JPH027100Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a platform for loading a load onto a base plate whose rear end is pivoted on the underframe of a trolley and moving it on the floor by hand. It is towed by a towing chain installed slightly below the floor level, and when not in use, the base plate is flipped up and tilted forward and upward, and the base plates are stacked on top of each other, allowing storage in tight spaces. This invention relates to a transport vehicle that can be used effectively in warehouses, factories, etc.

(Prior art) A transport vehicle that allows a large number of vehicles to be stored in a narrow space by fitting a part of one vehicle into the other vehicle when not in use is disclosed in, for example, Japanese Utility Model Publication No. 52-13714 and Japanese Utility Model Publication No. 13714. It is disclosed in Sho 53-38756, etc.

However, in the former case, in order to store the transport vehicle,
It is necessary to fold the base plate, and in the latter case, the base plate flips up forward and upward when stored, and when in use, it is secured to the base frame with a hook. The carrier had to be placed on its side to attach and detach, making both operations extremely troublesome.

Additionally, in both cases, in order to tow the transport vehicle with a chain, some sort of device was required to connect it to the chain.

(Purpose of the present invention) The present invention has been made for the purpose of solving the above-mentioned drawbacks.

(Structure of the present invention) In the present invention, running wheels are disposed on the lower surface of the trapezoidal underframe facing in the front-rear direction, and the running wheels are arranged in approximately the same shape as the underframe, and the rear frame is erected on the upper surface of the underframe. A trolley is placed on the underframe, and the rear end is pivotally connected to the underframe, and a guide tube facing in the vertical direction is fixed to the front end, and is engaged with the rear of the guide tube at the front of the lower surface. The base plate has a hole cut therein and is biased upward by a spring, and is fitted into the guide tube so as to be able to rise and fall freely, with the lower end recessed into the guide tube at an upper position, and the lower end positioned between the underframe and the floor. an operating rod that is movable between an intermediate position located between the surface and a lower end position and a lower end position that is located below the lower end of the wheel, and that can be held at each of the positions;
The center portion is pivotally attached below the engagement hole of the base plate at the front end of the underframe, and is provided with a hook piece at one end and a leg piece at the other end, and the operating rod is placed between the intermediate position and the lower position. In some cases, the leg piece is pressed against the operating rod and the hook piece engages with the engagement hole, and when the operating rod is in the above-mentioned upper position, it rotates due to its own weight or the bias of the spring, and the hook piece engages with the engagement hole. and a rotating metal fitting that is detached from the engagement hole.

(Effects of the present invention) The transport vehicle according to the present invention can move freely on the floor by hand by simply raising and lowering the operating rod provided at the front end, or can transport loads by being towed by a chain. However, when not in use, the base plate can be flipped up and the front of one truck fitted into the rear of the other truck, making it possible to store multiple vehicles in a narrow space. Large loads that cannot be stored inside the body can be loaded onto the base plate by removing the frame, making it very convenient to use in warehouses, factories, etc.

That is, the present invention has the advantage that the base plate can be engaged and detached from the underframe and the carrier itself can be engaged and detached from the traction chain at the same time by operating one operating lever.

(Example) Figures 1 to 3 show the state in which the transport vehicle according to the present invention is running on the floor 1, and the front part (right side in the drawing Part) Each leg tube 4 vertically installed on both the left and right sides, and each mounting tube 5 fixed to the left and right corners of the rear end and facing in the vertical direction, have a flexible wheel 6 and a fixed wheel 7 for hanging, respectively. A guide tube 8 facing in the vertical direction is also fixed to the center of the front surface.

At the front of each mounting tube 5 at the rear end of the upper surface of the underframe 3, pivot plates 9 that are parallel to each other are erected.

The lower ends of a rear frame 10, which has a downward U-shape and also serves as a handle, are removably fitted into both mounting tubes 5.
A pivot tube 11 is fixed to the upper and lower front surfaces of both side rods 10a.

Reference numeral 12 denotes a side frame, and a downward locking shaft 13 fixed to the side rod 12a is removably pivoted to the rear frame 10 by engaging with the pivot tube 11 from above.

A substantially rectangular base plate 14 is placed on the base frame 3, and pins 15 are provided laterally protruding from the rear of both sides of the base plate 14.
is pivotally fitted to the pivot plate 9, and the base plate 14 is biased in the upward swinging direction by a spring such as a torsion bar 16 provided between the rear part of the base plate 14 and the underframe 3.

The side frame 12 is held between a base plate 14 and a stopper 17 erected on the outer surface of the base frame 3, and faces forward.

Support tubes 18 are provided upright at both left and right corners of the front part of the base plate 14, and a guide tube 19 having the same diameter and coaxial structure as the guide tube 8 is installed at the center of the front surface. An engagement hole 20 is cut at the rear of the holder.

The lower end of each side frame 21a of the front frame 21 forming a downward U-shape is removably fitted into each support tube 18, and connecting rods 21b, 2
1b is installed horizontally.

At the center of each connecting rod 21b, a first locking piece 22 and a second locking piece 23 are provided to project forward from above, and a locking groove 24 is cut into the upper surface of both locking pieces 22, 23. has been done.

An operating rod 25 is fitted into the guide tube 19 so as to be able to move up and down.
A locking pin 26 projecting laterally from the upper end of the underframe 3 engages with the locking groove 24 of the second locking piece 23, and the lower end also passes through the guide tube 8 and connects the lower surface of the underframe 3 with the floor. Side 1
It is located in the middle (intermediate position).

The center of a rotating metal fitting 28 that is inclined almost rearward and upward is pivotally attached to the front end of the side surface of the reinforcing rod 27 facing in the front-rear direction of the underframe 3, and the lower leg piece 28a is attached to the front end of the side surface of the reinforcing rod 27 that faces in the front-rear direction of the underframe 3.
5, and the upper hook piece 28
b engages with the engagement hole 20 of the base plate 14, so that the base plate 14 is superimposed on the base frame 3.

As shown in FIG. 4, in order to tow the above-mentioned transport vehicle by laying a towing chain 30 in the groove 29 provided in the floor surface 1, the transport vehicle must be moved through the chain 30. The operating rod 25 is lowered upward toward the traveling direction, and the locking pin 26 is locked to the upper end of the guide tube 19.

Then, the lower end of the operating rod 25 engages with the chain 30 (downward position) and the carrier is towed.

When not in use, as shown in FIG. 5, the operating rod 25 is raised and the locking pin 26 is locked in the locking groove 24 of the first locking piece 22 located above.

Then, the lower end of the operating rod 25 is recessed into the guide tube 19 (in the upper position), so the rotating metal fitting 28 rotates clockwise in FIG. 5 due to its own weight, and the hook piece 28b
is detached from the engagement hole 20 of the base plate 14, and the base plate 14
is swung upward by the bias of the torsion bar 16 and tilted forward and upward.

Since the underframe 3 of such a plurality of transport vehicles has a trapezoidal shape and the wheels 6 and 7 are arranged in a trapezoidal shape, the underframe 3 of the multiple transport vehicles has a trapezoidal shape, as shown in FIG. By overlapping the plates 14 and fitting the underframe 3 of the rear transport vehicle into the underframe 3 of the front transport vehicle, a large number of transport vehicles can be stored in a narrow space.

In the above description, the locking pin 26 at the upper end of the locking means of the operating rod 25 is locked to both the locking pieces 22 and 23 of the front frame 21; Through-holes may be formed at locations corresponding to the stopper pieces 22 and 23, and both ends of a removable pin loosely inserted into the through-holes may be locked to the upper end of the guide tube 19.

In addition, the side rod 21 on the same side of both the front and rear frames 21, 10
A removable band is provided between a and 10a,
It is also possible to close off the front side of the vehicle.

Furthermore, the surrounding frames 10, 12, 21 can be removed to load large loads.

[Brief explanation of the drawing]

Figure 1 is a side view of the transport vehicle of the present invention when it runs on the floor, Figure 2 is an enlarged partially cutaway plan view with the side plate removed, and Figure 3 is a partially cutaway view of the main part of Figure 1. Enlarged view, Figure 4 is a partially cutaway enlarged side view of the main parts of the conveyance vehicle of the present invention being towed with a chain;
FIG. 5 is a diagram corresponding to FIG. 4 when stored,
FIG. 6 is a side view of a plurality of transport vehicles stacked one on top of the other. 1...floor surface, 2...bogie frame, 3...underframe, 4...
...Leg tube, 5...Mounting tube, 6...Swivel wheel, 7...
Fixed wheel, 8... Guide tube, 9... Pivot plate, 10...
...Rear frame, 10a...Side rod, 11...Pivot tube, 12
...Side frame, 12a...Side rod, 13...Lock shaft, 1
4... Base plate, 15... Pin, 16... Torsion bar, 17... Stopper, 18... Support tube, 19...
...Guide tube, 20...Engagement hole, 21...Front frame, 21
a...Side rod, 21b...Connecting rod, 22...First locking piece, 23...Second locking piece, 24...Latching groove, 2
5... Operating rod, 26... Locking pin, 27... Reinforcement rod, 28... Rotating metal fitting, 28a... Leg piece, 28b
... hook piece, 29 ... groove, 30 ... traction chain.

Claims (1)

[Claim for Utility Model Registration] Traveling wheels are arranged on the lower surface of a trapezoidal underframe facing in the front-rear direction in a shape that is almost the same as the underframe, and a rear frame is erected at the rear of the upper surface of the underframe. A dolly is placed on an underframe, the rear end is pivotally connected to the underframe, and a guide tube facing in the vertical direction is fixed to the front end, and an engagement hole is cut in the rear of the guide tube at the front of the lower surface. A base plate is installed and urged upward by a spring, and is fitted into the guide tube so as to be able to move up and down, with the lower end recessed into the guide tube, and the lower end between the underframe and the floor. an operating rod that is movable between an intermediate position located in between and a lower position where the lower end is located below the lower end of the wheel, and that can be held in each of the positions;
The center portion is pivotally attached below the engagement hole of the base plate at the front end of the underframe, and is provided with a hook piece at one end and a leg piece at the other end, and the operating rod is placed between the intermediate position and the lower position. In some cases, the leg piece is pressed against the operating rod and the hook piece engages with the engagement hole, and when the operating rod is in the above-mentioned upper position, it rotates due to its own weight or the bias of the spring, and the hook piece engages with the engagement hole. A towable transport vehicle, comprising: a rotating metal fitting that is detachable from an engagement hole.