CN203557290U - Fixture device for fatigue test of cylinder sleeve - Google Patents
Fixture device for fatigue test of cylinder sleeve Download PDFInfo
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- CN203557290U CN203557290U CN201320663835.6U CN201320663835U CN203557290U CN 203557290 U CN203557290 U CN 203557290U CN 201320663835 U CN201320663835 U CN 201320663835U CN 203557290 U CN203557290 U CN 203557290U
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Abstract
The utility model discloses a fixture device for a fatigue test of a cylinder sleeve, and relates to a fixture device of a cylinder sleeve. The fixture device comprises an upper fixture and a lower fixture which are installed on a testing machine, wherein an upper connecting pair is arranged on the upper fixture; a lower connecting pair is arranged on the lower fixture; the upper connecting pair comprises an upper connecting plate connected with the upper end of a test assembly; the upper connecting plate is connected with an upper-end column head on a test bed of the testing machine through a connecting part I; the lower connecting pair comprises a lower connecting plate connected with the lower end of the test assembly; and the lower connecting plate is connected with a lower-end column head on the test bed of the testing machine through a connecting part II. With the adoption of the fixture device, the internal combustion engine test assembly to be subjected to the cylinder sleeve fatigue life test can be installed on the high-frequency fatigue testing machine conveniently, installation and clamping operations are simple, machining is facilitated, and the cost is low.
Description
Technical field
The utility model relates to a kind of grip device of cylinder jacket, is specially a kind of grip device of cylinder jacket fatigue test.
Background technology
Cylinder jacket is one of important spare part of internal combustion engine, along with internal combustion engine is towards lightweight, high rotating speed, high-power future development, the structure and material of cylinder jacket needs to change, most typical as expansion cylinder, and after expansion cylinder, can its reliability and durability meet the demands and cause people's extensive concern.The influence factor of cylinder jacket fatigue failure mainly comprises two aspects: 1, thermic load effect: mainly due to cylinder jacket inside and outside wall, have the larger temperature difference, cause that cylinder jacket inside and outside wall is subject to periodically, inhomogeneous thermal stress; 2, mechanical load effect: mainly from installation pretightening force, gaseous-pressure, side thrust of piston etc.
At present, the method that mainly adopts finite element simulation calculation fatigue life of research cylinder jacket, the accuracy of its result of calculation needs verification experimental verification.The stressing conditions of cylinder jacket is very complicated, considers the stressed design experiment that carries out of cylinder jacket, and difficulty is large, result of the test accuracy is not high, therefore, for the mechanical load of cylinder jacket, carries out design experiment, for next step compbined test, does basis, is necessary.Owing to lacking corresponding test apparatus, the test of related fields is little.Along with the appearance of HF fatigue testing machine, for the test of design this respect provides hardware supported.Cylinder jacket is a part for internal combustion engine, and its installation fixedly has specific requirement, and therefore based on HF fatigue testing machine, for cylinder jacket is carried out fatigue test, the installation stationary fixture of design specialized is necessary.
Utility model content
The purpose of this utility model is just to provide a kind of grip device of cylinder jacket fatigue test, and cylinder jacket is arranged on HF fatigue testing machine, carries out cylinder jacket and be subject to the fatigue life test of mechanical load effect.
To achieve these goals, the technical solution of the utility model is: a kind of grip device of cylinder jacket fatigue test, comprise the upper fixture and the lower clamp that are arranged on testing machine, upper fixture is provided with and connects pair, it is secondary that lower clamp is provided with lower connection, the upper pair that connects comprises a upper joint cover being connected with test assembly upper end, upper joint cover is connected with the upper end column cap on testing machine testboard by connector I, the lower pair that connects comprises a lower joint cover being connected with test assembly lower end, lower joint cover is connected with the lower end column cap on testing machine testboard by connector II.
Described connector I is studs, and one end of studs is arranged in the screwed hole at joint cover center, and the other end of studs is connected in the interior connection nut I of upper end column cap.
The surrounding of described upper joint cover is bolted and is being positioned in the cylinder head of test assembly upper end.
Described connector II is bolt, and bolt is connected in the interior connection nut II of lower end column cap through the bolt hole at lower joint cover center.
The both sides of described lower joint cover are bolted and are being positioned on the bearing cap of test assembly lower end.
Beneficial effect: grip device of the present utility model can be arranged on the engine test assembly of pending cylinder jacket fatigue life test on HF fatigue testing machine very easily, is installed simple to operate, is easy to processing, cost is low.By this grip device, can be better in method simulation internal combustion engine working process with test, the fatigue life of cylinder jacket under bolt pretightening and gas explosion pressure action condition.
Accompanying drawing explanation
Fig. 1 is assembly structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of upper joint cover of the present utility model.
In figure, be labeled as: 1, upper connection is secondary 2, lower connections be secondary, 3, test assembly, 4, upper joint cover, 5, connector I, 6, upper end column cap, 7, lower joint cover, 8, connector II, 9, lower end column cap, 10, interior connection nut I, 11, cylinder head, 12, interior connection nut II, 13, lower end column cap external compression nut, 14, upper end column cap external compression nut, 15, cylinder jacket, 16, head gasket, 17, pad, 18, testing machine testboard, 19, screwed hole, 20, bolt hole.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
A kind of grip device of cylinder jacket fatigue test, comprise the upper fixture and the lower clamp that are arranged on testing machine, upper fixture is provided with and connects secondary 1, lower clamp is provided with lower connection secondary 2, the upper pair 1 that connects comprises a upper joint cover 4 being connected with test assembly 3 upper ends, the surrounding of upper joint cover 4 is bolted and is being positioned in the cylinder head 11 of test assembly 3 upper ends, on one group of opposite side of upper joint cover 4, be respectively equipped with two bolts, on another group opposite side, be respectively equipped with a bolt, upper joint cover 4 is connected with the upper end column cap 6 on testing machine testboard 18 by connector I 5, connector I 5 is studs, one end of studs is arranged in the screwed hole 19 at joint cover 4 centers, the other end of studs is connected in the interior connection nut I 10 of upper end column cap 6, the outside of upper end column cap 6 is provided with upper end column cap external compression nut 14, in upper end column cap external compression nut 14, be provided with interior connection nut I 10.The lower pair 2 that connects comprises a lower joint cover 7 being connected with test assembly 3 lower ends, the both sides of lower joint cover 7 are bolted and are being positioned on the bearing cap of test assembly 3 lower ends, lower joint cover 7 is connected with the lower end column cap 9 on testing machine testboard 18 by connector II 8, connector II 8 is bolt, bolt is connected in the interior connection nut II 12 of lower end column cap 9 through the bolt hole at lower joint cover 7 centers, lower end column cap 9 outside be provided with lower end column cap external compression nut 13, in lower end column cap external compression nut 13, be provided with interior connection nut II 12.
Described test assembly 3 is cylinder jacket of diesel engine to be tested, the six-cylinder engine carrying take certain vehicle is as example, for the ease of being installed, need do certain processing to it, its process mainly comprises three parts: 1, line cutting assembly, take the front end of internal combustion engine as benchmark, and take cross the second cylinder axis axis perpendicular to the plane of crankshaft direction as line cutting planes, cylinder head 11, head gasket 16 and IC engine airframe are carried out to line cutting, and the front end that retains internal combustion engine is test body.2, take cylinder head 11 lower surfaces as benchmark, its upper surface finish-milling 20mm.3, take the upper surface of crankshaft bearing end cap as benchmark, its underpart milling is flat.
Before test, with grip device of the present utility model, test assembly 3 is fixed on the testboard of HF fatigue testing machine, its installation process divides three steps to complete.The first step, test assembly 3 bottoms are installed fixing, the upper end column cap 6 of rising HF fatigue testing machine is to certain height (determining according to the height of test assembly), place in the column cap of HF fatigue testing machine lower end and connect nut II 12 in lower end column cap external compression nut 13, lower end column cap external compression nut 13 is tightened on lower end column cap 9, the bolt of connector II 8 is through the bolt hole at lower joint cover 7 centers, and with nuts, apply certain pretightning force and tighten, again four bolts for joint test assembly 3 bottom end bearing lids are first passed to the both sides of lower joint cover 7, form the lower pair 2 that connects, then the bolt of manually tightening connector II 8 connects in nut II 12 in the column cap of lower end, place test assembly 3 on lower joint cover 7, note alignment bolt hole, applying certain pretightning force is fixed on the lower end of test assembly 3 on lower clamp by four bolts of lower joint cover 7 both sides.Second step, test assembly top is installed fixing, in the upper end of placement HF fatigue testing machine, connect nut I 10 in upper end column cap external compression nut 14, manually tighten upper end column cap external compression nut 14 on the upper end of HF fatigue testing machine column cap 6, applying certain pretightning force tightens the studs of connector I 5 and in upper end, connects in nut I 10, six bolts, respectively through six bolts hole of upper joint cover 4 surroundings, are applied to certain pretightning force pad 17, upper joint cover 4 are tightened on the studs of connector I 5.The 3rd step, test assembly middle part is installed fixing, slightly rotate test assembly 3, the bolt hole in six bolt alignment test assembly 3 upper end cylinder head 11 through upper joint cover 4 surroundings, place and align head gasket 16 on IC engine airframe, reduce HF fatigue testing machine upper end column cap 6, until the average load on HF fatigue testing machine monitoring of software stops while being negative value.With pretightning force spanner, according to pretightning force, applying technique is testing six bolt tightenings of upper joint cover 4 surroundings on the body of assembly 3.Finally, with special spanner, applying certain pretightning force again tightens HF fatigue testing machine lower end column cap external compression nut 13 and HF fatigue testing machine upper end column cap external compression nut 14 successively, complete the process that is installed of test assembly 3, in the process that is installed, guarantee that screwed hole of centre axis, the test cylinder jacket central axis of assembly 3 inside and the bolt hole axis at lower joint cover 7 centers three lines of upper joint cover 4 overlap.
During test, input as requested corresponding parameter: average load, alternate load and cycle-index etc., then start test.
Claims (5)
1. the grip device of a cylinder jacket fatigue test, comprise the upper fixture and the lower clamp that are arranged on testing machine, it is characterized in that: upper fixture is provided with and connects secondary (1), lower clamp is provided with lower connection secondary (2), the upper pair (1) that connects comprises a upper joint cover (4) being connected with test assembly (3) upper end, upper joint cover (4) is connected with the upper end column cap (6) on testing machine testboard (18) by connector I (5), the lower pair (2) that connects comprises a lower joint cover (7) being connected with test assembly (3) lower end, lower joint cover (7) is connected with the lower end column cap (9) on testing machine testboard (18) by connector II (8).
2. the grip device of a kind of cylinder jacket fatigue test as claimed in claim 1, it is characterized in that: described connector I (5) is studs, one end of studs is arranged in the screwed hole at joint cover (4) center, and the other end of studs is connected in the interior connection nut I (10) of upper end column cap (6).
3. the grip device of a kind of cylinder jacket fatigue test as claimed in claim 1, is characterized in that: the surrounding of described upper joint cover (4) is bolted and is being positioned in the cylinder head (11) of test assembly (3) upper end.
4. the grip device of a kind of cylinder jacket fatigue test as claimed in claim 1, it is characterized in that: described connector II (8) is bolt, and bolt is connected in the interior connection nut II (12) of lower end column cap (9) through the bolt hole at lower joint cover (7) center.
5. the grip device of a kind of cylinder jacket fatigue test as claimed in claim 1, is characterized in that: the both sides of described lower joint cover (7) are bolted and are being positioned on the bearing cap of test assembly (3) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663835.6U CN203557290U (en) | 2013-10-25 | 2013-10-25 | Fixture device for fatigue test of cylinder sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663835.6U CN203557290U (en) | 2013-10-25 | 2013-10-25 | Fixture device for fatigue test of cylinder sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203557290U true CN203557290U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320663835.6U Expired - Fee Related CN203557290U (en) | 2013-10-25 | 2013-10-25 | Fixture device for fatigue test of cylinder sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203557290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115719A (en) * | 2015-09-30 | 2015-12-02 | 河南科技大学 | Ultrasonic sensor-based cylinder sleeve high frequency fatigue test system |
-
2013
- 2013-10-25 CN CN201320663835.6U patent/CN203557290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115719A (en) * | 2015-09-30 | 2015-12-02 | 河南科技大学 | Ultrasonic sensor-based cylinder sleeve high frequency fatigue test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20161025 |