JPH0848493A - Shifting truck device for simple lift - Google Patents

Abstract

PURPOSE:To obtain the favorable stability without enlarging the whole size extremely. CONSTITUTION:On a truck frame 10, the rear part supporting legs 20 and 20 and the front part supporting legs 30 and 30 are installed. The rear part supporting legs 20 and 20 have the swing center at both the side surface rear part of the truck frame 10, and can be swung horizontally up to the operation position opened in an obtuse angle from the accommodation position parallel to the side surface of the truck frame 10, and the from part supporting legs 30 and 30 have the swing center at both the end parts of the front surface of the truck frame 10, and can be horizontally swung up to the operation position opened in an obtuse angle from the accommodation position parallel to the front surface of the truck frame 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley device for moving a simple lift which can achieve sufficient stability during use and can be compactly reduced in size when not in use.

[0002]

2. Description of the Related Art A mobile simple lift is known in which lift columns are erected on a bogie frame with casters.

This is equipped with a swing arm type support leg capable of horizontally swinging with respect to a bogie frame. The support leg can be widely opened to the outside of the bogie frame to ground the front end portion, thereby increasing the substantial grounding area of the bogie frame and improving the overall stability when lifting the load. Further, the support leg is housed so as to be parallel to the side surface of the bogie frame, whereby the overall size can be reduced compactly. Incidentally, such a pair of support legs is generally provided on the left and right sides of the bogie frame.

[0004]

However, according to the prior art, there is a problem that it is difficult to obtain sufficient stability because the supporting legs are provided only on the left and right sides of the bogie frame. . Since the support legs need to be compactly stored when not in use, they cannot be made extremely long compared to the dimensions of the bogie frame,
Therefore, even if it is opened left and right, the substantial ground contact area cannot be made sufficiently large.

Incidentally, such a problem is most prominent when the swing boom is mounted on the lift column and the suspended load is horizontally moved. This is because when the hoisted load is horizontally moved, an unevenly distributed load is applied to the lift column, so that if the substantial ground contact area is insufficient, the entire body will easily fall over.

Therefore, in view of the problems of the prior art, an object of the present invention is to provide a pair of rear support legs and front support legs to the bogie frame, thereby making the length of each support leg extremely. It is an object of the present invention to provide a moving carriage device for a simple lift that can easily achieve sufficient stability without lengthening.

[0007]

The structure of the present invention for achieving the above object comprises a trolley frame having a rectangular shape which is long in the front and rear direction, a lift pillar is erected on the rear portion of the upper surface, and casters for movement on the lower surface. A pair of rear support legs having swing centers at the rear portions of both sides of the bogie frame, and a pair of front support legs having swing centers at both front end portions of the bogie frame. Horizontal swing is possible from a storage position parallel to the side of the frame to an operating position that opens at an obtuse angle, and the front support legs can horizontally swing from a storage position that is parallel to the front surface of the bogie frame to an operating position that opens at an obtuse angle. What to do is the gist.

The front support legs can be connected and locked to each other at the center of the front surface of the carriage frame when the storage position is set, and the rear support legs can be locked when the storage position is set. It can be lockable at the front part of the side surface.

Further, the front support leg and the rear support leg may be equipped with a vertically adjustable ground plate at their tip ends.

[0010]

According to the structure of the invention, the rear support leg,
By opening the front support legs in their respective operating positions,
The substantial ground contact area of the trolley frame can be increased and the overall stability can be improved, while returning to the storage position allows the overall size to be compactly reduced. Since the rear support leg has the swing center at the rear of the bogie frame and the front support leg has the swing center at the front, both of them are different from the case where only one of them is used. It is possible to remarkably increase the substantial ground contact area.

When the front support legs in the storage position can be locked at the center of the front surface of the truck frame, the length of each front support leg is about 1/2 of the front surface of the truck frame, It can be stored most efficiently parallel to the front surface of the bogie frame.

When the rear support legs in the stowed position are lockable at the front of the side face, each rear support leg is approximately the same length as the side face of the bogie frame, and likewise with respect to the side face of the bogie frame. It is possible to store them most efficiently in parallel.

The front support leg and the rear support leg can be grounded through the grounding plate by equipping the tip end thereof with a grounding plate, and a greater supporting force can be exerted.

[0014]

Embodiments Embodiments will be described below with reference to the drawings.

The trolley device for moving a simple lift comprises a pair of rear support legs 20, 20 and front support legs 30, 30 horizontally oscillatably mounted on a trolley frame 10 (FIG. 1).

The bogie frame 10 includes vertical frames 11 and 1.
1. The horizontal frames 12 and 12 are assembled into a rectangular frame shape that is long in the front-rear direction. A lift column 40 is erected on the rear portion of the upper surface of the trolley frame 10 via reinforcing members 13, 13, and casters 14 for movement are provided on the four corners of the lower surface.
14 are provided. Also, the rear horizontal frame 12
A handrail 15 for movement is erected on the top. In addition,
The casters 14, 14, ... Have a rotating type on the rear side of the bogie frame 10 and a fixed type on the front side.

The rear supporting legs 20 and 20 are mounted on the carriage frame 1.
0 has a swing center at the rear of both side surfaces (FIGS. 1 and 2). That is, brackets 17a, 17a into which the mounting pins 17 are vertically inserted are horizontally provided at the rear portions of the side surfaces of the bogie frame 10. A stopper plate 17b is provided between the brackets 17a, 17a so as to face obliquely rearward of the bogie frame 10. Further, the lower bracket 17a is formed larger than the upper bracket 17a, and also serves as a reinforcing member for attaching the caster 14 (FIGS. 2 and 3). The rear support leg 20 is a cylindrical member 22 with bearing plates 22a, 22a for vertically inserting the mounting pins 17 into the base of a leg body 21 made of a square tube member.
Is attached.

The rear support leg 20 includes a spacer ring 22.
The base portion is inserted between the brackets 17a and 17a via the b and 22b, and the mounting pin 17 is attached to the brackets 17a and 17a.
It is horizontally swingably attached to the bogie frame 10 by being inserted through the a, the bearing plates 22a, 22a, and the cylindrical member 22 in common. The rear support leg 20
Is formed to be slightly shorter than the vertical frame 11 of the bogie frame 10, and by horizontally swinging around the mounting pin 17, a storage position (solid line in FIG. 4) parallel to the side surface of the bogie frame 10 and a bogie frame. An operating position (two-dot chain line in the figure) that opens at an obtuse angle from the storage position can be provided obliquely rearward of 10. However, the operating position of the rear support leg 20 is restricted by the stopper plate 17b,
The rear support leg 20 opened to the operating position is
It can be locked in the operating position via a lock pin 17c that is inserted into a and 17a (FIG. 2).

A mounting plate 23a is attached to the tip of the rear support leg 20.
A hook bracket 23 is provided in a protruding manner (FIGS. 2 and 3), and the lock pin 18 is provided on the front portion of the side surface of the bogie frame 10 so as to correspond to the hook bracket 23.
Brackets 18a, 18a into which are inserted are horizontally projected. Therefore, when the rear support leg 20 is in the storage position,
The hook bracket 23 is inserted between the brackets 18a, 18a, and the lock pin 18 is attached to the brackets 18a, 1a.
The rear support leg 20 can be locked at the storage position in the front portion of the side surface of the bogie frame 10 by inserting the rear support leg 20 in common with the hook bracket 23.

A disk-shaped ground plate 24 is provided at the tip of the rear support leg 20.

A screw shaft 24b is erected at the center of the upper surface of the ground plate 24 via a nut 24a, and the handle 24 which is inclined upward is provided on the outer periphery of the base of the nut 24a.
c and 24c are attached. On the other hand, the rear support leg 2
A box 25 is vertically provided at the front end portion of 0, and the lower end of the box 25 is closed by a bottom plate 25b having a nut 25a. Further, the screw shaft 24b is used for the nut 2
It is screwed to 5 a and protrudes into the box 25. Therefore, the ground plate 2 is handled via the handles 24c, 24c.
4. Rotate the screw shaft 24b left and right, the ground plate 2
4 can be moved up and down via the screw shaft 24b and the nut 25a. That is, the ground plate 24 is
It is adjustable up and down. At this time, the upper end of the screw shaft 24b can be pushed over the upper end of the box 25 and into the inside of the leg body 21 through the through hole 21a in the lower surface of the leg body 21 (two-dot chain line in FIG. 3). ).

The front support legs 30, 30 are mounted on the carriage frame 1
0 has swing centers at both front ends (FIGS. 1 and 2).

Each front support leg 30 is formed in the same manner as the rear support leg 20 except for its overall length, and has all the constituent members corresponding to the constituent members of the rear support leg 20. That is, the front support leg 30 has the cylindrical member 32 at the base of the leg body 31, the hook bracket 33 is provided to project from the tip, and the handle 34 is provided at the tip through the box 35.
A ground plate 34 with c and 34c is vertically adjustable. Further, the front support leg 30 is horizontally swingably attached via brackets 17 to brackets 17 a, 17 a projecting from one end of the horizontal frame 12 in front of the bogie frame 10.

Therefore, the front support legs 30, 30 are horizontally swung around the mounting pins 17, respectively, so that the front support legs 30, 30 are at an obtuse angle from the storage position (solid line in FIG. 4) parallel to the front surface of the bogie frame 10. The open operating position (two-dot chain line in the figure) can be taken. The operating position of each front support leg 30 is regulated by a stopper plate 17b attached between the brackets 17a, 17a, and the front support leg 30 in the operating position is provided with a lock pin 17c inserted into the brackets 17a, 17a. Can be locked.

At the center of the front surface of the bogie frame 10, brackets 18a, 18 for inserting the lock pins 18 are attached.
a is projected (FIG. 2). Front support legs 30, 30
When both of them are set to the storage position, the lock brackets 33, 33 are inserted between the brackets 18a, 18a so that the lock brackets 33, 33 are vertically overlapped with each other.
And can be connected and locked via. That is, the lock brackets 33, 33 are connected to the front support legs 3 respectively.
It is assumed that they are provided at different heights with respect to 0.

The lift column 40 is erected on the reinforcing members 13, 13 of the bogie frame 10 via front and rear mounting members 13a, 13a (FIGS. 1 and 2). The lift pillar 40 is
A lower member 41 and an upper member 42 made of a square tubular member are joined in a telescopic manner, and the upper member 42 is moved up and down through a small winding winch (not shown) fixed to the lower member 41 to freely expand and contract. be able to. Also, the lift pillar 4
0 can be locked to the length at the time of extension and the length at the time of shortening by inserting / removing the removable pin 41a in common to the lower member 41 and the upper member 42.

At the upper end of the lift column 40, the gantry frame 4
3, a lift device 45 is mounted via the base 44. The lift device 45 includes a swing base 45a, a boom 45c mounted on the swing base 45a via a bracket 45b, and a hook 45d attached to the tip of the boom 45c.
With the electric winch 45d with 1 as the main member,
The boom 45c can be manually swung via the swivel base 45a, and can be raised at an arbitrary elevation angle via the cylinder 45e. In addition to the power supply unit for the hoisting winch and the electric winch 45d that expands and contracts the lift column 40, a device (not shown) including a hydraulic unit for the cylinder 45e is mounted on the carriage frame 10, and further required. Accordingly, a power transformer (not shown) may be mounted together. However, the power transformer is convenient, for example, when driving a standard 200V electric device with a household 100V power source.

The simple lift having the above-mentioned structure is provided with the rear support leg 2
By storing 0, 20, and the front support legs 30, 30 in the storage position, it is possible to realize a compact overall size that substantially matches the size of the bogie frame 10 (FIG. 4).
Solid line). At this time, the ground plates 24, 24,
34, 34 are screw shafts 24b, 24b, 34b, 34b
It is supposed to be raised high through the line (two-dot chain line in FIG. 3). On the other hand, the rear support legs 20, 20, the front support legs 30,
When 30 is opened to the operating position (two-dot chain line in FIG. 4, FIG. 1), the bogie frame 10 can greatly expand its substantial ground contact area, and the lift column 40 can be extended to a high level to allow the electric winch 45d. Even if the load is suspended at the tip of the boom 45c via the whole, there is no risk of the whole body falling over. In addition,
After the rear support legs 20 and 20 and the front support legs 30 and 30 are opened to the operating positions, the respective ground plates 24 and 34 are lowered to stably ground the ground G (see FIG. 3). solid line).

[0029]

[Other Embodiments] The lift column 40 may be expanded and contracted by using an electric winch 45d at the tip of the boom 45c instead of the dedicated hoisting winch (FIGS. 5 and 6).

The front surface of the upper end of the lower member 41 of the lift column 40,
In front of the lift pillar 40 on the upper surface of the carriage frame 10,
Guide pulleys 46a and 46b are provided, and a pulley 46c is provided at the lower end of the upper member 42. However, the guide pulley 4
6b is a mounting member 46b installed between the reinforcing members 13 and 13.
It is disposed on the upper surface of 1 with brackets 46b2 and 46b2 facing upward. Further, a pin 46d for fixing one end of the wire 46 is provided on the rear surface of the upper end portion of the lower member 41, and the wire 46 is wound around the pulley 46c from the lower side inside the lower member 41, and the guide pulley 46a. , 46
It is pulled out on the bogie frame 10 via b.

The wire 45d2 of the electric winch 45d is extended, the hook 45d1 is hooked on the tip of the wire 46, and the wire 45d2 is wound by the electric winch 45d.
When the wire 46 is pulled out, the wire 46 is pulled by the pulley 46c.
The upper member 42 can be raised via the and the lift column 40 can be extended (two-dot chain line in FIG. 5). When the lift column 40 is sufficiently extended, pin holes 41b, 4
1b, the lift column 40 can be locked by inserting the pin 41a into the pin holes 42a, 42a at the lower end of the upper member 42. Therefore, the wire 45d2 of the electric winch 45d is loosened and the hook 45d1 is removed from the wire 46. After the removal, the lifting device 45 may be moved to a predetermined lifting operation. In addition, another pin hole 42b, 42b is formed at the upper end of the upper member 42 so as to correspond to the pin hole 41b, 41b when the lift column 40 is shortened.

In FIG. 5, a hook bracket 19 is provided on the horizontal frame 12 behind the bogie frame 10 so as to project therefrom. The hook bracket 19 can be used to pull the bogie frame 10 when the whole is horizontally moved, when the whole is pulled up and loaded on a truck bed or the like.

[0033]

As described above, according to the present invention, by providing each pair of horizontally swingable rear support legs and front support legs on the bogie frame, the bogie frame has a rear support leg and a front support leg. By opening the part support legs to the operating position, the tip of each support leg can be grounded, so even if the length of each support leg is not made extremely long, the actual ground contact area is necessary and sufficiently large. However, there is an excellent effect that sufficient stability can be easily achieved during use.

[Brief description of drawings]

1 is a perspective view of the overall configuration

FIG. 2 is an exploded perspective view of essential parts

FIG. 3 is an enlarged cross-sectional explanatory view of a main part

FIG. 4 is an operation plan view

FIG. 5 is an operation explanatory view showing another embodiment.

6 is an exploded perspective view of a main part of FIG.

[Explanation of symbols]

 10 ... Bogie frame 14 ... Caster 20 ... Rear support leg 24 ... Ground plate 30 ... Front support leg 34 ... Ground plate 40 ... Lift column

Claims (4)

[Claims] 1. A bogie frame having a rectangular shape extending in the front-rear direction, a lift column standing upright on a rear portion of an upper surface thereof, and casters for moving on a lower surface thereof, and a pair of rear portions having rocking centers at rear portions of both side surfaces of the truck frame. The support legs and a pair of front support legs having swing centers at both front end portions of the bogie frame, the rear support legs being opened at an obtuse angle from a storage position parallel to the side surface of the bogie frame. For horizontal movement up to a position, the front support leg can be horizontally swung from a storage position parallel to the front surface of the bogie frame to an operating position where it opens at an obtuse angle. Trolley device. 2. The trolley for moving a simple lift according to claim 1, wherein the front support legs can be connected to each other and locked at a central portion of the front surface of the trolley frame when the front support legs are in the storage position. apparatus. 3. The trolley device for moving a simple lift according to claim 1, wherein the rear support leg can be locked at a front portion of a side surface of the trolley frame when the rear support leg is in the storage position. . 4. The simplified lift according to claim 1, wherein each of the front support leg and the rear support leg is equipped with a ground plate which is adjustable up and down at each tip. Trolley device for moving.