JPS6232134Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention includes a cargo loading table that is attached to a mast that is erected on a movable chassis so that it can be raised and lowered, a hydraulic cylinder that raises and lowers the table, a plunger pump that drives the cylinder, and a Regarding a transport vehicle with an elevator equipped with a pumping handle for operating this pump, a ladder having a lower horizontal rung in an L shape is provided on the mast so as to be freely accessible and removable;
The pumping handle is extended to the side of the lower end of the ladder, and when the table is raised to the highest position of the mast, loading and unloading work at high places can be carried out by one person using the ladder. The ladder can be easily assembled into a transport vehicle by locking the ladder to the mast so that it can be moved in and out, and the worker can ascend and descend from high places without having to carry the ladder alone. When loading and unloading work at a site, the ladder can be used as a brace to reinforce the mast by leaning the ladder diagonally against the mast, allowing work at heights to be carried out in a stable and safe manner. A stepping space for the handle can be formed below the ladder on which the pumping handle is extended, and the pumping operation of the handle, that is, the lifting operation of the table can be prevented from being obstructed by the ladder. An object of the present invention is to provide a transport vehicle with a lift, which can be stored compactly with the ladder and handle wrapped together, and which allows the ladder to be appropriately incorporated into the transport vehicle without impairing the functions of the transport vehicle. .

An embodiment of the present invention will be described in detail below with reference to the drawings. Figure 1 is a side view of the whole, Figure 2 is a rear view of the same,
FIG. 3 is a sectional side view, and FIG. 4 is a perspective view showing the configuration of the main parts. The front bogies 2, 2 are supported on the front ends of both legs of the chassis 1, which is U-shaped in plan, and both sides of the rear end of the chassis 1 are supported. A rear bogie 4, 4, which can freely change direction, is supported via brackets 3, 3. tubular inverted U
The lower ends of both legs of the shaped mast 5 are fixed to the brackets 3, 3, reinforcing pipes 6, 6 are connected between the brackets 3, 3 and the middle part of the mast 5, and a hand push part 7 is connected between the pipes 6, 6. Upper and lower guide wheels 8, 8 and guide pins 9, 9 are provided on the lift plate 1 and are brought into sliding contact with the vertical portion of the mast 5.
0, and a lift plate 10 is attached along the mast 5 so as to be movable up and down. Both rear ends of the cargo loading table 11, whose front end side is slightly inclined upwards, are fixedly supported by the lift plates 10, 10, and a pair of parallel rail members 12, 12 are installed back and forth on the back surface of the table 11. , a storage box 1 which reinforces the table 11 with its rail members 12, 12 and stores working implements such as tools;
3 is attached to the lower surface of the table 11 via rail members 12, 12 so as to be freely accessible.

In addition, an auxiliary plate 14 is provided at the center of the rear end of the chassis 1.
An oil passage forming base 15 is fixedly installed through the base 15, and an oil tank 16 and a hydraulic cylinder 17 provided on the same axis are installed upright on the base 15, and a plunger pump 18 that supplies pressure oil to the cylinder 17 and the pressure of the cylinder 17 A pressure relief valve 19 for removing oil is provided on the base 15. A lever rod 20 for driving the pump 18 is supported on the oil tank 16 via a bracket 21, and a support shaft 22 and a meshing joint 2 are attached to the lever rod 20.
Connect the pumping handle 23 via 2a,
By rotating only the handle 23 about the support shaft 22 and hanging it vertically, the handle 23 can be stored approximately vertically, and the meshing joint 2 can be attached to the lever rod 20.
Handle 2 in a horizontal position engaged and fixed via 2a
3 is pressed down by a foot operation, the lever member 20 and the handle 23 are swung together, and the plunger pump 18 can be driven. Further, a pressure relief lever 24 connected to the pressure relief valve 19 is supported by the oil tank 16 via a bracket 25.

Next, the piston rod 2 of the cylinder 17
6. A bearing plate 27 is fixed to the upper end of the bearing plate 27, and a sprocket 28 is supported on the plate 27.
Covers 29 and 30 are provided to cover the upper side of 8, one cover 29 is fixed to the bearing plate 27, and the cover 2
9 supports the other cover 30 via a hinge 31 so as to be openable and closable. Also, a connecting frame 32 installed between the pipe 6 and the oil tank 16, and a connecting plate 33 fixed to the center of the rear end of the table 11.
Both ends of the elevating chain 35 are connected via bolts 34, 34 between them.

Then, the guide rails 36, 36 are removably fixed to the reinforcing pipes 6, 6 between the intermediate part of the mast 5 and the hand push part 7 via the fastening fittings 37, and the rail grooves 39 forming the notches 38 in the upper part are fixed as described above. A ladder 41 is provided with a guide arm 40 that is provided on the guide rails 36, 36 and horizontally suspended in the groove 39 thereof so as to be vertically slidable.
The ladder 41 is fixed between the upper ends of the left and right main frames 42, 42, and the guide arm 40 is locked to the notch 38 at the upper end of the guide rails 36, 36, and the ladder 41 is suspended approximately vertically along the reinforcing pipes 6, 6. While storing, the guide arm 40 is lowered along the rail groove 39 and the ladder 41 is attached to the reinforcing pipe 6.
It is constructed so that it is pulled out to the rear and a ladder 41 is placed against the pipe 6.

In addition, the left and right main frames 42 of the ladder 41
Anti-slip grips 43, 43 are fitted into the lower ends of each of the main frames 42, 42.
A plurality of horizontal bars 44 are fixed therebetween, and a lower end horizontal bar 44a provided at the bottom of one of the main frames 42 is formed into an L shape so that it does not come into contact with the horizontal bars 44 when the pumping handle 23 is depressed. The L-shaped upper end of the lower end horizontal bar 44a is connected to the upper horizontal bar 44, and a stepping space for the pumping handle 23 is formed on one side of the lower end horizontal bar 44a.

The present invention is constructed as described above, and when the table 11 is being raised as shown in the figure, the pressure oil in the hydraulic cylinder 17 is returned to the oil tank 16 by operating the pressure release lever 24, and the piston rod 26 is The table 11 is lowered to a desired height. On the other hand, the pumping handle 23 protruding approximately horizontally rearward is pressed down by a foot operation, and the lever member 20
Then, the handle 23 is swung together to drive the plunger pump 18, apply pressure oil to the cylinder 17, project the piston rod 26, and raise the table 11 to a desired height. Further, when the table 11 is at the substantially highest position, the ladder 41 is pulled out to the rear of the reinforcing pipe 6 and intersects diagonally, and the worker climbs on the ladder 41 to load and unload cargo from high places.
Further, the handle 23 is erected and stored between the reinforcing pipes 6, 6, and then the guide arm 40
along the rail groove 39 and hook it onto the notch 38,
A ladder 41 is suspended and stored substantially vertically along the reinforcing pipes 6, 6, and is pushed and pulled by grasping the hand push part 7.

As shown in the above embodiments, the present invention includes a table 11 for loading cargo that is movably attached to a mast 5 that is erected on a movable chassis 1, and a hydraulic cylinder 17 that raises and lowers the table 11; In a structure including a plunger pump 18 to be driven and a pumping handle 23 for operating this pump 18, a ladder 41 having an L-shaped lower end horizontal bar 44a is provided on the mast 5 so as to be able to move in and out, and the pumping handle 23 is connected to the ladder. 4
1, the table 11 is raised to the highest position of the mast 5, and loading and unloading work at high places can be carried out by one person using a ladder. By locking the ladder 41 to the mast 5 so that it can be moved in and out, it can be easily incorporated into a transport vehicle, and the worker can climb to a high place without having to carry the ladder 41 alone. When loading and unloading at high places,
The ladder 41 serves as a brace for reinforcing the mast 5 by leaning the ladder 41 obliquely on the mast 5.
can be used to perform high-place work stably and safely, and a space for the handle 23 to be stepped can be formed below the ladder 41 on which the pumping handle 23 is extended by the L-shaped lower end horizontal beam 44a. While it is possible to prevent the ladder 41 from interfering with the movement, that is, the operation of raising the table 11, the ladder 41 and the handle 23 can be stored compactly in a wrapped state due to the step-in space, which impairs the function of the transport vehicle. This has practical effects such as being able to properly incorporate the ladder 41 into the transport vehicle without any problems.

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing an embodiment of the present invention, Fig. 2 is a rear view thereof, Fig. 3 is an enlarged sectional side view of Fig. 1, and Fig. 4 is a perspective view showing the state in which the ladder 41 is installed. It is a diagram. 2, 4...Truck, 5...Inverted U-shaped mast, 6...
Reinforcement pipe, 11... Luggage loading table, 17
...Hydraulic cylinder, 41...Ladder.

Claims (1)

[Scope of utility model registration request] A cargo loading table 11 is attached to a mast 5 erected on a movable chassis 1 so as to be able to rise and fall freely, and a hydraulic cylinder 17 that moves the table 11 up and down, a plunger pump 18 that drives the cylinder 17, and this pump 18 are installed. In the structure including a pumping handle 23 to be operated, a ladder 41 having an L-shaped lower end horizontal bar 44a is provided on the mast 5 so as to be freely removable, and the pumping handle 23 extends to the side of the lower end horizontal bar 44a of the ladder 41. A transport vehicle with an elevator.