CN105388075A - Tool for measuring ball head shearing strength of valve push rod - Google Patents
Tool for measuring ball head shearing strength of valve push rod Download PDFInfo
- Publication number
- CN105388075A CN105388075A CN201510915823.1A CN201510915823A CN105388075A CN 105388075 A CN105388075 A CN 105388075A CN 201510915823 A CN201510915823 A CN 201510915823A CN 105388075 A CN105388075 A CN 105388075A
- Authority
- CN
- China
- Prior art keywords
- sample
- push rod
- valve actuating
- actuating push
- bulb
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- 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
- G01N3/02—Details
- G01N3/04—Chucks
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a tool for measuring the ball head shearing strength of a valve push rod. The tool comprises a base, which is arranged on a testing machine; a sample table, which is arranged on the base, wherein the sample table is provided with a sample supporting hole, which is actually a through hole; and a sample locking mechanism, which is used to fix the body of a valve push rod in the sample supporting hole. The sample locking mechanism is a sample locking bolt, which is arranged on the sample table through thread connection. The sampling locking bolt is vertical to the sample supporting hole. The end part of the sample locking bolt can stretch into the sample supporting hole. The provided sample table can support valve push rods with different sizes through the sample supporting hole, and at the same time, the valve push rod can be locked by the sample locking mechanism, so the provided tool can carry out shearing strength tests on different valve push rods and has the advantages of simple structure, low cost, and user-friendliness.
Description
Technical field
The present invention relates to the field tests of valve actuating push rod bulb, particularly a kind of test fixture of bulb shear resistance of valve actuating push rod.
Background technology
Valve actuating push rod is one of element of engine valve formula valve actuating mechanism, and it is the driving parts between camshaft and rocking arm, and its effect when engine operation, the thrust of tappet is passed to rocking arm, to drive valve opening.Valve actuating push rod is an elongated hollow weldless steel tube, its upper end is arranged with a ball-and-socket, this ball-and-socket contacts with the bulb of the valve adjusting screw on rocking arm, and the lower end of valve actuating push rod is provided with a bulb, this bulb connects with the ball-and-socket in tappet, and the shaft of valve actuating push rod and the welding quality of bulb are the keys affecting Diesel Engine Complete Machine reliability and performance.In the process of work, valve tappet rotates because of the friction force difference on both sides, valve actuating push rod bulb is constantly subject to collision and the rubbing action of valve tappet, and depart from due to the central axis of cam and valve tappet, the bulb of valve actuating push rod is caused to be subject to the effect of shearing force, if bulb comes off, its function just lost by valve actuating push rod assembly.
The quality of connection of domestic diesel engine industry to the shaft of valve actuating push rod and bulb adopts pulling force method to detect always, but when valve actuating push rod bulb being detected with tension tester, axial stretching or pressure-off test can only be carried out to the bulb of the valve actuating push rod adopting rolling technology, for the associated specifications mainly shear resistance of the bulb of the valve actuating push rod of employing welding technology, if detected it with tension test, the quality of the welding quality of the bulb of valve actuating push rod can not be reflected well.And during employing pull force calculation, when likely detection pulling force does not also reach designing requirement, bulb will first be drawn cracked, the True Data of weld quality thus cannot be detected.Therefore, for adopting the quality of connection of the bulb of the valve actuating push rod of welding technology should be judged by test shear resistance, be to the acting force of the bulb of valve actuating push rod applying one perpendicular to the shaft of valve actuating push rod during test shear resistance by the pressure head on testing machine.
At present, when testing the shear resistance of the bulb of valve actuating push rod, due to the shaft size of the valve actuating push rod of each model and length all different, the different valve actuating push rod of frock to different model of design is needed to be fixed, to facilitate the pressure head of adjustment bulb alignment test machine, its process bothers very much, and the too much inconvenient FIXED MANAGEMENT of frock.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of test fixture of bulb shear resistance of valve actuating push rod, thus when overcoming the shear resistance of the bulb of existing test valve actuating push rod, need the shortcoming that the different valve actuating push rod of frock to different model of design detects.
For achieving the above object, the invention provides a kind of test fixture of bulb shear resistance of valve actuating push rod, wherein, comprising: base, it is arranged on testing machine; Sample bench, it is arranged on described base; This sample bench is provided with sample support hole, and described sample support hole is through hole; And sample latch mechanism, it is for being fixed on the shaft of valve actuating push rod in described sample support hole.
Preferably, in technique scheme, described sample latch mechanism is one be threaded connection the sample clamping screw be arranged on described sample bench, and described sample clamping screw is perpendicular to described sample support hole, and the end of described sample clamping screw can extend in described sample support hole.
Preferably, in technique scheme, described base is provided with abreast two chutes, and described chute is parallel to the axis in described sample support hole; Each described chute is connected with testing machine by base clamping screw.
Preferably, in technique scheme, described sample bench is fixed on described base by sample bench clamping screw.
Compared with prior art, the present invention has following beneficial effect:
1, sample bench of the present invention can support the valve actuating push rod of different size by sample support hole, and by sample latch mechanism, valve actuating push rod is locked, thus be applicable to carry out shear resistance test to the valve actuating push rod of different model, its structure is simple, cost is low and easy to use.
2, two chutes of base of the present invention are connected with testing machine by base clamping screw, thus base is slided along base clamping screw by chute, with can before and after the position of bulb of adjustment valve actuating push rod, thus facilitate the pressure head of Adjustment Tests machine to aim at bulb.
Accompanying drawing explanation
Fig. 1 is the front view of the test fixture of bulb shear resistance according to valve actuating push rod of the present invention.
Fig. 2 is the vertical view according to base of the present invention.
Main Reference Numerals illustrates:
1-base, 11-chute; 2-sample bench, 21-sample support hole, 22-sample locking screw holes; 3-sample clamping screw; 4-valve actuating push rod, 41-bulb; 5-pressure head.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole instructions and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or ingredient, and do not get rid of other element or other ingredient.
Fig. 1 to Fig. 2 shows the structural representation of the test fixture of the bulb shear resistance of valve actuating push rod according to the preferred embodiment of the present invention.The test fixture of the bulb shear resistance of this valve actuating push rod comprises base 1, sample bench 2 and sample latch mechanism, base 1 is arranged on testing machine, sample bench 2 is arranged on base 1, sample bench 2 is provided with sample support hole 21, sample support hole 21 is through hole, and the axis in sample support hole 21 distributes in the horizontal direction.The aperture in sample support hole 21 is greater than the shaft of valve actuating push rod 4, and the shaft of the valve actuating push rod 4 of different model all can be movable through sample support hole 21.Sample latch mechanism is used for the shaft of valve actuating push rod 4 to be fixed in sample support hole 21, preferably, continue with reference to figure 1, sample latch mechanism is one be threaded connection the sample clamping screw 3 be arranged on sample bench 2, sample bench 2 is provided with the sample locking screw holes 22 perpendicular to sample support hole 21, and sample locking screw holes 22 communicates with sample support hole 21, sample clamping screw 2 is screwed in sample locking screw holes 22, thus make sample clamping screw 3 perpendicular to sample support hole 21, and the end of sample clamping screw 3 can extend in sample support hole 21, the shaft of valve actuating push rod 4 is enclosed within after in sample support hole 21, just the shaft of valve actuating push rod 4 can be compressed by being screwed into sample clamping screw 3.
The shaft of valve actuating push rod 4 can move forward and backward along the axis in sample support hole 21, so that the front and back position of bulb 41 can be adjusted, bulb 41 can be aligned with the pressure head 5 on testing machine, pressure head 5 is arranged on testing machine by force application mechanism, it is perpendicular to the axis of valve actuating push rod 4, thus a vertical power can be applied to bulb 41, to test the shear resistance of the bulb 41 of valve actuating push rod 4.Sample bench 2 of the present invention can support the valve actuating push rod 4 of different size by sample support hole 21, and by sample latch mechanism, valve actuating push rod 4 is locked, thus be applicable to carry out shear resistance test to the valve actuating push rod 4 of different model, its structure is simple, cost is low and easy to use.
Aligning with pressure head 5 for further facilitating adjustment bulb 41, base 1 or sample bench 2 can be arranged to can carry out slide anteroposterior along the axis in sample support hole 21.Preferably, with reference to figure 2, base 1 is provided with abreast two chutes 11, and chute 11 is parallel to the axis in sample support hole 21, each chute 11 is connected with testing machine by base clamping screw in the present invention.Further preferably, sample bench 2 is fixed on base 1 by sample bench clamping screw.After unclamping base clamping screw, base 1 just can carry out slide anteroposterior by chute 11, with can before and after the position of bulb 41 of adjustment valve actuating push rod 4, thus facilitate the pressure head 5 of Adjustment Tests machine to aim at bulb 41.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (4)
1. a test fixture for the bulb shear resistance of valve actuating push rod, is characterized in that, comprising:
Base, it is arranged on testing machine;
Sample bench, it is arranged on described base; This sample bench is provided with sample support hole, and described sample support hole is through hole; And
Sample latch mechanism, it is for being fixed on the shaft of valve actuating push rod in described sample support hole.
2. the test fixture of the bulb shear resistance of valve actuating push rod according to claim 1, it is characterized in that, described sample latch mechanism is one be threaded connection the sample clamping screw be arranged on described sample bench, described sample clamping screw is perpendicular to described sample support hole, and the end of described sample clamping screw can extend in described sample support hole.
3. the test fixture of the bulb shear resistance of valve actuating push rod according to claim 1, is characterized in that, described base is provided with abreast two chutes, and described chute is parallel to the axis in described sample support hole; Each described chute is connected with testing machine by base clamping screw.
4. the test fixture of the bulb shear resistance of valve actuating push rod according to claim 3, is characterized in that, described sample bench is fixed on described base by sample bench clamping screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915823.1A CN105388075A (en) | 2015-12-10 | 2015-12-10 | Tool for measuring ball head shearing strength of valve push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915823.1A CN105388075A (en) | 2015-12-10 | 2015-12-10 | Tool for measuring ball head shearing strength of valve push rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105388075A true CN105388075A (en) | 2016-03-09 |
Family
ID=55420616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510915823.1A Pending CN105388075A (en) | 2015-12-10 | 2015-12-10 | Tool for measuring ball head shearing strength of valve push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105388075A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005076310A (en) * | 2003-09-01 | 2005-03-24 | Nisshin Steel Co Ltd | Pull-out resistance testing device for lock bolt and lock-bolt pull-out resistance testing method |
| CN102141489A (en) * | 2010-12-13 | 2011-08-03 | 中国航空工业集团公司北京航空材料研究院 | Clamp improving bending and interlaminar shearing test efficiency of composite material |
| CN102323165A (en) * | 2011-06-10 | 2012-01-18 | 重庆工程职业技术学院 | Material shearing strain multiple spot laser detector |
| CN103234816A (en) * | 2013-04-17 | 2013-08-07 | 上海理工大学 | Adjustable vertebrae fixing device |
| CN205175842U (en) * | 2015-12-10 | 2016-04-20 | 广西玉柴机器股份有限公司 | Valve push rod's bulb shear strength's test fixture |
-
2015
- 2015-12-10 CN CN201510915823.1A patent/CN105388075A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005076310A (en) * | 2003-09-01 | 2005-03-24 | Nisshin Steel Co Ltd | Pull-out resistance testing device for lock bolt and lock-bolt pull-out resistance testing method |
| CN102141489A (en) * | 2010-12-13 | 2011-08-03 | 中国航空工业集团公司北京航空材料研究院 | Clamp improving bending and interlaminar shearing test efficiency of composite material |
| CN102323165A (en) * | 2011-06-10 | 2012-01-18 | 重庆工程职业技术学院 | Material shearing strain multiple spot laser detector |
| CN103234816A (en) * | 2013-04-17 | 2013-08-07 | 上海理工大学 | Adjustable vertebrae fixing device |
| CN205175842U (en) * | 2015-12-10 | 2016-04-20 | 广西玉柴机器股份有限公司 | Valve push rod's bulb shear strength's test fixture |
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Application publication date: 20160309 |
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