CN115077770A - Coupler traction force monitoring sensor and coupler - Google Patents
Coupler traction force monitoring sensor and coupler Download PDFInfo
- Publication number
- CN115077770A CN115077770A CN202210867634.1A CN202210867634A CN115077770A CN 115077770 A CN115077770 A CN 115077770A CN 202210867634 A CN202210867634 A CN 202210867634A CN 115077770 A CN115077770 A CN 115077770A
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- China
- Prior art keywords
- coupler
- monitoring sensor
- traction force
- force monitoring
- pin
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 40
- 238000005259 measurement Methods 0.000 abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000005498 polishing Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract description 3
- 239000011888 foil Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000003137 locomotive effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000007790 scraping Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/13—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the tractive or propulsive power of vehicles
- G01L5/136—Force sensors associated with a vehicle traction coupling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G7/00—Details or accessories
Abstract
The invention discloses a coupler traction force monitoring sensor and a coupler, wherein the coupler traction force monitoring sensor comprises a tail pin, the side wall of the tail pin is provided with a counter bore, and one end of the tail pin is provided with a wire outlet; the strain gauge is arranged in the counter bore; the connecting wire, the connecting wire is located the terminal pin, and the one end electric connection foil gage of connecting wire, the other end of connecting wire stretches out from the outlet. The tail pin is used as a rigid body to directly bear the traction force transmitted by the vehicle and then fed back to the strain gauge, so that the service life can be prolonged. The coupler tail pin can directly replace a tail pin in the original coupler, is used as a part of the original coupler and a traction force sensor, does not change the mechanical structure of the original coupler, does not need additional steps of polishing, sticking, sealing glue and the like, and is convenient to install. The tail pin directly bears the traction force transmitted by the vehicle, and the stress point of the sensor can reflect the magnitude of the traction force of the car coupler more truly, so that the measured traction force data is more accurate, and the force measurement precision is improved.
Description
Technical Field
The invention relates to the field of train data monitoring, in particular to a coupler traction monitoring sensor and a coupler.
Background
The railway wagon coupler traction force is an important index for reflecting the performance of a railway vehicle, and an expected traction performance curve of the locomotive must be calculated firstly when the locomotive is designed; when in use, the locomotive traction performance curve actually and accurately measured must be provided for the operation department, so that the operation department can select the locomotive type according to the conditions of freight task transportation volume, line longitudinal section and the like and reasonably make the line traction fixed number and operation plan. Therefore, the traction values and the change rules of the locomotive and the vehicle are accurately measured; it is more important to ensure efficient and safe operation of the railway freight train.
The traction monitoring method for the coupler of the railway wagon in the prior art generally comprises the following steps: a resistance strain gauge is adhered to a coupler body of the car coupler to form a test bridge, and the test bridge is monitored after calibration on special instrument equipment. The monitoring mode is generally used for monitoring the stress of the coupler in a laboratory simulation manner so as to obtain experimental data, and has the defect that real-time monitoring in the vehicle carrying process is difficult to realize due to the facts that a strain gauge is fragile and short in service life, is very easy to damage when being installed on the coupler and is difficult to realize long-time stable monitoring. The structure of the coupler is changed by the mode of pasting the strain gauge, the coupler is complex to install, the strain gauge needs to be polished, pasted and sealed when being installed on the coupler, the process treatment after the patch installation and the patch installation, the bridge assembling mode for eliminating the influence of bending moment, static calibration and other work are troublesome and difficult, the coupler is a complex steel casting, the mechanical processing is mostly not carried out, the position of a force transmission point is not necessarily in the center of a coupler body, and the force measurement precision is not high.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the coupler traction force monitoring sensor and the coupler can monitor the traction force of the coupler in real time, and are convenient to install, long in service life and high in force measurement accuracy.
According to the embodiment of the first aspect of the invention, the coupler draft force monitoring sensor comprises: the side wall of the tail pin is provided with a counter bore, and one end of the tail pin is provided with a wire outlet; a strain gauge mounted within the counterbore; the connecting wire is located in the terminal pin, one end of the connecting wire is electrically connected with the strain gauge, and the other end of the connecting wire extends out of the wire outlet.
The coupler traction monitoring sensor provided by the embodiment of the invention at least has the following beneficial effects:
according to the embodiment of the invention, the counter bore is formed in the side wall of the tail pin, the strain gauge is arranged in the counter bore, the strain gauge can be effectively prevented from being damaged by external scraping, and the tail pin is used as a rigid body to directly bear the traction force transmitted by a vehicle and then is fed back to the strain gauge, so that the service life can be prolonged. The coupler tail pin can directly replace a tail pin in the original coupler, is used as a part of the original coupler and a traction force sensor, does not change the mechanical structure of the original coupler, does not need additional steps of polishing, sticking, sealing glue and the like, and is convenient to install. The tail pin directly bears the traction force transmitted by the vehicle, and the stress point of the sensor can reflect the magnitude of the traction force of the car coupler more truly, so that the measured traction force data is more accurate, and the force measurement precision is improved.
According to some embodiments of the invention, an anti-rotation stub shaft is fixed at one end of the tail pin and is used for being matched and plugged with a bearing plate of the coupler to prevent the tail pin from rotating.
According to some embodiments of the invention, the anti-rotation stub shaft is drum-shaped in cross-section.
According to some embodiments of the invention, the counter bores are two pairs and are respectively arranged on the side walls of the two ends of the terminal pin.
According to some embodiments of the invention, a through hole communicating the two counter bores is formed between the opposite counter bores, and the connecting line is located in the through hole and used for connecting the strain gauges at two ends of the through hole.
According to some embodiments of the invention, a wire groove for connecting the two counter bores is formed in the side wall of the terminal pin between the counter bores on the same side, and the connecting wire is positioned in the wire groove and used for connecting strain gauges at two ends of the wire groove.
According to some embodiments of the invention, the width of the wire chase is between 1.5mm and 2.5 mm.
According to some embodiments of the invention, the outer diameter of the counterbore is 21.5-22.5mm and the inner diameter of the counterbore is 19.5-20.5 mm.
The coupler according to the embodiment of the second aspect of the invention comprises a coupler body, and the coupler traction force monitoring sensor is arranged in the coupler body.
The coupler provided by the embodiment of the invention at least has the following beneficial effects:
according to the embodiment of the invention, the counter bore is formed in the side wall of the tail pin, the strain gauge is arranged in the counter bore, the strain gauge can be effectively prevented from being damaged by external scraping, and the tail pin is used as a rigid body to directly bear the traction force transmitted by a vehicle and then fed back to the strain gauge, so that the service life of the strain gauge can be prolonged. The coupler tail pin can directly replace a tail pin in the original coupler, is used as a part of the original coupler and a traction force sensor, does not change the mechanical structure of the original coupler, does not need additional steps of polishing, sticking, sealing glue and the like, and is convenient to install. The tail pin directly bears the traction force transmitted by the vehicle, and the stress point of the sensor can reflect the magnitude of the traction force of the car coupler more truly, so that the measured traction force data is more accurate, and the force measurement precision is improved.
According to some embodiments of the invention, the car coupler traction force monitoring device further comprises a bearing plate, wherein a clamping groove is formed in the bearing plate, and the anti-rotation shaft head is in matched splicing with the clamping groove to be used for fixing the car coupler traction force monitoring sensor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a side view of a coupler draft force monitoring sensor in accordance with an embodiment of the present invention;
FIG. 2 is a top view of a coupler draft force monitoring sensor in accordance with an embodiment of the present invention;
FIG. 3 is a front view of an anti-rotation stub shaft according to one embodiment of the present invention;
FIG. 4 is a front view of a support plate according to one embodiment of the present invention;
FIG. 5 is a schematic illustration of an installation location of a coupler draft force monitoring sensor in accordance with an embodiment of the present invention;
fig. 6 is a block diagram of a coupler according to an embodiment of the present invention.
Reference numerals:
a strain gage 200;
a connecting line 300;
the anti-rotation stub shaft 400;
a support plate 500 and a clamping groove 510;
the buffer 610, the coupler body 620, the front slave plate 630, the coupler yoke 640, the acquisition communication box 650 and the power generation module 660.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation descriptions, such as the orientation or positional relationship indicated by upper, lower, etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, a coupler draft force monitoring sensor according to an embodiment of the present invention includes: the coupler tail pin comprises a tail pin 100, a strain gauge 200 and a connecting wire 300, wherein the side wall of the tail pin 100 is provided with a counter bore 110, the strain gauge 200 is fixed in the counter bore 110, on one hand, the strain gauge 200 can be prevented from being exposed outside, the protection capability of the strain gauge 200 is improved, on the other hand, the shape of the tail pin 100 cannot be changed, the tail pin 100 is used as a part for directly bearing the transmission traction force of a vehicle in a coupler, the strain gauge 200 and the inner wall of the counter bore 110 are fixedly connected into a rigid whole, the traction force borne by the tail pin 100 is indirectly sensed, the service life of the strain gauge 200 can be prolonged, the force measuring precision can be improved, and one end of the tail pin 100 is provided with a wire outlet; the connecting wire 300 is positioned in the terminal pin 100, so that the terminal pin is prevented from being exposed to the outside and damaged by extrusion or friction and environmental pollution, the service life of the sensor is further prolonged, one end of the connecting wire 300 is connected with the strain gauge 200, and the other end of the connecting wire extends out of a wire outlet and is connected with a monitoring terminal or other monitoring equipment.
According to the embodiment of the invention, the counter bore 110 is formed in the side wall of the terminal pin 100, the strain gauge 200 is arranged in the counter bore 110, the strain gauge 200 can be effectively prevented from being damaged by external scraping, the terminal pin 100 is used as a rigid body to directly bear the traction force transmitted by a vehicle and then is fed back to the strain gauge 200, and the service life of the strain gauge 200 can be prolonged. The coupler tail pin 100 can be directly replaced in the original coupler, is used as a part of the original coupler and a traction force sensor, does not change the mechanical structure of the original coupler, does not need extra steps of polishing, pasting, sealing and the like, and is convenient to install. The tail pin 100 directly bears the traction force transmitted by the vehicle, and the stress point of the sensor can reflect the magnitude of the traction force of the coupler more truly, so that the measured traction force data is more accurate, and the force measurement precision is improved.
In order to further improve the force measurement accuracy, the counter bores 110 are arranged in a plurality of pairs and are oppositely arranged along two sides of the central axis of the terminal pin 100, the number of the strain gauges 200 is the same as that of the strain gauges 110, and the strain gauges are in one-to-one correspondence, in order to achieve the best balance between the cost and the force measurement accuracy, in the embodiment, the counter bores 110 are two pairs, the first pair of counter bores 110 is installed on the side wall of the upper end of the terminal pin 100, and the second pair of counter bores 110 is installed on the side wall of the lower end of the terminal pin 100. The two pairs of strain gauges form a Wheatstone full-bridge measurement bridge circuit for measuring the traction force of the coupler in real time. In the present embodiment, the outer diameter of the counterbore 110 is 22mm, and the inner diameter is 20mm, it should be understood that the present application is not limited to the size of the counterbore 110, and counterbores with other large sizes may be provided according to the size of the strain gage 200 selected.
In order to avoid the connection line 300 from leaking, referring to fig. 1 and 2, a through hole 120 is formed between two counterbores 110 symmetrical along the central axis of the sensor, the through hole 120 connects the bottoms of the two counterbores 110, so that the strain gauges 200 in the two counterbores 110 are connected through a bridge located in the through hole 120. In the present embodiment, the diameter of the through hole 120 is 4mm, and it should be understood that the present application is not limited to the diameter of the through hole 120, and a person skilled in the art may open through holes with other sizes according to actual needs. The wire grooves 130 are formed along the circle centers of the two counterbores on the same side, and the wire grooves 130 are used for realizing the bridge connection of the strain gauges 200 at the two ends. The width of the wire slot 130 in this embodiment is 2mm, and it can be understood that the width of the wire slot is not limited in this application, and those skilled in the art can set a wire slot according to the type and size of the rotating connecting wire 300. The connecting wire 300 extends into the terminal pin 100 and out of the outlet.
In conventional coupling structure, the backing plate is set up to the tail pin bottom, but the tail pin only with the backing plate butt, the tail pin of vehicle operation in-process cylinder shape can produce and rotate, when the dynamometry sensor of the tail pin shape of replacement cost application, can influence the connecting wire 300 that stretches out on the one hand, can influence the dynamometry precision on the other hand. In order to avoid the rotation of the sensor during the use process, in this embodiment, an anti-rotation shaft head 400 is fixed at one end of the tail pin 100, the cross section of the anti-rotation shaft head 400 is drum-shaped, referring to fig. 4, a rectangular clamping groove is formed in the bearing plate 500, and the anti-rotation shaft head 400 is fixed on the bearing plate 500 through the clamping groove, so as to avoid the rotation of the tail pin 100. Referring to fig. 3, the cross section of the anti-rotation shaft head 400 in this embodiment is a drum shape, and other shapes of the anti-rotation shaft head 400 and the slot shape may be adopted.
Referring to fig. 5 and 6, the present invention further relates to a coupler, which includes a coupler body, the coupler draft force monitoring sensor is a coupler draft force monitoring sensor, and the coupler body includes a buffer 610, a coupler body 620, a front slave plate 630, a coupler yoke 640 and a support plate 500. The front end of the buffer 610 abuts against the front slave plate 630, the coupler traction monitoring sensor is installed between the front slave plate 630 and the coupler body 620, the buffer 610, the front slave plate 630 and the coupler traction monitoring sensor are all installed in the coupler yoke 640, the bottom of the coupler traction monitoring sensor is further provided with a bearing plate 500, a rectangular clamping groove 510 is formed in the bearing plate 500, and the anti-rotation shaft head 400 is in matched insertion with the clamping groove 510. The bottom of the supporting plate 500 is also provided with a collecting communication box 650 and a power generation module 660. The invention can be used for replacing any train coupler, such as the No. 17 coupler shown in figure 5. The coupler traction monitoring sensor can completely replace a tail pin of a No. 17 coupler, serves as a coupler part and a traction sensor, meets the use and traction monitoring requirements in the vehicle carrying process, is simple to install, does not need to be polished, adhered or sealed, is long in service life, is high in strength and wear resistance, and is good in impact resistance, and the theoretical service life is more than 5 years.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A coupler draft force monitoring sensor, comprising:
the terminal pin (100), the side wall of the terminal pin (100) is provided with a counter bore (110), and one end of the terminal pin (100) is provided with a wire outlet;
a strain gage (200), said strain gage (200) mounted within said counterbore (110);
the connecting wire (300) is located in the terminal pin (100), one end of the connecting wire (300) is electrically connected with the strain gauge (200), and the other end of the connecting wire (300) extends out of the wire outlet.
2. The coupler draft force monitoring sensor of claim 1, wherein: the counter bores (110) are in a plurality of pairs, the counter bores are oppositely arranged on two sides of the central axis of the end pin (100), and the number of the strain gauges (200) is the same as that of the counter bores (110) and corresponds to that of the strain gauges one by one.
3. The coupler draft force monitoring sensor of claim 2, wherein: the counter bores (110) are arranged in two pairs and are respectively arranged on the side walls at two ends of the tail pin (100).
4. The coupler draft force monitoring sensor of claim 2, wherein: a through hole (120) for communicating the two counter bores (110) is formed between the opposite counter bores (110), and the connecting wire (300) is positioned in the through hole (120) and is used for connecting the strain gauges (200) at the two ends of the through hole (120).
5. The coupler draft force monitoring sensor of claim 2, wherein: the side wall of the terminal pin (100) between the counter bores (110) on the same side is provided with a wire groove (130) for connecting the two counter bores (110), and the connecting wire (300) is positioned in the wire groove (130) and used for connecting the strain gauges (200) at the two ends of the wire groove (130).
6. The coupler draft force monitoring sensor of claim 5, wherein: the width of the wire groove (130) is 1.5mm-2.5 mm.
7. The coupler draft force monitoring sensor of claim 1, wherein: and one end of the tail pin (100) is fixedly provided with an anti-rotation shaft head (400) which is used for being matched and plugged with a bearing plate (500) of the coupler to avoid the rotation of the tail pin (100).
8. The coupler draft force monitoring sensor of claim 7, wherein: the cross section of the anti-rotation shaft head (400) is drum-shaped.
9. A coupler characterized in that it comprises a coupler body, and a coupler draft force monitoring sensor according to any one of claims 1 to 8 is arranged in said coupler body.
10. The coupler of claim 1, wherein: the coupler traction force monitoring sensor is characterized by further comprising a supporting plate (500), a clamping groove (510) is formed in the supporting plate (500), and the anti-rotation shaft head (400) is matched and spliced with the clamping groove (510) to be used for fixing the coupler traction force monitoring sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867634.1A CN115077770A (en) | 2022-07-22 | 2022-07-22 | Coupler traction force monitoring sensor and coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867634.1A CN115077770A (en) | 2022-07-22 | 2022-07-22 | Coupler traction force monitoring sensor and coupler |
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| Publication Number | Publication Date |
|---|---|
| CN115077770A true CN115077770A (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210867634.1A Pending CN115077770A (en) | 2022-07-22 | 2022-07-22 | Coupler traction force monitoring sensor and coupler |
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| Country | Link |
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| CN (1) | CN115077770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116296021A (en) * | 2023-03-13 | 2023-06-23 | 湘潭市工矿电传动车辆质量检验中心 | Industrial and mining vehicle coupler traction detection system |
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| CN112729651A (en) * | 2021-04-02 | 2021-04-30 | 博鼎精工智能科技(山东)有限公司 | Shaft pin type force sensor, agricultural machinery suspension device and soil resistance measuring method |
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2022
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| GB311289A (en) * | 1927-06-06 | 1929-09-25 | Archibald William Blair | Improved means of coupling rolling stock |
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| CN116296021A (en) * | 2023-03-13 | 2023-06-23 | 湘潭市工矿电传动车辆质量检验中心 | Industrial and mining vehicle coupler traction detection system |
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