JP2014234694A - Carrier device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrier device capable of easily carrying rigidity measuring equipment along a railway track.SOLUTION: A carrier device 1 for carrying weight-dropping type rigidity measuring equipment 80 along a railway track includes a wheel 3 that travels on one rail, a support arm 5 for supporting the rigidity measuring equipment 80, a support shaft 4 orthogonal to an axle of the wheel 3, to which a base of the support arm 5 is fixed, and an operation rod 6 that has a base fixed to the support shaft 4 and that operates swinging of the support arm 5 on the support shaft.

Description

  The present invention relates to a transport device that transports a weight drop type stiffness measuring device.

  Conventionally, there is a weight drop type stiffness measuring device called FWD (Falling Weight Defectometer) that measures the stiffness of earth structures such as embankments, cuts, roadbeds, and roadbeds (see, for example, Patent Document 1). ). The FWD is an apparatus that applies an impact load to the earth structure by freely dropping the weight, and measures the rigidity of the earth structure from the reaction force and displacement generated by the impact load.

JP 2003-176504 A JP 2004-278165 A

However, in the prior art, since the weight is used, the weight of the rigidity measuring device is heavy, such as about 20 to 30 kg even for a small object. Was hard labor.
Therefore, as shown in Patent Document 2, a traction-type stiffness measurement device mounted on a traveling carriage to be pulled by a vehicle and a vehicle-mounted stiffness measurement device mounted on the vehicle itself have been proposed. On railway tracks that cannot be carried out, it was still necessary to manually transport the rigidity measuring device.

  The present invention has been made in view of such a situation, and an object of the present invention is to solve the above-described problems and to provide a transport device that can easily transport a stiffness measuring device along a railway track. .

The transport device of the present invention is a transport device that transports a weight drop type stiffness measuring device along a railroad track, a wheel that travels on one rail, a support arm that supports the stiffness measuring device, A support shaft orthogonal to the axle of the wheel, to which the base portion of the support arm is fixed, and an operation rod, the base portion of which is fixed to the support shaft, operate to swing the support arm around the support shaft. It is characterized by that.
Furthermore, in the transport apparatus of the present invention, the support shaft may be disposed on the rail.
Furthermore, in the transport apparatus of the present invention, at least the surface of the operation rod may be made of an insulator.
Furthermore, in the transport apparatus of the present invention, the support arm may include an adjustment mechanism that adjusts the support position of the rigidity measuring device in the vertical direction.
Furthermore, in the transport device according to the present invention, the wheel may include a first flange portion that guides the inner side of the gauge, a second flange portion that guides the outer side of the gauge, and is movable in the axle direction. And an urging means for urging toward.
Furthermore, in the transport device of the present invention, the peripheral surface of the second flange portion may be formed as an inclined surface whose diameter decreases from the outer side of the gauge toward the inner side.

  According to the present invention, the stiffness measuring device can be easily lifted by operating the operating rod, and the lifted stiffness measuring device can be easily run on the rail by rolling the wheel. Can be easily conveyed in the track direction along the rail.

It is a three-plane figure which shows the structure of embodiment of the conveying apparatus which concerns on this invention, (a) is a front view, (b) is a top view, (c) is a side view. It is a front view which shows the structure of the wheel shown in FIG. It is explanatory drawing for demonstrating the usage method of embodiment of the conveying apparatus which concerns on this invention. It is explanatory drawing for demonstrating the example which made the connection arm shown in FIG. 1 extend-contractable. It is explanatory drawing for demonstrating the usage example in the ballast track | orbit of the conveying apparatus which concerns on embodiment of this invention.

Next, embodiments of the present invention will be specifically described with reference to the drawings.
Referring to FIG. 1, the conveying device 1 according to the present embodiment has a main body 2, a wheel 3 in which an axle 31 is pivotally supported by the main body 2, and a main body 2 in a direction orthogonal to the axle 31 of the wheel 3. A support shaft 4 that is pivotally supported, and a support arm 5 and an operation rod 6 that have one end fixed to the support shaft 4 are provided.

  The main body 2 is bridged between a pair of wheel support plates 21 that respectively support the axles 31 of the two wheels 3 aligned in the front-rear direction and the upper portions of the pair of wheel support plates 21 to reinforce the main body 2. A pair of support shaft support plates 22 that support the support shaft 4 are also provided. Forehead portions 22a facing each other in a direction orthogonal to the axle 31 of the wheel 3 are respectively formed on the pair of support shaft support plates 22, and the support shaft 4 is pivoted between the forehead portions 22a of the pair of support shaft support plates 22. It is supported.

  The wheel 3 pivotally supported by the wheel support plate 21 rolls on one rail rail 70. In the present embodiment, two wheels 3 are provided in the front-rear direction, but the number of wheels 3 may be one or three or more.

  As shown in FIG. 2A, the wheel 3 is formed with a disk-shaped first flange portion 32 that guides the inside of the rail 70. Further, the axle 31 is provided with a disk-like second flange portion 33 that guides the outside of the rail 70 between the rails 70 so as to be movable in the axial direction (left-right direction). A disc-shaped third flange portion 34 sandwiching the flange portion 33 is formed. A spring 35 is provided around the axle 31 between the second flange portion 33 and the third flange portion 34 to urge the second flange portion 33 in the direction of the wheel 3 (right direction). Moreover, the surrounding surface of the 2nd flange part 33 becomes the inclined surface 33a from which a diameter becomes small toward an inner side from a gauge outer side.

  As described above, the wheel 3 includes the first flange portion 32 that guides the inner side of the rail 70 between the rails and the second flange portion 33 that guides the outer side of the rail 70. It becomes possible to roll. In addition, since the second flange portion 33 is movable in the axial direction (left-right direction), as shown in FIG. 2B, the protrusions 71 such as rail bonds existing outside the rails of the rail 70 are avoided. Can do. That is, when the protrusion 71 is present when the transport device 1 is run along the track direction of the rail 70, the protrusion 71 contacts the inclined surface 33a of the second flange portion 33, and the second flange portion 33 is It is moved in the direction (right direction) from the wheel 3 against the urging force of the spring 35. Thereby, damage to the protrusion 71 by the 2nd flange part 33 which guides a gauge outer side is prevented. In the present embodiment, only the second flange portion 33 is configured to be movable in the axial direction (left-right direction), but the first flange portion 32 is also axially (left-right direction) similar to the second flange portion 33. It may be configured to be movable. In this case, the direction in which the wheel 3 is placed on the rail 70 is not limited.

  The support shaft 4 is a central axis for swinging the support arm 5 and the operation rod 6. The support shaft 4 is disposed between the two wheels 3 in the track direction with the wheel 3 placed on the rail 70, and is disposed on the rail 70 in parallel with the rail 70 (track direction).

  The support arm 5 connects a base arm portion 51 having one end fixed to the support shaft 4, a support portion 52 that supports a weight drop type stiffness measuring device, and an open end of the base arm portion 51 and the support portion 52. And a connecting arm portion 53 to be connected. The support part 52 is a ring-shaped member that supports the rigidity measuring device by tightening. Further, the connection between the open end of the base arm part 51 and the connecting arm part 53 and the connection between the connecting arm part 53 and the support part 52 are performed by fasteners such as bolts and nuts, respectively. And it becomes the structure which can adjust the angle of the rotation direction of the spindle 4 of the base arm part 51, the support part 52, and the connection arm part 53 by loosening a fastener.

  The operation rod 6 is a rod-shaped member whose surface is made of an insulator, and the base is fixed to the support shaft 4 at a predetermined angle with the base arm portion 51 of the support arm 5 in the rotation direction of the support shaft 4. ing. Thereby, the operating rod 6 functions as an operating means for operating the swinging of the support arm 5 around the support shaft 4. That is, when the operating rod 6 has the open end side of the operating rod 6 and the operating rod 6 is swung about the support shaft 4, the support arm 5 is also swung by the same angle about the supporting shaft 4. The operation rod 6 may be entirely composed of an insulating material such as glass fiber or hard rubber, or a metal rod that is a conductive material may be coated with an insulating material such as fluorine resin.

Next, the usage method of the conveying apparatus 1 is demonstrated in detail with reference to FIG.
First, as shown in FIG. 3A, the rigidity measuring device 80 is supported by the support arm 5 in a state where the weight falling type stiffness measuring device 80 is loaded on the surface to be measured along the rail 70.

  In the present embodiment, since the cylindrical load meter 81 in the stiffness measuring device 80 is configured to be clamped and supported by the ring-shaped support portion 52, the stiffness measuring device 80 is clamped and supported by the support portion 52. The position can be adjusted in the vertical direction indicated by the arrow A according to the height h from the rail surface of the rail 70 to the measurement target surface. The height differs depending on the type of track, for example, the type of rail 70, and the rail height of JIS 50 kgN is lower by about 20 mm than JIS 60 kg. For this reason, a mechanism for adjusting the support position of the stiffness measuring device 80 in the vertical direction is required. In this case, the ring-shaped support portion 52 functions as an adjustment mechanism for adjusting the support position of the stiffness measuring device 80 in the vertical direction. To do.

  Further, as described above, the rotation angle of the support shaft 4 between the base arm portion 51 and the support portion 52 and the connecting arm portion 53 is also adjustable. Therefore, even if the angle of the rotation direction of the support shaft 4 of the base arm part 51 and the support part 52 and the connecting arm part 53 is adjusted as shown by arrows B and C, the rail 70 to the measurement target surface can be adjusted. Depending on the height h, the rigidity measurement device 80 support position can be adjusted in the vertical direction. In this case, the connecting arm portion 53 functions as an adjustment mechanism that adjusts the support position of the stiffness measuring device 80 in the vertical direction.

  The ring-shaped support portion 52 adjusts the support position of the stiffness measuring device 80 and adjusts the angle between the base arm portion 51 and the support portion 52 and the connecting arm portion 53 at the same time. The distance L to can be set within a predetermined range.

  Furthermore, by using a connecting arm portion 53a that is provided with an expansion / contraction mechanism and that can be adjusted in length, the base arm portion 51 and the support portion 52 are connected to each other, so that FIG. As shown in (b), the distances L1 and L2 from the rail 70 to the measurement location can be set in a wider range.

  Next, when moving to the next measurement location after measurement of the synthesis by the stiffness measuring device 80, holding the open end side of the operating rod 6 and swinging the operating rod 6 about the support shaft 4 As shown in FIG. 3B, the support arm 5 is also swung by the same angle around the support shaft 4, and the stiffness measuring device 80 is lifted. In the state where the rigidity measuring device 80 is lifted, the open end of the operation rod 6 that is a power point is configured to be located inside the gauge. Accordingly, the force F that pushes the open end of the operating rod 6 downward and the weight G of the stiffness measuring device 80 act on the support shaft 4. Since the support shaft 4 is disposed on the rail 70 as described above, the balance between the force F pushing the open end of the operating rod 6 downward on the rail 70 and the weight G of the stiffness measuring device 80 is balanced. Can take. In this state, by pushing the transport device 1 in the track direction, the stiffness measuring device 80 can be easily transported without being lifted by hand.

  When the rigidity measuring device 80 is transported and arrives at the next measurement location, the rigidity measuring device 80 is again lowered onto the surface to be measured, whereby the rigidity is measured by the rigidity measuring device 80. In addition, when the height h from the rail surface of the rail 70 to the measurement target surface is the same, the rigidity is measured under the same conditions without adjusting the support position of the rigidity measuring device 80 for each measurement point. Can do.

Next, an example of use of the transfer device 1 in the ballast track will be described in detail with reference to FIG.
It is suitable for the conveyance of the rigidity measuring device 80 in the ballast track of the conveyance device 1.
That is, as shown in FIG. 5, the sleeper 73 is laid on the ballast roadbed 72 in the ballast track. Then, using the stiffness measuring device 80, the rigidity of the ballast roadbed 72 under the sleeper 73 laid at different positions in the laying direction of the rail 70 (hereinafter referred to as “track direction”), that is, a track that supports the track. Each support stiffness is measured. Therefore, when the rigidity measuring device 80 is transported to the next measurement location, it passes over the ballast roadbed 72 having a poor footing and is carried by hand or transported using a cart such as a cat car. Difficult to do. Therefore, by using the transport device 1, the lifted rigidity measuring device 80 can be easily transported on the rail 70 by rolling of the wheels 3 even on the ballast roadbed 72 having a poor scaffold.

As described above, the present embodiment is the transport device 1 that transports the weight drop-type stiffness measuring device 80 along the railroad track, and includes the wheel 3 traveling on one rail, and the stiffness measuring device 80. A support arm 5 that supports the support shaft 5, a support shaft 4 that is fixed to the base portion of the wheel 3, and a base portion that is fixed to the support shaft 4. And an operation rod 6 for operating the movement.
With this configuration, the rigidity measuring device 80 can be easily lifted by operating the operation rod 6, and the lifted rigidity measuring device 80 can easily travel on the rail 70 by rolling the wheels 3. The rigidity measuring device 80 can be easily transported along the rail 70 in the track direction.

Further, according to the present embodiment, the support shaft 4 is disposed on the rail 70.
With this configuration, the force F that pushes the open end of the operating rod 6 downward and the weight G of the stiffness measuring device 80 act on the support shaft 4, and the force that pushes the open end of the operating rod 6 downward on the rail 70. F and the weight G of the stiffness measuring device 80 can be balanced.

Furthermore, according to the present embodiment, at least the surface of the operating rod 6 is made of an insulator.
Even if the transport device 1 falls down and the operation rod 6 is bridged between the rails 70, the rails 70 do not conduct.

Furthermore, according to the present embodiment, the support arm 5 includes an adjustment mechanism (support portion 52, connection arm portions 53, 53a) that adjusts the support position of the stiffness measuring device 80 in the vertical direction.
With this configuration, the rigidity measuring device 80 can be loaded at a predetermined measurement position. As a result, variations in rigidity measurement by the rigidity measuring device 80 can be suppressed, and highly accurate measurement can be performed. In addition, even when the type and height of the rail 70 are changed, the rigidity measuring device 80 can be loaded at an appropriate position.

Further, according to the present embodiment, the wheel 3 includes a first flange portion 32 that guides the inside of the gauge, a second flange portion 33 that guides the outside of the gauge, and is movable in the direction of the axle 31, and the second flange portion. And a spring 35 for urging 33 toward the inside of the gauge.
With this configuration, the wheel 3 can stably roll on one rail 70. Further, it is possible to avoid the protrusions 71 such as rail bonds existing on the outer side of the rail 70, and the protrusion 71 is prevented from being damaged by the second flange portion 33 that guides the outer side of the rail.

Furthermore, according to this Embodiment, the surrounding surface of the 2nd flange part 33 is formed in the inclined surface 33a from which a diameter becomes small toward an inner side from the gauge outer side.
With this configuration, it is possible to easily avoid protrusions 71 such as rail bonds by simply moving the transport device 1 in the track direction, and the transport device 1 can be easily moved on the rail 70 in the track direction. .

  Note that the configuration and operation of the above-described embodiment are examples, and it is needless to say that the configuration and operation can be appropriately changed and executed without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Transfer apparatus 2 Main body part 3 Wheel 4 Support shaft 5 Support arm 6 Operation rod 21 Wheel support plate 22 Support shaft support plate 22a Forehead part 31 Axle 32 First flange part 33 Second flange part 34 Third flange part 33a Inclined surface 35 Spring 51 Base arm part 52 Support part 53, 53a Connection arm part 70 Rail 71 Projection 72 Ballast roadbed 73 Sleeper 80 Stiffness measuring device 81 Load cell

Claims (6)

A transport device for transporting a weight drop type stiffness measuring device along a railway track,
Wheels running on one rail,
A support arm that supports the stiffness measuring device;
A support shaft orthogonal to the axle of the wheel, to which the base of the support arm is fixed,
A conveying device comprising: a base portion fixed to the support shaft, and an operation rod for operating swinging of the support arm around the support shaft.   The transport device according to claim 1, wherein the support shaft is disposed on the rail.   The conveying apparatus according to claim 1, wherein at least a surface of the operation rod is made of an insulator.   The said support arm is equipped with the adjustment mechanism which adjusts the support position of the said rigidity measuring apparatus in an up-down direction, The conveying apparatus in any one of the Claims 1 thru | or 3 characterized by the above-mentioned. The wheel includes a first flange portion that guides the inside of the gauge,
A second flange part that guides the outside of the gauge and is movable in the axle direction;
The conveying apparatus according to claim 1, further comprising an urging unit that urges the second flange portion toward the inside of the gauge.   The conveying device according to claim 5, wherein the peripheral surface of the second flange portion is an inclined surface whose diameter decreases from the outer side of the gauge toward the inner side.

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