JPH0710263Y2 - Trolley with weighing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a trolley provided with a weighing device for measuring the weight of a load. In particular, the present invention relates to a trolley provided with a weighing device for measuring the weight of a container containing molten metal or the like and subtracting the weight of an empty container to know the weight of the molten metal or the like in the container.

(Prior art) If the weight of the load of a trolley can be measured quickly without using a lifting machine such as a crane during the transportation, a great effect can be expected on the rationalization of work. For this reason, various ideas have been implemented so far, for example, in order to measure the weight of the molten metal contained in the container, but there are the following problems and there is no definitive measure.

As an example of the prior art relating to a truck equipped with a weighing device, there is a system illustrated in FIG. Figure 3 (A)
(B) shows the method described in Japanese Utility Model Laid-Open No. 62-30121. In this system, the hem of the load receiving / cover 24 surrounding the load cell 11 is fixed to the leaf spring 27 welded and fixed to the load cell receiving base 26 by bolts 28 via the packing 25 and hermetically sealed by the weighing device 4 on the trolley 3. The container 1 is mounted on the pedestal 23 at the supporting position and weighed.

This method provides a simple weighing device that does not require modification of the existing container side, but to restrain the displacement of the load receiver and cover so as not to adversely affect the weighing accuracy, load transfer Since a weak leaf spring that does not serve as a medium is used, the load cell is likely to be damaged when a lateral external force acts on the load receiver / cover, and it is equipped with adjustable means to restrain displacement such as tilting of multiple load receiver / covers. However, there is a problem that the measured value is likely to have an error.

As another example of the prior art relating to a trolley provided with a weighing device, there is a system illustrated in FIG. FIG. 4 (A) shows an embodiment of a truck equipped with a weighing device according to the prior art, and FIG. 4 (B) shows a plan view thereof. In this conventional technique, as shown in FIG. 4 (B), the container 1 is hung in the space 15 provided in the frame 10, and the receiving seat 2 provided around the container is placed on the frame.

Weighing beam 8 on which a container as a component of the frame is loaded
Are integrally connected to each other by a connecting beam 9 and are formed as a frame surrounding the container.

When replacing an existing trolley without a weighing device shown in FIG. 1 with a trolley with a weighing device, the trolley is installed in a container corresponding to the connection device 7 installed on the existing trolley. In the new truck shown in FIG. 4, the existing pipe joint 6 is behind the joint beam of the frame formed so as to surround the container, and cannot be used as it is. For this reason, when changing to a dolly equipped with a weighing device, the position of the joint on the container side had to be changed.

However, since the use of a large number of containers must be temporarily stopped to change the position of the joint, there is a problem that the operation is greatly affected and a large remodeling cost is required.

(Problem to be Solved by the Invention) An object of the present invention is to provide a trolley provided with a weighing device which does not require modification of an existing container such as a pot and which can obtain high weighing accuracy.

(Means for Solving the Problem) A trolley provided with a weighing device for measuring the weight of a load, and two weighing beams 8 facing a frame 10 on which the receiving seat 2 of the container 1 is placed. And one end of the weighing beam 8 with a connecting beam 9
The load cells 11 are formed in a U-shape so as to surround the load only in three directions by connecting the load cells 11 to each other in the relief 19 formed between the weighing beam 8 and the carriage 3.
Is provided, the weighing beam 8 is supported and weighed on the trolley 3 by the load cell 11, and the frame 10 and the trolley 3 for preventing the weighing beam 8 and the load cell 11 from being separated from each other.
The object is achieved by a trolley equipped with a weighing device, which is characterized in that a holding device (14) for connecting is connected.

(Operation) In the cart provided with the weighing device according to the present invention, the load cell is arranged at a position on the cart where the container is loaded. The measured value of each load cell is transmitted as an electric signal to a panel installed at another place, processed, and summed to obtain a container weight.

In the U-shaped frame, the weighing beam on which the container is loaded is connected and integrated at one end by a joint beam,
It is prevented from tilting due to its own weight and falling when loading a load.

The frame supports the weighing beam part at the relief part provided on the trolley frame by the load cell, and is firmly fastened to the trolley frame by the holding device, and the horizontal and horizontal displacements are maintained while maintaining the downward freedom. Strictly restrained.

When the frame cannot be stably supported by the load cell, the frame assists the joint beam part because the frame is formed in a U shape and only one side is connected and integrated by the joint beam. Supported by a conventional weighing means or a cylindrical seat.

The connecting beam, which is a structural member that connects and integrates the weighing beams, which are individually arranged with the container separated from each other, is arranged at only one end of the weighing beam. The joint can be used without changing its position.

(Embodiment) FIG. 1 (A) is a side view of an embodiment of the present invention, and FIG. 1 (B).
Shows a plan view. In FIG. 1 (A), a trolley frame 5 forming a space 15 for suspending a container 1 as a load has an L-shaped cross section near the position of the receiving seat 2 of the container 1, and a relief 19 is provided. Has been.

Then, the load cell 11 and the holding device 14 are provided in the escape portion.
Etc. are incorporated to support the weighing beam 8 portion of the frame 10 on which the container seat 2 is loaded.

As shown in FIG. 1 (B), the frame 10 has two weighing beams 8
And one joint beam 9 are formed in a U-shape, and the weighing beam 8 part is held by the holding device 14 at the lower side so that the weighing beam 8 and the load cell 11 are not separated from each other. ing. The movement of the frame in the horizontal plane is restricted by the restricting means 18 such as tie rods at the three outer edges of the frame and the tip of the weighing beam 8.

FIG. 2 shows a perspective view of the weighing device portion of the trolley shown in FIG.

The joint beam 9 portion of the frame is supported by the auxiliary load cell 17 on the lower side. The upper protective cover 20 is attached to the weighing beam 8 part, and the lower protective cover 21 is attached to the trolley frame 5 so as to overlap with each other, and protects the weighing device portion from radiant heat and dust intrusion.

The duct 22 forms a passage for cooling air for maintaining the ambient temperature of the load cell 11 under proper conditions, and is connected to a cooling air supply source (not shown).

The holding frame 16 is formed integrally with the weighing beam 8 and is provided to avoid interference between restraint means such as a tie rod for holding the attitude of the weighing beam 8 and a crane hook (not shown) for lifting the container. However, if no interference occurs, it is naturally omitted and the restraint means 18 such as a tie rod can be directly attached to the weighing beam.

The cylindrical seat 13 is provided so that the receiving seat 2 is loaded on the weighing beam 8 and is brought into contact with the weighing beam 8 at a position preferable for maintaining measurement accuracy of the load cell 11.

(Effect of the device) Since the joint beam that connects and integrates the weighing beams with each other is installed on one side, the position of the weighing beam can be kept constant when the container is loaded, so high measurement accuracy can be maintained. Further, the joint 6 of the container side pipe shown in FIG. 1 can be used without changing its position, and no modification is required. As a result, no modification is required on the container side, and only the dolly can be modified. It became possible to introduce a trolley equipped with a precision weighing machine in a short construction period.

[Brief description of drawings]

FIG. 1 (A) is a side view of an embodiment of the present invention, and FIG. 1 (B).
Is a plan view of the same as above, FIG. 2 is a perspective view of the weighing device portion of the trolley shown in FIG. 1, FIG. 3 (A) is a side view showing an embodiment of the trolley provided with the weighing device according to the conventional method, FIG. 3 (B) is a sectional view of the weighing device of the above, FIG. 4 (A) is a side view showing an embodiment of a trolley equipped with the weighing device according to the conventional method, and FIG. 4 (B) is a plan view of the same. is there. 1 is a container, 2 is a seat, 3 is a dolly, 4 is a weighing device, 5 is a dolly frame, 6 is a joint, 7 is a connecting device, 8 is a weighing beam, 9 is a connecting beam, 10 is a frame, 11 is a load cell , 12
Is a supporting means, 13 is a cylindrical seat, 14 is a holding device, 15 is a space, 16
Is a holding frame, 17 is an auxiliary load cell, 18 is a restraint,
19 escapes, 20 upper protective cover, 21 lower protective cover, 22
Is a duct, 23 is a mount, 24 is a load receiving / cover, 25 is packing, 26 is a load cell mount, 27 is a leaf spring, and 28 is a bolt.

Claims (1)

[Scope of utility model registration request] 1. A trolley provided with a weighing device for measuring the weight of a load, wherein two weighing beams facing each other with a frame plate on which a container seat is placed and one end of the weighing beam are joined together. By connecting by a beam, it is formed in a U-shape so as to surround only three directions of the load, a plurality of load cells are provided in the escape formed between the weighing beam and the trolley,
A weighing device, which supports and weighs the weighing beam on the trolley by the load cell, and is provided with a holding device that connects the frame and the trolley to prevent separation of the weighing beam and the load cell. With trolley.