NL2030337B1 - Vehicle inertia test bench with clutches - Google Patents

Vehicle inertia test bench with clutches Download PDF

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Publication number
NL2030337B1
NL2030337B1 NL2030337A NL2030337A NL2030337B1 NL 2030337 B1 NL2030337 B1 NL 2030337B1 NL 2030337 A NL2030337 A NL 2030337A NL 2030337 A NL2030337 A NL 2030337A NL 2030337 B1 NL2030337 B1 NL 2030337B1
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NL
Netherlands
Prior art keywords
roller
group
roller group
vehicle
inertia
Prior art date
Application number
NL2030337A
Other languages
Dutch (nl)
Inventor
Tang Xiangchen
Cui Jiangwei
Tian Xuesong
Gao Youlei
Zhang Wenguang
Original Assignee
Shandong Xinlingzhi Testing Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Xinlingzhi Testing Tech Co Ltd filed Critical Shandong Xinlingzhi Testing Tech Co Ltd
Priority to NL2030337A priority Critical patent/NL2030337B1/en
Application granted granted Critical
Publication of NL2030337B1 publication Critical patent/NL2030337B1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/0072—Wheeled or endless-tracked vehicles the wheels of the vehicle co-operating with rotatable rolls
    • G01M17/0074—Details, e.g. roller construction, vehicle restraining devices

Abstract

The present disclosure discloses a vehicle inertia test bench with clutches, which includes a control unit, a front roller group, a rear roller group, a flywheel group, clutches, a front and rear roller group wheelbase adjusting device, and a moving guide track of the roller group, The front roller group is supported on the moving guide track of the roller group of the vehicle inertia test bench, and left and right of the main roller of the front and rear roller group are respectively installed with clutches, According to corresponding sliding time when the left and right clutches of the main roller are connected and disconnected, the moment of inertia of the vehicle wheels can be measured when the vehicle is sliding in neutral gear, when the vehicle slides with gears, the moment of inertia of the engine flywheel and four wheels at different gears of the vehicle can be measured. Combined with the above two processes, the moment of inertia of the engine flywheel in different gears of the vehicle can be measured. The present disclosure can be used to measure the moment of inertia of vehicle wheels, the total moment of inertia of engine flywheel and wheels at different gears of the vehicle and the moment of inertia of engine flywheel at different gears of the vehicle, and has good application value.

Description

VEHICLE INERTIA TEST BENCH WITH CLUTCHES
TECHNICAL FIELD
[OI] The present disclosure relates to a technical field of vehicle inspection, in particular to a vehicle inertia test bench with clutches.
BACKGROUND ART
[02] When loading, the chassis dynamometer needs to simulate the load generated by the vehicle acceleration inertia. However, how to measure the vehicle acceleration inertia, especially the moment of inertia, lacks a fast and effective test method.
[03] A disclosed invention patent CN106989938A "method of loading and inertia to detect vehicle dynamic performance" is a method for various types of vehicles to test a transient power at a rated torque point of the engine on a chassis dynamometer with large equivalent inertia, taking a loading force and bench inertia of a power absorption device as a load. The disclosed invention patent CN107907345B " electric simulation control method for acceleration inertia of vehicle transmission system test bench " is a method for detecting an vehicle power at a specified engine speed on a roller bench equipped with an inertial flywheel, taking equivalent inertia of the bench and equivalent inertia of an vehicle rotating part as a load. The disclosed invention patent
CN106895981B "electric simulation control method of acceleration inertia of vehicle transmission test bench" provides an electric simulation control method of acceleration inertia of vehicle transmission test bench, which can accurately simulate dynamic working conditions of vehicle, so as to effectively improve the accuracy of vehicle transmission test. The disclosed invention patent CN107860588B "detection method of inertia roller gantry vehicle braking performance" is a method for detecting vehicle braking performance on the roller bench equipped with inertia flywheel, taking the equivalent inertia of the bench and the vehicle as a loading load.
[04] The above patents related to vehicle inertia use the inherent inertia of the platform to detect the dynamic performance and braking performance of the vehicle, or how to simulate the inertia of the vehicle, but lack a test method of vehicle moment of inertia.
SUMMARY
[05] The present disclosure aims to provide a vehicle inertia test bench with clutches to solve the problems proposed in the above background technology.
[06] The present disclosure provides the following technical scheme:
[07] A vehicle inertia test bench with clutches includes a front roller group, a rear roller group and a driving medium of the front and rear roller groups, and the front roller group and the rear roller group are installed on a vehicle inertia test bench frame in parallel through a roller group guide track, wherein the front roller group includes a left roller assembly, a right roller assembly, a front roller group frame, left clutches of the front roller group, right clutches of the front roller group, a flywheel group and a synchronous wheel; a structure of the rear roller group is the same as a structure of the front roller group, a front and rear roller group wheelbase adjusting device is connected between the front roller group frame and the rear roller group frame, and the front roller group and the rear roller group are driven by the driving medium of the front and rear roller groups.
[08] Compared with the prior art, the present disclosure has the beneficial effect that by controlling the engagement and disconnection of the clutch, the present disclosure can measure the moment of inertia of the vehicle wheel, the total moment of inertia of the engine flywheel and the wheel at different gears of the vehicle and the moment of inertia of the engine flywheel at different gears of the vehicle.
BRIEF DESCRIPTION OF THE DRAWINGS
[09] Fig. 1 is a schematic diagram of an overall composition of the present disclosure.
[10] Fig 2 is a front view of a front roller group of the present disclosure.
[11] Fig. 3 is a top view of the present disclosure.
[12] Fig. 4 is a schematic diagram of a measurement and control system of the present disclosure.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[13] Referring to figures 1 to 4, in the embodiment of the present disclosure, a vehicle inertia test bench with clutches includes a control unit 34, a front roller group 1, a rear roller group 2 and a front and rear roller group driving medium 7. The front roller group 1 is supported on a roller group guide track 3 of a inertia test bench frame, and the control unit 34 of a computer adjusts a distance between the front and rear roller groups through a front and rear roller group wheelbase adjusting device 12, to meet inertia detection requirements of vehicles with different wheelbase models, the front and rear roller group driving medium is driven by a retractable transmission shaft, and the front and rear roller group wheelbase adjusting device 12 is driven by compressed air.
An air lifting device 26 1s installed between the front roller group 1 and a front roller group frame 10, and the air lifting device 26 is also installed between the rear roller group 2 and the rear roller group frame 11.
[14] The front roller group 1 includes a left roller assembly 15, a right roller assembly 16, the front roller group frame 10, left clutches 23 of the front roller group, right clutches 22 of the front roller group, a flywheel group 6 and a synchronous wheel 8. There are 8 clutches, including the left clutch 23 of the front roller group, the right clutch 22 of the front roller group, the left clutch 17 of the rear roller group and the right clutch 18 of the rear roller group, all of which adopt electromagnetic clutches.
[15] Each roller assembly includes a main roller 30, a main roller bearing seat 31, an auxiliary roller 33, an auxiliary roller bearing seat 32, a sensing roller 9, a roller speed sensor 39, and a sensing roller speed sensor 40. Both ends of the auxiliary roller 33 of the front roller group 1 are fixedly supported on the front roller group frame 10 through the auxiliary roller bearing seat 32, and both ends of the main roller 30 are installed on the front roller group frame 10 through the main roller bearing seat 31. The sensing roller 9 is installed between the main roller 30 and the auxiliary roller 33. The sensing roller 9 is supported on the front roller group frame 10 through a sensing roller support spring 41, and the sensing roller 9 is arranged in parallel close to the main roller 30. One end of the sensing roller 9 is installed with the sensing roller speed sensor 40, and the sensing roller speed sensor 40 is a photoelectric encoder. The main roller 30 and the auxiliary roller 33 are mechanically driven by a chain. One of left clutches 23 of the front roller group is installed between a main roller sprocket 14 of the left roller assembly of the front roller group and a flywheel group bearing seat 35 of the front roller group, and the other is installed between the synchronizing wheel 8 and the main roller bearing seat 31 of the right roller assembly 16 of the front roller group 1. One of right clutches 22 of the front roller group is installed between the main roller bearing seat 31 and the synchronizing wheel 8 of the left roller assembly 15 of the front roller group 1, and the other is installed between the flywheel group bearing seat 35 of the front roller group and the main roller sprocket 4 of the right roller assembly of the front roller group. The synchronizing wheel 8 is installed between the right clutch 22 of the front roller group and the left clutch 23 of the front roller group.
[16] The main roller 30 of the rear roller group 2 is fixedly supported on the rear roller group frame 11 through the main roller bearing seat 37 of the rear roller group, and the auxiliary roller 33 of the rear roller group is fixedly supported on the rear roller group frame 11 through the auxiliary roller bearing seat 38 of the rear roller group. The sensing roller 9 is installed between the main roller 30 and the auxiliary roller 33, the sensing roller 9 is supported on the rear roller group frame 11 through the sensing roller support spring 41, and the sensing roller speed sensor 40 is installed at one end of the sensing roller 9. The main roller 30 and the auxiliary roller 33 are mechanically driven by a chain. One of left clutches 17 of the rear roller group is installed between the main roller sprocket 24 of the left roller assembly of the rear roller group and a flywheel group bearing seat 36 of the rear roller group, and the other is installed between the synchronizing wheel 8 and the main roller bearing seat 37 of the rear roller group. One of the right clutches 18 of rear roller group is installed between the main roller bearing seat 37 of the rear roller group and the synchronizing wheel 8, and the other is installed between the flywheel group bearing seat 36 of the rear roller group and the main roller sprocket 25 of the right roller assembly of the rear roller group. The synchronizing wheel 8 is installed between the right clutch 18 of the rear roller group and the left 5 clutch 17 of the rear roller group.
[17] Corresponding front and rear roller group wheelbase sensor 13 is installed on the front roller group frame 10 and the rear roller group frame 11.
[18] The control unit 34 is respectively connected to the front and rear roller group wheelbase sensor 13, the roller speed sensor 39 and the sensing roller speed sensor 40, as well as the front and rear roller group wheelbase adjusting device 12, the left clutch 17 of the rear roller group, the right clutch 18 of the rear roller group, the right clutch 22 of the front roller group, the left clutch 23 of the front roller group and the air lifting device 26.
[19] In order to increase the moment of inertia of a rotating part of the roller group, flywheel groups are added on the left and right of the main roller of the front and rear roller group respectively. When measuring the moment of inertia of the vehicle wheels and when eight clutches including the right clutches 22 of the front roller group, the left clutches 23 of the front roller group, the left clutches 17 of the rear roller group and the right clutches 18 of the rear roller group are connected, the vehicle drives the vehicle inertia test bench to accelerate to a set speed, the vehicle is set to neutral, the control unit 34 controls the right clutch 22 of the front roller group on the left side of the front roller group 1 to disconnect, the left clutch 23 of the front roller group on the right side of the front roller group 1 to disconnect, controls the right clutch 18 of the rear roller group on the left side of the rear roller group 2 to disconnect, and the left clutch 17 of the rear roller group on the right side of the rear roller group 2 to disconnect. An actual sliding time of the left front wheel in a set speed range is measured as tl, an actual sliding time of the right front wheel in the set speed range is measured as t2, an actual sliding time of the left rear wheel in the set speed range 1s measured as 13, and an actual sliding time of the right rear wheel in the set speed range is measured as t4. After that,
when 8 clutches including the right clutches 22 of the front roller group, the left clutches 23 of the front roller group, the left clutches 17 of the rear roller group, and the right clutches 18 of the rear roller group are connected, after the vehicle drives the vehicle inertia test bench and accelerates to the set speed, the vehicle is set to neutral and all clutches are disconnected. An actual coasting time of the left front wheel of the vehicle in a set speed interval is measured as t5, and an actual coasting time of the right front wheel of the vehicle in the set speed interval is measured as tó. An actual coasting time of the left rear wheel of the vehicle in the set speed range is measured as t7, and an actual coasting time of the right rear wheel of the vehicle in the set speed range is measured as t8. Since the inertia of the left roller assembly 15 of the front roller group 1 of the vehicle inertia test bench is a known quantity I1, and the inertia of the flywheel group 6 connected to the left roller assembly 15 of the front roller group 1 is a known quantity 12, the inertia Ilf of the left front wheel of the vehicle can be calculated by using the mechanical principle. Since the inertia of the right roller assembly 16 of the front roller group 1 of the vehicle inertia test bench is a known quantity 13, and the inertia of the flywheel group 6 connected to the right roller assembly 16 of the front roller group 1 is a known quantity 14, the inertia Irf of the right front wheel of the vehicle can be calculated by using the mechanical principle. Since the inertia of the left roller assembly 15 of the rear roller group 2 of the vehicle inertia test bench is a known quantity I5, the inertia of the flywheel group 6 connected to the left roller assembly 15 of the rear roller group 2 is a known quantity 16. The inertia Ilr of the left rear wheel of the vehicle can be calculated by using the mechanical principle. Since the inertia of the right roller assembly 16 of the rear roller group 2 of the vehicle inertia test bench is a known quantity 17, and the inertia of the flywheel group 6 connected to the right roller assembly 16 of the rear roller group 2 is a known quantity 18, the inertia Irr of the right rear wheel of the vehicle can be calculated by using the mechanical principle.
[20] When measuring a total moment of inertia of the engine flywheel and wheels at different gears of the vehicle, when 8 clutches including the right clutches 22 of the front roller group, the left clutches 23 of the front roller group, the left clutches 17 of the rear roller group and the right clutches 18 of the rear roller group are connected, the vehicle drives the vehicle inertia test bench to accelerate to the set speed, releases the accelerator pedal and slides in gear. The control unit 34 controls the right clutches 22 of the front roller group on the left side of the front roller group 1 to disconnect, controls the left clutches 23 of the front roller group on the right side of the front roller group 1 to disconnect, controls the right clutches 18 of the rear roller group on the left side of the rear roller group 2 to disconnect, and controls the left clutches 17 of the rear roller group on the right side of the rear roller group 2 to disconnect. An actual coasting time of the left front wheel, right front wheel, left rear wheel and right rear wheel of the vehicle in the set speed range is measured as tll. After that, when the eight clutches including the right clutches 22 of the front roller group, the left clutches 23 of the front roller group, the left clutches 17 of the rear roller group and the right clutches 18 of the rear roller group are connected, after driving the vehicle inertia test bench to accelerate to the set speed, the vehicle releases the accelerator pedal and slides in the same gear as the previous process, and disconnects all clutches of the vehicle inertia test bench. An actual sliding time of the left front wheel, right front wheel, left rear wheel and right rear wheel in the set speed range is measured as t12. Since the inertia of the front and rear roller groups of the vehicle inertia test bench is a known quantity 111, and the inertia of the flywheel group 6 connected to the roller group is a known quantity 112, the total moment of inertia It of the engine flywheel and wheel can be calculated by using the mechanical principle, and in the same way, the total moment of inertia of the engine flywheel and wheel can be measured when the vehicle is in different gears.
[21] Combining the above two processes, the total moment of inertia It of the engine flywheel and wheels measured at different gears of the vehicle can be subtracted from the measured moment of inertia of the four wheels to measure the moment of inertia of the engine flywheel at different gears of the vehicle.
[22] The driving medium 7 of the front and rear group of the present disclosure can also adopt toothed belt drive or chain drive.
[23] The front and rear roller group wheelbase adjusting device 12 of the present disclosure can also be driven by hydraulic pressure or motor.
[24] The present disclosure can also add one or more groups of the front roller group and roller group transmission device before the front roller group 1 to detect the inertia of multi axle vehicle.

Claims (1)

Conclusies L Voertuigtraagheidstestbank met koppelingen, die een voorste rollergroep, een achterste rollergroep en een aandrijfmedium omvat, en waarbij de voorste rollergroep en de achterste rollergroep parallel geïnstalleerd zijn op een voertuigtraagheidstestbankframe via een rollergroepgeleidingsspoor, waarbij de voorste rollergroep een linker rollersamenstel, een rechter rollersamenstel, een voorste rollergroepframe, een linker koppeling, een rechter koppeling, een vliegwielgroep en een tandriemschijf omvat; waarbij een structuur van de achterste rollergroep hetzelfde 1s als een structuur van de voorste rollergroep, waarbij een voorste- en achtersterollergroepwielbasisaanpasinrichting verbonden is tussen het voorste rollergroepframe en het achterste rollergroepframe, en waarbij de voorste rollergroep en de achterste rollergroep aangedreven zijn door het aandrijfmedium; waarbij elk rollersamenstel een hoofdroller, een hoofdrollerlagerstoel, een hulproller, een hulprollerlagerstoel, een meetroller, een rollersnelheidssensor en een meetrollersnelheidssensor omvat, en waarbij beide uiteinden van de hulproller van de voorste rollergroep bevestigd zijn op het voorsterollergroepframe via de hulprollerlagerstoel, en waarbij beide uiteinden van de hoofdroller geïnstalleerd zijn op het voorsterollergroepframe via de hoofdrollerlagerstoel, waarbij de meetroller geïnstalleerd is tussen de hoofdroller en de hulproller, waarbij de meetroller gesteund is op het voorsterollergroepframe via een meetrollersteunveer, en waarbij de meetroller geïnstalleerd is met een snelheidssensor; waarbij een hoofdrollerkettingwiel geïnstalleerd is op een linker uiteinde van de hoofdroller van het linker rollersamenstel, waarbij een linkerkoppeling geïnstalleerd is tussen het hoofdrollerkettingwiel en een vliegwielgroeplagerstoel van de voorste rollergroep, waarbij de vliegwielgroeplagerstoel van de voorste rollergroep geïnstalleerd is tussen de linker koppeling van de voorste rollergroep en de vliegwielgroep, waarbij de hoofdrollerlagerstoel geïnstalleerd is op een rechter uiteinde van de hoofdroller van het linker rollersamenstel, en waarbij een rechter koppeling geïnstalleerd is tussen de hoofdrollerlagerstoel en een tandriemwiel, waarbij de hoofdrollerlagerstoel geinstalleerd is op een linker uiteinde van de hoofdroller van het rechter rollersamenstel, waarbij een rechter koppeling van de voorste rollergroep geïnstalleerd is tussen de hoofdrollerlagerstoel en de tandriemschijf, waarbij een hoofdrollerkettingwiel van het rechter rollersamenstel geinstalleerd is op een rechter uiteinde van de hoofdroller van het rechter rollersamenstel, en waarbij de rechter koppeling van de voorste rollergroep geïnstalleerd is tussen het hoofdrollerkettingwiel van het rechter rollersamenstel en de lagerstoel van de vliegwielgroep, waarbij de lagerstoel van de vliegwielgroep geinstalleerd is tussen de rechter koppeling en de vliegwielgroep.Claims L Vehicle inertia test bench with links, comprising a front roller group, a rear roller group and a driving medium, and the front roller group and the rear roller group are installed in parallel on a vehicle inertia test bench frame through a roller group guide track, the front roller group having a left roller assembly, a right roller assembly, a front roller group frame, a left clutch, a right clutch, a flywheel group and a timing belt pulley; wherein a structure of the rear roller group is the same as a structure of the front roller group, wherein a front and rear roller group wheel base adjusting device is connected between the front roller group frame and the rear roller group frame, and wherein the front roller group and the rear roller group are driven by the driving medium; each roller assembly comprising a main roller, a main roller bearing bracket, an auxiliary roller, an auxiliary roller bearing bracket, a gauge roller, a roller speed sensor and a gauge roller speed sensor, and both ends of the auxiliary roller of the front roller group are attached to the front roller group frame via the auxiliary roller bearing bracket, and both ends of the front roller group the main roller is installed on the front trailing roller group frame through the main roller bearing bracket, the measuring roller is installed between the main roller and the auxiliary roller, the measuring roller is supported on the front trailing roller group frame through a measuring roller support spring, and the measuring roller is installed with a speed sensor; wherein a main roller sprocket is installed on a left end of the main roller of the left roller assembly, wherein a left linkage is installed between the main roller sprocket and a flywheel group bearing bracket of the front roller group, wherein the flywheel group bearing bracket of the front roller group is installed between the left linkage of the front roller group and the flywheel assembly, wherein the main roller bearing seat is installed on a right end of the main roller assembly of the left roller assembly, and wherein a right linkage is installed between the main roller bearing seat and a timing belt sprocket, the main roller bearing seat is installed on a left end of the main roller assembly of the right roller assembly, having a right front roller assembly clutch installed between the main roller bearing bracket and the timing belt pulley, having a right roller assembly main roller sprocket installed on a right end of the right roller assembly main roller, and having the right front roller assembly installed is between the main roller sprocket of the right roller assembly and the flywheel group bearing bracket, with the flywheel group bearing bracket installed between the right clutch and the flywheel group.
NL2030337A 2021-12-29 2021-12-29 Vehicle inertia test bench with clutches NL2030337B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2030337A NL2030337B1 (en) 2021-12-29 2021-12-29 Vehicle inertia test bench with clutches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2030337A NL2030337B1 (en) 2021-12-29 2021-12-29 Vehicle inertia test bench with clutches

Publications (1)

Publication Number Publication Date
NL2030337B1 true NL2030337B1 (en) 2023-07-04

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ID=87202382

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Application Number Title Priority Date Filing Date
NL2030337A NL2030337B1 (en) 2021-12-29 2021-12-29 Vehicle inertia test bench with clutches

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Country Link
NL (1) NL2030337B1 (en)

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