CN210571360U - Fatigue test device for rubber lifting lugs of exhaust system - Google Patents
Fatigue test device for rubber lifting lugs of exhaust system Download PDFInfo
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- CN210571360U CN210571360U CN201922112073.0U CN201922112073U CN210571360U CN 210571360 U CN210571360 U CN 210571360U CN 201922112073 U CN201922112073 U CN 201922112073U CN 210571360 U CN210571360 U CN 210571360U
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Abstract
The utility model provides a fatigue test device of exhaust system rubber lug, including the experimental box, its inside heating unit and the support element and the experiment parameter control unit of simulation rubber lug stress state that set up simulation service environment temperature, wherein, the support element is including the first movable block and the second movable block that are used for the hanging hole of fixed rubber lug respectively, and wherein, first movable block is connected with pull rod mechanism for make rubber lug receive the tensile of setting for the load, the second movable block is connected with excitation mechanism, is used for making rubber lug receive the vibration of setting for the frequency, experiment parameter control unit include to pull rod mechanism conveying pulling force parameter and to excitation mechanism conveying frequency parameter. The device can simulate the working condition of the rubber lifting lug in all directions, and has complete experimental functions, low use cost and good economic performance.
Description
Technical Field
The utility model belongs to the technical field of mechanical properties test equipment, specific saying relates to a fatigue test device of exhaust system rubber lug.
Background
The rubber is widely used in the automobile vibration isolation system due to high elasticity and damping characteristics, wherein the rubber vibration isolation system of the exhaust system consists of a lifting lug hook and a rubber lifting lug, and mainly has the functions of suspending the exhaust system below an automobile chassis, ensuring that the exhaust system does not generate displacement interference with other parts in the running process of a vehicle, isolating the vibration transmitted to the automobile chassis by the exhaust system and reducing the vibration noise of the exhaust system.
Because the rubber lifting lug is subjected to static load and dynamic load simultaneously and is in a working state under a high-temperature condition for a long time, the performance requirement of the rubber lifting lug is very strict, so that an accurate experiment must be carried out before the rubber lifting lug is used, and technical parameters of the rubber lifting lug, such as static/dynamic rigidity, cycle frequency of fatigue fracture and the like, are mastered in detail. Most manufacturers at present lack special experimental equipment, but equipment applied to rubber lug fatigue tests is complex in internal component mechanical parts, high in operation technology difficulty, high in use cost and maintenance cost and not suitable for popularization and use of common manufacturers.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an experimental device that can effectively detect rubber lug fatigue life and compact structure, convenient operation.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a fatigue test device of exhaust system rubber lug which characterized in that: including the experimental box, its inside heating unit and the support unit and the experiment parameter control unit of simulation rubber lug stress state that set up simulation service environment temperature, wherein, the support unit is including the first movable block and the second movable block that are used for the hanging hole of fixed rubber lug respectively, and wherein, first movable block is connected with link mechanism for make the rubber lug receive the tensile of setting for the load, the second movable block is connected with excitation mechanism, is used for making the rubber lug receive the vibration of setting for the frequency, experiment parameter control unit include to link mechanism conveying pulling force parameter and to excitation mechanism transfer frequency parameter.
The fatigue test device for the rubber lifting lug of the exhaust system is characterized by further comprising the following components in part by weight:
the first movable block and the second movable block are parallel laths, a plurality of jacks are arranged on the laths, and the jacks are connected with the hanging holes of the rubber lifting lugs through pin shafts;
the pull rod mechanism comprises a support frame arranged at the upper part of the experiment box, a lead screw is fixed in the support frame, the tail end of the lead screw is connected with the first movable block through a force measuring sensor, and the force measuring sensor is electrically connected with the experiment parameter control unit;
the screw rod is an electric screw rod electrically connected with the experimental parameter control unit, or the screw rod is a threaded rod matched with a nut fixed in the support frame, and a spoke handle is arranged at the upper end of the threaded rod;
the excitation mechanism comprises a speed reducing motor arranged in a pedestal at the lower part of the test box, the speed reducing motor is connected with an actuator through a transmission shaft, the end part of a piston rod of the actuator is connected with the second movable block, and the speed reducing motor is electrically connected with the experimental parameter control unit;
the heating unit comprises electric heating rods respectively arranged at the top and the bottom of the test box and a temperature sensor arranged in the test box, and the temperature sensor is electrically connected with the experiment parameter control unit;
-the experimental parameter control unit is a PLC controller.
The utility model provides a fatigue test device of exhaust system rubber lug compares with prior art, has following advantage: the fatigue test device comprises a test box, wherein a heating unit for simulating the temperature of the use environment, a supporting unit for simulating the stress state of the rubber lifting lug and a test parameter control unit are arranged in the test box; secondly, because the supporting unit in the test box comprises a first movable block and a second movable block which are used for respectively fixing the hanging holes of the rubber lifting lugs, the first movable block is connected with the pull rod mechanism and used for enabling the rubber lifting lugs to be stretched under a set load, the second movable block is connected with the vibration excitation mechanism and used for enabling the rubber lifting lugs to be vibrated under a set frequency, the experimental parameter control unit comprises a device for transmitting a tension parameter to the pull rod mechanism and a frequency parameter to the vibration excitation mechanism, the structural layout is compact, the processing and the manufacturing are simple and convenient, the experimental conditions are convenient to regulate and control, the technical performance data of the rubber lifting lugs can be accurately mastered, and the experimental parameter control unit of the device is a PLC controller and is electrically connected with a force measuring sensor of the pull rod mechanism, a speed reducing motor of the vibration excitation mechanism and a temperature sensor in the test box, the automatic regulation and control of the experimental process are realized, and the, and manual experiment errors are avoided, the accuracy of detection data is ensured, and the experiment quality is improved.
Drawings
Fig. 1 is the utility model relates to a fatigue test device of exhaust system rubber lug's structural schematic.
Detailed Description
The structure and the working principle of the fatigue testing device for the rubber lifting lug of the exhaust system provided by the invention are further described in detail with reference to the accompanying drawings.
Refer to fig. 1, for the utility model provides a structural schematic diagram of a fatigue test device of exhaust system rubber lug. The structure of the fatigue test device comprises a closed test box 1, a heating unit 2 for simulating the temperature of a use environment, a supporting unit 3 for simulating the stress state of a rubber lifting lug A and an experimental parameter control unit are arranged in the closed test box, wherein the supporting unit 3 comprises a first movable block 31 and a second movable block 32 which are used for fixing hanging holes of the rubber lifting lug A respectively, the first movable block 31 is connected with a pull rod mechanism and used for enabling the rubber lifting lug A to be stretched under a set load, the second movable block 32 is connected with an excitation mechanism and used for enabling the rubber lifting lug A to be vibrated under a set frequency, and the experimental parameter control unit comprises a pull rod mechanism and a frequency parameter which are transmitted to the excitation mechanism.
The working principle is as follows: placing a rubber lifting lug A to be tested in a test box 1, wherein hanging holes of the rubber lifting lug A are respectively arranged on a first movable block 31 and a second movable block 32 of a supporting unit 3, and the first movable block 31 is connected with a pull rod mechanism, so that the rubber lifting lug A is stressed and stretched to simulate the static load; the second movable block 32 is connected with the vibration excitation mechanism, so that the rubber lifting lug A is subjected to continuous vibration to simulate the dynamic load; meanwhile, the heating unit 2 in the test box 1 works to form a high-temperature environment in the working state of the rubber lifting lug A, and the experiment parameter control unit transmits the tension parameters to the pull rod mechanism and the frequency parameters to the excitation mechanism respectively and is used for recording comprehensive experiment data of the fatigue life of the rubber lifting lug.
In the structure constituting the above fatigue testing apparatus,
in order to enrich experimental samples, the first movable block 31 and the second movable block 32 are parallel laths, the laths are provided with a plurality of jacks 301, the jacks 301 are connected with hanging holes of rubber lifting lugs A through pin shafts 302, so that a plurality of rubber lifting lugs A with the same processing standard can be tested under the same environmental condition at the same time, the interference of individual errors on the whole index is avoided, the performance data can be accurately mastered, the rubber lifting lugs A with different processing standards can be tested under the same environment, different fatigue performance parameters can be quickly obtained through comparison, the directivity reference data can be provided for the technical improvement of the rubber lifting lugs A, and the quality and the efficiency of the experiment are improved;
preferably, the pull rod mechanism comprises a support frame 311 arranged at the upper part of the experiment box 1, a lead screw is fixed in the support frame 311, the tail end of the lead screw is connected with the first movable block 31 through a force measuring sensor 310, the force measuring sensor 310 is electrically connected with the experiment parameter control unit, the pull rod mechanism is simple in structure and convenient to operate, the force measuring sensor 310 obtains and feeds back stretching force data accurately, an automatic experiment environment is realized by matching with the experiment parameter control unit, and original physical property data such as tensile strength, elongation and tearing strength of the rubber lifting lug are obtained;
furthermore, the screw rod is an electric screw rod electrically connected with the experimental parameter control unit, a servo motor of the electric screw rod can also be electrically connected with the experimental parameter control unit, and the displacement of the first movable block 31 is accurately controlled by automatically adjusting the stroke of the screw rod, so that the rubber lifting lug a is in a stretching state with different force, of course, in order to reduce the manufacturing cost, the screw rod can also be a threaded rod 312 matched with a nut 313 fixed in the support frame 311, the upper end of the threaded rod 312 is provided with a spoke handle 314, and the displacement of the first movable block 31 is controlled by adjusting the advance and retreat of the threaded rod 312 in the nut 313 through a hand-operated spoke 314, so that the experimental conditions can be changed for special individuals;
in order to effectively simulate the rubber lifting lug A in a vibration load environment, the vibration excitation mechanism comprises a speed reducing motor 321 arranged in a pedestal at the lower part of the test box 1, the speed reducing motor 321 is connected with an actuator 322 through a transmission shaft, the end part of a piston rod of the actuator 322 is connected with a second movable block 32, the speed reducing motor 321 is electrically connected with an experimental parameter control unit, the actuator 322 generates vibration with set frequency, the second movable block 32 is driven by the actuator to reciprocate, the piston stroke of the actuator 322 is preferably set within a range of +/-30 mm, the fatigue experiment period is 30 ten thousand times, the experimental parameter control unit realizes the change of vibration frequency by controlling a debugger of the speed reducing motor 321 or realizes the free regulation and control within a frequency range of 0-150Hz by connecting a regulating resistor;
preferably, the heating unit 2 comprises electric heating rods 22 respectively arranged at the top and the bottom of the test box 1 and a temperature sensor 21 arranged in the test box 1, the temperature sensor 21 is electrically connected with the experimental parameter control unit, the temperature sensor 21 collects temperature information in real time and feeds the temperature information back to the experimental parameter control unit, and the experimental parameter control unit records temperature data and correspondingly adjusts the temperature data according to different experimental environments to obtain comprehensive data of ageing resistance;
the experiment parameter control unit is a PLC (programmable logic controller) 41 which is electrically connected with the force sensor 310 of the pull rod mechanism, the speed reducing motor 321 of the excitation mechanism and the temperature sensor 21 in the test box 1, the control mode of the whole experiment device is force/displacement PID (proportion integration differentiation) closed-loop control and smooth switching function, the automatic operation can be carried out after the parameter setting is finished, the fatigue life times of the rubber lifting lug can be displayed in real time by recording the operation state of the speed reducing motor, the fixed times can be set, namely, when the experiment is automatically operated to a certain number of times, the experiment is closed, the experimental conclusion can be obtained by observing the appearance of the lifting lug, the experiment can be operated until the fatigue life of the lifting lug is finished, the lifting lug is broken, and at the moment, the PLC controller controls the experiment to be closed through a transmission signal of the rapid change of the tension value on the force transducer, so that the complete running period of the rubber lifting lug A is obtained.
Claims (7)
1. The utility model provides a fatigue test device of exhaust system rubber lug which characterized in that: including the experimental box, its inside heating unit and the support unit and the experiment parameter control unit of simulation rubber lug stress state that set up simulation service environment temperature, wherein, the support unit is including the first movable block and the second movable block that are used for the hanging hole of fixed rubber lug respectively, and wherein, first movable block is connected with link mechanism for make the rubber lug receive the tensile of setting for the load, the second movable block is connected with excitation mechanism, is used for making the rubber lug receive the vibration of setting for the frequency, experiment parameter control unit include to link mechanism conveying pulling force parameter and to excitation mechanism transfer frequency parameter.
2. The fatigue testing device for the rubber lifting lug of the exhaust system according to claim 1, wherein: the first movable block and the second movable block are parallel laths, a plurality of jacks are arranged on the laths, and the jacks are connected with hanging holes of the rubber lifting lugs through pin shafts.
3. The fatigue testing device for the rubber lifting lug of the exhaust system according to claim 1, wherein: the pull rod mechanism comprises a support frame arranged on the upper portion of the experiment box, a lead screw is fixed in the support frame, the tail end of the lead screw is connected with the first movable block through a force measuring sensor, and the force measuring sensor is electrically connected with the experiment parameter control unit.
4. The fatigue testing device for the rubber lifting lug of the exhaust system according to claim 3, wherein: the lead screw is an electric lead screw electrically connected with the experiment parameter control unit, or the lead screw is a threaded rod matched with a nut fixed in the support frame, and a spoke handle is arranged at the upper end of the threaded rod.
5. The fatigue testing device for the rubber lifting lug of the exhaust system according to claim 1, wherein: the excitation mechanism is including setting up the gear motor in experimental box lower part pedestal, gear motor passes through the transmission shaft and is connected with the actuator, the piston rod tip of actuator with the second movable block is connected, gear motor with experiment parameter control unit electrical connection.
6. The fatigue testing device for the rubber lifting lug of the exhaust system according to claim 1, wherein: the heating unit comprises electric heating rods respectively arranged at the top and the bottom of the experimental box and a temperature sensor arranged in the experimental box, and the temperature sensor is electrically connected with the experimental parameter control unit.
7. The fatigue testing device for the rubber lifting lug of the exhaust system according to claim 1, wherein: the experiment parameter control unit is a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922112073.0U CN210571360U (en) | 2019-12-01 | 2019-12-01 | Fatigue test device for rubber lifting lugs of exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922112073.0U CN210571360U (en) | 2019-12-01 | 2019-12-01 | Fatigue test device for rubber lifting lugs of exhaust system |
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| CN210571360U true CN210571360U (en) | 2020-05-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820115A (en) * | 2021-09-24 | 2021-12-21 | 无锡威孚力达催化净化器有限责任公司 | Double-shaft lifting lug fatigue performance testing device |
| CN114062156A (en) * | 2021-11-15 | 2022-02-18 | 无锡威孚力达催化净化器有限责任公司 | Special device for verifying high-temperature fatigue performance of automobile rubber lifting lug |
-
2019
- 2019-12-01 CN CN201922112073.0U patent/CN210571360U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820115A (en) * | 2021-09-24 | 2021-12-21 | 无锡威孚力达催化净化器有限责任公司 | Double-shaft lifting lug fatigue performance testing device |
| CN114062156A (en) * | 2021-11-15 | 2022-02-18 | 无锡威孚力达催化净化器有限责任公司 | Special device for verifying high-temperature fatigue performance of automobile rubber lifting lug |
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