CN202939100U - Lever-type semiautomatic valve rotating bending tester - Google Patents
Lever-type semiautomatic valve rotating bending tester Download PDFInfo
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- CN202939100U CN202939100U CN 201220686317 CN201220686317U CN202939100U CN 202939100 U CN202939100 U CN 202939100U CN 201220686317 CN201220686317 CN 201220686317 CN 201220686317 U CN201220686317 U CN 201220686317U CN 202939100 U CN202939100 U CN 202939100U
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Abstract
The utility model discloses a lever-type semiautomatic valve rotating bending tester, which belongs to mechanical detection equipment, and in particular relates to detection equipment for detecting anti-bending performance of a product through a fixed pressure of level transmission. The lever-type semiautomatic valve rotating bending tester is characterized in that a valve rotating driving device and a lever-type forcing device are arranged on an tester base; a valve chuck is arranged in the valve rotating driving device; the lever-type forcing device is composed of a supporting vertical rod on the base, a lever connected axially connected with the vertical rod through a pivot at the upper end of the vertical rod, a weight at the other end of the lever, and two press rollers at the lower side of the lever; and a middle line between the two press rollers is on a same vertical plane with the axial line of the valve chuck. The lever-type semiautomatic valve rotating bending tester disclosed by the utility model has the beneficial effects that through a set of lever device, the pivot acts on the outer circle of the valve, and a bending test can be finished with an accurate and stable pressure, so that the repeatability and reproducibility required for guaranteeing accuracy can be satisfied; and the tester is simple, low in operation cost and high in testing efficiency.
Description
Technical field
The utility model belongs to the mechanics checkout equipment, particularly uses the checkout equipment of lever transmission fixation pressure testing product bending resistance.
Background technology
Engine valve is key component, the consumable accessory on engine.The condition of work of valve is very harsh, stands the stress alternation that high temperature, high speed impact bring, and is operated under the environment that etchant gas washes away, and particularly along with the requirement of environmental protection is more and more higher, reduces discharging, improves power per liter, improves thermal technology's conversion efficiency; EFI, electronic control technology are being applied on engine, and engine has been strengthened in the application of these technology, have brought harsher condition of work also to this product of valve simultaneously.Valve needs to stand high temperature, stand burn into stands change impacts power and La Shenli fast.
In order to meet above-mentioned condition of work, when designing valve, the valve designer to design rational structure, and general inlet valve adopts whole martensitic material, modifier treatment, rod end high-frequency quenching; Exhaust valve adopts two body welded structures, and head is taked resistant to elevated temperatures austenite material, but bar section adopts the martensitic material of high-frequency quenching.Welding quality is very crucial, the moment high-tensile strength and impulsive force when weld strength must meet the quiet pulling force of valve spring and High Rotation Speed.
In the process of valve, generally adopt inertia friction welder to utilize High Rotation Speed that engine valve stem and valve head are welded together.Welding quality is decided by the stability of parameter.The key index of examination welding quality is exactly tensile strength, generally is not less than 900N/mm
2, the pulling force that this gives corresponding to valve use procedure medi-spring.But the detection of tensile strength can only be destructive detection, the general welding in the first batch detected and confirmed 3, as Verification and definite, can't accomplish 100% detection.And the valve welding quality is most important for engine, if the weld strength deficiency there will be the possibility in use ruptured from commissure, valve can drop in cylinder and smash up cylinder and piston from conduit at that rate, cause engine stop work even integral body scrap.In order to prevent this risk, adopt a kind of device can carry out the detection of 100% welding quality, there are harmless ultrasound examination and flexural loading to detect.A kind of mode is exactly that rotoflector detects preferably.Because ultrasound examination is the principle of utilizing sound wave to run into defect aggravation reflection wave, detected, the product strength of rosin joint not but the product that can be mistaken for by ultrasound wave sometimes.So it is can carry out the best mode of the stressed detection of 100% employing at present that rotoflector detects.
Used valve Apparatus for Bending at low-temp pressure roller is directly driven by hydraulic jack, and detecting power F is with oil cylinder area * oil cylinder working-pressure, and acts on the valve cylindrical by slide plate.Error is larger.Because oil pressure can change and change along with oil temperature, O-ring seal and slide plate lubrication circumstances are affecting pressure, inaccurate.
The utility model content
In order to overcome original valve Apparatus for Bending at low-temp pressure roller, directly by hydraulic jack, driven, detection power F is with oil cylinder area * oil cylinder working-pressure, and act on the valve cylindrical by slide plate, error is larger, and because oil pressure can change and change along with oil temperature, the shortcomings such as O-ring seal and slide plate lubrication circumstances are affecting pressure, inaccurate.The utility model provides the semi-automatic valve rotating bending test of a kind of lever machine, and the semi-automatic valve rotating bending test of this lever machine is to adopt a set of leverage of self-control, and point action, in the valve cylindrical, completes bending test with the pressure of accurate stable.
The utility model solves the technical scheme that its technical matters adopts: the semi-automatic valve rotating bending test of a kind of lever machine, it is characterized in that: valve rotation drive unit and lever augmentor are housed on plant bottom case, described valve rotation drive unit center is provided with the valve chuck, described lever augmentor is by the lever that is arranged on supported rod erecting on base and is connected with fulcrum shaft by the vertical rod upper end, two pressure rollers compositions that are positioned at the counterweight of the lever other end and are arranged on the lever downside, center line between two pressure rollers and valve chuck axis are positioned on same vertical plane.
The hydraulic jack that support lever is used also is housed on described base.
The using method of the semi-automatic valve rotating bending test of lever machine, it is characterized in that: comprise the steps: the A. default: by a top, be that force cell that the triangle bottom is rectangle is placed on the running roller below and makes lever maintenance level connect the circuit of dynamometry instrument with wire, progressively carry additionally counterweight until the data that the dynamometry instrument shows reach the bending test power that the need test valve of standard should reach, stop adding counterweight, primer fluid compressing cylinder support lever, withdraw from force cell, default completes
Bending test power computing formula F=(δ max * π * d
3)/(32 * L)
In formula: d: the engine valve stem diameter; L: stressed length=equal big end surface adds 2 millimeters apart from welding seam distance; δ: bar section intensity,
Rotating speed: 600-1000rpm,
B. detect: primer fluid compressing cylinder support lever rises, tested valve is put into to the valve chuck, start the valve rotation drive unit, hydraulic jack falls to making the rotatable rollers wheel to be pressed onto on the valve major part of rotation, continue rotation 2 seconds, if the commissure fracture can occur the problematic valve of welding quality under the effect of this power, do not have the valve of Welding Problems to pass through smoothly to detect.
Above-mentioned bending test power computing formula with reference to Shanghai Volkswagen's company standard " inlet valve and exhaust valve friction welding-annular curved test " (PV6210A6200/04813)
The existing control technology that can adopt the utility model realizes driving the upper and lower motion of lever and main shaft unclamps, clamps and be synchronized with the movement by hydraulic jack, with the raising detection efficiency.
The beneficial effects of the utility model are to adopt a set of leverage, and point action, in the valve cylindrical, completes bending test with the pressure of accurate stable.Can set the weight that loads counterweight accurately according to the theoretical bending test force value of measuring valve, guarantee that testing process is stable, have and meet the Repeatability and Reproducibility definitely required.Equipment is simple, operating cost is low, testing efficiency is high.Circletime (CT) is 4 seconds, can detect 18000 every day.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
The perspective view that Fig. 2 is Fig. 1,
Fig. 3 carries out the debugging mode schematic diagram before the utility model is used.
In figure, 1. valve rotation drive unit, 2. valve chuck, 3. supported rod erecting, 4. pressure roller, 5. lever, 6. fulcrum shaft, 7. counterweight, 8. hydraulic jack, 9. oil pipe, 10. tested valve, 11. bases, 12. force cells, 13. wires, 14. dynamometry instrument.
Embodiment
Embodiment of the present utility model is, as shown in the figure:
The hydraulic jack 8 that support lever is used also is housed on described base.
The using method of the semi-automatic valve rotating bending test of lever machine, comprise the steps: the A. default: be that force cell 12 that the triangle bottom is rectangle is placed on the running roller below and makes lever maintenance level connect force cell and dynamometry instrument 14 with wire 13 by a top, progressively carry additionally counterweight until the data that the dynamometry instrument shows reach the bending test power that the need test valve of standard should reach, stop adding counterweight, primer fluid compressing cylinder support lever, withdraw from force cell, default completes
Bending test power computing formula F=(δ max * π * d
3)/(32 * L)
In formula: d: the engine valve stem diameter; L: stressed length=equal big end surface adds 2 millimeters apart from welding seam distance; δ: bar section intensity,
Rotating speed: 600-1000rpm,
B. detect: primer fluid compressing cylinder support lever rises, tested valve is put into to the valve chuck, start the valve rotation drive unit, hydraulic jack falls running roller is pressed onto on the valve major part of rotation, continue rotation 2 seconds, if the commissure fracture can occur the problematic valve of welding quality under the effect of this power, do not have the valve of Welding Problems to pass through smoothly to detect.
Claims (2)
1. the semi-automatic valve rotating bending test of a lever machine, it is characterized in that: valve rotation drive unit and lever augmentor are housed on plant bottom case, described valve rotation drive unit center is provided with the valve chuck, described lever augmentor by being arranged on lever that supported rod erecting on base is connected with fulcrum shaft by the vertical rod upper end, two rotatable pressure rollers being positioned at the counterweight of the lever other end and being arranged on the lever downside form, the center line between two pressure rollers and valve chuck axis are positioned on same vertical plane.
2. the semi-automatic valve rotating bending test of lever according to claim 1 machine, is characterized in that: the hydraulic jack that support lever is used also is housed on described base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686317 CN202939100U (en) | 2012-12-13 | 2012-12-13 | Lever-type semiautomatic valve rotating bending tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686317 CN202939100U (en) | 2012-12-13 | 2012-12-13 | Lever-type semiautomatic valve rotating bending tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939100U true CN202939100U (en) | 2013-05-15 |
Family
ID=48323331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220686317 Expired - Lifetime CN202939100U (en) | 2012-12-13 | 2012-12-13 | Lever-type semiautomatic valve rotating bending tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998188A (en) * | 2012-12-13 | 2013-03-27 | 济南沃德汽车零部件有限公司 | Lever-type semi-automatic valve rotation bending tester |
-
2012
- 2012-12-13 CN CN 201220686317 patent/CN202939100U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998188A (en) * | 2012-12-13 | 2013-03-27 | 济南沃德汽车零部件有限公司 | Lever-type semi-automatic valve rotation bending tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |
|
| CX01 | Expiry of patent term |