving mechanism of each lifter is operated substantially at the same time. . 2. The two lifters (31, 31A) having the same structure and sandwiching a load from both sides thereof, and the two lifters are connected so as to maintain the state of sandwiching the load. Connection mechanism (32, 33, 82, 83,
86, 87), each of the lifters includes a lifter body (34) including a frame (37) and casters (38, 39), and a length (l ₂ ) Has a locking finger portion (56, 57), is vertically guided by the frame, and is moved to the lowest position, the locking finger portion is located at a height near the lower end of the caster. (35) and a fork upward movement mechanism (36) that is attached to the lifter body and moves the fork upward, and the connection mechanism includes a connection pipe portion (82,
83), connecting rods (32, 33) that are fitted between the two pipes in the vicinity of both ends thereof and are laid horizontally between the two lifters, and the two lifters are the locking finger portions of the forks. With nuts (86, 87) for fixing the rod to the pipe section in a state in which is inserted into the lower side of the bottom of the luggage, and the forks of the two lifters are connected by the connecting rod. An object-carrying and conveying device characterized in that the fork moving mechanism of each lifter is operated substantially simultaneously.