CN203116899U - Tensile force measuring sensor for contact system cable and measuring device - Google Patents
Tensile force measuring sensor for contact system cable and measuring device Download PDFInfo
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- CN203116899U CN203116899U CN 201320003108 CN201320003108U CN203116899U CN 203116899 U CN203116899 U CN 203116899U CN 201320003108 CN201320003108 CN 201320003108 CN 201320003108 U CN201320003108 U CN 201320003108U CN 203116899 U CN203116899 U CN 203116899U
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- straight pin
- pulley
- ratchet
- tension force
- thread tension
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Abstract
The utility model discloses a tensile force measuring sensor for contact system cables and a measuring device. In allusion to defects of a tensile force measuring mechanism in the prior art for contact system pay-off cables such as complex structure, limited measurement precision and high operation requirements, the utility model provides the tensile force measuring sensor for the contact system cables and the measuring device. The main body of the measuring sensor is a cylindrical pin, wherein the axle center of the cylindrical pin is provided with an axial through-hole, the through-hole is internally provided with two strain sensors and necessary power supply circuits, the strain sensors are arranged in a centrally symmetric manner by taking the axial direction of the through-hole as a center, and connectors of the strain sensors are at one end of the cylindrical pin. The tensile force measuring device comprises the tensile force measuring sensor. The middle part of the cylindrical pin is externally sleeved by a pulley wheel or a ratchet wheel, the cylindrical pin is in rolling connection with the pulley wheel or the ratchet wheel, and the pulley wheel or the ratchet wheel is located at an axial central area part of the cylindrical pin. The sensor disclosed by the utility model is high in measurement precision. The measuring device disclosed by the utility model does not need to change the structure of a contact system when used, and has low influences on the safety of the contact system; the measuring device is simple and convenient to install, and has good universality; and the measurement is convenient to operate.
Description
Technical field
The present invention relates to a kind of tonometry sensor and measurement mechanism, particularly relate to a kind of electrification railway contact net thread tension force survey sensor and measurement mechanism, belong to manufacturing or the repairing field of electric vehicle pole line.
Background technology
Contact net be along electric railway distribute and to set up no standby, for electric train provides the supply line of electric energy, belong to the railway fixation means, its space geometry structure directly influences the current carrying quality of electric train.Osculatory tension force and carrier cable tension force are the important parameters of control contact net space geometry structure, are that a clue continuously is divided into two sections to the conventional method of its measurement, and middle serial connection pulling force sensor is directly measured the size of thread tension force.But the problem of the method is to seal in pulling force sensor, changes original contact net structure, increases the security risk of contact net.It is to seal in pulling force sensor in clue that thread tension force is measured the most direct mode, but as online detection, this mode is unworkable, can only adopt the mode of indirect measurement.
Granted publication number applies and measuring mechanism for the Chinese utility model patent of CN2897723Y discloses a kind of railway contact-net paying-out thread tension force, parallel on the bracing frame of this mechanism two back shafts are installed, friction pulley and freewheel are housed, two friction pulleys friction pair that partners on the back shaft; At the bracing frame upslide drive unit is arranged, drive unit and friction pair are in transmission connection; On the bracing frame base tension measuring device is housed.When mechanism works, drive unit drives friction pulley and rotates, utilize friction force to amplify to be wrapped in the tension force of clue on the friction pulley, the clue of emitting during operation enters tension measuring device, is measured the component of its vertical direction and is obtained the actual value of thread tension force indirectly by tension measuring device.Mainly there are 2 technological deficiencies in this device for measuring force, and the one, structure is too complicated; The 2nd, adopt triangle dynamometry principle, need guarantee during use that friction pulley tangential tension and horizontal angle remain unchanged, operation is had relatively high expectations; The 3rd, calculate thread tension force by the friction force of amplifying, measuring accuracy is limited.
Summary of the invention
Purpose of the present invention is exactly at the deficiencies in the prior art, provides a kind of equipment light small and exquisite, the contact net thread tension force measurement mechanism that operation is simple, and this device can be simplified the operation of the online detection of contact net.
For achieving the above object, the utility model at first provides a kind of contact net thread tension force survey sensor, and its technical scheme is as follows:
A kind of contact net thread tension force survey sensor is characterized in that: main body is a straight pin, and the axle center of described straight pin has axially extending bore, arranges two strain transducers and necessary feed circuit in the through hole; Described strain transducer is with the axial centre symmetric arrangement of through hole, and the connector of strain transducer is positioned at straight pin one termination.
Above-mentioned survey sensor is centrosymmetric structure, be divided into three functional areas in sensor surface integral body: one, clue load district: cylindrical pin is clue load district to the zone that is centered close between two strain transducers, bears contact net clue pulling force during use and produces along the tangential deformation of straight pin; Two, deformation acquisition zone: the strain transducer region is the deformation acquisition zone, measures because the tangential strain of the straight pin that thread tension force causes is gathered the deformation data and exported measurement module to via connector by the strain transducer that is arranged in the axially extending bore.Strain transducer can use dissimilar, and is common as FBG class, resistance class, so the concrete installation direction of strain transducer unified feature of nothing under visible condition, but total requirement is to realize that should changing direction of strain transducer is tangential along straight pin; Three, fixed area: two strain transducers to the zone of straight pin two ends is fixed area, keeps the straight pin overall fixed motionless by operation such as gripping when working sensor.
The hole shape design of above-mentioned survey sensor center axially extending bore is to guarantee one of essential condition of accurately measuring strain data.Under ideal conditions, the hole shape of through hole and specification need according to measuring picture to be required specific design.Generally speaking, axially extending bore is elliptical aperture, should the changing direction in the same way of its long axis direction and strain transducer.
Above-mentioned survey sensor structure, can do following four aspect optimizations:
Above-mentioned survey sensor, the installation direction of its strain transducer are that it should be changed direction is tangential along straight pin.
Above-mentioned survey sensor, two adjacent edge spacing d=20cm～25cm of the nearly straight pin axial centre of its two strain transducer.
Above-mentioned survey sensor, its axially extending bore is elliptical aperture, the installation direction of strain transducer be its should change direction with the elliptical aperture major axis in the same way.
Further, above-mentioned survey sensor, straight pin length 33cm～38cm, the projection space D=21cm～26cm of two strain transducer centers on the straight pin circumference.
Based on above-mentioned contact net thread tension force survey sensor, the utility model further provides a kind of contact net thread tension force measurement mechanism, and its technical scheme is as follows:
A kind of contact net thread tension force measurement mechanism that utilizes above-mentioned survey sensor to realize, it is characterized in that: comprise contact net thread tension force survey sensor, described straight pin middle part overcoat pulley/ratchet, between straight pin and pulley/ratchet bearing is arranged, straight pin connects by bearing element with pulley/ratchet; Described pulley/ratchet at two adjacent edges of the nearly straight pin axial centre of two strain transducers between the projected position on the straight pin circumference, with straight pin axial centre symmetric arrangement.
This contact net thread tension force measurement mechanism is that the center periphery at contact net thread tension force survey sensor installs pulley/ratchet additional, and pulley/ratchet position is in the clue load district of straight pin, and pulley/ratchet connects by bearing element with survey sensor.The one-piece construction of measurement mechanism is centrosymmetric pulley spindle latch structure, and is identical with the pivot pin of tension compensator existing in the contact net.When using this device to carry out the on-line measurement of contact net thread tension force, only need this pulley pivot pin (being this contact net thread tension force measurement mechanism) is installed in the pivot pin of the existing tension compensator of replacements in the contact net, can finish the survey sensor installation.After the measurement mechanism installation, outer around measuring clue on pulley/ratchet during measurement, by measuring the tangential deformation of the sensor that thread tension force causes, by the relation of acting force and reacting force, extrapolate the stressing conditions in clue load district.The tangential deformation of survey sensor and clue load district be stressed funtcional relationship, can draw the measurement thread tension force as calculated.
Compared with prior art, the beneficial effects of the utility model are: (1) survey sensor belongs to the pivot pin sensor, measures the pivot pin type, can improve contact net thread tension force measuring accuracy; (2) measurement mechanism need not change the contact net structure, obtains the contact net thread tension force indirectly, reduces measuring equipment to greatest extent to the security implication of contact net; (3) measurement mechanism can be in contact net existing tension compensator install additional and finish, quantities is little, and has good versatility; (4) measurement mechanism is simple in structure, measurement is easy to operate.
Description of drawings
Fig. 1-the 1st, embodiment one contact net thread tension force survey sensor structural representation.
Fig. 1-2 is the A-A diagrammatic cross-section of Fig. 1-1
Fig. 2 is embodiment two contact net thread tension force survey sensor axial section structural representations.
Fig. 3 is embodiment three contact net thread tension force survey sensor radial section structural representations.
Fig. 4-the 1st, embodiment four contact net thread tension force measurement mechanism structural representations.
Fig. 4-the 2nd, embodiment four contact net thread tension force measurement mechanism axial section structural representations.
Fig. 5-the 1st, embodiment five contact net thread tension force measurement mechanisms are installed the end face structural representation.
Fig. 5-the 2nd, embodiment five contact net thread tension force measurement mechanism installation shaft are to cross-sectional view.
Fig. 5-the 3rd, embodiment five contact net thread tension force measurement mechanisms are installed the radial section structural representation.
Fig. 5-the 4th, embodiment five survey sensors are measured state force structure synoptic diagram (showing θ/2 places).
Figure notation in the accompanying drawing is respectively:
1 straight pin, 11 through holes, 12 strain transducers, 13 connectors, 2 pulleys/ratchet
21 bearings, 3 clamping plate
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is further described.
Embodiment one
As shown in Figure 1, process a kind of contact net thread tension force survey sensor.
Fig. 1-the 1st, contact net thread tension force survey sensor structural representation; Fig. 1-2 is the A-A diagrammatic cross-section of Fig. 1-1.Contact net thread tension force survey sensor, main body are straight pins 1, and the axle center of straight pin 1 has axially extending bore 11, arrange two strain transducers 12 and necessary feed circuit in the through hole 11.Strain transducer 12 is with the axial centre symmetric arrangement of through hole 11, and the connector 13 of strain transducer 12 is positioned at straight pin 1 one terminations.
The installation direction of strain transducer 12 is that it should be changed direction is tangential along straight pin 1.
Embodiment two
As shown in Figure 2, process a kind of contact net thread tension force survey sensor, itself and embodiment one something in common no longer repeat, and its difference is:
Fig. 2 is contact net thread tension force survey sensor axial section structural representation.Two adjacent edge spacing d=20cm～25cm of strain transducer 12 nearly straight pin 1 axial centre.
In the present embodiment, straight pin 1 length L=33cm～38cm, the projection space D=21cm～26cm of two strain transducers, 12 centers on straight pin 1 circumference.
Embodiment three
As shown in Figure 3, process a kind of contact net thread tension force survey sensor, it no longer repeats with embodiment one or two identical parts, and its difference is:
Fig. 3 is contact net thread tension force survey sensor radial section structural representation.The axially extending bore 11 of contact net thread tension force survey sensor is elliptical aperture.The installation direction of strain transducer 12 be its should change direction with the elliptical aperture major axis in the same way.
Embodiment four
As shown in Figure 4, process a kind of contact net thread tension force measurement mechanism, this device is further processing realization on above-mentioned survey sensor basis, and it no longer repeats with embodiment one or two or three identical parts.
Fig. 4-the 1st, contact net thread tension force measurement mechanism structural representation; Fig. 4-the 2nd, contact net thread tension force measurement mechanism axial section structural representation.Contact net thread tension force measurement mechanism comprises contact net thread tension force survey sensor; Straight pin 1 middle part overcoat pulley/ ratchet 2,2 on straight pin 1 and pulley/ratchet have bearing 21, and straight pin 1 rolls by bearing 21 with pulley/ratchet 2 and connects; Pulley/ratchet 2 at two adjacent edges of two strain transducers, 12 nearly straight pin 1 axial centre between the projected position on straight pin 1 circumference, with straight pin 1 axial centre symmetric arrangement.Pulley/ratchet 2 thickness are less than two adjacent edge spacing d of strain transducer 12 nearly straight pin 1 axial centre.
Install for the scene of simplified measurement device, in the present embodiment, pulley/ratchet 2 is the pulley in the clue tension compensator or ratchets in the railway contact line.
Embodiment five
As shown in Figure 5, process a kind of contact net thread tension force measurement mechanism, itself and embodiment four something in common no longer repeat, and its difference is to comprise clamping plate.
Fig. 5-the 1st, contact net thread tension force measurement mechanism is installed the end face structural representation; Fig. 5-the 2nd, contact net thread tension force measurement mechanism installation shaft is to cross-sectional view.Straight pin 1 two ends or apart from the clamping plate 3 that removably are fixedly connected respectively in two ends 10cm～12cm zone, second splint 3 is with the axial centre symmetric arrangement of straight pin 1.
Fig. 5-the 3rd, contact net thread tension force measurement mechanism is installed the radial section structural representation; Fig. 5-1, Fig. 5-3 shows that thread tension force T, clue angle θ, three of the stressed F in clue load district satisfy parallelogram mechanics rule, suppose under the constant prerequisite of clue angle θ, and thread tension force T and the stressed F in clue load district have funtcional relationship.
Fig. 5-the 4th, survey sensor is measured state force structure synoptic diagram (showing θ/2 places).The position in the cross section that Fig. 5-4 shows is half θ of angle θ/2 places between clue among Fig. 5-1 or Fig. 5-3.Because having drawn thread tension force T, Fig. 5-1 or Fig. 5-3 with the regional stressed F of wheel commentaries on classics funtcional relationship is arranged, the tangential deformation of measuring pivot pin among Fig. 5-4 has corresponding funtcional relationship again with the regional stressed F of wheel commentaries on classics, namely can draw thread tension force T indirectly by the tangential deformation of measuring pivot pin.
Claims (9)
1. contact net thread tension force survey sensor, it is characterized in that: main body is a straight pin (1), and the axle center of described straight pin (1) has axially extending bore (11), arranges two strain transducers (12) and necessary feed circuit in the through hole (11); Described strain transducer (12) is with the axial centre symmetric arrangement of through hole (11), and the connector (13) of strain transducer (12) is positioned at straight pin (1) one termination.
2. survey sensor according to claim 1 is characterized in that: the installation direction of described strain transducer (12) is that it should be changed direction is tangential along straight pin (1).
3. survey sensor according to claim 1 is characterized in that: two adjacent edge spacing d=20cm～25cm of nearly straight pin (1) axial centre of described two strain transducers (12).
4. according to claim 1 or 2 or 3 described survey sensors, it is characterized in that: described axially extending bore (11) is elliptical aperture, the installation direction of described strain transducer (12) be its should change direction with the elliptical aperture major axis in the same way.
5. survey sensor according to claim 4 is characterized in that: described straight pin (1) length 33cm～38cm, the projection space D=21cm～26cm of described two strain transducers (12) center on straight pin (1) circumference.
6. contact net thread tension force measurement mechanism that utilizes the described survey sensor of claim 5 to realize, it is characterized in that: comprise contact net thread tension force survey sensor, described straight pin (1) middle part overcoat pulley/ratchet (2), between straight pin (1) and pulley/ratchet (2) bearing (21) is arranged, straight pin (1) rolls by bearing (21) with pulley/ratchet (2) and connects; Described pulley/ratchet (2) is positioned at two adjacent edges of nearly straight pin (1) axial centre of two strain transducers (12) between the projected position on straight pin (1) circumference, with straight pin (1) axial centre symmetric arrangement.
7. measurement mechanism according to claim 6 is characterized in that: described pulley/ratchet (2) thickness is less than two adjacent edge spacing d of nearly straight pin (1) axial centre of two strain transducers (12).
8. measurement mechanism according to claim 6, it is characterized in that: described pulley/ratchet (2) is the pulley in the clue tension compensator or ratchet in the railway contact line.
9. according to claim 6 or 7 or 8 described measurement mechanisms, it is characterized in that: described straight pin (1) two ends or apart from the clamping plate (3) that removably are fixedly connected respectively in two ends 10cm～12cm zone, second splint (3) is with the axial centre symmetric arrangement of straight pin (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003108 CN203116899U (en) | 2013-01-05 | 2013-01-05 | Tensile force measuring sensor for contact system cable and measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003108 CN203116899U (en) | 2013-01-05 | 2013-01-05 | Tensile force measuring sensor for contact system cable and measuring device |
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| Publication Number | Publication Date |
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| CN203116899U true CN203116899U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320003108 Expired - Fee Related CN203116899U (en) | 2013-01-05 | 2013-01-05 | Tensile force measuring sensor for contact system cable and measuring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203239A (en) * | 2015-11-02 | 2015-12-30 | 南京航空航天大学 | Suspended unbalanced dynamic tension sensor |
| CN107091708A (en) * | 2017-04-27 | 2017-08-25 | 武汉船用机械有限责任公司 | A kind of chock that function is detected with tension force |
| CN107117037A (en) * | 2017-05-24 | 2017-09-01 | 西南交通大学 | Bow net contact power rod-type pressure sensor and its method for measuring bow net contact power |
| CN110987270A (en) * | 2019-11-01 | 2020-04-10 | 成都云铁智能交通科技有限公司 | Contact net tension sensor device |
-
2013
- 2013-01-05 CN CN 201320003108 patent/CN203116899U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203239A (en) * | 2015-11-02 | 2015-12-30 | 南京航空航天大学 | Suspended unbalanced dynamic tension sensor |
| CN105203239B (en) * | 2015-11-02 | 2017-07-11 | 南京航空航天大学 | A kind of non-equilibrium dynamic tension sensor of suspension type |
| CN107091708A (en) * | 2017-04-27 | 2017-08-25 | 武汉船用机械有限责任公司 | A kind of chock that function is detected with tension force |
| CN107117037A (en) * | 2017-05-24 | 2017-09-01 | 西南交通大学 | Bow net contact power rod-type pressure sensor and its method for measuring bow net contact power |
| CN107117037B (en) * | 2017-05-24 | 2023-04-11 | 西南交通大学 | Rod type pressure sensor for bow net contact force and method for measuring bow net contact force |
| CN110987270A (en) * | 2019-11-01 | 2020-04-10 | 成都云铁智能交通科技有限公司 | Contact net tension sensor device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20150105 |
|
| EXPY | Termination of patent right or utility model |