CN111220488B - Double-loading type wear test device for reciprocating dynamic sealing of actuating cylinder - Google Patents
Double-loading type wear test device for reciprocating dynamic sealing of actuating cylinder Download PDFInfo
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- CN111220488B CN111220488B CN201911227542.1A CN201911227542A CN111220488B CN 111220488 B CN111220488 B CN 111220488B CN 201911227542 A CN201911227542 A CN 201911227542A CN 111220488 B CN111220488 B CN 111220488B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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Abstract
The invention provides a double-loading type abrasion test device for reciprocating dynamic sealing of an actuating cylinder, which comprises a fixing device, a connecting and supporting device, a loading test device and a detection device, wherein the fixing device comprises a test bed bottom plate, a first fixing tool, a second fixing tool and a third fixing tool, the connecting and supporting device comprises a rolling bearing, a connecting tool and a guide rail, the loading servo cylinder is installed between the first fixing tool and the connecting tool, the guide rail is symmetrically installed between the second fixing tool and the third fixing tool, the connecting tool is installed on the guide rail through a rolling bearing, the loading test device comprises the loading servo cylinder, a hydraulic cylinder tool, an oil pipe, a valve block, a first lug ring and a second fixing pin, the detection device comprises a force sensor, a temperature sensor and a pressure sensor, the hydraulic cylinder tool passes through the force sensor, and the first lug ring and the second fixing pin are installed between the third fixing tool and the connecting tool. The invention has high test efficiency and wide test range and conforms to the actual working condition.
Description
Technical Field
The invention belongs to the field of mechanical equipment service life tests, and particularly relates to a double-loading type wear test device for reciprocating dynamic sealing of an actuating cylinder.
Background
Wear is one of the most important wear-type failure mechanisms of the sports machinery products. The dynamic sealing ring is used as a sealing element and is mainly used for sealing the abutting surface of the cylinder body and the piston rod in the actuating cylinder and the piston between two cavities of the actuating cylinder so as to reduce the abrasion caused by the reciprocating motion of the actuating cylinder and prolong the service life of a product.
In the traditional test method of the dynamic sealing element in the reciprocating motion of the actuating cylinder, a dynamic sealing tester is used, tools with different sizes are designed so as to test dynamic sealing elements with different types and sizes, and the test method has the defects that the actual use conditions of the dynamic sealing element are far different due to the load, the oil pressure and the oil temperature which are born by the dynamic sealing during the test, and the test efficiency is not high because the space of the tester is limited.
Disclosure of Invention
In view of the above situation, the invention provides a double-loading type wear test device for reciprocating sealing of an actuating cylinder, which has the characteristics of ingenious structure, lower cost, wide application range, simplicity in operation and convenience in use.
The technical scheme adopted by the invention is that the double-loading type abrasion test device for the reciprocating dynamic seal of the actuating cylinder comprises a fixing device, a connecting and supporting device, a loading test device and a detection device, wherein the fixing device comprises a test bed bottom plate, a first fixing tool, a second fixing tool and a third fixing tool, the first fixing tool, the second fixing tool and the third fixing tool are installed on the test bed bottom plate through fixing nuts, the distance between the first fixing tool and the third fixing tool can be adjusted according to the test requirement, and the second fixing tool is installed between the first fixing tool and the third fixing tool.
The connection supporting device comprises a rolling bearing, a connection tool, a guide rail, a second lug ring and a first fixing pin, the tail end of a cylinder body of the loading servo cylinder is installed on the first fixing tool, the guide rail is provided with two guide rails, the two guide rails are symmetrically installed between the second fixing tool and the third fixing tool, the connection tool passes through the rolling bearing and is installed on the two guide rails, the tail end of a piston rod of the loading servo cylinder is installed on the second lug ring, and the second lug ring is fixedly connected onto the connection tool through the first fixing pin.
The loading test device comprises a loading servo cylinder, a hydraulic cylinder tool, an oil pipe, a valve block, a first lug ring and a second fixing pin, the detection device comprises a force sensor, a temperature sensor and a pressure sensor, the first end of the hydraulic cylinder tool is arranged on the third fixing tool, the second end of the hydraulic cylinder tool is connected with the force sensor, the force sensor is connected with the first earring, the first lug ring is fixedly connected on the connecting tool through the second fixing pin, the first end of the valve block is arranged on the hydraulic cylinder tool through threads, the first end of the oil pipe is connected to the valve block, the second end is connected to the pump station, a pressure sensor is arranged on the valve block, the temperature sensor is installed on the valve block through threaded connection, and the loading test device and the detection device are provided with two sets and are symmetrically installed between the second fixing tool and the third fixing tool respectively. The hydraulic cylinder tool mainly comprises a hydraulic cylinder body, a hydraulic cylinder piston rod and a guide sleeve, wherein a hydraulic pipeline is integrated on the hydraulic cylinder body and is respectively connected with a first cavity and a second cavity, a piston dynamic sealing piece mounting position, a first-stage piston rod dynamic sealing mounting position and a second-stage piston rod dynamic sealing mounting position are arranged inside the hydraulic cylinder body, and the guide sleeve is mounted at a first end of the hydraulic cylinder body.
Preferably, the second earring is connected with the first fixing pin through interference fit, and the first earring is connected with the second fixing pin through interference fit.
Preferably, the guide sleeve is externally assembled with the static sealing ring and the hydraulic cylinder body through threads, and is internally provided with a fixing groove, and the tested piston rod dynamic sealing element is installed on the fixing groove.
Preferably, the rolling bearing is mounted on the guide rail, and is slidably moved relative to the guide rail and supported by the guide rail.
Further, the hydraulic cylinder tool is used for installing the tested piston rod dynamic sealing element and can be designed and adjusted according to the model and the size of the tested piston rod dynamic sealing element.
Preferably, the oil pressure in the valve block and the oil pipe can be adjusted according to the indication value of the pressure sensor.
Compared with the prior art, the invention has the following advantages:
1. the invention allows two hydraulic cylinder tools to be tested simultaneously, namely two groups of tested piston rod dynamic sealing elements are tested simultaneously, thereby greatly improving the test efficiency.
2. Because fixed frock can freely be adjusted on the bottom plate, consequently can be through changing the size of pneumatic cylinder frock to the sealing member of equidimension, model experimental, the test range is wider.
3. The invention introduces a force sensor, a temperature sensor and a pressure sensor, can adjust the load and the oil pressure, and can monitor the friction force of a dynamic sealing element, the temperature of oil in a hydraulic cylinder tool and the oil pressure in real time.
4. Compared with a traditional dynamic seal test bed, the dynamic seal test bed more conforms to the environment and the motion state of the dynamic seal of the tested piston rod in the actual situation, and the test result is more accurate.
Drawings
FIG. 1 is a schematic structural diagram of a dynamic seal testing device according to the present invention;
FIG. 2 is a schematic diagram of a first apparatus of the present invention;
FIG. 3 is a schematic structural diagram of a second partial device of the present invention; and
fig. 4 is a schematic structural view of the hydraulic cylinder tool of the present invention.
Detailed Description
The technical contents, structural features, attained objects and effects of the present invention are explained in detail below with reference to the accompanying drawings.
The invention provides a double-loading type abrasion test device for reciprocating dynamic sealing of an actuating cylinder, which comprises a fixing device 01, a connecting and supporting device 03, a loading test device 02 and a detection device 04 as shown in figures 1-3, wherein the fixing device 01 comprises a test bed bottom plate 16, a first fixing tool 2, a second fixing tool 4 and a third fixing tool 15, the first fixing tool 2, the second fixing tool 4 and the third fixing tool 15 are arranged on the test bed bottom plate 16 through fixing nuts 1, the distance between the first fixing tool 2 and the third fixing tool 15 can be adjusted according to test requirements, and the second fixing tool 4 is arranged between the first fixing tool 2 and the third fixing tool 15.
Connecting support device 03 includes antifriction bearing 5, connect frock 6, guide rail 9, second earring 17 and first fixed pin 18, the cylinder body end of loading servo cylinder 3 is installed on first fixed frock 2, guide rail 9 is equipped with two, the symmetry is installed between the fixed frock 4 of second and the fixed frock 15 of third, connect frock 6 through antifriction bearing 5 support mounting on two guide rails 9, second earring 17 is installed to the piston rod end of loading servo cylinder 3, and second earring 17 links firmly on connecting frock 6 through first fixed pin 18.
The loading test device 02 comprises a loading servo cylinder 3, a hydraulic cylinder tool 13, an oil pipe 14, a valve block 12, a first lug ring 7 and a second fixing pin 19, the detection device 04 comprises a force sensor 8, a temperature sensor 10 and a pressure sensor 11, the first end of the hydraulic cylinder tool 13 is arranged on a third fixing tool 15, the second end is connected with the force sensor 8, the force sensor 8 is connected with the first lug ring 7, and the first earring 7 is fixedly connected on the connecting tool 6 through a second fixing pin 19, the first end of the valve block 12 is installed on the hydraulic cylinder tool 13 through threads, the first end of the oil pipe 14 is connected on the valve block 12, the second end of the oil pipe is connected on the pump station, the pressure sensor 11 is installed on the valve block 12, the temperature sensor 10 is installed on the valve block 12 through threads, and two sets of the loading test device 02 and the detection device 04 are respectively and symmetrically installed between the second fixing tool 4 and the third fixing tool 15.
As shown in fig. 4, the hydraulic cylinder tooling 13 mainly includes a hydraulic cylinder body 20, a hydraulic cylinder piston rod 21 and a guide sleeve 22, a hydraulic pipeline 29 is integrated on the hydraulic cylinder body 20 and is respectively connected with the left and right chambers of the hydraulic cylinder, a piston dynamic seal mounting position 23, a primary piston rod dynamic seal mounting position 24 and a secondary piston rod dynamic seal mounting position 25 are arranged inside the hydraulic cylinder body 20, and the guide sleeve 22 is mounted at a first end of the hydraulic cylinder body 20.
The second ear ring 17 is connected with the first fixing pin 18 by interference fit, and the first ear ring 7 is connected with the second fixing pin 19 by interference fit. The guide sleeve 22 is externally fitted with a static seal ring 26 and a cylinder block 20 by means of a screw, and is internally provided with a fixing groove 27 to which a piston rod dynamic seal 28 to be tested is fitted. The rolling bearing 5 is mounted on the guide rail 9, and is slidably moved relative to the guide rail 9 and supported by the guide rail 9. The hydraulic cylinder tool 13 is provided with a tested piston rod dynamic seal 28, and can be designed and adjusted according to the model and the size of the tested piston rod dynamic seal 28. The pressure of the oil in the valve block 12 and the oil pipe 14 can be adjusted according to the indication of the pressure sensor 11.
Furthermore, the first fixing tool 2, the second fixing tool 4 and the third fixing tool 15 are fixed on the test bed bottom plate 16 through the fixing bolts 1, and support and fix are provided for the whole test device. The left end of the loading servo cylinder 3 is fixed on the first fixing tool 2 through a fixing bolt and used for providing controllable displacement for the testing device. The right end of the loading servo cylinder 3 is mounted with the connecting tool 6 by a second lug 17 and a first fixing pin 18 for transmitting the force and displacement output by the loading servo cylinder 3 to the right support part and the hydraulic cylinder tool 13. The first fixing pin 18 and the joint bearing in the second earring 17 adopt interference fit, and the axial connection rigidity of loading is effectively increased.
The first fixing pin 18 and the connecting tool 6 are in interference fit, and the axial connecting rigidity of the loading can be increased. The rolling bearing 5 and the connecting tool 6 are in interference fit and are fixedly connected together. The rolling bearing 5 is in sliding fit with the guide rail 9, vertical support is provided for the hydraulic cylinder tool 13 and the loading servo cylinder 3, and displacement transmission can be achieved through sliding. The first ear ring 7 is connected to the force sensor 8, wherein the tested piston rod dynamic seal 28 installed in the hydraulic cylinder tool 13 is an examination object of the test device, and the force sensor 8 is used for monitoring the total friction force borne by the tested piston rod dynamic seal 28 in the movement process.
The guide rail 9 is arranged on the second fixing tool 4 and the third fixing tool 15, and can bear the gravity action of a tested piece to complete the axial displacement of the actuating cylinder. The valve block 12 is installed on the hydraulic cylinder tool 13 through threaded connection, and plays a role of an oil pipeline. One end of the oil pipe 14 is connected to the valve block 12, and the other end of the oil pipe is connected to the pump station, so that oil can be transported in and out of the hydraulic cylinder tool 13. The temperature sensor 10 is installed on the valve block 12 through threaded connection, and can monitor the temperature of oil at the inlet and the outlet of the hydraulic cylinder tool 13 in real time. The pressure sensor 11 is installed on the valve block 12 through threaded connection, and the pressure of oil in the hydraulic cylinder tool 13 can be monitored in real time.
The cylinder body 20 is used for providing an oil environment for the tested piston rod dynamic seal 28 and bearing oil pressure. The hydraulic cylinder piston rod 21 is used for installing a tested piston rod dynamic seal 28. The oil pipeline 29 can realize the circulation of oil and the conversion of the motion direction of the piston.
The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the invention, it should be understood that various modifications and adaptations can be made by those skilled in the art without departing from the principles of the present application and should be considered as within the scope of the present application.
Claims (6)
1. A double-loading type wear test device for reciprocating sealing of an actuating cylinder is characterized by comprising a fixing device, a connecting and supporting device, a loading test device and a detection device,
the fixing device comprises a test bed bottom plate, a first fixing tool, a second fixing tool and a third fixing tool, the first fixing tool, the second fixing tool and the third fixing tool are installed on the test bed bottom plate through fixing nuts, the distance between the first fixing tool and the third fixing tool can be adjusted according to test requirements, and the second fixing tool is installed between the first fixing tool and the third fixing tool;
the connecting and supporting device comprises a rolling bearing, two connecting tools, guide rails, a second lug ring and a first fixing pin, the tail end of a cylinder body of the loading servo cylinder is arranged on the first fixing tool, the two guide rails are symmetrically arranged between the second fixing tool and the third fixing tool, the connecting tools are supported and arranged on the two guide rails through the rolling bearing, the second lug ring is arranged at the tail end of a piston rod of the loading servo cylinder, and the second lug ring is fixedly connected onto the connecting tools through the first fixing pin;
the loading test device comprises a loading servo cylinder, a hydraulic cylinder tool, an oil pipe, a valve block, a first lug ring and a second fixed pin, the detection device comprises a force sensor, a temperature sensor and a pressure sensor, the first end of the hydraulic cylinder tool is installed on the third fixed tool, the second end of the hydraulic cylinder tool is connected with the force sensor, the first lug ring is connected on the force sensor and fixedly connected on the connecting tool through the second fixed pin, the first end of the valve block is installed on the hydraulic cylinder tool through threads, the first end of the oil pipe is connected on the valve block, the second end of the oil pipe is connected on a pump station, the pressure sensor is installed on the valve block, the temperature sensor is installed on the valve block through threaded connection, the loading test device and the detection device are provided with two sets, the first fixing tool and the second fixing tool are symmetrically arranged between the first fixing tool and the second fixing tool respectively; and
the hydraulic cylinder tool comprises a hydraulic cylinder body, a hydraulic cylinder piston rod and a guide sleeve, a hydraulic pipeline is integrated on the hydraulic cylinder body and is respectively connected with a first cavity and a second cavity, a piston dynamic sealing piece mounting position, a primary piston rod dynamic seal mounting position and a secondary piston rod dynamic seal mounting position are arranged in the hydraulic cylinder body, and the guide sleeve is mounted at the first end of the hydraulic cylinder body; the loading test device and the detection device are provided with two sets and are respectively and symmetrically arranged between the second fixing tool and the third fixing tool; the rolling bearing is in sliding fit with the guide rail, provides vertical support for a hydraulic cylinder tool and a loading servo cylinder, and realizes the transmission of displacement through sliding; the tested piston rod dynamic seal installed in the hydraulic cylinder tool is an examination object of the test device, and the force sensor is used for monitoring the total friction force borne by the tested piston rod dynamic seal in the movement process.
2. A dual-load wear test apparatus for a ram reciprocating seal as defined in claim 1 wherein said second ear is connected to said first retaining pin by an interference fit and said first ear is connected to said second retaining pin by an interference fit.
3. A dual-load type wear test apparatus for a reciprocating ram seal as claimed in claim 1 wherein the guide sleeve is externally fitted to the cylinder block by a screw thread and a static seal ring, and internally provided with a fixed groove, the dynamic seal of the piston rod being tested being mounted thereto.
4. A dual-load wear test apparatus for a ram reciprocating seal as set forth in claim 3 wherein said rolling bearing is mounted on and slidably moves relative to said rail and is supported by said rail.
5. The dual-load wear test apparatus for a reciprocating ram seal as claimed in claim 1 wherein the hydraulic cylinder tooling mounts the tested piston rod dynamic seal and is adjustable by design depending on the type and size of the tested piston rod dynamic seal.
6. A dual load wear test apparatus for a reciprocating ram seal as set forth in claim 5 wherein the pressure of the oil in said valve block and said oil tube is adjustable based on the indication of said pressure sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911227542.1A CN111220488B (en) | 2019-12-04 | 2019-12-04 | Double-loading type wear test device for reciprocating dynamic sealing of actuating cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911227542.1A CN111220488B (en) | 2019-12-04 | 2019-12-04 | Double-loading type wear test device for reciprocating dynamic sealing of actuating cylinder |
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| CN111220488B true CN111220488B (en) | 2022-07-01 |
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| CN114965123B (en) * | 2022-04-07 | 2024-10-15 | 大连海事大学 | Piston skirt and cylinder sleeve friction and wear test device and test method |
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