CN203929600U - The dismountable pendulum friction coefficient determinator of a kind of base - Google Patents
The dismountable pendulum friction coefficient determinator of a kind of base Download PDFInfo
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- CN203929600U CN203929600U CN201420306145.XU CN201420306145U CN203929600U CN 203929600 U CN203929600 U CN 203929600U CN 201420306145 U CN201420306145 U CN 201420306145U CN 203929600 U CN203929600 U CN 203929600U
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- pendulum
- friction coefficient
- rear support
- front bearing
- coefficient determinator
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Abstract
The application discloses the dismountable pendulum friction coefficient determinator of a kind of base, comprise base, be installed on described base top column and rotate and to be installed on the pendulum on described column, described base comprises T-shaped leg, described T-shaped leg comprises vertically disposed front bearing and rear support, and described front bearing and rear support are detachably fixing.T-shaped leg is detachably assembled, easy to process, take up room little, be convenient to transportation; In addition, the first plate of front bearing arranges with the second plate is vertical, has mutually played the effect of stiffening rib, because of the whole comparatively robust of bearing before this, is difficult for bending, long service life; And rear support is joined by vertical plate bending front and back, its middle part forms the cavity running through up and down, so arranges, reduced on the one hand the use of metal material, reduced costs, on the other hand, the strength ratio of rear support is higher, is difficult for deformation bending, long service life.
Description
Technical field
The application belongs to observation and control technology field, in particular to a kind of pendulum friction coefficient determinator.
Background technology
The non-skid property of road surface, airfield runway is the guardian technique index that is related to vehicle, aircraft driving safety.Along with the development of communications and transportation cause, the anti-skidding problem on the surface such as highways and streets and airfield runway, has caused the generally attention of relevant department.
Pendulum friction coefficient determinator (being called for short " portable pendulum tester ") is a kind of instrument of measuring the skin-friction coefficients such as highway, airfield runway, roadmarking, building stones, also the mensuration that can be used for typical surface friction coefficient, as the important evidence of determining doughnut formula.It is to carry out friction coefficient measurement according to " when the elevation loss of pendulum equals to be installed on swing arm end sheet rubber and slips over measured surface, overcoming friction institute work " this ultimate principle.
Existing pendulum friction coefficient determinator generally includes base, be installed on described base top column and rotate and be installed on the pendulum on described column, base comprises T-shaped leg, three ends of T-shaped leg are separately installed with a leveling serew, its problem is: T-shaped leg is generally one-body molded, take up room large, be difficult for transportation, and processing cost is high.
Utility model content
The purpose of this utility model is to provide a kind of pendulum friction coefficient determinator, to overcome deficiency of the prior art.
For achieving the above object, the utility model provides following technical scheme:
The embodiment of the present application discloses a kind of pendulum friction coefficient determinator, comprise base, be installed on described base top column and rotate and to be installed on the pendulum on described column, described base comprises T-shaped leg, described T-shaped leg comprises vertically disposed front bearing and rear support, and described front bearing and rear support are detachably fixing.
Preferably, in above-mentioned pendulum friction coefficient determinator, one side of described rear support one end is extended with the first installation portion, this first installation portion is rotatably fixed on front bearing, the opposite side of described rear support in same one end is extended with the second installation portion, on described the second installation portion, offer mounting groove, the position of the corresponding mounting groove of described front bearing is provided with mounting hole, between described mounting groove and mounting hole, is fixed with screw.
Preferably, in above-mentioned pendulum friction coefficient determinator, described the first installation portion is vertically formed with the first mounting hole, and on described front bearing, corresponding described the first mounting hole is provided with the second mounting hole vertically, between described the first mounting hole and the second mounting hole, is provided with screw.
Preferably, in above-mentioned pendulum friction coefficient determinator, described front bearing comprises horizontally disposed the first plate and is positioned at described the first plate top and second plate vertical with the first plate.
Preferably, in above-mentioned pendulum friction coefficient determinator, described rear support is joined by vertical plate bending front and back, and the middle part of described rear support forms a cavity running through up and down.
Preferably, in above-mentioned pendulum friction coefficient determinator, also comprise:
Position sensing unit, it is connected with pendulum, for measuring the pendulum angle of pendulum;
CPU (central processing unit), it is connected with described position sensing unit communication;
Display, is connected in described CPU (central processing unit).
Preferably, in above-mentioned pendulum friction coefficient determinator, also comprise temperature sensor, described temperature sensor is connected in described display and CPU (central processing unit).
Compared with prior art, the utility model has the advantage of: T-shaped leg is detachably assembled, easy to process, take up room little, be convenient to transportation; In addition, the first plate of front bearing arranges with the second plate is vertical, has mutually played the effect of stiffening rib, because of the whole comparatively robust of bearing before this, is difficult for bending, long service life; And rear support is joined by vertical plate bending front and back, its middle part forms the cavity running through up and down, so arranges, reduced on the one hand the use of metal material, reduced costs, on the other hand, the strength ratio of rear support is higher, is difficult for deformation bending, long service life.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1 shows that the perspective view of pendulum friction coefficient determinator in the utility model specific embodiment;
Figure 2 shows that the perspective view of another angle of pendulum friction coefficient determinator in the utility model specific embodiment;
Figure 3 shows that the rear view of pendulum friction coefficient determinator in the utility model specific embodiment;
Figure 4 shows that the side view of pendulum friction coefficient determinator in the utility model specific embodiment;
Figure 5 shows that the partial enlarged drawing of A in Fig. 4;
Figure 6 shows that the amplification view of the first steering knuckle nut in the utility model specific embodiment;
Figure 7 shows that the amplification view of the second steering knuckle nut in the utility model specific embodiment;
Figure 8 shows that the cut-open view of pendulum in the utility model specific embodiment;
Figure 9 shows that contiguous block and the schematic perspective view that returns cutter groove in the utility model specific embodiment;
Figure 10 shows that the schematic perspective view of another angle of contiguous block in the utility model specific embodiment;
Figure 11 shows that the schematic perspective view of cutter in the utility model specific embodiment;
Figure 12 shows that the schematic perspective view of connecting rod in the utility model specific embodiment;
Figure 13 shows that the three-dimensional explosive view of base in the utility model specific embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is described in detail, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope that the utility model is protected.
Shown in ginseng Fig. 1 to Fig. 4, pendulum friction coefficient determinator comprises base 10, is vertically installed on the column 20 on base 10 and can rotates the pendulum 30 being installed on column 20.
Shown in Figure 12, base 10 comprises T-shaped leg 11, and three ends of T-shaped leg 11 are respectively equipped with a leveling serew 12, and the upper surface of T-shaped leg 11 is also provided with air level 13.By leveling serew 12 and air level, can play leveling to instrument, supporting role.
T-shaped leg 11 comprises front bearing 111 and rear support 112.Front bearing 111 comprises horizontally disposed the first plate 1111 and is positioned at described the first plate 1111 tops and second plate 1112 vertical with the first plate 1111, the first plate 1111 and the vertical setting of the second plate 1112, mutually played the effect of stiffening rib, cause is the whole comparatively robust of bearing 111 before this, be difficult for bending, long service life.Rear support 112 is perpendicular to the middle part of front bearing 111, be T-shaped setting with front bearing 111 integral body, rear support 112 is joined by vertical plate bending front and back, and its middle part forms the cavity running through up and down 1121, so arranges, reduced on the one hand the use of metal material, reduce costs, on the other hand, the strength ratio of rear support 112 is higher, be difficult for deformation bending, long service life.Between front bearing 111 and rear support 112, removably connect, one side of rear support 112 one end is extended with the first installation portion 1122, this first installation portion 1122 is vertically formed with mounting hole 1123, the first installation portion 1122 is rotatably fixed on front bearing 111 by screw 1124, the opposite side of rear support 112 in same one end is extended with the second installation portion 1125, on the second installation portion 1125, offer mounting groove 1126, the position of the corresponding mounting groove 1126 of front bearing 111 is provided with mounting hole 1127, the second installation portions 1125 and is fixed on front bearing 111 by screw.
Leveling serew 12 comprises leveling silk handwheel 121, check nut 122, thread cap 123 and supporting wire 124.Each end of T-shaped leg 11 is respectively equipped with the through hole 113 of a up/down perforation, the surrounding on through hole 113 tops is distributed with three mounting holes 114, thread cap 123 comprises and coordinates the main part 1231 be located in through hole 113 and autonomous body 1231 tops to the horizontally extending extension 1232 of surrounding, on extension 1232, the position of corresponding mounting hole 114 is provided with through hole 1233, between thread cap 123 and T-shaped leg 11, by screw, is fixed.Thread cap 123 has internal thread, and the outside surface of supporting wire 124 is provided with the external thread with this screw-internal thread fit, and the top of supporting wire 124 is fixing by thread surface and leveling silk handwheel 121.Check nut 122 has the internal thread matching with supporting wire 124 external threads, check nut 122 is sheathed on the outside of supporting wire 124 and is positioned at the top of thread cap 123, after leveling completes, by check nut 122, realize fixing supporting wire 124 relative positions.The bottom of supporting wire 124 is set to spherical, to form point with ground, contacts, and guarantees the accuracy of whole instrument leveling.
Column 20 comprises pole 21, elevating mechanism 22, back up pad 23, cantilever 24 and handle 25.Pole 21 is a round bar, and it is vertically installed on base 10; Elevating mechanism 22 is installed on pole 21, and can move relative to pole 21 in the vertical directions.The end setting of cantilever 24 is provided with release-push 241, for keeping, puts 30 horizontal levels and discharges the effect that pendulum falls.
Shown in ginseng Fig. 5, the top of pendulum 30 is fixed on steering knuckle 40, steering knuckle 40 is sheathed on knuckle spindle 41, and can swing with respect to knuckle spindle 41, knuckle spindle 41 is vertical to be passed back up pad 23 and is connected with handwheel 42, between handwheel 42 and knuckle spindle 41, be also provided with spring 43, by the rotation of handwheel 42, can realize the fastening effect to putting 30.
Shown in ginseng Fig. 6 and Fig. 7, steering knuckle 40 is split type setting, comprises the first steering knuckle nut 44 and the second steering knuckle nut 45.The first steering knuckle nut 44 is rotatably sheathed on knuckle spindle 41, offers between the two ends of at least two screws 441, the first steering knuckle nuts 44 and knuckle spindle 41 and be respectively equipped with bearing 442 on the first steering knuckle nut 44.The second steering knuckle nut 45 is sheathed on the outside of the first steering knuckle nut 44, and its outside surface offers between the through hole corresponding with screw 441 451, the first steering knuckle nuts 44 and the second steering knuckle nut 45 and fixes by screw.The second steering knuckle nut 45 is extended with the first installation portion 452 in the one end perpendicular to knuckle spindle 41, the first installation portion 452 fixes with the top of pendulum 30, the second steering knuckle nut 45 is provided with the second installation portion 453, the second installation portions 453 in one end of knuckle spindle 41 bearing of trends fixing with nut 454 assemblings.
Shown in ginseng Fig. 8, pendulum 30 pendulums 32 that comprise fork 31 and be installed on fork 31 bottoms.Pendulum 32 comprises hammer body shell 321, balance weight iron 322, cutter 323, contiguous block 324, returns cutter groove 325, handle 326, connecting rod 327, limiting iron 328, smooth 329 and friction disc 330.The top of hammer body shell 321 offers fork socket 3211, and fork socket 3211 is in order to the fork 31 fixing with fork 31 of planting.The top of hammer body shell 321 also offers handle aperture 3212, and the end of handle 326 extends in hammer body shell 321 by handle aperture 3212.Balance weight iron 322 is fixed on hammer body shell 321.
Shown in ginseng Figure 11, the two ends of cutter 323 are respectively equipped with a mounting hole 3231, and mounting hole 3231 sidewalls are set to guide domatic, cutter 323 is installed on the interior top of hammer body shell 321 by screw 3232, by guiding domatic effect, screw 3232 can slip in mounting hole 3231 easily, easy for installation.
Shown in ginseng Fig. 9, one end of contiguous block 324 is equipped with little axle bearing 3241 and is pressed on connecting rod 327, and the other end is connected with tension spring 3242.On the upper surface of contiguous block 324, offer groove 3243, groove 3243 is in order to hold back cutter groove 325 and to match with the bottom shape that returns cutter groove 325.The two ends of returning cutter groove 325 are respectively equipped with a mounting hole 3251, and the corresponding mounting hole 3251 in two ends of groove 3243 is provided with through hole 3244.Shown in Figure 10, the sidewall of through hole 3244 is set to guide domatic, return between cutter groove 325 and contiguous block 324 fixing by screw 3245, groove 3243 can limit back cutter groove 325 and move, so that screw is fastening, the sidewall of through hole 3244 is set to guide domatic, and screw 3245 can slip in through hole 3244 easily, convenient installation.
Shown in ginseng Figure 12, one end of connecting rod 327 connects transverse axis 3271 and is contained in the brearing bore of hammer body shell 321 one end, and the other end of connecting rod 327 is fixed with slide block rotating shaft 3272.In slide block rotating shaft 3272, be arranged with smooth 329, comprise the main part 3291 being sheathed in slide block rotating shaft 3272 and the installation portion 3292 that is formed at main part 3,291 one sides for smooth 329, installation portion 3292 has an installed surface, on this installed surface, be fixed with friction disc 330, friction disc 330 is preferably a rubber blanket.Between slide block rotating shaft 3272 and smooth 329, be provided with spring 331, the effect by spring 331 can be avoided one end perk of friction disc 330 so that friction disc 330 is realized the face of level while contacting with ground to be contacted, and the accuracy that impact is measured.Connecting rod 327 is " work " shape and arranges, comprise horizontally disposed leveling board 3273 and the first vertical panel 3274 and the second vertical panel 3275 that from leveling board 3273 downward bendings, form, the first vertical panel 3274 and the second vertical panel 3275 are oppositely arranged and perpendicular to leveling board 3273, the first vertical panel 3274 and the second vertical panel 3275 play the effect of ribs, to increase the intensity of connecting rod 327, make connecting rod 327 be difficult for bending.The two ends of the first vertical panel 3274 and the second vertical panel 3275 are also respectively arranged with mounting hole, to be connected with transverse axis 3271 with slide block rotating shaft 3272 respectively.In addition, the setting of connecting rod 327 " work " shape, can also save material, reduces costs.
Further, pendulum friction coefficient determinator also comprises position sensing unit, and position sensing unit is connected with pendulum, for measuring the pendulum angle of pendulum.In one embodiment, position sensing unit comprises Non-contact Angle Measurement unit, its for example adopt IGS05-128-T1024 type split magnetic inductive scrambler as main measuring unit scrambler or, also can adopt the split type photoelectric encoder of RTK6035-1024T type.No matter adopt which kind of scrambler all not as restriction of the present utility model.Scrambler can comprise noncontact inductive means and swiveling wheel.This design is adapted to the installation in little space and has adopted senior safeguard measure, can be used for rugged surroundings.In the embodiment of split magnetic inductive scrambler, magnetic field theory be take as basis in this Non-contact Angle Measurement unit, integration magnetic strength original paper is designed to induction type noncontact inductive means and responds to the number of teeth information on swiveling wheel, and is processed into sine wave (1Vpp) or square wave (TTL) signal with circuit calibrating signal or splitting signal.Swiveling wheel is arranged on steering knuckle, and has very high concentricity with steering knuckle axle center, guarantees beat meet the requirements prescribed for example 0.2mm scope of swiveling wheel in pendulum active procedure, and inductive means is arranged on cantilever and with swiveling wheel and keeps specific position relationship.When rotation is moved, driven rotary wheel rotates, and produces the square-wave signal being directly proportional to rotational angle in inductive means, and this signal is through gathering and be converted to angle signal, for the calculating of value.
Further, pendulum friction coefficient determinator also comprises CPU (central processing unit), CPU (central processing unit) is connected with position sensing unit communication, with the pendulum angle based on recording, according to friction factor algorithm, calculate the actual value of the friction factor in the measurand contacting when pendulum in swing arm swings, then according to predetermined calibration factor, calibrate the friction factor recording.
Further, pendulum friction coefficient determinator also comprises display 40, and display 40 is arranged in back up pad 23, and display shows the friction factor after calibration in real time.Display can adopt the Liquid Crystal Module of JLX12864G-109 type.This module can show 128 row * 64 row dot matrix monochromatic pictures, or shows the Chinese character of 8 words/OK * 4 row 16 * 16 dot matrix, or shows English, numeral, the symbol of 16 words/OK * 8 row 8 * 8 dot matrix.Windows area is 65.5mm * 38.0mm, band PCB, backlight, chase, and integrated circuit model is ST7565R.This display powerful, good stability.Can be operated under the temperature range of-20 ℃～70 ℃.Can reach 50,000 hours serviceable life (25 ℃).In one embodiment, display can show date in real time, the information such as time, sensor states, temperature, electric weight, memory capacity, measurement result.In addition, this measurement mechanism adopts the large capacity chargeable lithium cell of 8000mAh, the power saving design of coupled system, and single charge can meet the normal measurement demand that is no less than 12 hours.
Further, pendulum friction coefficient determinator also comprises temperature sensing unit, and it is for detection of the temperature on measuring point and be real-time transmitted to display, makes except showing the friction factor after calibration, also to show on display the temperature of test environment.Temperature sensor adopts MLX90614 infrared temperature sensor, and sensor adopts 4 pin metallic cylinder encapsulation, by 4 lead-in wires, is drawn and is installed on base below.Sensor provides 3.3V direct supply by system host board, and sensor top end opening is towards tested road surface, and observable temperature scope is-70 ℃ ~ 380 ℃, and resolution is 0.02 ℃.
The temperature detecting in real time sends CPU (central processing unit) to, after the friction factor recording, further according to temperature value, based on temperature correction algorithm, calculates friction factor corresponding under room temperature and is shown by display in calibration.Because system adopts infrared temperature sensor, can realize the contactless real-time measurement of surface temperature to be measured, the temperature data of measurement is directly used in the temperature correction of pendulum value measuring process.Therefore, it is Complete Synchronization that pendulum value is measured with temperature survey process, has guaranteed the accuracy of temperature correction.
It should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The above is only the application's embodiment; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection domain.
Claims (7)
1. a pendulum friction coefficient determinator, comprise base, be installed on described base top column and rotate and to be installed on the pendulum on described column, it is characterized in that: described base comprises T-shaped leg, described T-shaped leg comprises vertically disposed front bearing and rear support, and described front bearing and rear support are detachably fixing.
2. pendulum friction coefficient determinator according to claim 1, it is characterized in that: a side of described rear support one end is extended with the first installation portion, this first installation portion is rotatably fixed on front bearing, the opposite side of described rear support in same one end is extended with the second installation portion, on described the second installation portion, offer mounting groove, the position of the corresponding mounting groove of described front bearing is provided with mounting hole, between described mounting groove and mounting hole, is fixed with screw.
3. pendulum friction coefficient determinator according to claim 2, it is characterized in that: described the first installation portion is vertically formed with the first mounting hole, on described front bearing, corresponding described the first mounting hole is provided with the second mounting hole vertically, between described the first mounting hole and the second mounting hole, is provided with screw.
4. pendulum friction coefficient determinator according to claim 1, is characterized in that: described front bearing comprises horizontally disposed the first plate and is positioned at described the first plate top and second plate vertical with the first plate.
5. pendulum friction coefficient determinator according to claim 1, is characterized in that: described rear support is joined by vertical plate bending front and back, and the middle part of described rear support forms a cavity running through up and down.
6. pendulum friction coefficient determinator according to claim 1, is characterized in that: also comprise:
Position sensing unit, it is connected with pendulum, for measuring the pendulum angle of pendulum;
CPU (central processing unit), it is connected with described position sensing unit communication;
Display, is connected in described CPU (central processing unit).
7. pendulum friction coefficient determinator according to claim 6, is characterized in that: also comprise temperature sensor, described temperature sensor is connected in described display and CPU (central processing unit).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306145.XU CN203929600U (en) | 2014-06-10 | 2014-06-10 | The dismountable pendulum friction coefficient determinator of a kind of base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306145.XU CN203929600U (en) | 2014-06-10 | 2014-06-10 | The dismountable pendulum friction coefficient determinator of a kind of base |
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| Publication Number | Publication Date |
|---|---|
| CN203929600U true CN203929600U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420306145.XU Expired - Fee Related CN203929600U (en) | 2014-06-10 | 2014-06-10 | The dismountable pendulum friction coefficient determinator of a kind of base |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152196A (en) * | 2017-12-29 | 2018-06-12 | 浙江农林大学 | A kind of friction coefficient detection machine |
| CN109187332A (en) * | 2018-09-04 | 2019-01-11 | 王本勋 | A kind of express highway pavement frictional force detection platform |
-
2014
- 2014-06-10 CN CN201420306145.XU patent/CN203929600U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152196A (en) * | 2017-12-29 | 2018-06-12 | 浙江农林大学 | A kind of friction coefficient detection machine |
| CN109187332A (en) * | 2018-09-04 | 2019-01-11 | 王本勋 | A kind of express highway pavement frictional force detection platform |
| CN109187332B (en) * | 2018-09-04 | 2021-02-05 | 湖北高路公路工程监理咨询有限公司 | Highway road surface friction force testing platform |
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| 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: 20141105 Termination date: 20150610 |
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| EXPY | Termination of patent right or utility model |