CN111929051B - Guide wheel endurance test system - Google Patents
Guide wheel endurance test system Download PDFInfo
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- CN111929051B CN111929051B CN202010851103.4A CN202010851103A CN111929051B CN 111929051 B CN111929051 B CN 111929051B CN 202010851103 A CN202010851103 A CN 202010851103A CN 111929051 B CN111929051 B CN 111929051B
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- wheel
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- guide wheel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The application relates to a guide wheel endurance test system, including: a test bed; the guide wheel assembly is arranged on the test bed and comprises a guide wheel; the driving wheel assembly is arranged on the test bench and comprises a driving wheel, and the driving wheel is used for driving the guide wheel; the driving assembly is in transmission connection with the driving wheel and is used for driving the driving wheel; the driven wheel assembly is arranged on the test bench and comprises a driven wheel and a push-pull piece; the axial direction of the guide wheel is parallel to the axial direction of the driving wheel and the axial direction of the driven wheel. Therefore, researchers can truly simulate the working condition of the guide wheel of the excavator, the fault process of the guide wheel is controlled globally, and the comprehensive performance of the guide wheel is accurately evaluated.
Description
Technical Field
The application relates to the field of engineering machinery testing, in particular to a guide wheel endurance test system.
Background
The guide wheel is an important part of the excavator, and the detection on the quality of the guide wheel only stays on the static parameters such as mechanical property, sealing property and the like at present. The guide wheel durability test system is specially designed for more reasonably and accurately evaluating the comprehensive performance of the guide wheel and conveniently researching the fault occurrence reason of the guide wheel.
Disclosure of Invention
The application aims at providing a guide wheel endurance test system, which is convenient for researchers to truly simulate the working condition of a guide wheel of an excavator, carries out global control on the fault process of the guide wheel and accurately evaluates the comprehensive performance of the guide wheel.
In order to achieve the above object, an embodiment of the present application provides a guide wheel endurance testing system, including: a test bed; the guide wheel assembly is arranged on the test bed and comprises a guide wheel; the driving wheel assembly is arranged on the test bench and comprises a driving wheel, and the driving wheel is used for driving the guide wheel; the driving assembly is in transmission connection with the driving wheel and is used for driving the driving wheel; the driven wheel assembly is arranged on the test bench and comprises a driven wheel and a push-pull piece; the axial direction of the guide wheel is parallel to the axial direction of the driving wheel and the axial direction of the driven wheel.
In one embodiment, the driven wheel assembly further comprises: the sliding device is arranged on the test bench; the rotating device is arranged on the sliding device and is used for operating on the sliding device; the driven wheel support is arranged on the rotating device and used for fixing the driven wheel on the rotating device; wherein, the sliding device moves horizontally in a horizontal plane parallel to the upper surface of the test bed; the rotating device rotates around a shaft in the axial direction perpendicular to the upper surface of the test bench.
In one embodiment, one end of the push-pull member is hinged to one end of the driven wheel support.
In one embodiment, the push-pull member comprises: a hydraulic lever or a spring.
In one embodiment, the guide wheel is sandwiched between the driving wheel and the driven wheel.
In one embodiment, the outer profile of the guide wheel is convex; the outer profile of the driving wheel is concave; the outer profile of the driven wheel is concave; the concave profile of the driving wheel and the concave profile of the driven wheel are matched with the convex profile of the guide wheel, and the guide wheel is limited between the driving wheel and the driven wheel.
In one embodiment, the centers of the driving wheel, the guiding wheel and the driven wheel are on the same straight line.
In one embodiment, the guide wheel assembly further comprises: and the guide wheel bracket is arranged on the test bed and is connected with the axle center of the guide wheel.
In one embodiment, the driving wheel assembly further includes: and the driving wheel bracket is arranged on the test bench and is connected with the axis of the driving wheel.
In one embodiment, the driving assembly includes: the driving shaft of the motor is in transmission connection with the driving wheel, and the motor is used for driving the driving wheel to rotate.
Through the technical scheme, the method has the following advantages:
1) the force application angle is variable, and the load size and the unbalance loading condition of the guide wheel when the excavator walks under turning and various slope working conditions can be simulated;
2) the gear train is more reasonable in arrangement, the driving wheel provides power to enable the guide wheel to rotate, the driven wheel provides load to simulate the stress condition of the guide wheel, and the test accuracy is improved;
3) the application discloses action wheel top (and guide wheel cooperation part) is according to caterpillar link structural design, and simulation guide wheel and caterpillar link cooperation are close actual conditions more.
Additional features and advantages of the present application will be described in detail in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a guide wheel endurance testing system according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of another guide wheel endurance testing system provided in an embodiment of the present application;
fig. 3A is a top view of a guide wheel endurance testing system according to an embodiment of the present disclosure;
fig. 3B is a top view of a guide wheel endurance testing system according to an embodiment of the present disclosure.
Icon: 1-a guide wheel endurance test system; 10-test stand; 20-a guide wheel assembly; 30-a driving wheel assembly; 40-a driven wheel assembly; 21-a guide wheel; 31-a driving wheel; 41-driven wheel; 42-a push-pull member; 43-a glide means; 44-a turning gear; 45-driven wheel support; 22-a guide wheel support; 32-driving wheel support; 46-rotational hinge point.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, which is a schematic structural diagram of a guide wheel endurance testing system 1 according to an embodiment of the present application, the guide wheel endurance testing system 1 includes: test stand 10, guide wheel assembly 20, driver wheel assembly 30, driven wheel assembly 40 and drive assembly.
Wherein, the guide wheel assembly 20 is arranged on the test bench 10, the driving wheel assembly 30 is arranged on the test bench 10, the driven wheel assembly 40 is arranged on the test bench 10, and the guide wheel assembly 20 is clamped between the driving wheel assembly 30 and the driven wheel assembly 40.
In an embodiment, the guide wheel assembly 20 includes the guide wheel 21, the driving wheel assembly 30 includes the driving wheel 31, the driven wheel assembly 40 includes the driven wheel 41 and a push-pull member, the push-pull member 42 is used for changing the running plane of the driven wheel 41, the guide wheel 21 is interposed between the driving wheel 31 and the driven wheel 41, when the push-pull member 42 is pushed and pulled, the running plane of the driven wheel 41 and the running plane of the guide wheel 21 are no longer parallel or overlapped, and the stress condition of the guide wheel 21 is simulated.
In one embodiment, the driving element is in transmission connection with the driving wheel 31, the driving element is used for driving the driving wheel 31, and the driving wheel 31 is used for driving the guiding wheel 21. The axial direction of the guide pulley 21 is parallel to both the axial direction of the driving pulley 31 and the axial direction of the driven pulley 41.
In one embodiment, the centers of the driving wheel 31, the guiding wheel 21 and the driven wheel 41 are on the same straight line.
In an embodiment, the driving component may be a motor, a driving shaft of the motor is in transmission connection with the driving wheel 31, and the motor is used for driving the driving wheel 31 to rotate.
In the implementation process, the guide wheel 21 is arranged between the driving wheel 31 and the driven wheel 41, the centers of the driving wheel 31 and the driven wheel are in a straight line, and the driving wheel 31 provides power for the guide wheel 21 to enable the guide wheel 21 to rotate. Driven wheel 41 provides a simulated operating load for guide wheel 21. When the motor drives the driving wheel 31 to rotate, the driving wheel 31 drives the guiding wheel 21 to rotate, the motion state of the driving wheel when the driving wheel is walking is simulated, and the driven wheel 41 rotates along with the guiding wheel 21.
Referring to fig. 2, which is a schematic structural diagram of another guide wheel endurance testing system 1 according to an embodiment of the present application, the driven wheel assembly 40 further includes: a glide 43, a swivel 44 and a driven wheel support 45.
The sliding device 43 is arranged on the test bench 10, the rotating device 44 is arranged on the sliding device 43, the rotating device 44 is used for operating on the sliding device 43, the driven wheel support 45 is arranged on the rotating device 44, and the driven wheel support 45 is used for fixing the driven wheel 41 on the rotating device 44. In one embodiment, the sliding device 43 moves horizontally in a horizontal plane parallel to the upper surface of the test stand 10, and the rotating device 44 rotates around an axis in a direction perpendicular to the upper surface of the test stand 10.
In one embodiment, one end of the push-pull member is hinged to one end of the driven wheel support 45. Wherein the push-pull member 42 may be a hydraulic rod or a spring. The hydraulic rod may be a piston rod of a hydraulic ram.
In one embodiment, the guide wheel assembly 20 further includes a guide wheel support 22, the driving wheel assembly 30 further includes a driving wheel support 32, and the guide wheel support 22 is disposed on the test stand 10 and connected to the axis of the guide wheel 21. The driving wheel holder 32 is provided on the test stand 10 and connected to the axis of the driving wheel 31.
In the implementation process, the driven wheel 41 is mounted on a driven wheel support 45, the bottom of the driven wheel support 45 is mounted on a rotating device 44, and the rotating device 44 is mounted on a sliding device, and the moving direction of the rotating device is perpendicular to the axis of the guide wheel 21. The driven wheel 41 can simultaneously realize the rotation and the sliding motion, and different contact states with the end surface of the guide wheel 21 are realized.
The driven wheel support 45 is provided with a rotary hinge point 46 for connecting a piston rod of a hydraulic oil cylinder. Wherein, the oil cylinder can horizontally rotate left and right around the hinged point of the support, thereby transmitting the deflection loads in different directions to the driven wheel support 45. When the oil cylinder provides load, the generated force is transmitted to the driven wheel support 45, the driven wheel support 45 can realize corresponding actions such as rotation, sliding and the like through the rotating device 44 and the sliding rail device, and then the driven wheel 41 transmits load loads in different directions and different sizes to the guide wheel 21, so that the stress condition of the guide wheel 21 is further simulated. In one embodiment, if the stress condition of the guide wheel 21 is to be changed, the cylinder can rotate around the shaft within a certain angle, and the magnitude of the force of the cylinder is changed, so that the condition that the end face of the guide wheel 21 is subjected to unbalance loading when the excavator walks on a slope is simulated.
Referring to fig. 3A, which is a top view of a guide wheel durability test system 1 according to an embodiment of the present disclosure, as shown in the figure, an outer profile of a guide wheel 21 is convex, an outer profile of a driving wheel 31 is concave, and an outer profile of a driven wheel 41 is concave.
As shown in fig. 3B, the concave profile of the driving wheel 31 and the concave profile of the driven wheel 41 are matched with the convex profile of the guide wheel 21, so as to limit the guide wheel 21 between the driving wheel 31 and the driven wheel 41. The wheel train system that 1 action wheel 31 and 1 follow driving wheel 41 constitute, action wheel 31 provides power, makes leading wheel 21 rotate, follows driving wheel 41 and provides the load, simulates the atress condition of leading wheel 21.
In the implementation process, the caterpillar track section and the guide wheel 21 are directly adopted to be matched with a too complex mechanism, and the driving wheel 31 and the driven wheel 41 (the top profile and the caterpillar track section are the same in structure) are designed to drive the guide wheel 21 to rotate so as to simulate the actual working condition. The special wheel system makes the local stress of the guide wheel 21 closer to the real condition.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A guide wheel endurance testing system, comprising:
a test bed;
the guide wheel assembly is arranged on the test bench and comprises a guide wheel;
the driving wheel assembly is arranged on the test bench and comprises a driving wheel, and the driving wheel is used for driving the guide wheel;
the driving assembly is in transmission connection with the driving wheel and is used for driving the driving wheel;
the driven wheel assembly is arranged on the test bench and comprises a driven wheel and a push-pull piece, and the guide wheel is clamped between the driving wheel and the driven wheel; the axial direction of the guide wheel, the axial direction of the driving wheel and the axial direction of the driven wheel are all parallel in an initial state, and the push-pull piece is used for changing the running plane of the driven wheel, so that the running plane of the driven wheel and the running plane of the guide wheel are not parallel or coincident.
2. The system of claim 1, wherein the driven wheel assembly further comprises:
the sliding device is arranged on the test bed;
the rotating device is arranged on the sliding device and is used for operating on the sliding device;
the driven wheel support is arranged on the rotating device and used for fixing the driven wheel on the rotating device; wherein the content of the first and second substances,
the sliding device moves horizontally in a horizontal plane parallel to the upper surface of the test bed;
the rotating device rotates around an axis in an axial direction perpendicular to the upper surface of the test bed.
3. The system of claim 2, wherein one end of the push-pull member is hingedly connected to one end of the driven wheel support.
4. The system of claim 1, wherein the push-pull member comprises: a hydraulic lever or a spring.
5. The system of claim 1, wherein the outboard profile of the guide wheel is convex;
the outer profile of the driving wheel is concave;
the outer profile of the driven wheel is concave; wherein the content of the first and second substances,
the concave profile of the driving wheel and the concave profile of the driven wheel are matched with the convex profile of the guide wheel, so that the guide wheel is limited between the driving wheel and the driven wheel.
6. The system of claim 1, wherein centers of the driving wheel, the guiding wheel, and the driven wheel are on a same straight line in an initial state.
7. The system of claim 1, wherein the guide wheel assembly further comprises:
and the guide wheel bracket is arranged on the test bed and is connected with the axle center of the guide wheel.
8. The system of claim 1, wherein the drive wheel assembly further comprises:
and the driving wheel support is arranged on the test bench and is connected with the axis of the driving wheel.
9. The system of claim 1, wherein the drive assembly comprises:
the driving shaft of the motor is in transmission connection with the driving wheel, and the motor is used for driving the driving wheel to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010851103.4A CN111929051B (en) | 2020-08-21 | 2020-08-21 | Guide wheel endurance test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010851103.4A CN111929051B (en) | 2020-08-21 | 2020-08-21 | Guide wheel endurance test system |
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| Publication Number | Publication Date |
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| CN111929051A CN111929051A (en) | 2020-11-13 |
| CN111929051B true CN111929051B (en) | 2022-05-03 |
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| CN202010851103.4A Active CN111929051B (en) | 2020-08-21 | 2020-08-21 | Guide wheel endurance test system |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202599678U (en) * | 2012-05-25 | 2012-12-12 | 泉州市泉永机械发展有限公司 | Experimental equipment for running-in of front idler |
| CN203064065U (en) * | 2012-12-24 | 2013-07-17 | 三一重机有限公司 | Guide pulley fixing device and crawler-type engineering machine |
| CN203719919U (en) * | 2013-12-30 | 2014-07-16 | 无锡翔能机械制造有限公司 | Running-in testing device used for guiding wheel |
| CN203772555U (en) * | 2013-12-26 | 2014-08-13 | 北京市三一重机有限公司 | Test system of crawler belt tensioning device and crawler belt walking mechanism |
| CN207730447U (en) * | 2017-12-30 | 2018-08-14 | 济宁市金牛机械有限公司 | A kind of guide wheel running-in test device |
| CN109000907A (en) * | 2018-06-08 | 2018-12-14 | 江苏长龄液压股份有限公司 | The fatigue test method of guide wheel strainer |
| CN208383440U (en) * | 2018-05-23 | 2019-01-15 | 山推工程机械股份有限公司 | A kind of thrust wheel adjustment simulation test stand |
| CN109520752A (en) * | 2018-12-28 | 2019-03-26 | 徐工集团工程机械有限公司 | Test the reliability test system of wheel |
| CN109556889A (en) * | 2018-11-30 | 2019-04-02 | 湖北环电磁装备工程技术有限公司 | A kind of vertical bearing wheels testing stand |
| CN110146304A (en) * | 2019-06-28 | 2019-08-20 | 三一重机有限公司 | Thrust wheel endurance testing system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4070303B2 (en) * | 1998-06-09 | 2008-04-02 | 川崎重工業株式会社 | Guide wheel puncture detection device |
| CN101398346A (en) * | 2008-09-28 | 2009-04-01 | 重庆大学 | Straddle single rail bogie synthesis test stand |
| CN102607842B (en) * | 2011-12-21 | 2014-07-09 | 吉林大学 | Multi-operating condition extreme load testing system and method for wheel loader transmission system |
| CN102700639A (en) * | 2012-06-15 | 2012-10-03 | 江苏柳工机械有限公司 | Crawler-type travel system for skid-steer loader |
| CN202974653U (en) * | 2012-11-05 | 2013-06-05 | 湖北工业大学 | Belt wheel durability test system |
| JP6591762B2 (en) * | 2015-02-27 | 2019-10-16 | 三菱重工業株式会社 | Wear inspection apparatus, wear inspection method and program |
| CN108824890A (en) * | 2018-06-11 | 2018-11-16 | 陕西隆翔特来电充电科技有限公司 | A kind of lifting system |
-
2020
- 2020-08-21 CN CN202010851103.4A patent/CN111929051B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202599678U (en) * | 2012-05-25 | 2012-12-12 | 泉州市泉永机械发展有限公司 | Experimental equipment for running-in of front idler |
| CN203064065U (en) * | 2012-12-24 | 2013-07-17 | 三一重机有限公司 | Guide pulley fixing device and crawler-type engineering machine |
| CN203772555U (en) * | 2013-12-26 | 2014-08-13 | 北京市三一重机有限公司 | Test system of crawler belt tensioning device and crawler belt walking mechanism |
| CN203719919U (en) * | 2013-12-30 | 2014-07-16 | 无锡翔能机械制造有限公司 | Running-in testing device used for guiding wheel |
| CN207730447U (en) * | 2017-12-30 | 2018-08-14 | 济宁市金牛机械有限公司 | A kind of guide wheel running-in test device |
| CN208383440U (en) * | 2018-05-23 | 2019-01-15 | 山推工程机械股份有限公司 | A kind of thrust wheel adjustment simulation test stand |
| CN109000907A (en) * | 2018-06-08 | 2018-12-14 | 江苏长龄液压股份有限公司 | The fatigue test method of guide wheel strainer |
| CN109556889A (en) * | 2018-11-30 | 2019-04-02 | 湖北环电磁装备工程技术有限公司 | A kind of vertical bearing wheels testing stand |
| CN109520752A (en) * | 2018-12-28 | 2019-03-26 | 徐工集团工程机械有限公司 | Test the reliability test system of wheel |
| CN110146304A (en) * | 2019-06-28 | 2019-08-20 | 三一重机有限公司 | Thrust wheel endurance testing system |
Non-Patent Citations (1)
| Title |
|---|
| 履带拖拉机导向轮拐轴结构完整性分析;欧阳林辉 等;《机械设计与制造》;20141130(第11(2014)期);第33-35页 * |
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