CN204008079U - Strain-type screw propeller electrical measurement pump dynamograph - Google Patents
Strain-type screw propeller electrical measurement pump dynamograph Download PDFInfo
- Publication number
- CN204008079U CN204008079U CN201320802688.6U CN201320802688U CN204008079U CN 204008079 U CN204008079 U CN 204008079U CN 201320802688 U CN201320802688 U CN 201320802688U CN 204008079 U CN204008079 U CN 204008079U
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- Prior art keywords
- drive shaft
- screw propeller
- strain
- electrical measurement
- torque sensor
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Abstract
The utility model discloses strain-type screw propeller electrical measurement pump dynamograph, comprise bearing, be installed on the servomotor of described bearing top, the vertical drive shaft being connected with servo motor transmission and with described vertical drive shaft by the be meshed horizontal drive shaft of transmission of gear set; One end of described horizontal drive shaft is connected with and pushes away torque sensor, described in push away torque sensor and be connected with screw propeller by horizontal spindle; The other end of described horizontal drive shaft is provided with terminal box by slip ring.Pump dynamograph of the present utility model test draft 500mm, has good watertightness, can measure water in stressing conditions under screw propeller duty, error is controlled at 0.5%, at 0～40 ° of temperature, normally works.
Description
Technical field
The utility model relates to screw propeller pump dynamograph, relates in particular to a kind of strain-type screw propeller electrical measurement pump dynamograph.
Background technology
Measure the thrust of screw propeller and the instrument of moment of torsion and be called screw propeller pump dynamograph.Theoretical Design is analyzed and improved to its object, for surveying and mapping data is depicted as to collection of illustrative plates,, needs for actual Design of Propeller.
Screw propeller pump dynamograph is by two kinds of mechanical type and electric measuring types.Mechanical power instrument at the trial, carrys out by the method for swing weight-adding thrust and the moment of torsion that symmetric screw propeller sends, and the pump dynamograph operation of this kind of form bothers.
And existing electrical testing pump dynamograph build-in test equipment is comparatively complicated, electrical testing pump dynamograph uses import accessory more, and price is high, when assembly fee; And measuring accuracy is not high, easily occurs error; Be not easy to use on a large scale.
Utility model content
The purpose of this utility model is to solve the problems of the prior art, and a kind of strain-type screw propeller electrical measurement pump dynamograph is provided.
The technical solution of the utility model is: a kind of strain-type screw propeller electrical measurement pump dynamograph, is characterized in that: comprise bearing, be installed on the servomotor of described bearing top, the vertical drive shaft being connected with servo motor transmission and with described vertical drive shaft by the be meshed horizontal drive shaft of transmission of gear set; One end of described horizontal drive shaft is connected with and pushes away torque sensor, described in push away torque sensor and be connected with screw propeller by horizontal spindle; The other end of described horizontal drive shaft is provided with terminal box by slip ring.
Described servomotor is arranged on the top of described bearing by crossing scale, described servomotor is connected with vertical drive shaft by shaft coupling.
Described shaft coupling is star-like spring coupling, at described shaft coupling, arresting disc is circumferentially installed, and offers six 360 ° of uniform notches at the flange of arresting disc, can insert the locked arresting lever of hand-operated brake in described notch.
The gear set that described vertical drive shaft is meshed with horizontal drive shaft is spiral bevel gear group, comprises two miter gears, and one of them bevel gear is arranged on vertical-transmission shaft tail end, and another bevel gear is arranged on the horizontal drive shaft engaging with it.
Described horizontal drive shaft is tubular shaft.
The wire that pushes away torque sensor passes from the hollow parts of horizontal drive shaft, is connected to terminal box via slip ring.
The described rear portion flange that pushes away torque sensor connects horizontal drive shaft, and front end connects horizontal spindle by flange sleeve.
The described torque sensor that pushes away comprises beam type thrust pickup, four beam type torque sensors, transmission rod, flexure strip, jointing and briquetting, one end of described thrust pickup by groove locate, bolt is connected on torque sensor, the other end is connected to jointing part by transmission rod; The other end of described torque sensor is connected by the briquetting of three forwards with flexure strip, and three reverse briquettings link together flexure strip and jointing.
Described six briquettings be 360 ° uniform.
The foil gauge of described thrust pickup, torque sensor is metal foil resistor foil gauge.
The utlity model has following beneficial effect:
(1) the utility model assembling is simple, cost is low;
(2) it is stable that gear set structure of the present utility model has ratio of gear, and noise is low, and load-bearing capacity is high, reliable operation, and compact conformation, wear-resistant, the feature that the life-span is long;
(3) foil gauge that pushes away torque sensor is selected metal foil resistor foil gauge, and compared with traditional wire strain gauge, it is little that foil gage has creep, and transversal effect is little, and fatigue lifetime is long, and radiating condition is good;
(4) pump dynamograph range ability of the present utility model is moment of torsion: ± 10Nm, thrust: 250N, and motor is 1.5Kw servomotor, simple for structure, maintenance cost is low;
(5) pump dynamograph of the present utility model test draft 500mm, has good watertightness, can measure water in stressing conditions under screw propeller duty, error is controlled at 0.5%, at 0～40 ° of temperature, normally works.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 1 a is that the utility model is installed on the structural representation on track;
Fig. 1 b is the structural representation of the utility model horizontal spindle;
Fig. 2 is the hand-operated brake schematic diagram of the utility model arresting disc, arresting lever composition;
Fig. 3 is the utility model sealing cut-open view;
Fig. 4 is the utility model spiral bevel gear vertical-transmission phantom view;
Fig. 5 a is the torque sensor front view that pushes away of the present utility model;
Fig. 5 b is the axis side views such as torque sensor that push away of the present utility model;
Fig. 6 is the inner electric bridge schematic layout diagram of torque sensor that pushes away of the present utility model;
Fig. 7 is the utility model slip ring, terminal box assembling schematic diagram.
Embodiment
For technological means, technical characterictic, utility model object and technique effect that the utility model is realized are easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
If Fig. 1 is a kind of strain-type screw propeller electrical measurement pump dynamograph of the present utility model, the vertical drive shaft 16 that comprise bearing 3, be installed on the servomotor 2 of described bearing 3 tops, is connected with servomotor 2 transmissions and with described vertical drive shaft 16 by the be meshed horizontal drive shaft 14 of transmission of gear set 162; One end of described horizontal drive shaft 14 is connected with and pushes away torque sensor 161, described in push away torque sensor 161 and be connected with screw propeller 4 by horizontal spindle 13; The other end of described horizontal drive shaft 14 is provided with terminal box 26 by slip ring 25.
If Fig. 1 a is installation diagram of the present utility model, in accompanying drawing, 1 is that mast-up, 2 is that servomotor, 3 is that bearing, 4 is that screw propeller, 5 is light rail test tracks.The part that light rail test tracks 5 is circulating water chennel, mast-up 1 bridges above light rail test tracks 5, lifts strain-type screw propeller electrical measurement pump dynamograph of the present utility model below mast-up 1.Servomotor 2 of the present utility model is arranged on the top of streamlined bearing 3 by crossing scale 31, and is connected with vertical drive shaft 14 by star-like spring coupling 21, forms power section of the present utility model.
As shown in Figure 2, shaft coupling 21 arresting disc 6 is circumferentially installed, arresting disc 6 is held tightly on shaft coupling 21 by holding screw; Offer six 360 ° uniform notches 61 at the flange of arresting disc 6, in notch 61, can insert the locked arresting lever of hand-operated brake 7,7 arresting levers insertion notches 61 can be realized to hand-operated brake locked.
As shown in Fig. 3,1b, be underwater sealing of the present utility model, wherein 9 is seal sleeve, is positioned at the front portion of horizontal spindle 13, the rear of screw propeller 4.The inwall of seal sleeve 9 is provided with axial seal and end face V-type oil sealing, wherein 11 is horizontal spindle overcoat, and locate by screw thread between seal sleeve 9, overlapping 12 interference fit by V-type oil sealing 8 and horizontal spindle fixes, 10 is the O type circle for axial seal, axial seal is all installed and holds to seal, separately in whole pump dynamograph structural design as all seam crossings, design air hole, be connected with hothouse.
Be illustrated in figure 4 gear set of the present utility model, wherein 16 is horizontal drive shaft, and in the utility model, horizontal drive shaft 14 is tubular shaft, and 16 is vertical drive shaft, realizes right-angle drive between the two by a pair of roll flute curved tooth of 15a, 15b miter gear.When installation, consider screw propeller 4 be subject to force direction and bevel gear drive time be subject to force direction, according to screw propeller 4 left-handed/dextrorotation; determine the rotation direction of 15a, 15b; allow as far as possible it keep contrary direction, thereby balance a part of power, reaching protection bevel gear increases the object in life-span.First 15a is assembled and coordinates the rear Bolt to position of using with vertical drive shaft 16, then by horizontal tubular shaft 14 and 15b assembling, locate with set nut by packing ring and axle, and pair of horns contact bearing is installed with absorption axes acting force upwards.Part on horizontal drive shaft 14 packs in pump dynamograph after all installing together, and gear is engaged to adjustment.It is stable that this structure has ratio of gear, and noise is low, and load-bearing capacity is high, reliable operation, and compact conformation, wear-resistant, the features such as life-span length.
As Fig. 5 a, 5b are depicted as the assembling schematic diagram that pushes away torque sensor 161.The rear portion flange that pushes away torque sensor 161 connects horizontal drive shaft 14, and front end connects horizontal spindle 13 by flange sleeve, is the pith in a whole set of surveying instrument.Its composition comprises: beam type thrust pickup 22, four beam type torque sensors 21, transmission rod 20, flexure strip 18, jointing 19 and briquetting 23.Thrust pickup 22, torque sensor 21 all adopt strain beam type, and locate by groove thrust pickup 22 one end, and bolt is connected on torque sensor 21, and the other end is connected to jointing 19 parts by transmission rod 20.The other end of torque sensor 21 is connected by the briquetting 23 of three forwards with flexure strip 18, and three reverse briquettings 23 link together flexure strip 18 and jointing 19, six briquettings be 360 ° uniform.When work; the screw propeller 4 of front end rotates; be subject to the acting force of current; moment of torsion is passed to jointing 19 parts by the horizontal spindle 13 that connects screw propeller 4; by the effect of briquetting 23 and flexure strip 18, transmission rod 20; thrust and moment of torsion are separated; play and avoid signal to disturb; protecting component increases the effect in serviceable life; push away torsion torque sensor and all pass through detailed calculating and check repeatedly, test, at strain deformation ratio, signal output size; sensitivity, chooses more rational formal parameter between the rigidity of structure.
Figure 6 shows that the foil gauge connection principle schematic diagram on thrust pickup 22, torque sensor 21.R1～R4 is for measuring bridge road rate of strain, and Rt is zero temperature compensation resistance, and Ra exports adjusting resistance zero point, and Rm is sensitivity temperature compensating resistance, and RI is linear compensation resistance.These compensating resistances are for what time following:
1) drift: after balance preheating, zero year with room temperature situation under, the variable quantity of each component bridge output in 30 minutes, the output value of electric bridge while being not more than balance design range obtains 0.2%.
2) temperature is floated: balance in zero load situation with environment for use temperature range in, be the variable quantities of the caused each component bridge output of 10 DEG C of temperature variation, 0.2% of the output value of electric bridge while being not more than balance design range.
3) the each arm resistance difference of electric bridge: be not more than 0.3 Ω.
4) insulation resistance: the resistance value between strainometer, circuit and day flat elements, is not less than 2 × 103M Ω.
The advantages such as foil gauge is selected metal foil resistor foil gauge, and compared with traditional wire strain gauge, it is little that foil gage has creep, and transversal effect is little, and fatigue lifetime is long, and radiating condition is good.By sensor is carried out to calculative determination patch location, head and the tail the end of a thread is connected, composition Wheatstone bridge.When pasting foil gauge place on the beam of sensor due to stressed while producing deformation, resistance wire in foil gauge occurs to stretch or flexural deformation, thereby resistance change causes electric bridge to pass balance, output signal, via amplifilter, export to computing machine or registering instrument and carry out data processing again.
Figure 7 shows that slip ring scheme of installation of the present utility model; Slip ring 25 is arranged on the front of terminal box 26, the winding problem of inner lead while utilizing the motionless principle of rotor rotation stator to solve tubular shaft rotation.Wire passes from the middle hollow position of horizontal drive shaft 14, is connected to terminal box 26 places of these horizontal drive shaft 14 ends via slip ring 25.
Terminal box 26 adopts the insulating material of epoxy resin fiber to make, inside be welded with printed-wiring board (PWB), data line 24 is connected to the printed-wiring board (PWB) in terminal box 26 from slip ring 25 picks out, then aperture terminal box 26 picks out, and is connected to the plug place of streamlined bearing 3 left side, tops terminal boxes.Described external data acquisition system comprises a computing machine, data collecting card and a set of data acquisition software.
Testing tool range ability of the present utility model is ± 10Nm, 250N, and motor is 1.5Kw servomotor, simple for structure, maintenance cost is low.Testing tool draft 500mm, has good watertightness, can measure water in stressing conditions under screw propeller duty, error is controlled at 0.5%, 0～40 ° of temperature and normally works.
Be only the utility model preferred embodiment in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should belong to technology category of the present utility model.
Claims (10)
1. strain-type screw propeller electrical measurement pump dynamograph, is characterized in that: comprise bearing, be installed on the servomotor of described bearing top, the vertical drive shaft being connected with servo motor transmission and with described vertical drive shaft by the be meshed horizontal drive shaft of transmission of gear set; One end of described horizontal drive shaft is connected with and pushes away torque sensor, described in push away torque sensor and be connected with screw propeller by horizontal spindle; The other end of described horizontal drive shaft is provided with terminal box by slip ring.
2. strain-type screw propeller electrical measurement pump dynamograph according to claim 1, is characterized in that: described servomotor is arranged on the top of described bearing by crossing scale, described servomotor is connected with vertical drive shaft by shaft coupling.
3. strain-type screw propeller electrical measurement pump dynamograph according to claim 2, it is characterized in that: described shaft coupling is star-like spring coupling, at described shaft coupling, arresting disc is circumferentially installed, offer six 360 ° of uniform notches at the flange of arresting disc, in described notch, can insert the locked arresting lever of hand-operated brake.
4. strain-type screw propeller electrical measurement pump dynamograph according to claim 1, it is characterized in that: the gear set that described vertical drive shaft is meshed with horizontal drive shaft is spiral bevel gear group, comprise two miter gears, one of them bevel gear is arranged on vertical-transmission shaft tail end, and another bevel gear is arranged on the horizontal drive shaft engaging with it.
5. strain-type screw propeller electrical measurement pump dynamograph according to claim 1, is characterized in that: described horizontal drive shaft is tubular shaft.
6. strain-type screw propeller electrical measurement pump dynamograph according to claim 5, is characterized in that: the wire that pushes away torque sensor passes from the hollow parts of horizontal drive shaft, is connected to terminal box via slip ring.
7. strain-type screw propeller electrical measurement pump dynamograph according to claim 1, is characterized in that: described in push away torque sensor rear portion flange connect horizontal drive shaft, front end connects horizontal spindle by flange sleeve.
8. according to the strain-type screw propeller electrical measurement pump dynamograph described in claim 1 or 7, it is characterized in that: described in push away torque sensor and comprise beam type thrust pickup, four beam type torque sensors, transmission rod, flexure strip, jointing and briquetting, one end of described thrust pickup by groove locate, bolt is connected on torque sensor, the other end is connected to jointing part by transmission rod; The other end of described torque sensor is connected by the briquetting of three forwards with flexure strip, and three reverse briquettings link together flexure strip and jointing.
9. strain-type screw propeller electrical measurement pump dynamograph according to claim 8, is characterized in that: described six briquettings be 360 ° uniform.
10. strain-type screw propeller electrical measurement pump dynamograph according to claim 8, is characterized in that: the foil gauge of described thrust pickup, torque sensor is metal foil resistor foil gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802688.6U CN204008079U (en) | 2013-12-09 | 2013-12-09 | Strain-type screw propeller electrical measurement pump dynamograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802688.6U CN204008079U (en) | 2013-12-09 | 2013-12-09 | Strain-type screw propeller electrical measurement pump dynamograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008079U true CN204008079U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320802688.6U Withdrawn - After Issue CN204008079U (en) | 2013-12-09 | 2013-12-09 | Strain-type screw propeller electrical measurement pump dynamograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008079U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604600A (en) * | 2013-12-09 | 2014-02-26 | 上海市东方海事工程技术有限公司 | Strain propeller electric test dynamometer |
| CN104596692A (en) * | 2014-12-26 | 2015-05-06 | 浙江海洋学院 | Propeller thrust measuring device for small boat |
| CN105021337A (en) * | 2015-07-30 | 2015-11-04 | 中国航空工业集团公司哈尔滨空气动力研究所 | Propeller driving rotation force measuring apparatus and force measuring method |
| CN105235819A (en) * | 2015-11-04 | 2016-01-13 | 苏州船用动力系统股份有限公司 | Ship lateral propeller thrust measuring test model and application thereof |
| CN108760231A (en) * | 2018-05-29 | 2018-11-06 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of Cavitation Tunnel propeller pump dynamograph |
-
2013
- 2013-12-09 CN CN201320802688.6U patent/CN204008079U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604600A (en) * | 2013-12-09 | 2014-02-26 | 上海市东方海事工程技术有限公司 | Strain propeller electric test dynamometer |
| CN103604600B (en) * | 2013-12-09 | 2016-02-24 | 上海市东方海事工程技术有限公司 | Strain-type propeller electric test dynamometer |
| CN104596692A (en) * | 2014-12-26 | 2015-05-06 | 浙江海洋学院 | Propeller thrust measuring device for small boat |
| CN105021337A (en) * | 2015-07-30 | 2015-11-04 | 中国航空工业集团公司哈尔滨空气动力研究所 | Propeller driving rotation force measuring apparatus and force measuring method |
| CN105235819A (en) * | 2015-11-04 | 2016-01-13 | 苏州船用动力系统股份有限公司 | Ship lateral propeller thrust measuring test model and application thereof |
| CN108760231A (en) * | 2018-05-29 | 2018-11-06 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of Cavitation Tunnel propeller pump dynamograph |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |