CN203929301U - Vehicle axles dynamic load measuring instrument - Google Patents
Vehicle axles dynamic load measuring instrument Download PDFInfo
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- CN203929301U CN203929301U CN201420364837.XU CN201420364837U CN203929301U CN 203929301 U CN203929301 U CN 203929301U CN 201420364837 U CN201420364837 U CN 201420364837U CN 203929301 U CN203929301 U CN 203929301U
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- vehicle
- fixed
- rotation platform
- mounting platform
- platform
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Abstract
Vehicle axles dynamic load measuring instrument of the present utility model, comprises that being fixed on a plurality of on vehicle hub adds long bolt and be fixed on the rotation platform adding on long bolt, and the surrounding of rotation platform offers and the bolt hole that adds long bolt and match; Be characterised in that: also comprise mounting platform, scrambler and fixed bar, the center position of rotation platform offers bolt hole, and mounting platform is fixed on bearing rod rotationally; Scrambler is fixed on mounting platform, and during measurement, the nonrotational position of the upper end of fixed bar and car body fixes; On rotation platform, be provided with the acceleration transducer for measuring vehicle driving process vertical direction acceleration.Vehicle axles dynamic loading measuring instrument of the present utility model, according to the weight of the acceleration of the speed of the vehicle recording, vertical direction and vehicle, can analyze the wheel shaft dynamic load of vehicle, for pavement construction and maintenance provide reliable theoretical foundation.
Description
Technical field
The utility model relates to a kind of vehicle axles dynamic load measuring instrument, in particular, relates in particular to the vehicle axles dynamic load measuring instrument that a kind of speed by vehicle and vertical acceleration are analyzed.
Background technology
In China's bituminous pavement design theory, vehicular load is considered as to dead load or Approximate Equivalent dead load.Through development for many years, dead load pattern Pavement Design theory is more perfect, use wider, by project planner is accepted.This hypothesis is lower, vehicle-mounted hour in the speed of a motor vehicle, and dead load pattern Pavement Structure Design is fine.But from the trend of highway in China transport development, the highway communication of China has now entered the heavy traffic stage, and running velocity is more and more faster.From function path vehicle, with certain speed, travelling is certain event, and stationary vehicle is incident.Vehicle in reality is all heavily loaded hot-short, and what it put on road surface is dynamic loads, is all dynamic loads of random variation of a kind of amplitude size and action space.Existence due to dynamic loads, make differing greatly between the actual force of road pavement in static load pattern and Vehicle Driving Cycle process, the dynamics of pavement structure is also far from static characteristic and can describes, these defects and difference, for existing design theory and method, cannot fundamentally solve, and road surface has occurred many with static theories unaccountable breakoff phenomenons, as loose in fatigue crack, material etc.The moving loads that the damage and fracture of pavement structure and heavy vehicle produce is closely related, illustrate the failure mechanism that bituminous pavement dynamic effect produces, will promote design, construction, maintenance and the reconstruction work of pavement structure, for the development of road subject is laid a solid foundation.
The method of obtaining vehicular load is mainly weighing system at present, has at present static weighing and dynamic weighing system.When static weighing requires each weighing, vehicle must stop, thereby must suspend traffic, and can not adapt to the weighing of jumbo traffic loading; Dynamic Weighing Technology (Weigh-In-Motion WIM) provides a kind of technological means that automatically records and process the data such as vehicle weight, vehicle classification, the speed of a motor vehicle in the situation that of uninterrupted traffic.A Highway Weigh-in-Motion Systems is a set of sensor and supports instrument, can be used to measure appearance and the dynamic tire force thereof at a driving vehicle of locality special time.Dynamic weighing when measuring except actual axial recast is used for measuring sensor-based system, the perturbed force that also has many factors to produce, the Vehicular vibration causing as the vibration of the speed of a motor vehicle, vehicle self, road surface, tire characteristics, environmental factor etc., during measurement, actual axial is heavy is often submerged in various perturbed forces, and this will seriously affect the precision of dynamic weighing.The vehicle that driving vehicle on Current Highway is understood by the effect Shi Wei highway communication department of dynamic weighing system forms, axle carries spectrum and overweight degree, analyze the influence degree that overweight vehicle road pavement is damaged, and formulating corresponding control measures and laws and regulations on the management, Ye Wei highway operation department provides effective technological means by car weight charge simultaneously.Weighing system can only one-point measurement, cannot detect in real time the dynamic loads that vehicle imposes on road surface.Vehicle dynamic load is both relevant with the load-carrying of vehicle, relevant with car speed, surface evenness and vehicle suspension parameters again, the weighing system of fixed point cannot be realized the Real-Time Monitoring of the dynamic load of vehicle, so cannot reflect the temporal signatures of vehicle dynamic load and the relation between dynamic load feature and surface evenness.
Summary of the invention
The utility model is in order to overcome the shortcoming of above-mentioned technical matters, the vehicle axles dynamic load measuring instrument that provides a kind of speed by vehicle and vertical acceleration to analyze.
Vehicle axles dynamic load measuring instrument of the present utility model, comprises that being fixed on a plurality of on vehicle hub adds long bolt and be fixed on the rotation platform adding on long bolt, and the surrounding of rotation platform offers and the bolt hole that adds long bolt and match; Its special feature is: also comprise mounting platform, scrambler and fixed bar, the center position of described rotation platform offers the bolt hole matching with bearing rod, and mounting platform is fixed on bearing rod by bearing rotationally; Scrambler is fixed on mounting platform, and the input shaft of scrambler is fixedly connected with bearing rod through shaft coupling, and fixed bar and rotation platform fix, and during measurement, the nonrotational position of the upper end of fixed bar and car body fixes; On rotation platform, be provided with the acceleration transducer for measuring vehicle driving process vertical direction acceleration.
Add long bolt and be fixed on vehicle hub, rotation platform is fixed on and adds on long bolt, and rotation platform can be rotated with the rotation of wheel.For mounting platform, by bearing, be fixed on bearing rod, and on mounting platform, be provided with the fixed bar fixing with car body, make in the car excessively of rotation platform with the rotation of travelling of vehicle, mounting platform becomes stationary state with respect to car body, to acceleration transducer is set on mounting platform, the acceleration of vertical direction in Vehicle Driving Cycle process is measured.The input shaft of scrambler fixes through shaft coupling and bearing rod, and the input shaft of scrambler is rotated with the rotation of rotation platform, and then realizes the measurement to Vehicle Speed.
Vehicle axles dynamic load measuring instrument of the present utility model, described mounting platform is U-lag shape, all offers through hole on the two sides of U-lag mounting platform, and the through hole of mounting platform one side matches with bearing, and the through hole of opposite side matches with scrambler.
Vehicle axles dynamic load measuring instrument of the present utility model, described in add long bolt middle part be provided with boss or one end is provided with lengthening cap.
Vehicle axles dynamic load measuring instrument of the present utility model, described in add long bolt and fix by the first nut and rotation platform, bearing rod fixes by the second nut and rotation platform.
The beneficial effects of the utility model are: vehicle axles dynamic loading measuring instrument of the present utility model, rotation platform is fixed on vehicle hub by adding long bolt, bearing rod is fixed on the center position of rotation platform, scrambler fixes by shaft coupling and bearing rod, utilizes scrambler to realize the measurement to car speed; Mounting platform is fixed on bearing rod by bearing, and on mounting platform, be provided with the fixed bar fixing with car body, mounting platform is not rotated with the rotation of rotation platform, be convenient to fixedly acceleration transducer, Vehicle Driving Cycle is crossed in car the acceleration on vertical direction is measured.According to the weight of the acceleration of the speed of the vehicle recording, vertical direction and vehicle, can analyze the wheel shaft dynamic load of vehicle, for pavement construction and maintenance provide reliable theoretical foundation.
Accompanying drawing explanation
Fig. 1 is the structural representation of vehicle axles dynamic load measuring instrument of the present utility model;
Fig. 2 is the explosive view of vehicle axles dynamic load measuring instrument of the present utility model;
Fig. 3 is the structural representation that is applied to the vehicle axles dynamic load measuring instrument on cargo vehicle;
Fig. 4 is the structural representation of rotation platform in the utility model;
Fig. 5 is the structural representation of mounting platform in the utility model.
In figure: 1 adds long bolt, 2 bearing rods, 3 rotation platforms, 4 first nuts, 5 second nuts, 6 bearings, 7 mounting platforms, 8 shaft couplings, 9 fixed bars, 10 scramblers, 11 boss, 12 long nuts, 13 through holes.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As depicted in figs. 1 and 2, provided structural representation and the explosive view of vehicle axles dynamic load measuring instrument of the present utility model, it comprises and adds long bolt 1, bearing rod 2, rotation platform 3, mounting platform 7, shaft coupling 8, fixed bar 9, scrambler 10; The shown quantity that adds long bolt 1 is for excessively individual, add one end of long bolt 1 and the wheel hub of vehicle fixes, the other end and rotation platform 3 fix, as shown in Figure 4, provided the structural representation of rotation platform, the surrounding of shown rotation platform 3 offers and the through hole 13 that adds long bolt 1 and match.By the first nut 4 with add coordinating of long bolt 1, rotation platform 3 can be firmly fixed at and add on long bolt 1.The center position of rotation platform 3 offers the through hole matching with bearing rod 2, and bearing rod 2 is fixed on the center position of rotation platform 3 by the second nut 5, and in the process of rotating at rotation platform 3 like this, bearing rod 2 can rotate with it.
Shown mounting platform 7 is U-lag shape, on the biside plate of the mounting platform 7 of U-lag shape, all offer logical 13, provided as shown in Figure 5 the structural representation of mounting platform, in the through hole of mounting platform 7 one sides, be provided with the bearing 6 matching with bearing rod 2, scrambler 10 is fixed on the through hole of the opposite side of mounting platform 7.The input shaft of scrambler 10 fixes by shaft coupling 8 and bearing rod 2 through through hole, and like this, in the process of rotating with vehicle at rotation platform 3, bearing rod 2 can drive the input shaft of scrambler 10 to rotate together, realizes the measurement to Vehicle Speed.
Shown fixed bar 9 fixes with mounting platform 7, is that fixed bar 9 fixes with the nonrotational position of vehicle, to guarantee that mounting platform 7 becomes stationary state with respect to car body in use.Shown 7 one-tenth horizontality settings of mounting platform, on mounting platform, be fixed with the acceleration transducer due to vertical direction acceleration in measuring vehicle driving process, acceleration transducer can adopt 3-axis acceleration sensor, carry out three acceleration analyses in direction, the acceleration value of a vertical direction of only picking up the car.Obtaining the speed of vehicle, on the basis of the acceleration of vertical direction, weight in conjunction with vehicle, can the wheel shaft dynamic loading of vehicle be calculated and be analyzed, and then the stress of road pavement analyzes, for construction, maintenance and the maintenance on road surface provides the reference frame of science.
The middle part that adds long bolt 1 in Fig. 1 and Fig. 2 is provided with boss 11, to realize the position-limiting action to rotation platform 3, this kind of version add the measurement that long bolt 1 is applicable to car wheel shaft dynamic loading.In Fig. 3, shown one end that adds long bolt 1 is fixed with long nut 12, this structure add long bolt 1 for matching with the wheel hub of truck, in order to realize the measurement to truck wheel shaft dynamic loading.
Acceleration transducer can adopt 3-axis acceleration sensor, and as adopted the sensor that model is GY-521, its function and feature are: power supply: the inner low voltage difference voltage stabilizing of 3-5v(); Communication mode: standard I IC communication protocol; Built-in chip type 16bit AD converter, 16 bit data outputs; Power supply: 3-5v.It is the incremental-rotating coder of 400P/R that scrambler 10 can adopt model, the counting pulse signal that can identify direction by grating disc and the optocoupler generation of rotation; Performance: 400 pulses often turn; Operating voltage: 5-24V, 1000 revs/min of maximum machine rotating speeds.
Vehicle axles dynamic load measuring instrument installation method of the present utility model is (take and detect car as example):
(1) fastening screw in car hub is replaced with and adds long bolt 1, thereby lengthen vehicle tyre fastening screw;
(2) rotation platform 3 is installed adding on long bolt 1, and is carried out fastening with the first nut 4;
(3) bearing rod 2 is installed on rotation platform, and is carried out fastening with the second nut 5;
(5) bearing 6 is arranged on the through hole of mounting platform 7 one sides;
(6) mounting platform 7 of installing bearing 6 is arranged on bearing rod 2;
(7) in other one end of mounting platform 7, install scrambler 10, and with fastened by screw;
(8) one end of shaft coupling 8 is arranged on bearing rod 2, install on the input shaft of scrambler 10 one end in addition, realizes the synchronous rotation of bearing rod 2 and scrambler 10, thereby can measure faster rotating wheel;
(9) on mounting platform 7, acceleration transducer is installed, and with fastened by screw; In order to prevent the short circuit of sensor and mounting platform 7, need on mounting platform 7, smear one deck epoxy resin;
(10) fixed bar 9 is arranged on assembling platform 7, and fastening with nut;
(11) fixed bar 9 is connected on compartment, meeting fixed bar can slide up and down, but requirement that can not translation, reaches acceleration transducer mounting platform Vertical Free Vibration but the object that can not rotate;
(12) degree of will speed up sensor is connected with the computing machine with computing function with scrambler 10 data lines;
(13) degree of will speed up signal is converted into vibration acceleration, then is converted into axletree oscillatory load, and code device signal is converted to vehicle velocity signal, thereby can realize the real time correlation measurement of car speed and axletree dynamic load.
Claims (4)
1. a vehicle axles dynamic load measuring instrument, comprises that being fixed on a plurality of on vehicle hub adds long bolt (1) and be fixed on the rotation platform (3) adding on long bolt, and the surrounding of rotation platform offers and the bolt hole that adds long bolt and match; It is characterized in that: also comprise mounting platform (7), scrambler (10) and fixed bar (9), the center position of described rotation platform offers the bolt hole matching with bearing rod (2), and mounting platform is fixed on bearing rod by bearing (6) rotationally; Scrambler is fixed on mounting platform, and the input shaft of scrambler is fixedly connected with bearing rod through shaft coupling (8), and fixed bar and rotation platform fix, and during measurement, the nonrotational position of the upper end of fixed bar and car body fixes; On rotation platform, be provided with the acceleration transducer for measuring vehicle driving process vertical direction acceleration.
2. vehicle axles dynamic load measuring instrument according to claim 1, it is characterized in that: described mounting platform (7) is U-lag shape, on the two sides of U-lag mounting platform, all offer through hole (13), the through hole of mounting platform one side matches with bearing (6), and the through hole of opposite side matches with scrambler (10).
3. vehicle axles dynamic load measuring instrument according to claim 1 and 2, is characterized in that: described in add long bolt (1) middle part be provided with boss (11) or one end and be provided with and lengthen cap (12).
4. vehicle axles dynamic load measuring instrument according to claim 1 and 2, is characterized in that: described in add long bolt (1) and fix by the first nut (4) and rotation platform (3), bearing rod (2) fixes by the second nut (5) and rotation platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364837.XU CN203929301U (en) | 2014-07-03 | 2014-07-03 | Vehicle axles dynamic load measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364837.XU CN203929301U (en) | 2014-07-03 | 2014-07-03 | Vehicle axles dynamic load measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203929301U true CN203929301U (en) | 2014-11-05 |
Family
ID=51825102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364837.XU Withdrawn - After Issue CN203929301U (en) | 2014-07-03 | 2014-07-03 | Vehicle axles dynamic load measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203929301U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122022A (en) * | 2014-07-03 | 2014-10-29 | 山东交通学院 | Automobile axle dynamic load measuring instrument and evaluation method |
| CN105181201A (en) * | 2015-07-18 | 2015-12-23 | 广西大学 | Test method of pressure between vehicle and ground in driving |
| CN110553851A (en) * | 2018-06-04 | 2019-12-10 | 密西根科技公司 | Wheel force transducer stator angle correction apparatus and system |
-
2014
- 2014-07-03 CN CN201420364837.XU patent/CN203929301U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122022A (en) * | 2014-07-03 | 2014-10-29 | 山东交通学院 | Automobile axle dynamic load measuring instrument and evaluation method |
| CN104122022B (en) * | 2014-07-03 | 2016-03-02 | 山东交通学院 | Vehicle axles dynamic load measuring instrument and assessment method |
| CN105181201A (en) * | 2015-07-18 | 2015-12-23 | 广西大学 | Test method of pressure between vehicle and ground in driving |
| CN110553851A (en) * | 2018-06-04 | 2019-12-10 | 密西根科技公司 | Wheel force transducer stator angle correction apparatus and system |
| US11680872B2 (en) | 2018-06-04 | 2023-06-20 | Michigan Scientific Corporation | Wheel force transducer stator angle correction device |
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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: 20141105 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |