CN112253576A - Universal reliability test device for hydraulic cylinder - Google Patents
Universal reliability test device for hydraulic cylinder Download PDFInfo
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- CN112253576A CN112253576A CN202011123948.8A CN202011123948A CN112253576A CN 112253576 A CN112253576 A CN 112253576A CN 202011123948 A CN202011123948 A CN 202011123948A CN 112253576 A CN112253576 A CN 112253576A
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- test
- swing rod
- hydraulic cylinder
- fixing
- pin shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical field of hydraulic cylinder auxiliary test devices, and particularly relates to a universal reliability test device for a hydraulic cylinder, which comprises a test fixing table and a swing rod, wherein the swing rod is arranged on the test fixing table through a rotary pin shaft, and the rotary pin shaft is connected to the symmetrical center of the swing rod; two hinge holes are formed in the swing rod, and the two hinge holes in the swing rod are symmetrically arranged around the rotary pin shaft; the test fixing platform is kept away from one end of the rotary pin shaft is symmetrically provided with a fixing seat, the fixing seat is provided with a hinged mounting hole, and a tested hydraulic cylinder is hinged between the swing rod and the fixing seat which are positioned on the same side of the test fixing platform. Two tested hydraulic cylinders are connected through the swing rod, the test process belongs to variable-angle action, actual working conditions of most hydraulic cylinders for engineering are met, and test data are more accurate.
Description
Technical Field
The invention belongs to the technical field of hydraulic cylinder auxiliary test devices, and particularly relates to a universal reliability test device for a hydraulic cylinder.
Background
The pneumatic cylinder is higher as the executive component security and the reliability requirement of mechanical structure, and the pneumatic cylinder reliability: the hydraulic cylinder product has the capability of keeping the specified functions of the hydraulic cylinder product in the specified time under the specified conditions, and the main index of the hydraulic cylinder product is 'average first failure-free working time', which is called MTTF for short; therefore, the newly developed hydraulic cylinder is required to be tested in the aspects of safety and reliability before being delivered to a user. According to the requirements of GB/T35023-. At present, the related standard of a hydraulic cylinder reliability test device is not available in China. The existing test device has a complex bench structure and high cost; in addition, in the test process of the test device, the tested hydraulic cylinder moves horizontally, and accessories such as the cylinder bottom, the bushing of the earring and the like do not move relatively, so that the test effect cannot be achieved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the universal reliability test device for the hydraulic cylinders, two tested hydraulic cylinders are connected through the swing rod, the test process belongs to variable-angle action, the actual working conditions of most hydraulic cylinders for engineering are met, and the test data are more accurate.
The invention is realized by the following technical scheme: a universal reliability test device for hydraulic cylinders comprises a test fixing platform and a swing rod, wherein the swing rod is arranged on the test fixing platform through a rotary pin shaft, and the rotary pin shaft is connected to the symmetrical center of the swing rod; two hinge holes are formed in the swing rod, and the two hinge holes in the swing rod are symmetrically arranged around the rotary pin shaft; the test fixing platform is kept away from one end of the rotary pin shaft is symmetrically provided with a fixing seat, the fixing seat is provided with a hinged mounting hole, and a tested hydraulic cylinder is hinged between the swing rod and the fixing seat which are positioned on the same side of the test fixing platform.
Furthermore, the fixing seat is of a flat plate structure and is welded on the test fixing table.
Furthermore, the fixing base be T type structure, be equipped with the articulated mounting hole that is used for installing by the hydraulic cylinder of being tested on the diaphragm of fixing base, be equipped with on the vertical plate of fixing base and be used for with the bolt mounting hole of test fixed station bolt fastening.
The cylinder bottom of the tested hydraulic cylinder is connected with the fixing seat, the piston rod of the tested hydraulic cylinder is connected with the oscillating bar, and the test process of the test device comprises the following steps: the two tested hydraulic cylinders are a loading cylinder and a tested hydraulic cylinder. When the left tested hydraulic cylinder extends out, the left tested hydraulic cylinder is pressurized in a rodless cavity, the swing rod rotates clockwise around the rotating pin shaft to press the right tested hydraulic cylinder back, and the purpose of applying pushing load to the left tested hydraulic cylinder is achieved by controlling the pressure relief pressure of the rodless cavity of the right tested hydraulic cylinder, and vice versa.
When the left side is tried the pneumatic cylinder and is retracted, the left side is tried the pneumatic cylinder and has the pole chamber pressurization, and the pendulum rod is rotated around the gyration pin axle anticlockwise, is pulled out the right side by the pneumatic cylinder that is tried, has pole chamber pressure release pressure through control right side by the pneumatic cylinder that is tried, reaches to exert the purpose of drawing the load for the left side by the pneumatic cylinder that is tried, vice versa.
The invention has the beneficial effects that: 1. the two tested hydraulic cylinders are connected through the swing rod, the test process belongs to variable-angle action, namely variable-amplitude action, the change of the motion angle is large, the actual working condition of most hydraulic cylinders for engineering is met, and the test data are more accurate; 2. when the test device is used for testing, the test device not only can test the sealing system and the integral structural strength of the tested hydraulic cylinder, but also can perform abrasion test on the bearings in the hinge holes at the two ends of the tested hydraulic cylinder by variable-angle operation, so that the service life data of the bearings under the test working condition can be obtained; 3. the distances between the left hinge hole and the right hinge hole on the swing rod and the rotary pin shaft are equal, so that the two tested hydraulic cylinders are guaranteed to be stressed equally during testing, and the test data are more accurate; 4. the application of the test load is mainly realized by controlling the pressure relief pressure of two cavities of one tested hydraulic cylinder, so that a hydraulic system is simplified, the cost is lower, and the reliability is higher; 5. compared with the traditional horizontal placement and linear motion test bed, the test device has the advantages of simple structure, low manufacturing cost, small overall size of the test fixing bed and installation space saving.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure, the test device comprises a tested hydraulic cylinder 1, a tested hydraulic cylinder 2, a test fixing table 3, a swing rod 4, a rotary pin shaft 5 and a fixing seat.
Detailed Description
The invention is further illustrated below with reference to the figures and examples.
As shown in figure 1, the universal reliability test device for the hydraulic cylinder comprises a test fixing platform 2 and a swing rod 3, wherein the swing rod 3 is arranged on the test fixing platform 2 through a rotary pin shaft 4, the rotary pin shaft 4 is connected to the symmetrical center of the swing rod 3, and the swing rod 3 can rotate around the rotary pin shaft 4. Two hinge holes are formed in the swing rod 3, the two hinge holes in the swing rod 3 are symmetrically arranged around the rotary pin shaft 4, and the two tested hydraulic cylinders 1 are guaranteed to be stressed equally during testing. The test fixing table 2 is far away from one end of the rotary pin shaft 4 is symmetrically provided with a fixing seat 5, the fixing seat 5 can be of a flat plate structure, and the fixing seat 5 is welded on the test fixing table 2. Preferably, the fixing base 5 is a T-shaped structure, a horizontal plate of the fixing base 5 is provided with a hinge mounting hole for mounting the tested hydraulic cylinder 1, and a vertical plate of the fixing base 5 is provided with a bolt mounting hole for fixing the testing fixing table 2 with a bolt. A tested hydraulic cylinder 1 is hinged between the swing rod 3 and the fixed seat 5 which are positioned on the same side of the test fixed platform 2. The cylinder bottom of the tested hydraulic cylinder 1 is connected with the fixed seat 5, and the piston rod of the tested hydraulic cylinder 1 is connected with the swing rod 3.
During the test, the left and right tested hydraulic cylinders 1 are a loading cylinder and a tested hydraulic cylinder. When the left tested hydraulic cylinder 1 extends out, the left tested hydraulic cylinder 1 is pressurized in a rodless cavity, the swing rod 3 rotates clockwise around the rotary pin shaft 4 to press the right tested hydraulic cylinder 1 back, and the purpose of applying a pushing load to the left tested hydraulic cylinder 1 is achieved by controlling the pressure relief pressure of the rodless cavity of the right tested hydraulic cylinder 1, and vice versa.
When the left side is tried hydraulic cylinder 1 and is retracted, the left side is tried hydraulic cylinder 1 and has the pole chamber pressurization, and pendulum rod 3 has anticlockwise rotation around gyration round pin axle 4, is pulled out the right side by being tried hydraulic cylinder 1, has pole chamber pressure release pressure through controlling the right side by being tried hydraulic cylinder 1, reaches to exert the purpose of pulling the load for left side by being tried hydraulic cylinder 1, vice versa.
In the test device, two tested hydraulic cylinders are connected through the swing rod, the test process belongs to variable-angle action, and the movement angle is changed greatly, so that the test device conforms to the actual working condition of most hydraulic cylinders for engineering, and the test data is more accurate; when the test device is used for testing, the test device not only can test the sealing system and the integral structural strength of the tested hydraulic cylinder, but also can perform abrasion test on the bearings in the hinge holes at the two ends of the tested hydraulic cylinder by variable-angle operation, so that the service life data of the bearings under the test working condition can be obtained; the distances between the left hinge hole and the right hinge hole on the swing rod and the rotary pin shaft are equal, so that the two tested hydraulic cylinders are guaranteed to be stressed equally during testing, and the test data are more accurate; the application of the test load is mainly realized by controlling the pressure relief of two cavities of one tested hydraulic cylinder, the hydraulic system is simplified, the cost is lower, and the reliability is higher.
Claims (3)
1. The utility model provides a general reliability test device of pneumatic cylinder which characterized in that: the device comprises a test fixing platform (2) and a swing rod (3), wherein the swing rod (3) is arranged on the test fixing platform (2) through a rotary pin shaft (4), and the rotary pin shaft (4) is connected to the symmetrical center of the swing rod (3); two hinge holes are formed in the swing rod (3), and the two hinge holes in the swing rod (3) are symmetrically arranged around the rotary pin shaft (4); the test fixing platform (2) is far away from one end of the rotary pin shaft (4) is symmetrically provided with a fixing seat (5), the fixing seat (5) is provided with a hinged mounting hole, and a tested hydraulic cylinder (1) is hinged between the swing rod (3) and the fixing seat (5) which are positioned on the same side of the test fixing platform (2).
2. The universal reliability test device for hydraulic cylinders according to claim 1, characterized in that: the fixing seat (5) is of a flat plate structure, and the fixing seat (5) is welded on the test fixing platform (2).
3. The universal reliability test device for hydraulic cylinders according to claim 1, characterized in that: fixing base (5) be T type structure, be equipped with the articulated mounting hole that is used for installing by hydraulic cylinder (1) of being tested on the diaphragm of fixing base (5), be equipped with the bolt mounting hole that is used for with experimental fixed station (2) bolt fastening on the vertical plate of fixing base (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011123948.8A CN112253576A (en) | 2020-10-20 | 2020-10-20 | Universal reliability test device for hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011123948.8A CN112253576A (en) | 2020-10-20 | 2020-10-20 | Universal reliability test device for hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112253576A true CN112253576A (en) | 2021-01-22 |
Family
ID=74244349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011123948.8A Pending CN112253576A (en) | 2020-10-20 | 2020-10-20 | Universal reliability test device for hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112253576A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1541428A2 (en) * | 1988-05-31 | 1990-02-07 | Запорожское Научно-Производственное Объединение По Созданию И Производству Машин Для Подготовки Органических Удобрений | Rig for service-life testing of hydraulic cylinders |
| CN101881289A (en) * | 2010-07-07 | 2010-11-10 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hydraulic cylinder reliability test method and device based on power recovery technology |
| CN101881288A (en) * | 2010-06-29 | 2010-11-10 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hydraulic cylinder durability test method and device |
| CN202092856U (en) * | 2011-04-18 | 2011-12-28 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Bench tester for autocrane frame |
| CN208123167U (en) * | 2018-03-07 | 2018-11-20 | 中南大学 | A kind of hydraulic cylinder performance test device of rocker-arm hydraulic loaded |
| CN109931315A (en) * | 2019-04-13 | 2019-06-25 | 韶关市瑞和液压机械制造有限公司 | A kind of dynamic checkout unit and its application method of oil cylinder |
-
2020
- 2020-10-20 CN CN202011123948.8A patent/CN112253576A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1541428A2 (en) * | 1988-05-31 | 1990-02-07 | Запорожское Научно-Производственное Объединение По Созданию И Производству Машин Для Подготовки Органических Удобрений | Rig for service-life testing of hydraulic cylinders |
| CN101881288A (en) * | 2010-06-29 | 2010-11-10 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hydraulic cylinder durability test method and device |
| CN101881289A (en) * | 2010-07-07 | 2010-11-10 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hydraulic cylinder reliability test method and device based on power recovery technology |
| CN202092856U (en) * | 2011-04-18 | 2011-12-28 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Bench tester for autocrane frame |
| CN208123167U (en) * | 2018-03-07 | 2018-11-20 | 中南大学 | A kind of hydraulic cylinder performance test device of rocker-arm hydraulic loaded |
| CN109931315A (en) * | 2019-04-13 | 2019-06-25 | 韶关市瑞和液压机械制造有限公司 | A kind of dynamic checkout unit and its application method of oil cylinder |
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Application publication date: 20210122 |