JP2012184949A - Tread board frame and toll collection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tread board frame capable of realizing an integrated management of vehicle specification information and axial load information without reducing accuracy in detecting pressing force and axial force of a vehicle.SOLUTION: A tread board frame 20, to install a tread board for detecting pressing force of a vehicle traveling on a passage for transit processing in a pay facility for the vehicle, comprises: a first frame 21 having a first bottom plate section 22 which is installed in a concave section 50 constructed on the passage; a second frame 25 which has a second bottom plate section 26 placed on the first bottom plate section 22 and fixes the tread board; and a load detection section 24 which is arranged between the first bottom plate section 22 and the second bottom plate section 26 and detects a load acting on the second bottom plate section 26.

Description

  The present invention relates to a tread frame for installing a tread board for detecting a pressing of a vehicle at a toll gate of a toll facility for vehicles such as a toll road and a parking lot, and a toll collection system including the tread.

  In recent years, ETC (Electronic Toll Collection System) has been introduced as a system for automating toll collection at toll gates such as toll roads and parking lots. This toll collection method by ETC obtains vehicle specific information of the vehicle by performing wireless communication between the IC card set in the vehicle-mounted device mounted on the vehicle and the antenna of the toll collection system installed at the toll gate The toll is collected.

  In the toll collection system, a toll passage is provided with a tread for detecting entry of a vehicle (see, for example, Patent Document 1). The tread is embedded in the passage, and a contact body provided therein is short-circuited to the vehicle by weight, thereby detecting the pressing of the vehicle. A pressing signal indicating the presence or absence of pressing is output to a lane server of the toll collection system, and the lane server performs vehicle entry detection and forward / backward detection based on the pressing signal.

In addition, a tread board that can detect a distance (tread) between left and right wheels in a vehicle is also known (see, for example, Patent Document 2).
Information based on the pressure of the vehicle detected by such a tread (hereinafter referred to as tread detection information) is linked to the vehicle specifying information acquired by the antenna by the lane server, and is used for smooth operation of the toll road. ing.

On the other hand, an axle weight meter is provided in front of the toll gate on the toll road separately from the toll collection system (see, for example, Patent Document 3). This axle weight meter measures the axle weight of a passing vehicle and determines the possibility of overloading for the purpose of road maintenance and the like.
Also known is a tread that can detect the axle weight of a vehicle with a pressure sensor such as a strain gauge and obtain tread detection information such as the number of axles of the vehicle, tread, and forward / reverse based on the detected axle weight information. (For example, refer to Patent Document 4).

Japanese Patent No. 2941650 JP-A 61-166688 JP 2008-039489 A Japanese Patent Application Laid-Open No. 07-225891

  By the way, in the current road traffic system, the tread board and the axle weight meter in the toll collection system are arranged with a certain distance in the vehicle traveling direction and managed separately. Therefore, for example, when vehicle axle load information is to be managed collectively by the toll collection system, the vehicle specific information acquired by the antenna and the axle load information acquired by the axle load meter can be linked to be integrated. There was a problem that it was difficult.

  That is, for example, if the preceding vehicle once passes through the axle weight meter and then moves backward and moves to another lane, the vehicle identification information of the following vehicle acquired by the antenna may be associated with the axle weight information of the preceding vehicle. There is. In addition, in the case of a vehicle having a large number of axes and a long vehicle length such as a large trailer, the axle load information of the last wheel may be associated with the vehicle identification information of the following vehicle. Therefore, there is a possibility that it is erroneously specified which vehicle is likely to be overloaded, and it is difficult to perform unified management by associating the vehicle specifying information with the axle weight meter.

  Here, for example, in the case of a tread that can also detect vehicle axle load information, such as the tread described in Patent Document 4, unified management of the axle load information and vehicle specifying information acquired by the antenna is performed. It can also be done.

However, the tread described in Patent Document 4 has a drawback in that reliability and life are insufficient because the processing is complicated compared to a tread including a contact body as described in Patent Document 1, for example. In addition, since the tread described in Patent Document 4 is not supposed to detect overloading in the first place, when excessive axle load acts from the vehicle, there is a possibility that the axle load cannot be measured appropriately. .
Therefore, in the tread described in Patent Document 4, there is a problem in that it is not possible to detect the vehicle pressure with high reliability while ensuring the overload determination with as much axle load measurement accuracy as possible.

  The present invention has been made in view of the above-described problems, and it is possible to realize unified management of vehicle specifying information and axle load information without reducing the accuracy of detecting the pressure of the vehicle and the axle load. An object is to provide a tread frame and a toll collection system.

In order to achieve the above object, the present invention employs the following means.
That is, the tread frame according to the present invention is a tread frame for installing in the passage a tread that detects the pressure of a vehicle traveling in a passage for passage processing of a toll facility for vehicles, and is formed in the passage. A first frame having a first bottom plate portion installed in the recessed portion, a second frame having a second bottom plate portion which is installed above the first bottom plate portion and fixes the tread, and the first bottom plate portion And a load detecting unit that detects a load acting on the second bottom plate part.

  According to the footboard frame having such a feature, the load acting on the second frame for fixing the footboard for detecting the pressing of the vehicle, that is, the axle load of the vehicle, is caused by the second bottom plate portion of the two frames and the first frame. It is detected by the load detection part between the first bottom plate part. As a result, it is possible to detect not only the pressure of the vehicle but also the axle load when the vehicle traveling on the passage passes through the tread, while allowing the detection of the vehicle pressure and the detection of the axle weight to be performed separately. it can.

Moreover, in the tread frame according to the present invention, it is preferable that the load detection unit is a load cell or a pressure-sensitive sheet that is installed on the first bottom plate and is in contact with the second bottom plate from above.
As a result, it is possible to reliably detect the load acting on the second bottom plate, that is, the axle load of the vehicle.

  Furthermore, in the tread frame according to the present invention, the second frame further includes a support leg portion that supports the second bottom plate portion with a space above the first bottom plate portion, and the load detection unit includes The strain gauge provided on the second bottom plate portion may be used.

  By supporting the second bottom plate portion above the first bottom plate portion via the support leg portion, when the axle load of the vehicle acts on the second bottom plate portion, the second bottom plate portion bends downward. Displaces like When the strain gauge detects this displacement, the axle load of the vehicle can be easily detected.

  The tread frame according to the present invention further includes a spacer that supports the second bottom plate portion with a space above the first bottom plate portion, and the load detection portion is a strain gauge provided on the spacer. There may be.

  When the axle load of the vehicle acts on the second bottom plate portion, the spacer that supports the second bottom plate portion is deformed. By detecting the deformation of the spacer with a strain gauge, the axle load of the vehicle can be easily detected.

Furthermore, in the tread frame according to the present invention, the first frame further includes a first side plate that rises from the outer periphery of the first bottom plate, and the second frame rises from the outer periphery of the second bottom plate. It is preferable to further have a second side plate portion that fixes the tread plate from the periphery and abuts against the first side plate portion.
As a result, the second frame can be supported in the first frame so as to be immovable in the horizontal direction, and the tread can be firmly fixed inside the second frame. It can be appropriately transmitted to the two bottom plate portions. This makes it possible to more reliably detect the vehicle axle weight.

  A toll collection system according to the present invention is a toll collection system that is installed in a toll facility for a vehicle and collects a toll fee for use of the toll facility. The tread board is housed in the second frame and detects the pressing of the vehicle by a short circuit of a contact body provided therein.

  According to the toll collection system having such characteristics, the load acting on the second frame for fixing the tread for detecting the pressing of the vehicle, that is, the axle load of the vehicle, the second bottom plate portion of the two frames and the first frame It can detect by the load detection part between the 1st bottom plate parts. As a result, it is possible to detect the pressing force of the vehicle and the detection of the axle load separately, while detecting the axle load at the same time as the vehicle traveling on the passage passes the tread.

  According to the tread frame and toll collection system of the present invention, it is possible to separately detect the pressing of the vehicle and the detection of the axle load, so that the measurement accuracy of the tread and the load detection unit is not lowered. Further, since the vehicle running on the passage passes through the tread board and the axle load is detected at the same time, for example, it is possible to avoid the axle load of the preceding vehicle being linked to the vehicle specifying information of the succeeding vehicle. Therefore, it is possible to realize unified management of vehicle specifying information and axle load information.

It is a top view which shows schematic structure of the fee collection system of this embodiment. It is a longitudinal cross-sectional view of the tread and the tread frame according to the first embodiment. It is a longitudinal cross-sectional view of the tread board and tread frame which concern on the modification of 1st embodiment. It is a longitudinal cross-sectional view of the tread board and tread frame which concern on 2nd embodiment. It is a longitudinal cross-sectional view of the tread board and tread frame which concern on 3rd embodiment.

Hereinafter, a tread frame and a toll collection system according to an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the toll collection system 1 is provided in a passage for processing between islands in, for example, a toll gate on a toll road, and includes a tread board 10 accommodated in a tread frame 20 and a first vehicle. Of the detector 2, the second vehicle detector 3, the third vehicle detector 4, the first antenna 5, the second antenna 6, the start controller 7, the roadside indicator 8, and the toll collection system 1. And a lane server (not shown) for controlling each device.

As shown in FIG. 1, the tread board 10 is installed so as to extend in the width direction of the passage at the entrance of the passage.
As shown in FIG. 2, the tread 10 includes a tread main body 11 having a rectangular shape in plan view in which the passage width direction is a longitudinal direction and the vehicle traveling direction is a short direction, and has a predetermined thickness in the vertical direction. ing. The tread board main body 11 is formed of an elastic body such as rubber, and a plurality of cavities 12 extending in the passage width direction are spaced apart in the vehicle traveling direction (four in this embodiment). Is formed. Further, a plurality of (four in this embodiment) ridges 11 a that protrude upward and extend in the passage width direction are formed at locations corresponding to the hollow portions 12 on the upper surface of the tread plate 10.

  The four cavities 12 are provided with contact sensors 13 respectively. The contact sensor 13 includes a pair of contact bodies that are spaced apart from each other in the vertical direction, and detects pressing of the vehicle when the contact bodies are short-circuited. A pressing signal indicating the presence or absence of pressing of the vehicle detected by the contact sensor 13 is output to the lane server. The lane server detects tread board detection information such as the number of axes and the forward and backward movement of the vehicle based on the pressing signal.

  As shown in FIG. 1, the first vehicle detector 2, the second vehicle detector 3, and the third vehicle detector 4 are a pair of optical sensors installed on both sides of the passage so as to face each other across the passage. The vehicle detection signal which shows whether the space between these pair of optical sensors is a light transmission state or a light-shielding state is output to a lane server. The lane server detects vehicle entry when the vehicle detection signal transitions from the light-transmitting state to the light-blocking state, and detects passage of the vehicle when the vehicle detection signal transitions from the light-blocking state to the light-transmitting state.

  The first vehicle detector 2 is installed at substantially the same position as the tread board 10 in the vehicle traveling direction of the passage. The second vehicle detector 3 is installed on the front side in the vehicle traveling direction from the first vehicle detector 2, and the third vehicle detector 4 is further on the front side in the vehicle traveling direction than the second vehicle detector 3. Is installed.

  The 1st antenna 5 communicates with the onboard equipment mounted in the vehicle which drive | works a path | route, and reads the vehicle specific information which specifies a vehicle from onboard equipment by control of a lane server. The first antenna 5 is installed in front of the second vehicle detector 3 in the vehicle traveling direction so as to be adjacent to the second vehicle detector 3 in the vehicle traveling direction. A range between the vehicle detector 3 is a communication area.

  The second antenna 6 communicates with the vehicle-mounted device mounted on the vehicle traveling along the passage, and writes the vehicle type information determined using the number of axles counted by the tread board 10 to the vehicle-mounted device under the control of the lane server.

The start controller 7 is installed behind the third vehicle detector 4 in the vehicle traveling direction, and includes a blocking bar installed so that the passage can be freely opened and closed. The start controller 7 opens or closes the passage by opening and closing the blocking bar under the control of the lane server.
The roadside indicator 8 displays information notified to the vehicle driver under the control of the lane server.

  Next, the tread frame 20 for installing the tread will be described. As shown in FIG. 2, the tread frame 20 includes a first frame 21, a second frame 25, and a load detection unit 24. The tread frame 20 is installed in a concave portion 50 having a rectangular shape in plan view formed at the entrance of the passage. Has been.

The first frame 21 has a bottomed box shape having a rectangular shape in plan view that is substantially the same as the concave portion 50, and is installed so as to be fitted into the concave portion 50.
The first frame 21 is formed of a material having high rigidity such as a steel material, and includes a first bottom plate portion 22 and a first side plate portion 23.

The first bottom plate portion 22 is a rectangular plate member serving as a base of the first frame 21, and is placed on the bottom surface so as to cover the bottom surface of the recess 50.
Further, the first side plate portion 23 has a substantially cylindrical shape that rises in a square tube shape from the outer periphery of the first bottom plate portion 22, that is, the end portions on both sides in the vehicle traveling direction and the end portions on both sides in the width direction of the first bottom plate portion 22. There is no. The first side plate portion 23 is in close contact with the inner wall surface of the recess 50, whereby the first frame 21 is fixed in the recess 50 so as not to move in the horizontal direction. The height of the first side plate portion 23 is substantially the same as that of the recess 50, and the upper end of the first side plate portion 23 is exposed on the road surface flush with the road surface.

  The second frame 25 has a bottomed box shape having a rectangular shape in plan view that is slightly smaller than the first frame 21, and is installed so as to be fitted into the first frame 21. Like the first frame 21, the second frame 25 is made of a highly rigid material such as a steel material, and includes a second bottom plate portion 26 and a second side plate portion 27.

  The second bottom plate portion 26 is a rectangular plate-like member, and is disposed in parallel with the first bottom plate portion 22 with an interval above the first bottom plate portion 22 in the first frame 21. Further, the second side plate portion 27 has a cylindrical shape that rises in a square tube shape from the outer periphery of the second bottom plate portion 26, that is, from both ends of the second bottom plate portion 26 in the vehicle traveling direction and ends in the passage width direction. ing. The outer peripheral surface of the second side plate portion 27 is in contact with the outer peripheral surface of the first side plate portion 23 so as to be slidable in the vertical direction. The height of the second side plate portion 27 from the second bottom plate portion 26 is substantially the same as the thickness of the tread plate 10, that is, the vertical dimension.

  The step board 10 is accommodated in the interior of the second frame 25, that is, in a space surrounded by the second bottom plate portion 26 and the second side plate portion 27. Specifically, the tread plate 10 is in close contact with the second side plate portion 27 from the periphery in a state where the lower surface is placed on the upper surface of the second bottom plate portion 26, whereby the tread plate 10 moves in the second frame 25. Fixed to impossible.

  The load detection unit 24 is disposed between the first bottom plate portion 22 of the first frame 21 and the second bottom plate portion 26 of the second frame 25. In the present embodiment, a load cell 24 a is adopted as the load detection unit 24, and the load cell 24 a is installed on the first bottom plate part 22 of the first frame 21 and the second bottom plate part 26 of the second frame 25. It contacts the lower surface from below.

  That is, in the present embodiment, the second bottom plate portion 26 is disposed above the first bottom plate portion 22 with being supported by the load cell 24a. Thus, in the state where the second bottom plate portion 26 is supported by the load cell 24a, the upper end of the second side plate portion 27 and the upper surface of the tread plate 10 are flush with the road surface and the upper end of the first side plate portion 23. It is exposed to. Further, the downward load acting on the second bottom plate portion 26 is detected by the load cell 24a contacting the second bottom plate portion 26 from below, and is output to the lane server by the load cell 24a.

Next, the operation and processing of the toll collection system 1 provided with such a tread frame 20 will be described.
When a vehicle enters the passage of the toll collection system 1, the lane server detects the entry of the vehicle by first turning off the optical sensor of the first vehicle detector 2. At the same time, the vehicle passes over the tread board 10, and a pressing signal from the tread board 10 is output to the lane server.

  At this time, the lane server counts the number of axles based on the pressing signal of the tread board 10. In other words, the lane server counts the number of output of the pressing signal while the first vehicle detector 2 detects the entry of the vehicle as the number of axles of the vehicle. The lane server determines, for example, that it is a “normal vehicle” when the number of axles is “2”, and determines that it is a “large vehicle” when the number of axles is “3” or “4”. When the number of axles is “5” or more, it is determined that the vehicle is an “extra large vehicle”.

Further, the axle load of the vehicle acting on the tread plate 10 as the vehicle passes through the tread plate 10 is transmitted to the second bottom plate portion 26 of the second frame 25 as a downward load. At this time, the second side plate portion 27 of the second frame 25 and the first side plate portion 23 of the first frame 21 are in contact with each other so as to be slidable in the vertical direction, that is, relatively movable in the vertical direction. Axial weight acting on the tread plate 10 is not transmitted to the first frame 21 but transmitted only to the second bottom plate portion 26 of the second frame 25.
Thus, the load acting on the second bottom plate portion 26, that is, the axle load of the vehicle acting on the tread plate 10, is detected by the load cell 24a as the load detector 24, and is output to the lane server as axle load information.

The lane server calculates the total weight of the vehicle based on the axle load information of the load detector 24. That is, the lane server calculates the total weight of the vehicle by adding the peak value of the axle load information detected by the load detecting unit 24 while the first vehicle detector 2 detects the entry of the vehicle. .
If the lane server determines that the lane server is overloaded as a result of the total weight of the vehicle exceeding a predetermined threshold, the lane server outputs display information indicating that the lane server is overloaded to the roadside indicator 8, and the roadside indicator 8 displays the display information on the screen.

  Further, the first antenna 5 is activated when the first vehicle detector 2 detects the approach of the vehicle. The first antenna 5 communicates with the on-vehicle device of the vehicle, acquires vehicle specifying information stored in the IC card inserted into the on-vehicle device, and transmits it to the lane server. The lane server manages the vehicle specifying information in association with the axle load information.

  Next, when the vehicle travels and the optical sensor of the second vehicle detector 3 is in a light-shielded state, the lane server determines whether or not the vehicle specifying information is normal, and determines that it is normal The normal process is executed. That is, the lane server outputs an opening command to the start controller 7, and the start controller 7 opens the passage based on the open command. Further, the lane server outputs display information indicating that the passage is permitted to the roadside indicator 8, and the roadside indicator 8 displays the display information on the screen.

Then, when the traveling vehicle sets the light sensor of the third vehicle detector 4 in the light-shielded state, the lane server outputs a turn-off command to the road-side display 8, and based on this, the road-side display 8 turns off the screen. Further, when the vehicle passes through the irradiation range of the optical sensor of the third vehicle detector 4 and the optical sensor enters a light-transmitting state, the lane server outputs a closing command to the start controller 7, and the start controller 7 Based on the closing instruction, the blocking bar is lowered to close the passage. Thereafter, the second antenna 6 communicates with the vehicle-mounted device and writes the vehicle type information determined using the number of axles counted by the tread board 10 to the vehicle-mounted device.
On the other hand, when the lane server determines that the vehicle identification information or the like is abnormal, the lane server executes an abnormality process and maintains the closed state of the passage by the lane server.

  In the toll collection system 1 as described above, the load acting on the second frame 25 that accommodates the tread 10, that is, the axle load of the vehicle, is the first bottom plate portion 26 of the two frames and the first frame 21. It is detected by the load detection unit 24 between the bottom plate unit 22. As a result, while detecting the pressure of the vehicle and detecting the axle load can be performed separately by the tread board 10 and the load detector 24, the axle weight is detected simultaneously with the passage of the tread board 10 of the vehicle traveling in the passage. be able to.

That is, since the tread board 10 and the load detection unit 24 can be provided separately, for example, compared to the case where the function of the tread board 10 and the function of the load detection unit 24 are integrated, measurement of vehicle pressure and axle load is performed. Accuracy can be guaranteed.
Furthermore, since the vehicle traveling in the passage passes through the tread board 10 and at the same time on the load detection unit 24, it is possible to simultaneously acquire the pressure and axle load of the vehicle. It is possible to avoid the axle load being associated with the vehicle specifying information of the following vehicle. Therefore, it is possible to realize unified management of vehicle specifying information and axle load information.

  In the present embodiment, an example in which the load cell 24a is used as the load detection unit 24 has been described. However, for example, a pressure-sensitive sheet 24b may be employed instead of the load cell 24a. In this case, the pressure-sensitive sheet 24 b is disposed between the first bottom plate portion 22 and the second bottom plate portion 26 so as to be in close contact with the first bottom plate portion 22 and the second bottom plate portion 26. Thus, the downward load acting on the second bottom plate portion 26, that is, the axle load of the vehicle can be detected by the pressure sensitive sheet 24b. The axle load information of the vehicle detected by the pressure sensitive seat 24b is output to the lane server as described above.

As a modification of the first embodiment, for example, as shown in FIG. 3, the second frame 25 is composed of only the second bottom plate portion 26 and is embedded in the lower portion inside the tread plate 10, and the load detection portion 24 is felt. The pressure sheet 24b may be used.
That is, in this modification, the pressure-sensitive sheet 24b is disposed between the first bottom plate portion 22 of the first frame 21 and the lower surface of the tread plate 10, and the axle load of the vehicle acting on the tread plate 10 is the second frame. After the load is distributed by the second bottom plate portion 26 of 25, the pressure sensitive sheet 24b acts as a downward load from the entire lower surface of the tread plate 10.
Also in this case, as in the embodiment, it is possible to simultaneously detect the pressing of the vehicle by the tread board 10 and the axial weight by the pressure sensitive sheet 24b as the load detection unit 24.

  In this modification, another load detection unit 24 such as a load cell 24b may be employed instead of the pressure sensitive sheet 24b. In the first embodiment, a pressure sensitive sheet 24b may be adopted instead of the load cell 24b. In addition, any device that can detect a load may be adopted as the load detection unit 24.

Next, the tread frame 20 of the second embodiment will be described with reference to FIG.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The tread frame 20 of the second embodiment is different from the first embodiment in the configuration of the second frame 25 and the load detection unit 24.

That is, the second frame 25 of the second embodiment includes support leg portions 31 extending downward from both ends of the second bottom plate portion 26 on both sides in the vehicle traveling direction over the passage width direction. The lower end of the support leg 31 is placed on the first bottom plate part 22 of the first frame 21, whereby the second bottom plate part 26 of the second frame 25 passes through the support leg 31 and the first frame 21. It is set as the state supported by the space | interval above.
The support legs 31 may be provided not only at both ends of the second bottom plate portion 26 on both sides in the vehicle traveling direction but also at both ends of the second bottom plate portion 26 in the passage width direction. Further, the support leg portions 31 may be provided on both ends of the second bottom plate portion 26 on both sides in the vehicle traveling direction and on both ends in the passage width direction.
Furthermore, it is preferable that the second bottom plate portion 26 of the second frame 25 has a rigidity that can be deformed so as to bend downward by a load.

  In the second embodiment, a strain gauge 24 c is employed as the load detection unit 24. The strain gauge 24c is configured by, for example, forming a metal resistor in a meandering manner on an insulator, and can detect the amount of strain based on a change in electrical resistance due to deformation. The strain gauges 24c are integrally provided on the lower surface of the second bottom plate portion 26. For example, a plurality (four in this embodiment) are provided at intervals in the vehicle traveling direction. Thus, when the second bottom plate portion 26 is displaced downward due to the axle load of the vehicle that has acted on the tread plate 10, the strain gauge 24c detects the amount of strain based on the displacement.

  Here, the downward displacement of the second bottom plate portion 26 increases in accordance with the load acting downward on the second bottom plate portion 26, that is, the value of the axle load of the vehicle. Therefore, the amount of strain detected by the strain gauge 24c corresponds to the axle load of the vehicle, and the strain gauge 24c outputs this strain amount to the lane server as vehicle axle load information.

In the toll collection system 1 in which such a tread frame 20 is installed, the tread 10 detects the pressing of the vehicle when the vehicle passes the tread 10, and the second bottom plate of the second frame 25 through the tread 10. The axial weight acting on the portion 26 is detected by a strain gauge.
Therefore, as in the first embodiment, the detection of the pressing of the vehicle and the detection of the axle load can be performed separately by the tread plate 10 and the load detection unit 24, but simultaneously with the passage of the tread 10 of the vehicle traveling in the passage. Axial weight can be detected.

Next, the tread frame 20 according to the third embodiment will be described with reference to FIG.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The tread frame 20 of the third embodiment further includes a spacer 32, and the load detector 24 is provided on the spacer 32.

The spacer 32 is provided at both ends of the first bottom plate portion 22 and the second bottom plate portion 26 in the vehicle traveling direction in the space between the first bottom plate portion 22 of the first frame 21 and the second bottom plate portion 26 of the second frame 25. A pair is provided at corresponding locations. More specifically, the spacer 32 includes an upright plate portion 33 extending upward from both ends of the first bottom plate portion 22 in the vehicle traveling direction, and an inner side of the tread frame 20 from the upper end of the upright plate portion 33. In other words, the cross section is configured by a horizontal extending portion 34 that extends in the opposing direction of the pair of spacers 32 and on which the second bottom plate portion 26 of the second frame 25 is placed, and is orthogonal to the passage width direction. The shape is L-shaped.
The spacer 32 is configured such that when a load is applied downward to the horizontal extension portion 34, the horizontal extension portion 34 can be displaced downward with a connection portion with the standing plate portion 33 as a fulcrum. Yes.

  In the third embodiment, a strain gauge 24 c similar to that of the second embodiment is employed as the load detection unit 24. The strain gauge 24c is provided on the lower surface of the horizontal extending portion 34 of the spacer 32, and the amount of strain of the horizontal extending portion 34 when the lower portion of the horizontal extending portion 34 is displaced downward is used as an axis. Output to the lane server as heavy information.

In the toll collection system 1 in which such a tread frame 20 is installed, the tread 10 detects the pressing of the vehicle when the vehicle passes the tread 10, and the second bottom plate 26 of the tread 10 and the second frame 25 is detected. The axial weight acting on the horizontal extending portion 34 of the spacer 32 through is detected by the strain gauge 24c.
Therefore, while detecting the pressure of the vehicle and the detection of the axle load separately by the tread plate 10 and the load detection unit 24, the axle load is detected simultaneously with the passage of the tread plate 10 of the vehicle traveling in the passage. Can do.

As mentioned above, although embodiment of this invention was described in detail, unless it deviates from the technical idea of this invention, it is not limited to these, A some design change etc. are possible.
For example, in the embodiment, the second frame 25 includes the second bottom plate portion 26 and the second side plate portion 27 so that the tread plate 10 can be firmly held. The tread plate 10 may be mounted on the second frame 25 only by the portion 26. In this case, for example, the tread plate 10 may be fixed to the second bottom plate portion 26 using a bolt or the like.

DESCRIPTION OF SYMBOLS 1 Toll collection system 2 1st vehicle detector 3 2nd vehicle detector 4 3rd vehicle detector 5 1st antenna 6 2nd antenna 7 Start control machine 8 Roadside indicator 10 Tread plate 11 Tread plate main body 11a ridge 12 Cavity 13 Contact-type sensor 20 Tread frame 21 First frame 22 First bottom plate 23 First side plate 24 Load detector 24a Load cell 24b Pressure sensitive sheet 24c Strain gauge 25 Second frame 26 Second bottom plate 27 Second side plate 31 Support legs Part 32 Spacer 33 Standing plate part 34 Horizontally extending part 50 Recessed part

Claims (6)

A tread frame for installing a tread for detecting the pressure of a vehicle traveling in a passage for passage processing of a toll facility for a vehicle in the aisle,
A first frame having a first bottom plate portion installed in a recess formed in the passage;
A second frame having a second bottom plate portion that is installed above the first bottom plate portion and fixes the tread;
A tread frame comprising: a load detecting unit which is disposed between the first bottom plate and the second bottom plate and detects a load acting on the second bottom plate.   2. The tread frame according to claim 1, wherein the load detection unit is a load cell or a pressure-sensitive sheet that is installed on the first bottom plate and is in contact with the second bottom plate from above. The second frame further includes a support leg portion that supports the second bottom plate portion with a space above the first bottom plate portion,
The tread frame according to claim 1, wherein the load detecting unit is a strain gauge provided on the second bottom plate. A spacer for supporting the second bottom plate portion above the first bottom plate portion with an interval;
The tread frame according to claim 1, wherein the load detection unit is a strain gauge provided on the spacer. The first frame is
A first side plate portion rising from the outer periphery of the first bottom plate portion;
The second frame is
5. The apparatus according to claim 1, further comprising a second side plate portion that rises from an outer periphery of the second bottom plate portion, fixes the tread plate from the periphery, and abuts against the first side plate portion. The tread frame described in 1. A toll collection system that is installed in a paid facility for vehicles and collects a usage fee of the toll facility,
A tread frame according to any one of claims 1 to 5,
A toll collection system comprising: a tread that is fixed to the second frame of the tread frame and that detects pressing of the vehicle by a short circuit of a contact body provided therein.

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