JP4964099B2 - Contact force measuring device for sliding plate - Google Patents

Description

  The present invention relates to a contact force measuring device for a sliding plate that measures a contact force acting between a sliding plate of a current collector and a train line with which the sliding plate contacts.

  Currently, traveling at 360km / h is being promoted on the Shinkansen. In this case, the current pantograph for the Shinkansen has insufficient current collection performance, and this is the only multi-division with sufficient current collection performance in this speed range. The use of slab boats is considered to be promising. In order to monitor the current collection state of the pantograph, the method of measuring the contact force between the pantograph sliding plate and the overhead trolley wire is effective because the quality of the current collection state can be judged quantitatively. . Conventionally, a method has been developed for measuring the contact force between a sliding plate and a trolley wire of such a multi-segmented sliding boat body.

  A conventional contact force measuring device for a sliding plate includes an elastic body that fixes the lower ends of a pair of springs that support both ends of the sliding plate piece of the multi-part sliding plate boat body, and when a load is applied to the sliding plate piece. A pair of elastic body support members that support the elastic body inside both ends so that the elastic body can be elastically deformed, and an optical fiber that expands due to elastic deformation of the elastic body and changes the wavelength of reflected light. (For example, refer to Patent Document 1). In such a conventional sliding plate contact force measuring device, a gap is formed between the lower end of the spring and the boat frame, and an elastic body and an elastic support member are arranged in the gap.

JP 2006-067710 A

  In such a conventional sliding plate contact force measuring device, there is little space formed in the hull frame to accommodate the spring. For this reason, it is difficult to secure an additional space between the lower ends of the pair of springs and the boat body frame and arrange the elastic body and the elastic body support member in this space. In addition, in the conventional sliding plate contact force measuring device, when remodeling an existing multi-segmented sliding plate hull so that the contact force can be measured, an elastic body and an elastic body support member are attached to the hull frame. Large scale remodeling is required. For this reason, there is a problem that remodeling takes time, and the work becomes complicated and the cost increases. Further, the conventional contact force measuring device for a sliding plate has a structure in which both ends of the sliding plate piece are supported by the upper ends of a pair of springs, and a load acting on the pair of springs is transmitted to an elastic body. Body strain is measured by optical fiber. For this reason, since one measurement part is provided for two springs, only one measurement result is output from the measurement part, and it is impossible to determine which of the loads acting on the two springs is the measurement result. There is a point.

  An object of the present invention is to provide a sliding plate contact force measuring device that can be easily installed in a narrow space, can be easily modified, and can improve measurement accuracy.

The present invention solves the above-mentioned problems by the solving means described below.
In addition, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this embodiment.
As shown in FIGS. 5 to 7 and 12, the invention of claim 1 acts between the sliding plate (12) of the current collector (4) and the train line (1) with which the sliding plate contacts. a contact force measuring device of the sliding plate to measure the contact force (C), detachably mounted between the elastic support portion (22) for elastically supporting the contact strip of the sliding plate Toko, this contact strip is the contact force measuring device of the sliding plate and a; (32 27) (24) and the load receiving portion (26) receiving the contact force from the load detection unit for detecting the contact force acting on the load receiving portion .

According to a second aspect of the present invention, in the sliding plate contact force measuring device according to the first aspect, the load receiving portion forms a gap (Δ) between the sliding plate and the elastic support portion. And a mounting part (26b) that is detachably mounted between them, and a contact part (25) on the sliding plate side in a state supported by the mounting part, and from the contact part on the sliding plate side, receiving the contact force is a contact force measuring device of the sliding plate, characterized in that it comprises a contact portion of the load receiving portion to elastically deform (26a).

According to a third aspect of the present invention, in the contact force measuring apparatus for a sliding plate according to the second aspect, the load detection unit includes a strain sensor that detects distortion of the contact portion on the load receiving unit side. It is a contact force measuring device for a sliding plate .

According to a fourth aspect of the present invention, there is provided the sliding plate contact force measuring device according to the second aspect, wherein the load receiving portion is supported by the mounting portion as shown in FIGS. A thermal displacement scheduled portion (26q) that is thermally displaced in substantially the same environment as the contact portion on the portion side, and in order to calibrate the detection result of the load detection portion, heat for detecting the thermal displacement of the thermal displacement scheduled portion A sliding plate contact force measuring device comprising a displacement detector (43; 44).

According to a fifth aspect of the present invention, in the contact force measuring apparatus for a sliding plate according to the fourth aspect, the load detection unit includes a measurement strain sensor that detects a distortion of the contact portion on the load receiving side, and The displacement detection unit is a sliding plate contact force measurement device comprising a calibration strain sensor for detecting the strain of the thermal displacement scheduled portion in order to calibrate the detection result of the measurement strain sensor.

According to a sixth aspect of the present invention, in the contact force measuring device for a sliding plate according to the fourth or fifth aspect, the thermal displacement detector changes the wavelength of the reflected light according to the distortion of the thermal displacement scheduled portion. An apparatus for measuring contact force of a sliding plate, comprising: an optical fiber type strain gauge, or an electrical resistance type strain gauge whose electrical resistance changes according to the strain of the thermal displacement scheduled portion.

According to a seventh aspect of the present invention, in the sliding plate contact force measuring device according to any one of the fourth to sixth aspects, as shown in FIG. 10 and FIG. A contact force measuring device for a sliding plate, wherein the contact force measuring device is arranged in the vicinity of the contact portion on the load receiving portion side with a space from the contact portion on the load receiving portion side.

  According to an eighth aspect of the present invention, in the contact force measuring apparatus for a sliding plate according to the second aspect, as shown in FIG. 15, the load receiving portion is supported by the mounting portion on the side of the load receiving portion. A temperature detector (46) that includes a thermal displacement scheduled portion (26q) that is thermally displaced in substantially the same environment as the contact portion, and detects the temperature of the thermal displacement scheduled portion in order to calibrate the detection result of the load detector. A contact force measuring device for a sliding plate, comprising:

A ninth aspect of the present invention is the sliding plate contact force measuring device according to the eighth aspect , wherein the load detecting unit includes a measuring strain sensor for detecting strain of the contact portion on the load receiving portion side, and the temperature The detecting unit includes a calibration temperature sensor that detects a temperature of the thermal displacement scheduled part in order to calibrate the detection result of the measurement strain sensor.

A tenth aspect of the present invention is the sliding plate contact force measuring device according to the eighth or ninth aspect , wherein the temperature detecting unit is a thermocouple whose electric signal changes according to the temperature of the thermal displacement scheduled portion. A contact force measuring device for a sliding plate.

The invention of claim 11 is the contact force measuring device of the sliding plate according to any one of claims 8 to claim 10, as shown in FIG. 14, the thermal displacement scheduled portion, the load receiving portion A contact force measuring device for a sliding plate, wherein the contact force measuring device is arranged in the vicinity of the contact portion on the load receiving portion side with a space from the contact portion on the side.

The invention of claim 12 is the contact force measuring device of the sliding plate according to any one of claims 4 to claim 7, as shown in FIGS. 10 and 14, the load receiving unit, the thermal A contact force measuring device for a sliding plate, comprising a passage portion (26s) for allowing a transmission line (30B; 35B) connected to a displacement detecting portion to pass between the sliding plate and the elastic support portion. .

According to a thirteenth aspect of the present invention, in the contact force measuring apparatus for a sliding plate according to any one of the eighth to eleventh aspects, as shown in FIG. A contact force measuring device for a sliding plate, comprising a passing portion for allowing a transmission line (48) to be connected to pass between the sliding plate and the elastic support portion.

According to a fourteenth aspect of the present invention, in the sliding plate contact force measuring device according to any one of the second to thirteenth aspects, as shown in FIGS. A contact force of the sliding plate, comprising a passage portion (26r) for passing the transmission line (30; 30A ; 35A ) connected to the load detecting portion between the sliding plate and the elastic support portion. It is a measuring device.

A fifteenth aspect of the present invention is the sliding plate contact force measuring device according to any one of the twelfth to fourteenth aspects of the present invention, as shown in FIGS. 10 and 15, wherein the passage portion is the transmission line. Is an optical fiber (30; 30A; 30B), and this optical fiber is passed through so that the optical fiber is wired in a straight line.

According to a sixteenth aspect of the present invention, in the sliding plate contact force measuring device according to any one of the third to fifteenth aspects, the load detection unit is responsive to distortion of the contact portion on the load receiving side. An optical fiber strain gauge in which the wavelength of reflected light changes, or an electrical resistance strain gauge in which the electrical resistance changes in accordance with the strain of the contact portion on the load receiving portion side. It is a contact force measuring device.

The invention according to claim 17 is the sliding plate contact force measuring device according to any one of claims 2 to 16 , wherein the contact portion on the sliding plate side is from the sliding plate to the load receiving portion. A contact force measuring device for a sliding plate, characterized in that it is formed of a heat insulating material that blocks heat conduction.
The invention according to claim 18 is the sliding plate contact force measuring device according to any one of claims 1 to 17 , wherein the sliding plate is a divided sliding plate, and the elastic support The portion is a sliding plate contact force measuring device characterized by being a spring that elastically supports the sliding plate piece (12a) of the sliding plate.

  According to the present invention, it can be easily installed in a narrow space, can be easily remodeled, and the measurement accuracy can be improved.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic view of a current collector provided with a contact force measuring device for a sliding plate according to a first embodiment of the present invention, FIG. 1 (A) is a side view, and FIG. 1 (B) is a front view. It is.
An overhead line 1 shown in FIG. 1 is a train line installed over the track, and is supported at a support point at a predetermined interval. The trolley wire 1 a is an electric wire that contacts the sliding plate 12 of the current collector 4, and supplies a load current to the vehicle 2 when the sliding plate 12 contacts and moves. The vehicle 2 is an electric vehicle such as a train or an electric locomotive, and is a railway vehicle such as a bullet train that travels at a high speed. The vehicle body 3 is a structure for loading and transporting passengers.

  The current collector 4 is a device for guiding electric power from the trolley wire 1 a to the vehicle 2, and includes a base frame 5, an insulator 6, a frame 7, a boat support portion 8, a current collector boat (hull) 9, and the like. It has. The frame 5 is a part that supports the frame 7, the insulator 6 is a member that electrically insulates between the vehicle body 3 and the frame 5, and the frame 7 is in the vertical direction while supporting the current collector boat 9. This is a link mechanism that can operate in The boat support portion 8 is a mechanism portion that pushes up the current collecting boat 9 horizontally with respect to the overhead wire 1 and provides a buffering action by a spring (not shown). The boat support portion 8 is pushed upward by a spring (not shown) provided in the frame 5. Raised. The current collector 4 shown in FIG. 1 is a single-arm pantograph that is asymmetric with respect to the traveling direction of the vehicle 2 and can be used in one or both directions.

FIG. 2 is a cross-sectional view showing a part of the current collecting boat whose contact force is measured by the contact force measuring device for a sliding plate according to the first embodiment of the present invention. 3 is a cross-sectional view showing a state cut along line III-III in FIG. FIG. 4 is a cross-sectional view showing a state cut along line IV-IV in FIG.
The current collector boat 9 shown in FIGS. 1 and 2 is a member that attaches and supports the sliding plates 12 and 13, and is generally an elongated metal member that extends in a direction perpendicular to the trolley wire 1a. As shown in FIGS. 1B and 2, the current collector boat 9 is a multi-divided sliding boat body in which the sliding plate 12 is divided into a plurality of pieces, and divides the sliding plate 12 into a number of sliding plate pieces 12 a. Thus, the pantograph current collector boat for Shinkansen (high speed) has improved the follow-up performance to the overhead wire 1 by reducing the mass of the sliding plate 12 that is vibrated in contact with the overhead wire 1. The current collector boat 9 includes a rectifying unit 10 shown in FIGS. 3 and 4, a horn 11 shown in FIG. 1B, sliding plates 12 and 13, an elastic unit 14 shown in FIGS. 2 to 4, and a conductive unit. 15, the hull frame 16, the slide portion 17 shown in FIG. 3, the connecting portion 18, the interval adjusting portion 19, the guide portion 20 shown in FIGS. 3 and 4, the stopper portion 21, and the portion shown in FIG. 4. The elastic support part 22 and the fixing | fixed part 23 are provided.

  The rectifying unit 10 shown in FIGS. 3 and 4 is a member for adjusting the lift generated by the airflow. The rectifying unit 10 is detachable from the boat body frame 16 by a fixing member (not shown), and the cross-sectional shape of the current collecting boat 9 can be changed to an arbitrary shape by exchanging it with an optimum shape.

  The horn 11 shown in FIG. 1B is a trolley wire in a direction different from the traveling direction of the vehicle 2 out of the two trolley wires 1a intersecting above the branch device when the vehicle 2 passes through the branch device. It is a member for preventing interruption to 1a. As shown in FIG. 1 (B), the horn 11 is a metal member that protrudes from both ends in the length direction of the current collector boat 9 and has a curved tip.

  1-4 is a member in contact with the trolley wire 1a, and is a main sliding plate attached to the central portion of the current collector boat 9 as shown in FIG. 1 (B). The sliding plate 12 shown in FIGS. 1-4 is a sliding plate divided | segmented into plurality, and is comprised by many sliding plate pieces 12a divided | segmented into predetermined length. The sliding plate 12 is a plate member made of metal or carbon that extends in a direction orthogonal to the traveling direction of the vehicle 2, and is a component that forms part of the current collector boat 9. The sliding plate 12 is required to have a certain mechanical strength, conductivity, wear resistance, and the like because a large current flows through contact movement (sliding) with the trolley wire 1a. As shown in FIGS. 1B and 2, the sliding plate 12 includes a plurality of sliding plate pieces 12 a.

  The ground plate piece 12 a is a small ground plate piece constituting the ground plate 12. The strip pieces 12a are arranged in a line along the length direction of the current collector boat 9 and come into contact with the trolley wire 1a. The sliding piece 12a can move independently in the vertical direction following the fluctuation of the contact force C acting between the trolley wire 1a and the vertical displacement of the trolley wire 1a. Prevents melting damage due to the heat of the arc of arc generated between the two. As shown in FIG. 3, the sliding plate piece 12a is formed with a female screw portion 12b penetrating the sliding plate piece 12a.

  A sliding plate 13 shown in FIGS. 1B and 2 is a member that contacts the trolley wire 1 a and is an auxiliary sliding plate attached to both ends of the current collector boat 9. Since the sliding plate 13 is less frequently contacted with the trolley wire 1a than the sliding plate 12, weight reduction is more important than wear resistance, and it is a metal plate-like member such as aluminum. The sliding plate 13 is fixed to the hull frame 16 by a fixing member such as a bolt (not shown).

  The elastic part 14 shown in FIGS. 2 to 4 is a member that is elastically deformed in accordance with the movement of the sliding plate 12 in the vertical direction. The elastic portion 14 is a non-conductive long plate-like flexible member (sheet-like member) having arc resistance, and the lower surface of the strip piece 12 a is in contact with the upper surface of the elastic portion 14. The sliding plate piece 12a is supported by one piece. When the sliding plate piece 12a moves in the vertical direction following the displacement of the trolley wire 1a, the elastic portion 14 bends according to the vertical movement of the sliding plate piece 12a. As shown in FIG. 3, through holes 14 a are formed in the elastic portion 14 at a predetermined interval.

  The conductive part 15 shown in FIGS. 2 to 4 is a member for securing a current path. The conductive portion 15 is a conductive metal such as a flexible copper plate that can be elastically deformed together with the elastic portion 14, and has a shorter width than the elastic portion 14 as shown in FIGS. 3 and 4. As shown in FIG. 3, a through hole 15 a is formed in the conductive portion 15, and the lower surface of the elastic portion 14 is in contact with the upper surface of the conductive portion 15 as shown in FIGS. 3 and 4. As shown in FIG. 3, the upper surface of the slide portion 17 is in contact with the lower surface of. As shown in FIG. 4, the conductive portion 15 has a slight gap Δ between the lower surface of the conductive portion 15 and the upper surface of the load receiving portion 26 of the contact force measuring device 24.

  The boat body frame 16 shown in FIGS. 2 to 4 is a member constituting the main body portion of the current collecting boat 9. As shown in FIGS. 3 and 4, the hull frame 16 is a groove-shaped frame material having a substantially U-shaped cross-section, and an opening is formed in the upper portion of the hull frame 16. Inside the frame 16, a slide part 17, a guide part 20, a stopper part 21, an elastic support part 22 and the like are accommodated. The rectification unit 10 is attached to the outer side surfaces (front and rear surfaces) of the boat body frame 16, and the boat support unit 8 shown in FIG. 1 is attached to the lower surface of the boat body frame 16. As shown in FIG. 2, thick plate-like portions having a predetermined length and no grooves are formed at both ends of the hull frame 16, and a slip plate 13 is attached to the upper surface of the thick plate-like portion. Yes.

  The slide portion 17 shown in FIG. 3 is a member that moves together with the sliding plate 12. The slide portion 17 is a hollow frame member having a quadrangular cross section, and can slide in the vertical direction integrally with the sliding plate 12, the elastic portion 14, and the conductive portion 15. As shown in FIG. 2, a plurality of slide parts 17 are arranged at predetermined intervals in the length direction of the hull frame 16, and a through hole 17 a is formed on the upper part of the slide part 17 as shown in FIG. 3. Is formed. When the sliding plate piece 12a moves in the vertical direction following the displacement of the trolley wire 1a, the sliding portion 17 slides in the vertical direction in accordance with the vertical movement of the sliding plate piece 12a.

  The connecting portion 18 is a member that connects the sliding plate piece 12 a and the slide portion 17, and slides so that the elastic portion 14 and the conductive portion 15 are sandwiched between the lower surface of the sliding plate piece 12 a and the upper surface of the sliding portion 17. The slide portion 17 is fixed to the plate piece 12a. The connecting portion 18 includes a fixing bolt 18a that passes through the through holes 15a, 17a, and 19a and has a tip portion screwed into the female screw portion 12b of the sliding plate piece 12a, and a washer that is sandwiched between the fixing bolt 18a and the slide portion 17. 18b and the like.

  The interval adjusting portion 19 is a member that adjusts the interval between the sliding piece 12a and the slide portion 17, and is an annular collar or the like that is fitted into the through hole 14a of the elastic portion 14. A through hole 19a through which the fixing bolt 18a passes is formed in the interval adjusting portion 19. The space | interval adjustment part 19 is adjusting between the space | interval between these by being pinched | interposed between the sliding board piece 12a and the slide part 17. FIG.

  The guide part 20 is a member that guides the slide part 17 so as to be movable. The guide portion 20 is a long plate-like member attached to face the inner side surface of the boat body frame 16 and is in contact with the side surface of the slide portion 17 so that the slide portion 17 can move. The guide portion 20 allows the slide portion 17 to move in the vertical direction, but functions as a stopper portion that regulates the horizontal movement of the slide portion 17, and the slide portion 17 moves up and down following the displacement of the trolley wire 1 a. The slide portion 17 is guided so as to move in the direction.

  The stopper portion 21 is a member that regulates the amount of movement of the slide portion 17 in the vertical direction. The stopper portion 21 is a plate-like member having a substantially U-shaped cross section, passes through the inside of the slide portion 17, and is fixed to a predetermined height with respect to the inner bottom surface of the boat body frame 16. The stopper portion 21 defines the upper limit of the movable range of the slide portion 17 by bringing the lower bottom surface of the stopper portion 21 into contact with the lower upper surface of the slide portion 17, and the upper end surface of the stopper portion 21 and the slide portion 17. The lower limit of the movable range of the slide portion 17 is defined by contacting the upper lower surface of the slide portion 17. The stopper portion 21 prevents the sliding portion 17 from moving upward together with the sliding plate pieces 12 a and the elastic portion 14 by the elastic force of the elastic support portion 22, and preventing these members from dropping from the hull frame 16. As shown in FIG. 4, a through hole 21 a is formed in the stopper portion 21.

  The elastic support portion 22 shown in FIG. 4 is a member that elastically supports the sliding plate piece 12a. The elastic support portion 22 elastically supports the sliding plate piece 12a and is an elastic body (biasing member) such as a compression coil spring that receives compression. As shown in FIG. 2, the elastic support portions 22 are arranged between the slide portions 17, and the same number of the elastic support portions 22 as the sliding plate pieces 12 a are arranged corresponding to the respective sliding plate pieces 12 a. As shown in FIG. 4, the elastic support portion 22 has an upper end passing through the through hole 21 a of the stopper portion 21 and contacting the lower surface of the mounting portion 26 b, and the lower end of the elastic support portion 22 is the hull frame 16. It is attached to the bottom upper surface of the. As shown in FIG. 4, the elastic support portion 22 supports the sliding piece 12a through the elastic body 14, the conductive portion 15, the sliding plate side contact portion 25, the receiving portion side contact portion 26a, and the mounting portion 26b. 1 expands and contracts according to the contact force C acting between the sliding piece 12a and the trolley wire 1a shown in FIG.

  The fixing portion 23 shown in FIG. 4 is a member that fixes the elastic support portion 22 to the boat body frame 16. The fixing portion 23 is attached to the inner bottom surface of the boat body frame 16 and holds the lower end portion of the elastic support portion 22 between the holding plate 23a and the holding plate 23a. A holding plate 23b that holds down the lower end of the support portion 22, a fixing bolt 23c that fixes the holding plate 23a and the holding plate 23b to the hull frame 16, a washer 23d that is sandwiched between the fixing bolt 23c and the holding plate 23b, etc. It has. The holding portion 23 a is formed of a non-conductive material in order to electrically insulate between the elastic support portion 22 and the boat body frame 16 so that no current flows through the elastic support portion 22.

FIG. 5 is a sectional view of a contact force measuring apparatus for a sliding plate according to the first embodiment of the present invention. FIG. 6 is a plan view of a sliding plate contact force measuring apparatus according to the first embodiment of the present invention.
The contact force measuring device 24 shown in FIGS. 5 and 6 is a device that measures the contact force C acting between the sliding piece 12a and the trolley wire 1a. The contact force measuring device 24 determines, for example, whether or not the current collecting state of the current collecting device 4 is good and monitors the current collecting state, and thus the contact force C acting between the sliding piece 12a and the trolley wire 1a. Measure. For example, when the vehicle 2 shown in FIG. 1 is an electric track comprehensive test vehicle that inspects the state of the train line while traveling on the track, the contact force measuring device 24 is mounted on the vehicle 2 and is collected in the traveling state. 4 is measured every predetermined time or continuously. The contact force measuring device 24 includes a sliding plate side contact portion 25 shown in FIG. 5, a load receiving portion 26 shown in FIGS. 5 and 6, a load detection portion 27, a light irradiation portion 28 shown in FIG. 2, the optical fiber 30 shown in FIGS. 2, 5, and 6, the load calculation unit 31 shown in FIG. 2, and the like.

  The sliding plate side contact portion 25 shown in FIG. 5 is a portion that contacts the load receiving portion 26. The sliding plate side contact portion 25 is attached to the lower surface of the conductive portion 15, and is a protruding portion that protrudes downward from the lower surface of the conductive portion 15 and presses the receiving portion side contact portion 26 a of the load receiving portion 26. The sliding plate side contact portion 25 is affixed to the lower surface of the conductive portion 15 of the existing multi-segmented sliding plate boat body with a screw or an adhesive, and the tip portion that contacts the receiving portion side contact portion 26a is spherical. Is formed. A plurality of the sliding plate side contact portions 25 are arranged on the lower surface of the conductive portion 15 corresponding to each sliding plate piece 12a, and the receiving portion side contact portion 26a is added according to the contact force C acting on the sliding plate piece 12a. Press. The sliding plate side contact portion 25 is formed of a heat insulating material such as plastic or ceramic that blocks heat conduction from each sliding plate piece 12a of the sliding plate 12 to the receiving portion side contact portion 26a.

  The load receiving portion 26 is a portion that receives the contact force C from the sliding plate piece 12 a and is detachably mounted between the sliding plate piece 12 a and the elastic support portion 22. The load receiving portion 26 is formed by forming a gap Δ between the lower surface of the conductive portion 15 and the upper end portion of the elastic support portion 22 without changing the structure of the existing multi-segmented sliding boat body to a large scale. Is sandwiched between them. As shown in FIGS. 5 and 6, the load receiving portion 26 includes a receiving portion side contact portion 26 a and a mounting portion 26 b.

  The receiving portion side contact portion 26a is a portion that receives a load from the sliding plate side contact portion 25 and elastically deforms. As shown in FIG. 5, the receiving portion side contact portion 26a is in contact with the sand plate side contact portion 25 while being supported by the mounting portion 26b, and bends according to the contact force C acting on the slide plate piece 12a. Mu As shown in FIGS. 5 and 6, the receiving portion side contact portion 26 a is a metal piece for load measurement that constitutes a long plate-like beam portion in which both ends in the length direction are fixedly supported. As shown, it is arranged in parallel with the strip piece 12a. Generally, when the load detection unit 27 is a strain sensor, the output signal increases and the S / N ratio increases as the strain increases. However, the stress increases as the strain increases, so that the load detection unit 27 can be easily operated. It becomes easy to destroy. For this reason, it is preferable to use, for example, a spring steel material having a high permissible stress so that the receiving portion side contact portion 26a does not break even if the strain when receiving a load is large.

  The mounting portion 26b shown in FIG. 5 is a portion that is detachably mounted between the sliding plate piece 12a and the elastic support portion 22 so as to form a gap Δ. The mounting portion 26b is fitted into and mounted on the upper end portion of the elastic support portion 22 of the existing multi-divided sliding board hull. As shown in FIG. 5, the mounting portion 26b includes an upper holding portion 26c and a lower holding portion 26d, and both ends of the receiving portion side contact portion 26a are provided between the upper holding portion 26c and the lower holding portion 26d. The part is sandwiched. The upper holding portion 26 c shown in FIG. 5 is a member that is supported by the upper end portion of the elastic support portion 22. As shown in FIG. 6, the upper holding portion 26 c is an annular member, and as shown in FIG. 5, the upper holding portion 26 c protrudes from the outer peripheral portion of the upper holding portion 26 c and is supported by the upper end portion of the elastic support portion 22. An outer flange portion 26e and a male screw portion 26f formed on the outer peripheral portion of the upper holding portion 26c are provided. The lower holding portion 26d is a member that supports the receiving portion side contact portion 26a. The lower holding portion 26d is an annular member having an outer appearance like the upper holding portion 26c, and protrudes from the inner peripheral portion of the lower holding portion 26d to support the lower surfaces of both end portions of the receiving portion side contact portion 26a. A flange portion 26g and a female screw portion 26h formed on the inner peripheral portion of the lower holding portion 26d and meshing with the male screw portion 26f of the upper holding portion 26c are provided.

  The load detector 27 shown in FIGS. 5 and 6 is a part that detects a contact force C acting on the load receiver 26. The load detection unit 27 includes a strain sensor that detects the strain of the receiving portion side contact portion 26a, and an optical fiber type strain gauge in which the wavelength of reflected light changes according to the strain of the receiving portion side contact portion 26a. I have. The load detection unit 27 is, for example, a sensing probe (detector) having a characteristic that the wavelength of reflected light changes according to the amount of strain generated in the receiving unit side contact unit 26a, and reflects light having a specific wavelength. One load detection unit 27 is arranged corresponding to each of the sliding plate pieces 12a, changes the central wavelength of the reflected light, and reflects only light having a specific wavelength different for each of the sliding plate pieces 12a. . As shown in FIGS. 5 and 6, the load detector 27 is disposed on the center line of the receiving portion side contact portion 26a on the center line of the receiving portion side contact portion 26a. It is attached to the bottom surface with adhesive.

  The light irradiation part 28 shown in FIG. 2 is a part which irradiates light. The light irradiation unit 28 is a light source that makes incident light incident from one end of the optical fiber 30, and irradiates light that passes through each load detection unit 27 toward the light detection unit 29.

  The light detection unit 29 is a part that detects reflected light reflected from the load detection unit 27. The light detection unit 29 is a light detector that detects reflected light that is incident from one end of the optical fiber 30, reflected by the load detection unit 27, and emitted from the other end of the optical fiber 30. A change in wavelength between the reflected light when the distortion occurs in 26a and the incident light irradiated by the light irradiation unit 28 is detected. The light detection unit 29 functions as a photoelectric conversion unit that converts an optical signal into an electrical signal, and outputs an electrical signal corresponding to the detected reflected light to the load calculation unit 31.

  The optical fiber 30 is a member that transmits light. The optical fiber 30 is an optical communication transmission line (transmission line) used when transmitting information by an optical signal. As shown in FIG. 2, the light irradiation unit 28, each load detection unit 27, and the light detection unit 29 are used. Are connected in series. Since the optical fiber 30 is difficult to bend with a small curvature, as shown in FIGS. 5 and 6, the optical fiber 30 is wired in a straight line parallel to the receiving portion side contact portion 26a, and a plurality of receiving portion side contact portions 26a. Can be measured simultaneously by the load detector 27. When the upper lower surface of the slide portion 17 and the upper end surface of the stopper portion 21 shown in FIG. 3 are in contact with each other and the elastic support portion 22 shown in FIG. 4 and FIG. The outer diameter is selected so as not to be caught in the gap.

  The load calculation unit 31 shown in FIG. 2 is a part that calculates the contact force C acting on the sliding plate piece 12a. The load calculation unit 31 calculates a contact force C acting between the sliding piece 12a and the trolley wire 1a based on the detection result of the light detection unit 29. The load calculation unit 31 calculates a distortion amount for each receiving unit side contact unit 26a based on the light detection signal output from the light detection unit 29, and adds a contact force C acting on each of the sliding plate pieces 12a to add a sliding plate. The contact force acting on the whole 12 is calculated. The load calculation unit 31 is in contact with the trolley wire 1a based on the output signal of the light detection unit 29 because the load detection units 27 having different center wavelengths of reflected light are connected in series by a single optical fiber 30. The sliding plate pieces 12a can be specified individually.

Next, the attachment method of the contact-force measuring apparatus of the sliding board which concerns on 1st Embodiment of this invention is demonstrated.
The rectifying unit 10 is removed from the boat body frame 16 shown in FIGS. 3 and 4, and a gap Δ is formed between the upper end surface of the boat frame 16 and the lower surface of the conductive unit 15. In this state, as shown in FIG. 3, since the lower upper surface of the slide portion 17 and the lower lower surface of the stopper portion 21 are in contact with each other, the sliding plate 12, the elastic portion 14, the conductive portion 15, and the slide portion 17 are moved upward. Movement is restricted and stops at the upper limit position. As shown in FIG. 4, only the lower surface of the conductive portion 15 is mounted on the upper end portion of the elastic support portion 22, and the upper end portion of the elastic support portion 22 and the lower portion of the conductive portion 15 are not connected. For this reason, when the upper end portion of the elastic support portion 22 is pressed to compress the elastic support portion 22 while the conductive portion 15 is stopped at the upper limit position, the upper end portion of the elastic support portion 22 and the lower surface of the conductive portion 15 are A gap Δ is formed between the two.

  In this state, the sliding plate side contact portion 25 is positioned at the center of the upper end portion of the elastic support portion 22, and the sliding plate side contact portion 25 is attached to the lower surface of the conductive portion 15. Next, the load receiving portion 26 is inserted between the upper end portion of the elastic support portion 22 and the lower surface of the conductive portion 15, and the outer peripheral portion of the lower holding portion 26 d of the load receiving portion 26 is connected to the upper end portion of the elastic support portion 22. The upper support portion 26c is mounted on the upper end portion of the elastic support portion 22 and the load receiving portion 26 is attached. As shown in FIG. 5, the optical fibers 30 connected to both ends of the load detection unit 27 are passed through the gaps between the filaments of the elastic support unit 22 so as to be parallel to the sliding plate 12. Wiring. Next, when the pressing of the upper end portion of the elastic support portion 22 is released, the elastic support portion 22 expands, the sliding plate side contact portion 25 and the receiving portion side contact portion 26a come into contact with each other, and the conductive portion 15 and the elastic support portion 22 are brought into contact. The load receiving portion 26 is disposed between the two. By repeating the same operation, the load receiving portions 26 are attached to all the elastic support portions 22, and all the load detection portions 27 are connected in series by the single optical fiber 30. Finally, the light irradiation unit 28 is connected to one end of the optical fiber 30, the light detection unit 29 is connected to the other end of the optical fiber 30, and the light detection unit 29 and the load calculation unit 31 are signaled. Connect with wires.

Next, the operation of the contact force measuring apparatus for a sliding plate according to the first embodiment of the present invention will be described.
As shown in FIG. 1, when the vehicle 2 travels in the direction A, the sliding plate 12 moves in contact with the trolley wire 1a. The trolley wire 1a is provided with a zigzag deviation (trolley wire deviation) so that the trolley wire 1a and the sliding plate 12 do not frictionally contact at the same location. For this reason, when the vehicle 2 moves in the A direction, each sliding plate piece 12a comes into contact with the trolley wire 1a, and a contact force C acts between the trolley wire 1a and the sliding plate piece 12a. As shown in FIG. 5, when a contact force C acts between the trolley wire 1a and the sliding plate piece 12a, the sliding plate side contact portion 25 and the receiving portion side contact portion 26a come into contact with each other. For this reason, the contact force C is transmitted from the sliding plate piece 12a to the elastic support portion 22 through the elastic portion 14, the conductive portion 15 and the load receiving portion 26, and this contact force C acts on the elastic support portion 22 so that the elastic support portion. 22 compresses. When the contact force C is transmitted from the sliding plate piece 12a to the receiving portion side contact portion 26a via the sliding plate side contact portion 25, the sliding plate side contact portion 25 presses the receiving portion side contact portion 26a and receives the receiving portion side. The center portion of the contact portion 26a bends downward. As a result, the load detection unit 27 also bends integrally with the receiving unit side contact unit 26a, the light passing through the optical fiber 30 is reflected by the load detection unit 27, and the distortion amount (deflection amount) of the receiving unit side contact unit 26a. ), The wavelength of the reflected light changes. When the reflected light reflected by the load detecting unit 27 is detected by the light detecting unit 29 shown in FIG. 2, the light detecting unit 29 outputs an electric signal corresponding to the reflected light to the load calculating unit 31, and the sliding piece 12a. The load calculation unit 31 calculates the magnitude of the contact force C acting on the.

The sliding plate contact force measuring apparatus according to the first embodiment of the present invention has the following effects.
(1) In the first embodiment, a load receiving portion 26 is detachably mounted between the sliding plate 12 and the elastic support portion 22, and the load receiving portion 26 receives a contact force C from the sliding plate 12. The load detector 27 detects the contact force C acting on the load receiver 26. For this reason, without changing the basic structure of the existing multi-piece sliding board boat body on a large scale, a small space is secured between the elastic support part 22 and the sliding board 12 and the load receiving part 26 is easily mounted. The contact force C acting on the load receiving portion 26 can be easily detected. In addition, since the sliding plate 12 is not directly supported by the load detection unit 27 or the elastic support unit 22 and the load detection unit 27 are integrated, the sliding plate 12 is elastic even if the load detection unit 27 is damaged. It is supported by the support part 22 and can maintain the safety of the current collector boat 9 even after breakage. Similarly, since the sliding plate 12 is supported by the elastic support portion 22 even if the load receiving portion 26 is damaged, the function of the current collecting boat 9 is not impaired and the safety of the current collecting boat 9 is maintained. The boat 9 can be used continuously. Further, unlike the conventional multi-divided sliding board boat body, since the sliding board piece 12a and the elastic support part 22 can be easily separated without being connected to each other, the load receiving part 26 is interposed between them. Can be easily installed in a short time.

(2) In the first embodiment, the sliding plate 12 is a divided sliding plate, and the elastic support portion 22 that elastically supports the sliding plate piece 12a is a spring. Therefore, the contact force C acting on the sliding plate piece 12a can be detected for each sliding plate piece 12a, and the sliding plate piece 12a on which the contact force C is applied among the plurality of sliding plate pieces 12a can be easily obtained. Can be identified. Further, even in the case of a multi-divided sliding board hull having almost no space inside, the load receiving part 26 can be mounted in a slight space between the sliding board piece 12 a and the elastic support part 22. As a result, since it is not necessary to install the contact force measuring device 24 outside the current collecting boat 9, it is possible to prevent the aerodynamic characteristics from deteriorating without changing the basic outer shape of the current collecting boat 9. Further, since the small and light load receiving portion 26 and the load detecting portion 27 are inserted and attached between the sliding plate piece 12a and the elastic support portion 22, the spring constant of the elastic support portion 22 does not change greatly, and the current collection It can prevent that the performance as the apparatus 4 falls. Furthermore, unlike a structure in which one measuring unit is provided for two springs as in the conventional contact force measuring device for a sliding plate, one measuring unit is provided for one spring. Yes. Therefore, it is possible to clearly determine and measure which spring is acting on the load, and it is possible to accurately measure the contact force C acting on each of the sliding plate pieces 12a.

(3) In the first embodiment, a mounting portion 26b is detachably mounted between the sliding plate 12 and the elastic support portion 22 so as to form a gap Δ, and the mounting portion 26b. In this state, the sanding plate side contact portion 25 and the receiving portion side contact portion 26a are in contact with each other, and the receiving portion side contact portion 26a is elastically deformed by receiving a contact force C from the sliding plate side contact portion 25. For this reason, while being able to ensure easily a small space above the elastic support part 22 of the existing multi-segmented slab boat body in a short period of time, the load receiving part can be used by effectively utilizing the limited internal space. 26 can be installed, and space saving can be achieved. Further, a simple modification such as forming the sliding plate side contact portion 25 on the sliding plate 12 side and mounting the mounting portion 26b on the elastic support portion 22 is sufficient, and the structure and function of the elastic support portion 22 are not changed. The contact force C can be measured while using the elastic support portion 22.

(4) In the first embodiment, the load detection unit 27 includes a strain sensor that detects the strain of the receiving portion side contact portion 26a. For this reason, it is possible to easily detect the contact force C acting on the sliding piece 12a by detecting the distortion of the receiving portion side contact portion 26a.

(5) In the first embodiment, the load detection unit 27 includes an optical fiber strain gauge in which the wavelength of the reflected light changes according to the strain of the receiving unit side contact unit 26a. Therefore, the contact force C acting on the sliding plate piece 12a can be measured with high accuracy at a location where a large current flows, such as the current collector boat 9, without being affected by electrical noise. Further, the strain at a plurality of points can be easily measured with one optical fiber 30, and the wiring work of the optical fiber 30 is not time-consuming, and the wiring work can be greatly simplified. Furthermore, since the optical fiber 30 is an insulator, the optical fiber 30 can be easily drawn into the vehicle 2 through the insulator 6 from a high voltage portion such as the current collector 4.

(Second Embodiment)
FIG. 7 is a sectional view of a contact force measuring apparatus for a sliding plate according to a second embodiment of the present invention. In the following, the same parts as those shown in FIG. 5 are denoted by the same reference numerals and detailed description thereof is omitted.
The load detection unit 32 illustrated in FIG. 7 is a part that detects a contact force C acting on the load receiving unit 26. The load detection unit 32 includes a strain sensor that detects the strain of the receiving portion side contact portion 26a, and includes an electric resistance type strain gauge that changes in electrical resistance in accordance with the strain of the receiving portion side contact portion 26a. . The load detection unit 32 changes its electric resistance value according to the amount of strain generated in the receiving unit side contact unit 26a. One load detector 32 is arranged corresponding to each of the sliding plate pieces 12a, and is arranged on the center line of the receiving portion side contact portion 26a and at the central portion of the receiving portion side contact portion 26a. It is attached to the lower surface of the receiving portion side contact portion 26a by an adhesive or the like.

  The power supply unit 33 is a part that supplies power to the load detection unit 32. The power supply unit 33 is connected in series with the load detection unit 32, and one power supply unit 33 is arranged for each load detection unit 32 or one for all the load detection units 32. The power supply unit 33 is, for example, a DC power source that passes a DC current through an electric resistance type strain gauge of the load detection unit 32 or an AC power source that passes an AC current.

  The energization state detection unit 34 is a part that detects the energization state of the load detection unit 32, and is arranged one by one corresponding to each load detection unit 32. The energization state detection unit 34 detects, for example, a current value flowing through an electric resistance type strain gauge of the load detection unit 32, and calculates a load using an electric signal corresponding to the detected current value as energization state information (current value information). To the unit 36.

  The signal line 35 is a member that transmits an electrical signal. The signal line 35 is an electric wire (transmission line) through which a current flows, and the power supply unit 33, the load detection unit 32, and the energization state detection unit 34 are connected in series by a single electric wire.

  The load calculation part 36 is a part which calculates the contact force C which acts on the sliding piece 12a. The load calculation unit 36 calculates a contact force C acting between the sliding plate 12 and the trolley wire 1a based on the detection result of the energization state detection unit 34. The load calculation unit 36 calculates the distortion amount of each receiving portion side contact portion 26a based on the electrical signal output from the energized state detection portion 34, and calculates the contact force C acting on each sliding plate piece 12a. The load calculation unit 36 can calculate the amount of distortion of the receiving portion side contact portion 26a of each load detection unit 32, and the sliding plate piece that is in contact with the trolley wire 1a based on the output signal of each energization state detection unit 34. 12a can be specified individually.

The sliding plate contact force measuring apparatus according to the second embodiment of the present invention has the following effects in addition to the effects of the first embodiment.
In the second embodiment, the load detection unit 32 includes an electrical resistance type strain gauge whose electrical resistance changes according to the strain of the receiving portion side contact portion 26a. For this reason, the contact force C acting on the sliding plate piece 12a can be measured by the inexpensive load detection unit 32 as compared with the optical fiber type strain gauge.

(Third embodiment)
FIG. 8: is sectional drawing which abbreviate | omits and shows a part of current collection boat from which contact force is measured by the contact-force measuring apparatus of the sliding board which concerns on 3rd Embodiment of this invention. FIG. 9 is a perspective view of the assembled state of the sliding plate contact force measuring apparatus according to the third embodiment of the present invention. FIG. 10 is an exploded perspective view of a contact force measuring device for a sliding plate according to a third embodiment of the present invention. FIG. 11 is a plan view of a sliding plate contact force measuring apparatus according to a third embodiment of the present invention. 12 is a cross-sectional view showing a state cut along line XII-XII in FIG. 13 is a cross-sectional view showing a state cut along line XIII-XIII in FIG. In the following, the same parts as those shown in FIGS.

  The contact force measuring device 24 shown in FIGS. 8 to 13 is applied to the sliding plate side contact portion 25, the load receiving portion 26, the load detecting portion 27, the light irradiation portion 28, the light detecting portion 29 and the like shown in FIG. In addition, optical fibers 30A and 30B shown in FIG. 8, a load calculation unit 31, a thermal displacement detection unit 43 shown in FIGS. 10, 11 and 13, and the like are provided. As shown in FIG. 10, the load receiving portion 26 includes a receiving portion side contact portion 26a, a mounting portion 26b, a thermal displacement scheduled portion 26q, passing portions 26r and 26s, and the like. The mounting portion 26b shown in FIGS. 10, 12, and 13 includes an upper holding portion 26c, a lower holding portion 26d, an intermediate holding portion 26k, and the like. As shown in FIG. The receiving portion side contact portion 26a, the thermal displacement scheduled portion 26q, and both end portions of the intermediate holding portion 26k are sandwiched between the side holding portion 26d.

  The upper holding portion 26c shown in FIGS. 9 to 13 is an annular member, and includes an outer flange portion 26e, a male screw portion 26f, a positioning portion 26i and the like as shown in FIGS. . 10, 12, and 13 is a portion that meshes with the female screw portion 26 h of the lower holding portion 26 d, so that the intermediate holding portion 26 k can be attached to and detached from the upper holding portion 26 c as shown in FIG. 10. The intermediate holding portion 26k is cut out with a width slightly larger than the width. The positioning part 26i shown in FIGS. 9 and 10 is a part for positioning the intermediate holding part 26k at a predetermined position of the upper holding part 26c. The positioning portion 26i is a concave groove for sandwiching and pressing both ends of the intermediate holding portion 26k between the upper holding portion 26c and the lower holding portion 26d, and this intermediate holding portion 26k is fitted into the intermediate holding portion 26k. A width slightly wider than the width of the portion 26k is formed on the lower surface of the outer flange portion 26e.

The lower holding portion 26d shown in FIGS. 9, 10, 12, and 13 is a member that supports the intermediate holding portion 26k. The lower holding portion 26d is an annular member as shown in FIG. 10, and includes an internal thread portion 26h shown in FIGS. 10, 12, and 13, and a fitting portion shown in FIGS. 9, 10, and 13. 26j and the like. The female screw portion 26h is a portion that meshes with the male screw portion 26f of the upper holding portion 26c, and is formed on the inner peripheral portion of the lower holding portion 26d. Fitting portion 26j is a portion fitting portion T ₁ of the fastening tool T shown in FIG. 9 is fitted. Fitting portion 26j, when loosening clamping and a female screw portion 26h of the male screw portion 26f and the upper retaining portion 26c of the lower holding part 26 d, concave fitting section T ₁ convex fastening tool T is fitted It is a groove.

  The intermediate holding portion 26k shown in FIGS. 10, 12, and 13 is a member that supports the receiving portion side contact portion 26a and the thermal displacement scheduled portion 26q. As shown in FIG. 10, the intermediate holding portion 26k is sandwiched between the upper holding portion 26c and the lower holding portion 26d while supporting the receiving portion side contact portion 26a and the thermal displacement scheduled portion 26q. Held by. The intermediate holding part 26k includes support parts 26m and 26n, a fitting part 26p, and the like.

  The support part 26m shown in FIG. 10 is a part which supports the both ends of the receiving part side contact part 26a, respectively. The support portion 26m is a concave groove formed slightly wider than the width of both ends of the receiving portion side contact portion 26a. Both ends of the receiving portion side contact portion 26a are formed on the support portion 26m by an adhesive or the like. It is fixed. The support part 26m positions the receiving part side contact part 26a at a predetermined position by fitting both ends of the receiving part side contact part 26a. The support portion 26n is a portion that supports both ends of the thermal displacement scheduled portion 26q. The support portion 26n is a concave groove formed slightly wider than the width of both end portions of the thermal displacement planned portion 26q. Both end portions of the heat displacement planned portion 26q are fixed to the support portion 26n with an adhesive or the like. ing. The support portion 26n positions the thermal displacement planned portion 26q at a predetermined position by fitting both ends of the thermal displacement planned portion 26q. The support portions 26m and 26n are formed on the upper surface of the fitting portion 26p so that when the receiving portion side contact portion 26a and the thermal displacement scheduled portion 26q are supported, they form a minute gap and are arranged in parallel. Has been.

  The fitting portion 26p is a portion that is fitted to the upper holding portion 26c and supported by the lower holding portion 26d. As shown in FIG. 9, the fitting part 26p is formed in a convex shape so as to be fitted with the positioning part 26i of the upper holding part 26c. The fitting portion 26p is sandwiched and pressed between the lower holding portion 26d and the upper holding portion 26c while being supported on the upper surface of the lower holding portion 26d.

  The thermal displacement scheduled portion 26q shown in FIGS. 10, 11, and 13 is a portion that undergoes thermal displacement under substantially the same environment as the receiving portion side contact portion 26a. As shown in FIGS. 11 and 13, the thermal displacement scheduled portion 26q is arranged in the vicinity of the receiving portion side contact portion 26a with a space from the receiving portion side contact portion 26a while being supported by the mounting portion 26b. ing. The thermal displacement scheduled portion 26q has the same thickness as the receiving portion side contact portion 26a, but is formed with a slightly narrow width and a slightly short length. The thermal displacement scheduled portion 26q expands and contracts (thermal displacement) under substantially the same temperature environment as the receiving portion side contact portion 26a. Similar to the receiving portion side contact portion 26a, the thermal displacement scheduled portion 26q is a metal piece for thermal displacement measurement that constitutes a long plate-like beam portion in which both ends in the length direction are fixedly supported. As shown, it is arranged in parallel with the strip piece 12a. The thermal displacement scheduled portion 26q is made of the same material as the receiving portion side contact portion 26a, and it is preferable to use, for example, a spring steel material or the like for the thermal displacement scheduled portion 26q.

  9 and 10 is a portion that allows the optical fiber 30A connected to the load detection unit 27 to pass between each sliding plate piece 12a of the sliding plate 12 and the elastic support portion 22, and the passing portion. Reference numeral 26 s denotes a portion through which the optical fiber 30 </ b> B connected to the thermal displacement detector 43 is passed between each sliding plate piece 12 a of the sliding plate 12 and the elastic support portion 22. As shown in FIG. 8, the passing portions 26r and 26s pass the optical fibers 30A and 30B so that the optical fibers 30A and 30B are wired in a straight line. As shown in FIG. 10, the passing portions 26r and 26s are grooves formed on the upper surface of the fitting portion 26p of the intermediate holding portion 26k, and the optical fibers 30A and 30B can pass through the optical fibers 30A and 30B. The width and depth of the groove are slightly larger than the wire diameter. As shown in FIG. 8, the passing portions 26r and 26s are arranged so that the optical fibers 30A and 30B are wired between the conductive portion 15 and the elastic support portion 22, as shown in FIG. It forms above the lower surface of the fitting part 26p which contacts a part. The passage portions 26r and 26s are linearly formed in parallel from the end portions of the support portions 26m and 26n to the end portion of the fitting portion 26p.

  The light irradiation unit 28 shown in FIG. 8 makes incident light incident from one end of the optical fibers 30A and 30B, and irradiates light that passes through each load detection unit 27 and each thermal displacement detection unit 43 toward the light detection unit 29. To do. The light detection unit 29 detects reflected light reflected from the load detection unit 27 and the thermal displacement detection unit 43, respectively. The light detection unit 29 is incident from one end of the optical fibers 30A and 30B, is reflected by the load detection unit 27 and the thermal displacement detection unit 43, and detects reflected light emitted from the other end of the optical fibers 30A and 30B. Thus, a change in wavelength between the reflected light when the receiving portion side contact portion 26a and the thermal displacement scheduled portion 26q are distorted and the incident light irradiated by the light irradiation portion 28 is detected.

  The optical fibers 30A and 30B are members that transmit light, and are optical communication transmission paths (transmission lines) used when information is transmitted by optical signals. In the optical fiber 30A, the light irradiation unit 28, the load detection unit 27, and the light detection unit 29 are connected in series in one line, and the optical fiber 30B includes the light irradiation unit 28, the thermal displacement detection unit 43, and the light detection unit 29. One is connected in series. The optical fiber 30A is wired in a straight line in parallel with the receiving portion side contact portion 26a, and the load detecting portion 27 can simultaneously measure the distortion of the plurality of receiving portion side contact portions 26a. On the other hand, the optical fiber 30B is wired in a straight line in parallel with the thermal displacement planned portion 26q, and the thermal displacement detection unit 43 can simultaneously measure the distortion of the plurality of thermal displacement planned portions 26q. Unlike the optical fiber 30 shown in FIGS. 2 and 5, the optical fibers 30A and 30B are not wired so as to pass through the gaps between the filaments of the elastic support portion 22, but are elastically supported as shown in FIG. Wiring is performed between the upper end surface of the portion 22 and the lower surface of the conductive portion 15.

  Based on the detection result of the light detection unit 29, the load calculation unit 31 calculates the strain amount for each receiving portion side contact portion 26a, calculates the strain amount for each thermal displacement planned portion 26q, and each thermal displacement planned portion. The distortion amount of each receiving portion side contact portion 26a corresponding to 26q is temperature corrected. For example, based on the light detection signal output from the light detection unit 29, the load calculation unit 31 subtracts the strain amount of each thermal displacement scheduled portion 26 q from the strain amount of each receiving portion side contact portion 26 a and affects the thermal displacement. And the contact force C acting on each sliding plate piece 12a is calculated. The load calculation unit 31 adds the corrected contact force C acting on all the sliding plate pieces 12a, and calculates the contact force acting on the entire sliding plate 12.

  The thermal displacement detector 43 shown in FIGS. 10, 11, and 13 is a portion that detects the thermal displacement of the thermal displacement scheduled portion 26 q in order to calibrate the detection result of the load detector 27. In order to calibrate the detection result of the measurement (load measurement) strain sensor of the load detection unit 27, the thermal displacement detection unit 43 is a calibration (temperature compensation) strain sensor that detects the distortion of the thermal displacement scheduled unit 26q. I have. The thermal displacement detector 43 includes an optical fiber strain gauge in which the wavelength of the reflected light changes according to the strain of the thermal displacement scheduled portion 26q. The thermal displacement scheduled portion 26q is a sensing probe (detector) having a characteristic that the wavelength of reflected light changes according to the amount of distortion, for example, similarly to the load detecting portion 27, and reflects light having a specific wavelength. One thermal displacement detection unit 43 is disposed corresponding to each of the sliding plate pieces 12a, and only the light having a specific wavelength different for each of the sliding plate pieces 12a is reflected by changing the center wavelength of the reflected light. To do. The thermal displacement detector 43 is disposed on the center line of the planned thermal displacement 26q on the center line of the planned thermal displacement 26q, and is attached to the lower surface of the planned thermal displacement 26q with an adhesive or the like.

Next, a method for attaching a contact force measuring apparatus for a sliding plate according to a third embodiment of the present invention will be described.
As shown in FIG. 9, when assembling the load receiving portion 26, the load detecting portion 27 is attached to the lower surface of the receiving portion side contact portion 26 a shown in FIG. 10, and the optical fibers 30 </ b> A extending from both ends of the load detecting portion 27 are attached. It fits in the passage part 26r of the intermediate holding part 26k, and both ends of the receiving part side contact part 26a are attached to the support part 26m of the intermediate holding part 26k. Similarly, the thermal displacement detector 43 is attached to the lower surface of the thermal displacement detector 26q, and the optical fibers 30B extending from both ends of the thermal displacement detector 43 are fitted into the passage portion 26s of the intermediate holder 26k. Both end portions of 26q are attached to the support portion 26n of the intermediate holding portion 26k. In this state, when the intermediate holding portion 26k is mounted so as to cover the upper holding portion 26c, and the fitting portion 26p of the intermediate holding portion 26k is fitted into the positioning portion 26i of the upper holding portion 26c, the upper holding portion 26c is fixed. The intermediate holding part 26k is positioned. In a state where the upper holding portion 26c and the intermediate holding portion 26k are integrally held, the upper holding portion 26c and the intermediate holding portion 26k are mounted so as to cover the lower holding portion 26d, and the lower holding portion as shown in FIG. fitting a fitting portion T ₁ of the fastening tool T to 26d of the fitting portion 26j, rotating the fastening tool T around the axis. As a result, the male screw portion 26f of the upper holding portion 26c and the female screw portion 26h of the lower holding portion 26d shown in FIG. 10 are engaged with each other, and the upper holding portion 26c and the lower holding portion 26d are fastened. The intermediate holding portion 26k is sandwiched and held, and the load receiving portion 26 is assembled. As shown in FIG. 10, when disassembling the load receiving unit 26 is fitted to the fitting portion T ₁ of the fastening tool T in the fitting portion 26j of the lower retaining portion 26d shown in FIG. 9, the fastening tool T When rotating in the direction opposite to that during assembly, as shown in FIG. 10, the upper holding part 26c and the lower holding part 26d are separated, and the upper holding part 26c and the intermediate holding part 26k are separated.

  Next, when the upper end portion of the elastic support portion 22 is pressed to compress the elastic support portion 22 in a state where the conductive portion 15 shown in FIGS. 12 and 13 is stopped at the upper limit position, the upper end portion of the elastic support portion 22 is compressed. A gap Δ is formed between the conductive portion 15 and the lower surface of the conductive portion 15. In this state, the sliding plate side contact portion 25 is positioned at the center of the upper end portion of the elastic support portion 22, and the sliding plate side contact portion 25 is attached to the lower surface of the conductive portion 15. Next, the load receiving portion 26 is inserted between the upper end portion of the elastic support portion 22 and the lower surface of the conductive portion 15, and the outer peripheral portion of the lower holding portion 26 d of the load receiving portion 26 is connected to the upper end portion of the elastic support portion 22. The upper support portion 26 c is mounted on the upper end portion of the elastic support portion 22, and the load receiving portion 26 is attached to the elastic support portion 22. Next, as shown in FIG. 8, the optical fibers 30 </ b> A and 30 </ b> B respectively connected to both ends of the load detection unit 27 and the thermal displacement detection unit 43 are passed through the gap between the conductive unit 15 and the elastic support unit 22. Then, the optical fibers 30A and 30B are wired so as to be parallel to the sliding plate 12. When the pressing of the upper end portion of the elastic support portion 22 shown in FIGS. 12 and 13 is released, the elastic support portion 22 expands, the sliding plate side contact portion 25 and the receiving portion side contact portion 26a come into contact with each other, and the conductive portion 15 A load receiving portion 26 is disposed between the elastic support portion 22 and the elastic support portion 22. By repeating the same operation, the load receiving portions 26 are respectively attached to all the elastic support portions 22, and all the load detecting portions 27 and the thermal displacement detecting portions 43 are connected in series by one optical fiber 30A, 30B. Connected to. Finally, the light irradiation unit 28 is connected to one end of the optical fibers 30A and 30B, the light detection unit 29 is connected to the other end of the optical fibers 30A and 30B, and the light detection unit 29 and the load calculation unit are connected. 31 is connected by a signal line or the like.

Next, the operation of the contact force measuring apparatus for sliding plates according to the third embodiment of the present invention will be described.
As shown in FIGS. 12 and 13, when the contact force C is transmitted from the sliding plate piece 12a to the receiving portion side contact portion 26a via the sliding plate side contact portion 25, the sliding plate side contact portion 25 is moved to the receiving portion side. The center part of the receiving part side contact part 26a is bent downward by pressing the contact part 26a. As a result, the load detection unit 27 also bends integrally with the receiving unit side contact unit 26a, the light passing through the optical fiber 30A is reflected by the load detection unit 27, and the distortion amount (deflection amount) of the receiving unit side contact unit 26a. ), The wavelength of the reflected light changes. At this time, since the sliding plate side contact portion 25 is formed of a heat insulating material, heat conduction from the sliding plate piece 12a to the sliding plate side contact portion 25 is blocked. Further, as shown in FIGS. 11 and 13, since a minute gap is formed between the receiving portion side contact portion 26a and the thermal displacement scheduled portion 26q, the contact force C acts on the receiving portion side contact portion 26a. Even if the receiving portion side contact portion 26a is bent, the contact force C does not act on the thermal displacement scheduled portion 26q, and the thermal displacement scheduled portion 26q is not bent due to the influence of the contact force C.

  If the receiving part side contact part 26a is influenced by the surrounding temperature change, the receiving part side contact part 26a will thermally expand or shrink. As a result, not only the contact force C acting on the receiving portion side contact portion 26a but also the load (thermal load) generated by the thermal displacement of the receiving portion side contact portion 26a is detected by the load detecting portion 27. 27 detection results need to be corrected (temperature compensation). As shown in FIGS. 11 and 13, since the thermal displacement scheduled portion 26q is disposed in the vicinity of the receiving portion side contact portion 26a, the receiving portion side contact portion 26a and the thermal displacement scheduled portion 26q have substantially the same temperature. Influenced by change. Further, since the receiving portion side contact portion 26a and the planned thermal displacement portion 26q are arranged at a minute interval, the contact force C does not act on the thermal displacement planned portion 26q, and only the load caused by the thermal displacement acts. The load generated by this thermal displacement is detected by the thermal displacement detector 43. Based on the light detection signal output from the light detection unit 29 shown in FIG. 8, the load calculation unit 31 calculates the amount of distortion of the thermal displacement scheduled portion 26q caused by the thermal displacement, and the receiving portion caused by the contact force C and the thermal displacement. The load calculation unit 31 calculates the strain amount of the side contact portion 26a. Then, the load calculation unit 31 subtracts the strain amount of the thermal displacement scheduled portion 26q from the strain amount of the receiving portion side contact portion 26a to calculate the strain amount of the receiving portion side contact portion 26a caused only by the contact force C, The magnitude of the contact force C acting on the strip piece 12a is calculated.

In addition to the effects of the first to sixth embodiments, the sliding plate contact force measuring apparatus according to the third embodiment of the present invention has the following effects.
(1) In the third embodiment, the thermal displacement scheduled portion 26q is thermally displaced under substantially the same environment as the receiving portion side contact portion 26a while being supported by the mounting portion 26b, and the detection result of the load detecting portion 27 is corrected. In order to do this, the thermal displacement detector 43 detects the thermal displacement of the thermal displacement scheduled portion 26q. Therefore, the detection error of the load detection unit 27 caused by the thermal expansion or contraction of the receiving unit side contact unit 26a can be calibrated by the detection result of the thermal displacement detection unit 43, and the contact force C can be measured with high accuracy. .

(2) In the third embodiment, the calibration strain sensor detects the distortion of the thermal displacement scheduled portion 26q in order to calibrate the detection result of the measurement strain sensor that detects the strain of the receiving portion side contact portion 26a. For this reason, the detection error due to the thermal displacement of the measurement strain sensor can be temperature compensated by the detection result of the calibration strain sensor, and the measurement accuracy can be improved.

(3) In the third embodiment, the thermal displacement scheduled portion 26q is disposed in the vicinity of the receiving portion side contact portion 26a with a space from the receiving portion side contact portion 26a. For example, when an optical fiber strain gauge is attached only to the receiving portion side contact portion 26a to correct a detection error due to thermal displacement, the optical fibers 30A and 30B are attached to the receiving portion side contact portion 26a so as to be orthogonal to each other. There is a need. However, it is difficult to wire the optical fibers 30A and 30B so as to be orthogonal to each other in the narrow space in the boat body frame 16, and if the wiring is forced, bent portions are generated in the optical fibers 30A and 30B, causing detection errors. In the third embodiment, the receiving portion side contact portion 26a and the thermal displacement scheduled portion 26q are arranged with a minute gap therebetween. For this reason, the detection errors due to thermal displacement can be easily and accurately corrected by wiring the optical fibers 30A and 30B in parallel in a straight line. Further, only the load generated by the thermal displacement can be applied to the planned thermal displacement portion 26q without applying the contact force C applied to the receiving portion side contact portion 26a to the planned thermal displacement portion 26q. Furthermore, the thermal displacement scheduled portion 26q can be thermally displaced under substantially the same temperature environment as the receiving portion side contact portion 26a.

(4) In the third embodiment, the passage portion 26r passes the optical fiber 30A connected to the load detection portion 27 between the sliding piece 12a and the elastic support portion 22. In the third embodiment, the passage portion 26s passes the optical fiber 30B connected to the thermal displacement detection portion 43 between the sliding piece 12a and the elastic support portion 22. For example, in the first embodiment, as shown in FIGS. 2 and 5, it is necessary to pass the optical fibers 30 connected to both ends of the load detection unit 27 through the gaps between the filaments of the elastic support unit 22. In addition, the wiring work takes time and assembly work takes time. On the other hand, in the third embodiment, the optical fibers 30A and 30B are elastically supported by the sliding piece 12a by the passing portions 26r and 26s only by mounting the load receiving portion 26 between the conductive portion 15 and the elastic supporting portion 22. It is induced between the unit 22. For this reason, the wiring work of the optical fibers 30A and 30B is simplified, and the assembling work can be performed in a short time.

(5) In the third embodiment, the passage portions 26r and 26s pass through the optical fibers 30A and 30B so that the optical fibers 30A and 30B are wired in a straight line. For example, in the first embodiment, as shown in FIGS. 2 and 5, it is necessary to wire the optical fiber 30 so as to be parallel to the sliding plate 12, which takes time. On the other hand, in the third embodiment, the optical fibers 30A and 30B are wired linearly by the passing portions 26r and 26s, so that the wiring work can be performed in a short time.

(6) In the third embodiment, the sliding plate side contact portion 25 is formed of a heat insulating material that blocks heat conduction from the sliding plate piece 12 a to the load receiving portion 26. For this reason, the heat transmitted from the sliding plate piece 12a to the receiving portion side contact portion 26a is blocked by the sliding plate side contact portion 25, and the receiving portion side contact portion 26a is thermally deformed in a temperature environment different from that of the planned thermal displacement portion 26q. Can be prevented.

(Fourth embodiment)
FIG. 14 is a perspective view of a disassembled state of the contact force measuring device for a sliding plate according to the fourth embodiment of the present invention. In the following, the same parts as those shown in FIG. 7 will be assigned the same reference numerals and detailed description thereof will be omitted.
The contact force measuring device 24 shown in FIG. 14 includes a sliding plate side contact portion 25, a load receiving portion 26, a load detection portion 32, a power supply portion 33, an energization state detection portion 34, and the like shown in FIG. , Signal lines 35A and 35B shown in FIG. 14, a thermal displacement detector 44, a load calculator 45, and the like. The power supply unit 33 is a part that supplies power to the load detection unit 32 and the thermal displacement detection unit 44, and the energization state detection unit 34 is a part that detects the energization state of the load detection unit 32 and the thermal displacement detection unit 44. .

  The signal lines 35A and 35B are members that transmit electrical signals. The signal line 35A connects the power supply unit 33, the load detection unit 32, and the energization state detection unit 34 in series with one electric wire, and the signal line 35B The power supply unit 33, the thermal displacement detection unit 44, and the energization state detection unit 34 are connected in series by a single electric wire.

  The thermal displacement detector 44 is a part that detects the thermal displacement of the thermal displacement scheduled portion 26q in order to calibrate the detection result of the load detector 32. The thermal displacement detector 44 includes a strain sensor that detects the distortion of the thermal displacement scheduled portion 26q, and includes an electrical resistance strain gauge that changes in electrical resistance in accordance with the strain of the thermal displacement scheduled portion 26q. The thermal displacement detector 44 changes its electrical resistance value according to the amount of strain generated in the thermal displacement scheduled part 26q. One thermal displacement detection unit 44 is disposed corresponding to each of the sliding plate pieces 12a, is disposed on the center line of the thermal displacement planned portion 26q and in the center of the thermal displacement planned portion 26q, It is attached to the lower surface of the planned displacement portion 26q by an adhesive or the like.

  The load calculation part 45 is a part which calculates the contact force C which acts on the sliding piece 12a. The load calculation unit 45 calculates the strain amount for each receiving portion side contact portion 26a based on the detection result of the energization state detection unit 34, calculates the strain amount for each thermal displacement scheduled portion 26q, and each thermal displacement schedule. The distortion amount of each receiving portion side contact portion 26a corresponding to the portion 26q is corrected for temperature. For example, the load calculation unit 45 subtracts the strain amount of each thermal displacement planned portion 26q from the strain amount of each receiving portion side contact portion 26a based on the current state information output by the power state detection unit 34, and thereby based on the thermal displacement. The influence is corrected, and the contact force C acting on each sliding plate piece 12a is calculated. The load calculation unit 45 adds the corrected contact force C acting on all the sliding plate pieces 12a, and calculates the contact force acting on the entire sliding plate 12.

In addition to the effects of the third embodiment, the sliding plate contact force measuring apparatus according to the fourth embodiment of the present invention has the following effects.
In the fourth embodiment, the load detection unit 32 is provided with an electric resistance type strain gauge whose electric resistance changes according to the strain of the receiving portion side contact portion 26a, and the electric load according to the strain of the thermal displacement scheduled portion 26q. The thermal displacement detector 44 includes an electrical resistance strain gauge in which resistance changes. For this reason, compared with the case where an expensive optical fiber type strain gauge as in the third embodiment is used, the contact amount C can be easily measured by using an inexpensive electric resistance type strain gauge.

(Fifth embodiment)
FIG. 15 is a perspective view of a disassembled state of a contact force measuring device for a sliding plate according to a fifth embodiment of the present invention. In the following, the same parts as those shown in FIGS. 9 and 10 are denoted by the same reference numerals and detailed description thereof is omitted.
The contact force measuring device 24 shown in FIG. 15 includes a sliding plate side contact portion 25, a load receiving portion 26, a load detection portion 27, a light irradiation portion 28, a light detection portion 29, and the like shown in FIGS. In addition to the optical fiber 30 and the like, a temperature detection unit 46, an energization state detection unit 47, a signal line 48, a load calculation unit 49, and the like shown in FIG. 15 are provided.

  The temperature detector 46 is a part that detects the temperature of the thermal displacement scheduled part 26q in order to calibrate the detection result of the load detector 27. The temperature detector 46 detects the temperature of the thermal displacement scheduled portion 26q in order to calibrate the detection result of the measurement (load measurement) strain sensor of the load detector 27 that detects the strain of the receiving portion side contact portion 26a. A temperature sensor for calibration (for temperature compensation) is provided. The temperature detection unit 46 includes, for example, thermocouples whose electric signals change according to the temperature, and are arranged one by one corresponding to each sliding plate piece 12a. The temperature detection unit 46 is attached to the thermal displacement scheduled portion 26q with an adhesive or the like.

  The energization state detection unit 47 is a part that detects the energization state of the temperature detection unit 46, and is arranged one by one corresponding to each temperature detection unit 46. The energization state detection unit 47 detects, for example, an electromotive force generated according to a temperature difference between the thermocouple contacts of the temperature detection unit 46, and an electric signal according to the detected power is energized state information (electromotive force information). Is output to the load calculation unit 49.

  The signal line 48 is a member that transmits an electrical signal. The signal line 48 is an electric wire (transmission line) through which an electric current flows, and the temperature detection unit 46 and the energization state detection unit 47 are connected in series by a single electric wire.

  The load calculation part 49 is a part which calculates the contact force C which acts on the sliding piece 12a. The load calculation unit 49 calculates the amount of distortion for each receiving unit side contact unit 26a based on the detection result of the light detection unit 29, and for each thermal displacement scheduled unit 26q based on the detection result of the energization state detection unit 47. The distortion amount is calculated, and the distortion amount of each receiving portion side contact portion 26a corresponding to each thermal displacement scheduled portion 26q is temperature-corrected. For example, the load calculation unit 49 calculates the temperature of the thermal displacement scheduled portion 26q based on the energized state information output from the energized state detection unit 47, and the linear expansion coefficient, temperature, and reference length of the thermal displacement scheduled portion 26q. Based on the above, the distortion amount of the thermal displacement scheduled portion 26q is calculated. For example, the load calculation unit 49 subtracts the strain amount of each thermal displacement scheduled portion 26q from the strain amount of each receiving portion side contact portion 26a based on the light detection signal output from the light detection portion 29, and the influence of the thermal displacement. And the contact force C acting on each sliding plate piece 12a is calculated. The load calculation unit 49 adds the corrected contact force C acting on all the sliding plate pieces 12a, and calculates the contact force acting on the entire sliding plate 12.

In addition to the effects of the first to fourth embodiments, the sliding plate contact force measuring device according to the fifth embodiment of the present invention has the following effects.
(1) In the fifth embodiment, the thermal displacement scheduled portion 26q is thermally displaced under the same environment as the receiving portion side contact portion 26a while being supported by the mounting portion 26b, and the detection result of the load detecting portion 27 is calibrated. In order to do so, the temperature detector 46 detects the temperature of the thermal displacement scheduled portion 26q. For this reason, the detection error of the load detection unit 27 caused by the thermal expansion or contraction of the receiving unit side contact unit 26a can be calibrated by the detection result of the temperature detection unit 46, and the contact force C can be measured with high accuracy.

(2) In the fifth embodiment, the calibration temperature sensor detects the temperature of the thermal displacement scheduled portion 26q in order to calibrate the detection result of the measurement strain sensor. For this reason, without using an expensive thermal displacement detector 43 such as an optical fiber strain gauge as shown in FIGS. 9 to 12, an inexpensive temperature sensor such as a thermocouple is used, and a sliding plate is used. The contact force C acting on the piece 12a can be measured with high accuracy.

(Sixth embodiment)
FIG. 16 is a sectional view of a load measuring apparatus according to the sixth embodiment of the present invention.
16 is a member to which the load F acts, and is a movable member that can move in the vertical direction when the load F acts on the upper surface. The elastic support portion 51 is a member that elastically supports the load acting portion 50 and, like the elastic support portion 22 shown in FIGS. 2 to 8, a compression coil that supports the load acting portion 50 so as to be movable in the vertical direction. It is an elastic body (biasing member) such as a spring.

  The load measuring device 52 is a device that measures the load F acting on the load acting unit 50. Similar to the contact force measurement device 24 shown in FIG. 5, the load measurement device 52 includes an action portion side contact portion 53, a load receiving portion 54, a load detection portion 55, and the like. The action part side contact part 53 is a part in contact with the load receiving part 54 and is attached to the lower surface of the load action part 50, and projects downward from the lower surface of the load action part 50 to receive the load receiving part 54. It is a projection part which presses the side contact part 54a. The load receiving portion 54 is a portion that is detachably mounted between the load acting portion 50 and the elastic support portion 51 and receives a load F from the load acting portion 50. The load receiving portion 54 is a member similar to the load receiving portion 26 shown in FIGS. 5 and 6, and in FIG. 16, portions corresponding to the load receiving portion 54 side and corresponding portions on the load receiving portion 54 side are denoted by corresponding reference numerals. Detailed description will be omitted. The load detection unit 55 is a part that detects a load F acting on the load receiving unit 54. The load detector 55 is the same as the load detectors 27 and 32 shown in FIGS. 5 and 7, and an optical fiber strain gauge in which the wavelength of reflected light changes according to the strain of the receiving portion side contact portion 54a, or An electrical resistance type strain gauge whose electrical resistance changes according to the strain of the receiving portion side contact portion 54a is provided.

The load measuring device according to the sixth embodiment of the present invention has the following effects.
(1) In the sixth embodiment, a load receiving portion 54 is detachably mounted between the load acting portion 50 and the elastic support portion 51, and the load receiving portion 54 receives the load F from the load acting portion 50. The load detector 55 detects the load F acting on the load receiver 54. For this reason, a small space is ensured between the load action part 50 and the elastic support part 51 without modifying the basic structure for supporting the load action part 50 by the elastic support part 51 on a large scale. Is easily mounted, and the load F acting on the load receiving portion 54 can be easily detected. Further, since the load detecting unit 55 does not support the load acting unit 50 or the structure in which the elastic supporting unit 51 and the load detecting unit 55 are integrated, the load acting unit 50 is not damaged even if the load detecting unit 55 is damaged. It is supported by the elastic support part 51, and safety can be maintained. Similarly, even if the load receiving portion 54 is damaged, the load acting portion 50 is supported by the elastic support portion 51, so that safety can be maintained. Furthermore, since the load acting part 50 and the elastic support part 51 are structured such that they can be easily separated without being connected to each other, the load receiving part 54 can be easily mounted between them in a short time. .

(2) In the sixth embodiment, a mounting portion 54b is detachably mounted between the load acting portion 50 and the elastic support portion 51 so as to form a gap portion Δ. The action portion side contact portion 53 and the receiving portion side contact portion 54a are in contact with each other, and the receiving portion side contact portion 54a is elastically deformed by receiving a load F from the receiving portion side contact portion 54a. For this reason, a simple modification such as forming the action portion side contact portion 53 on the load acting portion 50 side and attaching the attachment portion 54b to the elastic support portion 51 is sufficient, and the structure and function of the elastic support portion 51 are not changed. Further, the load F can be measured while using the elastic support portion 51.

(Other embodiments)
The present invention is not limited to the embodiment described above, and various modifications or changes can be made as described below, and these are also within the scope of the present invention.
(1) In the first to fifth embodiments, the case where the vehicle 2 moves in the A direction has been described as an example. However, the present invention also applies to the case where the vehicle 2 moves in the direction opposite to the A direction. Can be applied. In the first to fifth embodiments, the current collecting device 4 has been described by taking a single arm pantograph as an example. However, other types of pantographs such as a rhombus pantograph and a wing pantograph, a third rail The present invention can also be applied to a system (third rail type) current collector or the like. Furthermore, in the first to fifth embodiments, the description has been given by taking an overhead train line as an example of the train line. However, the present invention is also applied to a third rail train line using a conductive rail. Can do.

(2) In the first to fifth embodiments, the case where the contact force measuring device 24 is mounted on a special vehicle such as an electric track general test vehicle and the contact force C is measured has been described as an example. The contact force measuring device 24 may be mounted on a passenger vehicle that transports passengers to measure the contact force. Moreover, although this 1st Embodiment-5th Embodiment gave and demonstrated as an example the case where the contact force C which acts on each sliding board piece 12a of the current collecting apparatus 4 provided with a multi-partitioned sliding board boat body was measured. It is not limited to this multi-divided ground board. For example, when measuring the contact force C acting on each sliding plate piece of a current collector boat having a structure in which the sliding plate is divided into a small number, or measuring the contact force acting on a single sliding plate of a normal current collector. The present invention can be applied to cases. Further, in the first to fifth embodiments, the case where the contact force C acting on the sliding plate piece 12a of the current collector 4 is measured has been described as an example, but the axle box of the railway vehicle is supported. The present invention can also be applied to a case where a load acting between the shaft spring and the carriage frame is measured.

(3) In the first to fifth embodiments, the optical fiber 30, 30A, 30B or the signal lines 35, 35A, 35B, 48 transmit the detection result from the current collector 4 into the vehicle. It is also possible to wirelessly transmit the detection result from the current collector 4 into the vehicle using a device or the like. Further, in the first to fifth embodiments, the upper holding portion 26c and the lower holding portion 26d are integrated by meshing the male screw portion 26f and the female screw portion 26h. Can be integrated. Further, in the first to sixth embodiments, the case where the elastic support portions 22 and 51 are springs has been described as an example, but the present invention also applies to a case where the elastic support portions 22 and 51 are elastic bodies such as rubber in addition to the springs. Can be applied.

(4) In the sixth embodiment, an example in which the strain of the receiving portion side contact portion 54a is measured by one load detection portion 55 having an optical fiber strain gauge or an electrical resistance strain gauge will be described. However, it is not limited to such a detection method. For example, as in the third to fifth embodiments, the thermal displacement scheduled portion 26q is arranged in parallel with the receiving portion side contact portion 54a with a small interval, and the distortion of the receiving portion side contact portion 54a is temperature corrected. You can also. In this case, the strain of the thermal displacement scheduled portion 26q can be detected by an optical fiber strain gauge, an electrical resistance strain gauge, or a thermocouple as in the third to fifth embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram of a current collector provided with the contact-force measuring apparatus of the sliding board which concerns on 1st Embodiment of this invention, (A) is a side view, (B) is a front view. It is sectional drawing which abbreviate | omits and shows a part of current collection boat by which contact force is measured by the contact-force measuring apparatus of the sliding board which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the state cut | disconnected by the III-III line of FIG. It is sectional drawing which shows the state cut | disconnected by the IV-IV line of FIG. It is sectional drawing of the contact-force measuring apparatus of the sliding board which concerns on 1st Embodiment of this invention. It is a top view of the contact-force measuring apparatus of the sliding board which concerns on 1st Embodiment of this invention. It is sectional drawing of the contact-force measuring apparatus of the sliding board which concerns on 2nd Embodiment of this invention. It is sectional drawing which abbreviate | omits and shows a part of current collection boat by which contact force is measured by the contact-force measuring apparatus of the sliding board which concerns on 3rd Embodiment of this invention. It is a perspective view of the assembly state of the contact-force measuring apparatus of the sliding board which concerns on 3rd Embodiment of this invention. It is a perspective view of the decomposition | disassembly state of the contact-force measuring apparatus of the sliding board which concerns on 3rd Embodiment of this invention. It is a top view of the contact-force measuring apparatus of the sliding board which concerns on 3rd Embodiment of this invention. It is sectional drawing which shows the state cut | disconnected by the XII-XII line | wire of FIG. 13 is a cross-sectional view showing a state cut along line XIII-XIII in FIG. It is a perspective view of the decomposition | disassembly state of the contact-force measuring apparatus of the sliding board which concerns on 4th Embodiment of this invention. It is a perspective view of the decomposition | disassembly state of the contact-force measuring apparatus of the sliding board which concerns on 5th Embodiment of this invention. It is sectional drawing of the load measuring apparatus which concerns on 6th Embodiment of this invention.

Explanation of symbols

1 overhead line (train line)
DESCRIPTION OF SYMBOLS 1a Trolley wire 2 Vehicle 4 Current collector 9 Current collector boat 12 Sliding plate 12a Sliding plate piece 22 Elastic support portion 24 Contact force measuring device 25 Sliding plate side contact portion 26 Load receiving portion 26a Receiving portion side contact portion 26b Mounting portion 26q Heat Planned displacement part 26r, 26s Passing part 27 Load detecting part 28 Light irradiating part 29 Light detecting part 30, 30A, 30B Optical fiber 31 Load calculating part 32 Load detecting part 33 Power supply part 34 Energized state detecting part 35, 35A, 35B Signal Wire 36 Load calculation unit 43, 44 Thermal displacement detection unit 45 Load calculation unit 46 Temperature detection unit 47 Current state detection unit 48 Signal line 49 Load calculation unit 50 Load application unit 51 Elastic support unit 52 Load measuring device 53 Operation unit side contact unit 54 Load receiving portion 54a Receiving portion side contact portion 54b Mounting portion 55 Load detecting portion C Contact force F Load Δ Gap portion

Claims (18)

A contact force measuring device for a sliding plate that measures a contact force that acts between a current collecting plate and a train line with which the sliding plate contacts,
A load receiving portion that is detachably mounted between the sliding plate and an elastic support portion that elastically supports the sliding plate, and receives the contact force from the sliding plate;
A load detector for detecting the contact force acting on the load receiver;
A contact force measuring device for a sliding plate. In the contact force measuring apparatus of the sliding plate of Claim 1,
The load receiver is
A mounting portion that is detachably mounted between the sliding plate and the elastic support portion so as to form a gap portion;
A contact portion on the side of the sliding plate that contacts the contact portion on the side of the sliding plate while being supported by the mounting portion, and a contact portion on the side of the load receiving portion that is elastically deformed by receiving the contact force from the contact portion on the side of the sliding plate.
A contact force measuring device for a sliding plate. In the contact force measuring apparatus of the sliding plate of Claim 2,
The load detection unit includes a strain sensor that detects distortion of the contact portion on the load receiving unit side;
A contact force measuring device for a sliding plate. In the contact force measuring apparatus of the sliding plate of Claim 2,
The load receiving portion includes a thermal displacement scheduled portion that is thermally displaced in substantially the same environment as the contact portion on the load receiving portion side in a state supported by the mounting portion,
In order to calibrate the detection result of the load detector, a thermal displacement detector that detects the thermal displacement of the thermal displacement scheduled portion is provided.
A contact force measuring device for a sliding plate. In the contact force measuring apparatus of the sliding plate of Claim 4,
The load detection unit includes a measurement strain sensor that detects distortion of the contact portion on the load receiving unit side,
The thermal displacement detection unit includes a calibration strain sensor for detecting the strain of the thermal displacement scheduled portion in order to calibrate the detection result of the measurement strain sensor;
A contact force measuring device for a sliding plate. In the contact-force measuring apparatus of the sliding plate of Claim 4 or Claim 5,
The thermal displacement detector is an optical fiber strain gauge in which the wavelength of reflected light changes according to the strain of the thermal displacement scheduled portion, or an electrical resistance type in which electrical resistance changes according to the strain of the thermal displacement scheduled portion. With a strain gauge of
A contact force measuring device for a sliding plate. In the contact-force measuring apparatus of the sliding board of any one of Claim 4 to Claim 6,
The thermal displacement scheduled portion is arranged in the vicinity of the contact portion on the load receiving portion side with a space from the contact portion on the load receiving portion side,
A contact force measuring device for a sliding plate. In the contact force measuring apparatus of the sliding plate of Claim 2,
The load receiving portion includes a thermal displacement scheduled portion that is thermally displaced in substantially the same environment as the contact portion on the load receiving portion side in a state supported by the mounting portion,
In order to calibrate the detection result of the load detection unit, a temperature detection unit for detecting the temperature of the thermal displacement scheduled part is provided.
A contact force measuring device for a sliding plate. In the contact force measuring apparatus of the sliding plate of Claim 8 ,
The load detection unit includes a measurement strain sensor that detects distortion of the contact portion on the load receiving unit side,
The temperature detection unit includes a calibration temperature sensor for detecting the temperature of the thermal displacement scheduled unit in order to calibrate the detection result of the measurement strain sensor;
A contact force measuring device for a sliding plate. In the contact-force measuring apparatus of the sliding plate of Claim 8 or Claim 9 ,
The temperature detection unit includes a thermocouple whose electric signal changes according to the temperature of the thermal displacement scheduled portion,
A contact force measuring device for a sliding plate. The contact force measuring device for a sliding plate according to any one of claims 8 to 10 ,
The thermal displacement schedule section to open the contact portion and the distance of the load receiving portion is disposed in the vicinity of the contact portion of the load receiving portion side,
A contact force measuring device for a sliding plate. In the contact force measuring apparatus of the sliding plate of any one of Claim 4 to Claim 7 ,
The load receiving portion includes a passage portion that allows a transmission line connected to the thermal displacement detection portion to pass between the sliding plate and the elastic support portion,
A contact force measuring device for a sliding plate. In the contact-force measuring apparatus of the sliding plate of any one of Claim 8 to Claim 11,
The load receiving portion includes a passage portion that allows a transmission line connected to the temperature detection portion to pass between the sliding plate and the elastic support portion,
A contact force measuring device for a sliding plate. In the contact-force measuring apparatus of the sliding plate of any one of Claim 2 to Claim 13 ,
The load receiving portion includes a passing portion that allows a transmission line connected to the load detecting portion to pass between the sliding plate and the elastic support portion;
A contact force measuring device for a sliding plate. In the contact force measuring apparatus of the sliding plate of any one of Claim 12 to Claim 14 ,
When the transmission line is an optical fiber, the passage portion passes the optical fiber so that the optical fiber is wired in a straight line.
A contact force measuring device for a sliding plate. In the contact-force measuring apparatus of the sliding board of any one of Claim 3 to Claim 15 ,
The load detection unit has an optical fiber strain gauge in which the wavelength of reflected light changes according to the strain of the contact portion on the load receiving portion side, or an electric resistance according to the strain of the contact portion on the load receiving portion side. Having a variable electrical resistance strain gauge,
A contact force measuring device for a sliding plate. In the contact-force measuring apparatus of the sliding plate of any one of Claim 2 to 16 ,
The contact portion on the sliding plate side is formed of a heat insulating material that blocks heat conduction from the sliding plate to the load receiving portion,
A contact force measuring device for a sliding plate. In the contact-force measuring apparatus of the sliding plate of any one of Claim 1- Claim 17 ,
The sliding board is a sliding board divided into a plurality of parts,
The elastic support portion is a spring that elastically supports a sliding piece of the sliding plate;
A contact force measuring device for a sliding plate.

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