JPH059270Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an electronic device transport vehicle that transports electronic devices with the bottom of the electronic devices raised.

[Conventional technology]

FIG. 9 is a schematic front view showing a conventional electronic device transport vehicle, and FIG. 10 is a schematic side view thereof. In the figure, 1 is a frame, 2 is a leg fixed to the frame 1, 3 is a caster attached to the leg 2,
4 is a leg fixed to the frame 1, 5 is a flexible caster attached to the leg 4, 6 is a fork attached to the frame 1 so that it can be raised and lowered, 7 is a hydraulic pump fixed to the frame 1, and 8 is a hydraulic pump 7
9 is the rod of the hydraulic pump 7, 10 is the sprocket attached to the tip of the rod 9, 1
1 is a chain whose one end is fixed to the fork 6 and the other end is fixed to the hydraulic pump 7;
is hung on sprocket 10. 12 is a handle provided on the frame 1, 13 is an electronic device, and 13a is the bottom of the electronic device 13.

In this electronic device transport vehicle, after inserting the fork 6 between the floor and the bottom 13a of the electronic device 13, by operating the lever 8 and extending the rod 9, the fork 6 is raised via the chain 11. The electronic device 13 can be lifted from the floor. In this state, when the electronic device 13 is transported to the installation location and the rod 9 is retracted by operating the lever 8, the fork 6 is lowered and the electronic device 13 can be installed on the floor.

[Problem that the invention attempts to solve]

However, in such an electronic device transport vehicle, the weight of the electronic device 13 is 200 to 400 kg, so it is necessary to make the frame 1, legs 2, etc. large to prevent the electronic device 13 from falling over. As the size increases, the dimension in the front-rear direction, that is, the dimension in the left-right direction of the paper in FIG. 13
cannot be installed.

This invention was made in order to solve the above-mentioned problems, and the purpose is to provide a lightweight and small-sized electronic device transport vehicle.

[Means for solving problems]

In order to achieve this object, the present invention provides an electronic device transport vehicle for transporting the electronic device with the bottom of the electronic device lifted, comprising: a frame; wheels attached to the frame;
A hydraulic pump fixed to a frame, a hydraulic cylinder fixed to the frame and driven by pressure oil from the hydraulic pump, and a lift table attached to the frame so as to be movable up and down. are attached to the left and right sides of the above frame so that they extend horizontally to the floor,
The hydraulic cylinders are simultaneously extended by the hydraulic pump, and the front and rear arms are linked by link rods so that when the cylinder rod of the hydraulic cylinder is extended, one side in contact with the tip of the cylinder rod is pushed, and the other side does the same. A mechanism is provided in which the rotation centers of the pair of left and right arms are fixed by a connecting shaft to synchronize the movements of the left and right arms, and the lift table on the arms can be raised.

[Effect]

In this electronic equipment carrier, the part to which the lift table is attached is inserted between the floor and the bottom of the electronic equipment, and when the hydraulic cylinder is driven by pressure oil from the hydraulic pump, the arm rotates and the roller can raise the lift table and lift the electronic device off the floor. In this state, when the electronic device is transported to the installation location and oil is returned from the hydraulic cylinder to the hydraulic pump, the lift table is lowered and the electronic device can be installed on the floor.

〔Example〕

Fig. 1 is a schematic plan view showing an electronic equipment carrier according to this invention, Fig. 2 is a schematic front view, Fig. 3 is a schematic side view, and Fig. 4 is the same as shown in Figs. 1 to 3. A schematic plan view showing the electronic equipment carrier with the lift table removed, FIG. 5 is a sectional view taken along line A-A in FIG. 4 which also shows the lift table, and FIG. 6 is a schematic plan view showing the lift table. It is a BB sectional view of. In the figure, 14 is a frame, 37 is a flexible caster attached to the four corners of the frame 14, 15 is a hydraulic pump fixed to the frame 14, 16 is an input shaft of the hydraulic pump 15, and 17 is a lever fixed to the input shaft 16. When the input shaft 16 is rotated by pressing down on the lever 17, an amount of pressure oil corresponding to the amount of pressing down on the lever 17 is generated from the hydraulic pump 15. Then, when the force applied to the lever 17 is stopped, The lever 17 returns to the illustrated position, and in this state, oil does not return to the hydraulic pump 15. If the lever 17 is further pushed down,
Pressure oil is further generated from the hydraulic pump 15, and when the lever 17 is pushed up from the illustrated position, a flow rate of oil corresponding to the amount by which the lever 17 is pushed up is supplied to the hydraulic pump 15.
Return to 18 is a bracket fixed to the frame 14, 19 is a safety lever movably supported by the bracket 18, 20 is a large diameter portion provided on the safety lever 19, and 21 is the bracket 18 and the large diameter portion 20.
The spring 22 is provided between the safety lever 19
The presser plate 22 is fixed to the tip of the lever 17, and the presser plate 22 is engaged with the lever 17. 23 is a pair of hydraulic cylinders fixed to both sides of the frame 14, 24 is a pipe connecting the hydraulic pump 15 and the hydraulic cylinders 23, 25 is a rotating shaft rotatably supported by the frame 14, and 26 is a rotating shaft 25. The cam plate 26 is in contact with the piston rod of the hydraulic cylinder 23. 27 is an arm fixed to the rotating shaft 25; 28 is a roller rotatably attached to one end of the arm 27; 29 is a rotating shaft rotatably supported on the frame 14; 30 is the rotating shaft 29
31 is a roller rotatably attached to one end of the arm 30; 32 is a link rod whose both ends are rotatably attached to the other ends of the arms 27 and 30; 33 is a frame 14;
34 is a lift table, 3 is a cylindrical body fixed to
5 is a movement prevention plate provided on the lift table 34, 36 is a rod fixed to the lower surface of the lift table 34, the rod 36 is inserted into the cylindrical body 33, and the lift table 34 is movable up and down on the frame 14. installed. 38 is a slit provided in the frame 14; 39 is a slit provided in the frame 14;
40 is a movement preventing metal fitting provided in the slit 38, 41 is a long hole provided in the movement preventing metal fitting 40, and the shaft 39 is inserted into the long hole 41. 42 is a holding member for holding the movement prevention fitting 40, 43 is a cylindrical body, and 44 is a handle detachably attached to the cylindrical body 43.

In this electronic device transport vehicle, the part to which the lift table 34 is attached is inserted between the floor surface and the bottom of the electronic device, and as shown in FIG. Prevention fittings 40
When the movement prevention metal fitting 40 is held in the holding member 42 and the movement prevention metal fitting 40 is in an upright state, pressurized oil is generated from the hydraulic pump 15 by pushing down the lever 17. is supplied to the hydraulic cylinder 23 via a pipe line 24,
As shown in FIG. 7, the piston rod extends into the hydraulic cylinder 23, the cam plate 26 rotates, and the rotating shaft 25 rotates, so the arm 27 rotates and the arm 30 rotates via the link rod 32. As the electronic device is moved, the rollers 28 and 31 raise the lift table 34, so that the electronic device can be lifted from the floor. In this state, after transporting the electronic device to the installation location, the safety lever 19 is pulled against the spring 21, and when the lever 17 is pushed up, the oil returns from the hydraulic cylinder 23 to the hydraulic pump 15. The piston rod retracts, the arms 27 and 30 rotate, and the lift table 34 is lowered, allowing the electronic device to be placed on the floor. In this state, after lifting the movement prevention metal fitting 40 upwards and overturning the movement prevention metal fitting 40, by grasping the handle 44 and pulling it, the lift table 30 can be removed from between the floor and the bottom of the electronic device.
The part provided with can be extracted.

In this way, in this electronic equipment carrier,
The lift table 3 is rotated by the hydraulic cylinder 23 to rotate the arms 27 and 30 having the rollers 28 and 31.
Since the frame 14 is raised, there is no need to increase the size of the frame 14, so the weight does not increase, and the dimension in the front-rear direction, that is, the dimension in the left-right direction of the paper of FIG. 1, can be reduced. Furthermore, since the pair of arms 30 are fixed to one rotating shaft 29, even if the forces acting on the rollers 28, 31 on both sides are different, the arms 27, 30 on both sides
Since the rotation angles of the lift table 34 are the same,
rises horizontally. Furthermore, if the movement prevention fitting 40 is placed in an upright position, the movement prevention plate 35 and the movement prevention fitting 40 can prevent the electronic device from moving. Furthermore, unless the safety lever 19 is pulled, the lever 17 cannot be pushed up and the lift table 34 cannot be lowered, so the electronic device will not be lowered against the operator's intention. Work can be done safely. Further, since the handle 44 is detachably attached, when the electronic device carrier itself is transported, if the handle 44 is removed, the electronic device carrier itself can be transported in a small space.

In addition, in the above-mentioned Example, although the flexible caster 37 was used as a wheel, other wheels may be used. Further, in the above embodiment, the arm 27 was rotated by rotating the cam plate 26 with the hydraulic cylinder 23, but the arm 27 may be rotated from the hydraulic cylinder 23 through other means. .

[Effect of idea]

As explained above, in the electronic equipment carrier according to the invention, the lift table is raised by rotating the arm with the rollers using the hydraulic cylinder, so there is no need to increase the size of the frame.
Since the weight does not increase and the dimensions in the front and back directions can be reduced, it is possible to transport electronic devices into narrow aisles or install new electronic devices between already installed electronic devices. can do. In this way, the effects of this invention are remarkable.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing an electronic equipment carrier according to this invention, Fig. 2 is a schematic front view, Fig. 3 is a schematic side view, and Fig. 4 is the same as shown in Figs. 1 to 3. A schematic plan view showing the electronic equipment carrier with the lift table removed, FIG. 5 is a sectional view taken along line A-A in FIG. 4 which also shows the lift table, and FIG. 6 is a schematic plan view showing the lift table. 7 and 8 are explanatory views of the operation of the electronic device carrier shown in FIGS. 1 to 6, and FIG. 9 is a schematic front view showing the conventional electronic device carrier, FIG. 10 is also a schematic side view. 13...Electronic device, 13a...Bottom, 14...
Frame, 15... Hydraulic pump, 23... Hydraulic cylinder, 25... Rotating shaft, 26... Cam plate, 27
... Arm, 28 ... Roller, 29 ... Rotating shaft,
30... Arm, 31... Roller, 32... Link rod, 34... Lift table, 37... Flexible caster.

Claims (1)

[Scope of utility model registration request] An electronic device transport vehicle for transporting the electronic device with the bottom of the electronic device lifted, comprising a frame, wheels attached to the frame, a hydraulic pump fixed to the frame, and a hydraulic pump fixed to the frame and the above-mentioned device. A hydraulic cylinder driven by pressure oil from a hydraulic pump and a lift table attached to the frame so as to be movable up and down, the hydraulic cylinders extending horizontally to the floor on the left and right sides of the frame, respectively. attachment,
The hydraulic cylinders are simultaneously extended by the hydraulic pump, and the front and rear arms are linked by link rods so that when the cylinder rod of the hydraulic cylinder is extended, one side in contact with the tip of the cylinder rod is pushed, and the other side does the same. and having a mechanism configured to connect and fix the rotation centers of the pair of left and right arms with a connecting shaft, synchronize the movements of the left and right arms, and raise the lift table on the arms. Characteristic electronic equipment transport vehicle.