JPH0449024Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a container-equipped transport trolley that is towed by a drive vehicle on a single rail installed at the top of the support.
This invention relates to a rollover device for unloading loads when transporting ready-mixed concrete, rock, earth and sand, etc. used in civil engineering work on mountains and the like.

(Prior art) Our company has conventionally developed a rollover device for unloading a container-equipped transport truck by rotating the rollover shaft 10 at the front and rear of the container 8, as shown in Fig. 1. It is installed on the trolley frame 4 while being fixed with a bearing, and a rollover bar 12 for manually rolling the container 8 is fixed to the rear side of the container 8, and a concrete weight is attached to the inner bottom of the container 8. It was designed so that it would sit up naturally.

(Problem to be solved by the invention) In the conventional container 8, the front and rear rollover shafts 10 are directly supported by bearings, and it is also heavy, so a considerable amount of force is required to roll it over manually when unloading the container. If the load is particularly low in fluidity, the strongest force is required from the moment it is dropped from the container 8 until it starts, so the rollover bar 12 must be operated with both hands. Single rails are usually installed on mountain slopes or in places with poor footing, so manual operation using excessive force can cause the load to slip or fail to unload. There was a risk of injury.

In addition, since the container 8 rotates at the bearing position directly above the single track 2, the container 8 hits the side corner of the trolley frame 4 before completely falling over, so soil, fresh concrete, etc. Moreover, the falling position of the loaded material is too close to the bottom of the cart, making it difficult to transfer it to a unicycle, etc., or the drop is too high, causing the fresh concrete to bounce off the guide rollers 5 and 6 or the single track. 2, which sometimes caused problems with driving.

Further, since the container 8 is naturally restored by the weight of the load below the rollover axis 10 and the load of the loaded object, there is also a drawback that the container 8 tends to sway from side to side while being towed and transported by a driving vehicle.

Therefore, the present invention aims to improve safety by making it easier to manually overturn containers, to make it possible to overturn containers sufficiently deep, to be able to unload cargo as far away from the bottom of the trolley as possible, and to reduce the head difference, and to make it possible to overturn containers by hand. The purpose of this is to eliminate the shaking of the container.

(Means for Solving the Problems) In order to achieve the above object, the present invention fixes a protruding ring 9 to a rolling shaft 10 at the front and rear of a container 8, and holds this protruding ring 9 rollably within a frame. The guide frame 7 is fixed to the front and rear of the cart frame 4, and a rollover bar 12 with a rollover prevention lever 13 having a locking bar 17 is fixed to the rear side of the container 8.
The upper surface of the locking rod 17 is arched and raised in the center, and a through hole 20 is provided at the top of the upper surface, into which the tip of the locking rod 17 is inserted.

(Function) In this device, the container 8 is prevented from overturning when the tip of the locking rod 17 of the overturn prevention lever 13 located at the top of the overturning rod 12 is inserted into the through hole 20 on the upper surface of the guide frame 7. Also, when the rollover prevention lever 13 is operated and the tip of the locking rod 17 is pulled out, the rollover prevention is released.

When the overturning bar 12 is tilted in this state, the front and rear protruding rings 9 roll within the guide frame 7, and the container 8 rolls over while moving in the direction in which the overturning bar 12 is tilted.

Note that details will be described later.

(Example) An example of the present invention will be described based on FIGS. 2 to 4.

The single rail 2 is fixed to the upper part of a support 1 driven into the ground with a support metal fitting 3. The transport trolley is provided with two guide rollers 5, 5 and 6, 6 at the front and rear of the lower part of the trolley frame 4, respectively, to hold the single rail 2 therebetween.

A guide frame 7 is fixed to the roll shaft 10 at the front and rear of the container 8 at the front and rear positions of the upper part of the truck frame 4 by fixing a projection ring 9 having flanges 9a and 9b on both sides.
An upward rollover bar 12 is fixed to the rear side of the container 8, and a rollover prevention lever 13 is attached to the upper part with a metal fitting. This rollover prevention lever 13
There is a spring 16 on the shaft that returns the lever to its original state.
is installed internally, and holds a downward locking rod 17 at a position away from the axis, and the lower end side of this locking rod 17 is fixed to the lower end of the rollover rod 12 with a support plate 19 having a guide hole 18, which allows the vertical rotation. It is held movably.

The guide frame 7 has a width such that the ribs 9a and 9b of the projecting ring 9 hang on the side surface, and is made up of a hollow lower support member 7a and an upper holding frame 7b that is open at the bottom. Holds wheel 9.

A plurality of holes 11 are formed in a row on the upper surface of the lower support body 7a, into which protrusions 15 are fitted so that the protrusion ring 9 rolls within the frame when the container 8 is rolled over.
Also, the upper holding frame 7 of the guide frame 7 on the rear side of the container 8
b The upper surface is formed high at the center, and a through hole 20 into which the tip of the locking rod 17 is inserted is formed at the center of the top.

Note that the transport cart is towed by connecting a drive vehicle (not shown) to a connecting portion 14 at the front of the cart frame 4.

Since the transportation cart of the present invention has the above-described structure, the method of use thereof and the function of each main part will be explained in detail.

When loading and driving, roll over prevention lever 1
Due to the restoring force of the spring 16 housed in the spring 3 and the weight of the locking rod 17, the tip of the locking rod 17 is pushed into the guide frame 7.
The container 8 is inserted into the through hole 20 in the upper holding frame 7b to prevent the container 8 from overturning.

When unloading the load, first grasp and hold the rollover prevention lever 13 together with the rollover bar 12, and the locking bar 17 will be pulled upward and its tip will come out of the through hole 20 of the upper holding frame 7b to prevent rollover. is canceled.

Next, in that state, if you tilt the rollover bar 12 toward you,
The protrusion ring 9 of the container 8 has a protrusion 15 attached to the lower support member 7a.
At the same time, the flanges 9a, 9 on both sides of the protruding ring 9
b acts, the container 8 is accurately guided along the surface of the lower support 7a, and the container 8 is unloaded in a state where it is overturned more deeply than before while moving laterally.

In addition, the ribs 9a and 9b of the protruding ring 9 prevent the container 8 carrying the load from shifting in the front-back direction with respect to the trolley frame 4 when traveling on the single rail 2 installed on vertically undulating mountains and valleys. Guide frame 7 shows the strong force that
catch it on both sides to prevent the protruding ring 9 from falling off,
This prevents deformation and damage due to contact between the protrusion 15 of the protrusion ring 9 and the hole 11 of the lower support body 7a, and furthermore, the lower end of the upper holding frame 7b of the guide frame 7 prevents the protrusion ring 9 from rising due to slopes or vibrations. Reliably prevent it from falling off.

(Effects of the invention) The effects of the present invention when compared with the conventional one are as follows: (a) The container 8 has no weight on the inner bottom, and the protruding ring 9
Since the container 8 is rolled over while rolling sideways, the force is reduced and the container 8 can be rolled over with one hand during unloading.

(b) Since the container 8 rolls over while moving laterally, it can be lowered deeper than before, and the ready-mixed concrete etc. can be completely unloaded.

(c) In addition, since the cargo can be unloaded at a location farther from the trolley or support than in the past, reloading becomes easier, and by tilting the container 8 deeper, the drop during unloading is reduced, resulting in It is possible to reduce splashing of concrete, etc.

(d) By the locking rod 17 of the rollover prevention lever 13,
The container 8 does not shake during loading or traveling, and the stability of the transport vehicle is improved.

(e) By providing the flanges 9a and 9b on the protruding ring 9, rolling within the guide frame 7 is performed accurately and smoothly in any case, and displacement in the front and rear direction due to the slope is prevented. This can prevent the protrusion ring 9 from falling off and deformation and damage to the main parts.

Furthermore, the characteristic effects of the main part of the present invention are as follows: (f) By providing the upper holding frame 7b of the guide frame 7, it is possible to completely prevent the projecting ring 9 from coming off due to lifting, and also to Falling soil and ready-mixed concrete can fall into the protrusions 15 and holes 11 of the protrusion ring 9.
It can prevent it from adhering to the surrounding area.

(g) Even if fresh concrete or the like should adhere to or harden on the upper surface of the lower support 7a of the guide frame 7, it is easy to remove because it is flat and has no unevenness like a rack.

As described above, the present invention is a highly practical unloading and overturning device that enables containers to be manually overturned effectively and effectively on a limited trolley space for single-track running. .

[Brief explanation of the drawing]

Figure 1 is a front view showing a conventional unloading and rolling device;
Fig. 2 is a partially cutaway front view showing the unloading/overturning device of the present invention, Fig. 3 is a perspective view showing the unloading/overturning device of the present invention, and Fig. 4 is the unloading/overturning device of the present invention. FIG. 2 is a partially cutaway rear view of the device. 1... Support column, 2... Single rail, 3... Support metal fittings,
4...Dolly frame, 5...Guide roller, 6
... Guide roller, 7 ... Guide frame, 7a ... Lower support, 7b ... Upper presser frame, 8 ... Container, 9
... protruding ring, 9a... brim, 9b... brim, 10
... Rolling wheel, 11... Hole, 12... Rolling rod, 13
...Overturn prevention lever, 14...Connection part, 15...
Projection, 16... Spring, 17... Locking bar, 18...
Guide hole, 19... support plate, 20... through hole.

Claims (1)

[Scope of utility model registration request] A bogie frame 4 in which a single track 2 installed on the top of a support column 1 is held between upper and lower guide rollers 5 and 6.
In this transport cart consisting of a container 8 attached to a cart frame 4, a protruding ring 9 having flanges 9a and 9b on both sides is fixed to the rolling shaft 10 of the container 8, and A rollover bar 12 with a rollover prevention lever 13 having a locking bar 17 held movably up and down by a support plate 19 at the bottom is fixed to the side, and a protruding ring of the container 8 is attached to the front and rear of the truck frame 4. 9 is held in a rectangular frame so that the ribs 9a and 9b hang on the sides, and a hollow lower support 7a
A guide frame 7 consisting of an upper holding frame 7b with an open bottom is fixed, and a hole is provided on the upper surface of the lower support 7a into which a protrusion 15 is fitted so that the protrusion ring 9 rolls when the container 8 rolls over. 11, and the upper surface of the upper holding frame 7b on the rear side of the container 8 is arched in the center and has the locking rod 17 at the top.
1. A device for unloading and overturning a container-equipped transport truck, characterized in that a through hole 20 is formed into which the tip of the container is inserted.