JP2016217830A - Separation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separation device capable of reducing cost and weight and excellent in transportability and handleability.SOLUTION: A device includes: a single or a plurality of tension members 20 formed of a thermal melting material which may be cut by heat; an electrical heater 30 integrally added to a part of the tension member 20; and power supply unit 40 supplying power to the electrical heater 30. The electrical heater 30 is added in a transverse direction of the tension member 20.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a separation device used for a collision test of various heavy objects such as falling rocks and falling sand.

In various impact tests performed by dropping a heavy weight, it is known to use a separating device to separate the weight (Patent Documents 1 and 2).
This separation device includes an openable and closable arm and a drive device for operating the opening and closing of the arm.
The drive device includes a Linder that opens and closes the arm with fluid pressure, and is connected to a fluid control unit with a drive source arranged on the ground by a hose.
There is also known a separation device that separates a fallen object using an electric signal (Patent Document 3).

Japanese Utility Model Publication No. 5-2051 JP 2003-215006 A (FIGS. 1 and 2) Japanese Patent Laid-Open No. 6-24400 (FIG. 1)

The conventional separation device has the following problems.
<1> The arm and the separation device main body are made of a metal material so as to be able to withstand the weight of the weight, and a mechanical opening / closing mechanism for opening / closing the arm is incorporated.
For this reason, not only the cost of the main body of the separation device is high, but also the weight is heavy and inconvenient to transport and handle.
<2> The equipment cost is high because auxiliary equipment such as a large generator or fluid control unit is required on the ground side to open and close the arm.
<3> When the test place is a mountainous area where the working environment is poor, it takes a lot of labor and time to carry in and out the main body of the separation device and incidental equipment.
<4> A test may be performed by dropping falling objects at a plurality of points simultaneously. In such a case, due to factors such as play of the mechanical opening / closing mechanism and backlash, it is difficult to accurately synchronize the separation timing of all the separation devices, and a time difference is likely to occur.
The separation time difference not only affects the accuracy of the test results, but also forces the test to be repeated until all separation timings are synchronized.

The present invention has been made in view of the above points, and an object thereof is to provide at least one of the following separation devices.
<1> Excellent transportability and handling while reducing cost and weight.
<2> Simplify incidental facilities.
<3> Capability to accurately synchronize the timing of separation when performing separation at a plurality of points.

The present invention is a separation device arranged between members on which a tensile force acts, and is arranged between members on which a tensile force acts, and is made of one or a plurality of tensile members formed of a heat-meltable material capable of being heated and cut. And an electric heater integrally attached to a part of the tensile material, and a power supply unit for supplying power to the electric heater.
In another embodiment of the present invention, the electric heater is attached along the transverse direction of the tensile material.
In another embodiment of the present invention, the tensile material has a loop shape.
In another embodiment of the present invention, the power supply unit includes wiring connected to both ends of the electric heater, a power supply for supplying electric power to the electric heater via the wiring, and a power switch.

The present invention can obtain the following effects.
<1> The cutting device according to the present invention is not a mechanism that mechanically opens and closes an arm, but is based on heat cutting using a tension member partially provided with an electric heater.
Therefore, it is possible to reduce the cost and weight as compared with a conventional metal-made cutting device, and the portability to the site and the handling at the site are greatly improved.
<2> Since the auxiliary equipment installed on the ground side is only the power supply unit, a large fluid control unit is not required, and the cost and weight of the auxiliary equipment can be reduced.
Therefore, it is possible to easily carry in and out even when the test site is a mountainous area or a site where it is difficult to enter a vehicle.
<3> When cutting at multiple points, there are no factors such as play or backlash of the mechanical opening and closing mechanism, so it is only necessary to energize multiple electric heaters at the same time according to the timing of disconnection. It can be cut at the same time and can be cut without time difference.
Therefore, the accuracy of the test result is improved as compared with the conventional case.

Overall perspective view of a cutting device according to the present invention Sectional view of II-II in Fig. 1 The perspective view of the separating device immediately after cutting the tensile material of the separating device Model diagram of a separating device that separates multiple tensile materials simultaneously

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1> Separation Device FIG. 1 shows an overall view of the separation device 10, and FIG. 2 shows a partial sectional view thereof.
The separating device 10 according to the present invention is a device disposed between members on which a tensile force acts, and a tensile material 20 corresponding to a separating device body formed of a heat-meltable material, and a transverse direction of the tensile material 20 The electric heater 30 is integrally provided along the electric heater 30, and the power supply unit 40 that supplies power to the electric heater 30.

<2> Tensile Material The tensile material 20 is a flexible member having characteristics such as tensile strength, durability, wear resistance, and low elongation that can support the weight of the weight 40.

<2.1> Example of Tensile Material In this example, the tensile material 20 is formed in a loop shape by stitching both ends of a belt material having a multi-layer structure in which weft-woven polyester yarn is used. It may be a non-loop shape that does not close.
When the tension member 20 has a non-loop shape, a locking loop may be formed at both ends of the tension member 20.
Moreover, the form of the tension member 20 is not limited to a belt shape, and may be, for example, a string shape or a tube shape.

<2.2> Dimensions of tensile material The cross-sectional width and total length of the tensile material 20 are appropriately selected in consideration of the installation conditions, the magnitude of the tensile load to be applied, and the like.

<2.3> Material Example of Tensile Material The material of the tension material 20 is a heat-meltable or combustible material, and for example, natural fiber, chemical fiber, or resin can be applied.

<2.4> Tensile Material Connection Target In this example, a mode in which the tension material 20 is directly interposed between the hook 50 of the crane and the hook 52 of the weight 51 that is a fallen object will be described as an example.
As another installation form of the tension member 20, for example, an opening / closing door is provided in a part of a container or a dam structure that accommodates various fallen objects, the tension member 20 is attached to the opening / closing door, and the door is always closed. It is also possible to use it for the purpose of opening the opening / closing door by cutting the material 20 and dropping the fallen object.
The connection target of the tensile material 20 is directly or indirectly connected to the falling object according to the purpose of the test, the type of the falling object, and the like.

<3> Electric Heater The electric heater 30 is a linear electric heat cutter that heats and cuts the tensile material 20, and terminals 31 are formed at the exposed ends.

<3.1> Material Example of Electric Heater As the electric heater 30, a known heating wire such as a nichrome wire can be used, and the number thereof may be a single wire, or a plurality of stranded wires can be applied. .

<3.2> Attaching Form of Electric Heater As a form in which the electric heater 30 is attached to the tension material 20, the tension material 20 is sewn by the electric heater 30 in addition to a form in which the inner center of the tension material 20 is penetrated. It may be arranged in such a manner that it may be provided in contact with one side or both sides of the tensile material 20.
In short, what is necessary is just to arrange | position so that the tension | tensile_strength material 20 can be cut | disconnected in a cross direction with the high heat | fever of the electric heater 30 when electric power is supplied to the electric heater 30.

<3.3> Attached Form of this Example An attached form of the electric heater 30 illustrated in FIG. 2 will be described. Using a tensile material 20 in which chemical fibers are knitted into a seat belt shape, a sharp tool such as a cone is used in advance. A through-hole or notch is formed over the entire width of the tensile material 20, and the rod-shaped electric heater 30 is inserted from one side of the through-hole to penetrate the central portion of the tensile material 20, and then the end of the electric heater 30 is The terminal 31 is formed by bending.
At this time, the exposed portion of the electric heater 30 is gripped by the grip materials 32 and 32 so that the electric heater 30 does not slide with respect to the tension member 20, and the heat-resistant protective cylinders 33 and 33 are formed on the exposed portion of the electric heater 30. Exterior.

<3.4> Number of Electric Heaters Installed In this example, an embodiment in which one electric heater 30 is attached to the tensile material 20 is shown, but a plurality of electric heaters 30 may be attached to one tensile material 20. .

<4> Power supply unit Since the separation device 10 according to the present invention uses the electric heater 30 as a means for separating the tension member 20, no incidental equipment such as a conventional large fluid control unit is required. Only the power supply unit 40 is sufficient.
The power supply unit 40 includes a wiring 41 connected to the terminals 31, 31 of the electric heater 30, a power supply 42 that supplies power to the electric heater 30 via the wiring 41, and a power switch 43.
The power source 41 includes a DC power source or an AC power source, and the current and voltage can be adjusted so as to reach a predetermined high temperature at which the electric heater 30 can heat and cut the tensile material 20.
When used in a mountainous area or the like, it is possible to use a storage battery such as a battery or a known generator as the power source 41.

  Next, a method of using the cutting device 10 will be described.

<1> Carrying in the on-site separation device Since the tension member 20 with the electric heater 30 that constitutes the on-off device 10 is lightweight and the power supply unit 40 is also relatively lightweight, the on-site carrying of the separation device 10 is easy Yes.

<2> Setting of separation device The separation device 10 carried into the site is set in the following manner.

<2.1> Set of tensile material The tensile material 20 is set between members on which a tensile force acts.
When used in the drop test of the weight 51 illustrated in FIG. 1, the loop-shaped tension member 20 is bridged between the hook 50 of the crane and the hook 52 of the weight 51.
In this example, the tension material 20 can be set by a simple operation of simply spanning the lightweight tension material 20.

<2.2> Connection of wiring Next, the wiring 41 is connected between the terminals 31 and 31 of the electric heater 30 and the power supply unit 40.
In this manner, the installation work of the separation device 10 can be completed in a short time with a simple work of simply placing and wiring the tension member 20 with the electric heater 30.

<3> Lifting the weight The crane hook 50 is operated to lift the weight 51 to a predetermined test height.
At this time, since the tensile strength of the tensile material 20 is set to a strength capable of supporting the weight 51 in advance, there is no risk of inadvertent cutting.
Further, the weight of the suspended weight 51 does not act on the electric heater 30.

<4> Disconnection The power switch 43 of the power supply unit 40 is turned ON in accordance with the disconnection timing.
When electric power is supplied to the electric heater 30, the electric heater 30 is instantaneously heated to a predetermined high temperature.
When the temperature of the electric heater 30 reaches the melting temperature or the combustion temperature of the tensile material 20, the tensile material 20 is cut and separated from the hook 50. FIG. 3 shows a state immediately after the tensile material 20 is cut, and the weight 51 that has lost the support member falls by its own weight.

  Even if the contact between the electric heater 30 and the tension material 20 is not uniform, a high tension is applied to the tension material 20, so that if a part of the tension material 20 is forcibly heated and cut, the force cutting is performed. By concentrating the tensile force on the part that has been cut, the cutting range is instantly expanded and the entire width of the tensile material 20 can be cut reliably.

<5> Other Attached Forms of Electric Heater The above has described a form in which the entire length of the electric heater 30 is longer than the transverse width of the tensile material 20 and is attached across the tensile material 20.
As another attachment form of the electric heater 30, the entire length of the electric heater 30 may be shorter than the transverse width of the tensile material 20, and the electric heater 30 may be attached to a part of the tensile material 20 in the transverse direction.

[Other forms of separating multiple tensile materials simultaneously]
With reference to FIG. 4, another separating apparatus 10 that simultaneously separates a plurality of tensile members 20 provided with an electric heater 30 will be described.

<1> Arrangement Form of Tensile Material In this example, one end (upper end) of each tensile member 20 is connected to the stationary member 53, and a tensile force acts on the tensile member 20 at the other end (lower end) of each tensile member 20. In addition, a case where load weight generating elements F such as weights are connected and a plurality of load weight generating elements F are separated by cutting the tensile material 20 all at once will be described.
Between the terminals 31 and 31 of the electric heater 30 attached to a part of each tension member 20 and the power supply unit 40, the wiring 41 is electrically connected in parallel or in series.
In this example, a plurality of electric heaters 30 are electrically connected to one power supply unit 40.

<2> Disconnection In this example, all the electric heaters 30 instantaneously reach a high temperature simply by turning on the power switch 43 of the power supply unit 40, so that all the tensile members 20 can be cut at the same time.
Since it is possible to accurately synchronize the timing of the separation by all the tensile members 20, it is difficult to cause a time difference compared to a conventional separation device that mechanically separates.
Therefore, when the test is performed by simultaneously separating the plurality of load weight generating elements F, the test result becomes highly accurate.

DESCRIPTION OF SYMBOLS 10 ... Cutting device 20 ... Tensile material 30 ... Electric heater 31 ... Terminal 40 ... Power supply unit 41 ... Wiring 42 ... ... Power supply 43 ... Power switch 51 ... Weight

Claims (4)

A separating device disposed between members on which a tensile force acts,
One or a plurality of tensile materials, which are arranged between members on which tensile force acts and are formed of a heat-meltable material capable of being heated and cut,
An electric heater integrally attached to a part of the tensile material;
A power supply unit for supplying power to the electric heater,
Separation device.   The separation apparatus according to claim 1, wherein the electric heater is provided along a transverse direction of the tensile material.   The cutting device according to claim 1, wherein the tensile material has a loop shape.   The power supply unit includes wiring connected to both ends of the electric heater, a power supply that supplies electric power to the electric heater via the wiring, and a power switch. Cutting device.

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