CN209589472U - A kind of diesel engine connecting bar fatigue experiment fixture - Google Patents
A kind of diesel engine connecting bar fatigue experiment fixture Download PDFInfo
- Publication number
- CN209589472U CN209589472U CN201920640392.6U CN201920640392U CN209589472U CN 209589472 U CN209589472 U CN 209589472U CN 201920640392 U CN201920640392 U CN 201920640392U CN 209589472 U CN209589472 U CN 209589472U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- fixture
- pin shaft
- small end
- rod tip
- Prior art date
- 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.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The purpose of this utility model is to provide a kind of diesel engine connecting bar fatigue experiment fixtures, including wrist-pin end of connecting rod fixture and connecting rod tip fixture；The wrist-pin end of connecting rod fixture includes clamp head, the parallel double wall of small end fixture, small end pin shaft, small end pin shaft hole is opened up in the two side walls of the parallel double wall of small end fixture, part between the two side walls of the parallel double wall of small end fixture is the hollow space for wrist-pin end of connecting rod to be arranged, small end pin shaft is arranged in two small end pin shaft holes, and clamp head is fixed on above the parallel double wall of small end fixture；The connecting rod tip fixture includes connecting rod tip pedestal, connecting rod tip fixture stand, big end pin shaft, connecting rod tip fixture stand is mounted on connecting rod tip pedestal by bolt, big end pin shaft hole is opened up in the two side walls of connecting rod tip fixture stand, big end pin shaft is arranged in two big end pin shaft holes.The position for the installation and adjustment fixture that the utility model can be convenient, it is time saving and energy saving, the damage to equipment is reduced, man power and material is dramatically saved.
Description
Technical field
The utility model relates to a kind of mechanical frock fixtures, the specifically frock clamp of diesel engine connecting bar.
Background technique
Diesel engine connecting bar includes connecting rod tip, wrist-pin end of connecting rod, connecting rod shank, connecting rod tip lid, connecting-rod bolts and connecting rod bearing shell.
Wrist-pin end of connecting rod is connected by piston pin with piston, and the gas pressure and reciprocal inertia force that will act on piston are transmitted to connecting rod.Even
Bar big end is connected with crankshaft, and in order to be convenient to mount and dismount, connecting rod tip is separated, and big end top is integrated with shaft, and lower part is connecting rod
Big end cap.
As components important in diesel engine, the strength relationship of connecting rod is directly related to the service life of complete machine, therefore connecting rod
Fatigue experiment research has great importance.Connecting rod in practical work process mainly by tension and compression stress, especially in air inlet
Stress reaches maximum value at the top dead centre of stroke.Connecting rod fatigue test mainly simulates the reversed fatigue being added on connecting rod and answers masterpiece
With the state change of lower link.There are strict requirements to the placement position of the centering of fixture and connecting rod in experimentation, therefore
The connecting rod and its fixture for needing to adjust installation cumbersome repeatedly, cause a large amount of manpowers and waste of time.
Summary of the invention
The purpose of this utility model is to provide a kind of diesel engine connecting bar fatigue experiment fixtures convenient for assembly and disassembly and adjustment.
Purpose of the utility model is realized as follows:
A kind of diesel engine connecting bar fatigue experiment fixture of the utility model, it is characterized in that: including wrist-pin end of connecting rod fixture and connecting rod
Big end fixture；The wrist-pin end of connecting rod fixture includes clamp head, the parallel double wall of small end fixture, small end pin shaft, and small end fixture presss from both sides in parallel
Small end pin shaft hole is opened up in the two side walls of wall, the part between the two side walls of the parallel double wall of small end fixture is for being arranged
The hollow space of wrist-pin end of connecting rod, small end pin shaft are arranged in two small end pin shaft holes, and clamp head is fixed on small end fixture and presss from both sides in parallel
Above wall；The connecting rod tip fixture includes connecting rod tip pedestal, connecting rod tip fixture stand, big end pin shaft, connecting rod tip folder
Tool stand is mounted on connecting rod tip pedestal by bolt, opens up big end pin shaft in the two side walls of connecting rod tip fixture stand
Hole, big end pin shaft are arranged in two big end pin shaft holes.
The utility model can also include:
1, it is arranged on the inside of the two side walls of the parallel double wall of small end fixture with the junction of small end pin shaft and wrist-pin end of connecting rod small
Hold anti-mill.
2, the place setting being in contact on the inside of the two side walls of the parallel double wall of small end fixture with anti-mill for the anti-mill of adjustment,
The wrist-pin end of connecting rod slideway of wrist-pin end of connecting rod position.
3, slideway is set on connecting rod tip pedestal, and the bolt for connecting connecting rod tip fixture stand and connecting rod tip pedestal is located at
In slideway, bolt in slideway slidably.
4, slideway is located at convex shoulder of the position setting of connecting rod tip base bottom for the nut of fixing bolt.
5, the small end bolt holes for preventing small end pin shaft from rotating are set on small end pin shaft, and setting prevents pin shaft from turning on big end pin shaft
Dynamic big-end bolt hole；The setting of connecting rod tip base bottom prevents the oval horizontal direction for hindering connecting rod lower end mobile because of testing stand recessed
Slot.
The advantage of the utility model is: the bolt of lower base of double wall bolt and big end fixture by small end fixture can be square
Just the position of installation and adjustment fixture, it is time saving and energy saving, the damage to equipment is reduced, is also the fatigue experiment of diesel engine connecting bar
Dramatically save man power and material.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the cross-sectional view of wrist-pin end of connecting rod fixture；
Fig. 3 is the top view of connecting rod tip fixture；
Fig. 4 is the bottom view of connecting rod tip fixture；
Fig. 5 is fatigue test board schematic diagram.
Specific embodiment
It illustrates with reference to the accompanying drawing and the utility model is described in more detail:
In conjunction with Fig. 1-5, a kind of diesel engine connecting bar fatigue test clamper of the utility model, including wrist-pin end of connecting rod fixture and connecting rod
Big end fixture.Wrist-pin end of connecting rod fixture includes the connector 1 being connected with fatigue tester hydraulically operated fixture and is provided with the parallel of pin shaft hole
Double wall 2 and pin shaft 3；Connecting rod tip fixture includes pedestal 6 and stand 4, and pin shaft 5 is used for the positioning of connecting rod tip.
Connecting rod tip fixture stand 4 and 6 joint facility of pedestal slideway 7, allow the stand being connected with connecting rod tip can
To horizontally slip, can easily be realized by slide bolt when adjusting the position of connecting rod.
6 back side of pedestal of connecting rod tip fixture is provided with two convex shoulders 8 in 7 two sides of bolt slide channel, when adjustment good position needs
When critical fixation rod big end is tested, can on convex shoulder 8 fastening nut.
The pedestal 6 of connecting rod tip fixture is equipped with bolt hole 9 and connecting rod and fixture is tightly connected with testing stand.
The back side of the pedestal 6 of connecting rod tip fixture, which is set, to prevent there are two oval horizontal direction groove 10 because testing stand hinders to connect
The movement of bar lower end, make the pedestal 6 of fixture with fatigue test board is even closer is bonded.
Wrist-pin end of connecting rod pivot pin 3, which is equipped with bolt hole 11, prevents the rotation of pivot pin.
The bolt hole 11 for preventing pivot pin from rotating similarly is equipped on connecting rod tip pivot pin 5.
The parallel double wall 2 of wrist-pin end of connecting rod fixture is equipped with anti-mill 12 with the junction of pin shaft 3 and wrist-pin end of connecting rod, greatly reduces
Wrist-pin end of connecting rod is to the wear damage of tired double wall during fatigue test, and only needs to anti-mill when fatigue rupture occurs
It is replaced, and is not had to remanufacture out complex process, the small end double wall 2 to involve great expense.
Connecting rod double wall 2 and anti-12 junction of mill are provided with the shifting chute 13 of 12mm, facilitate the position of adjustment wrist-pin end of connecting rod, exempt from
In addition to the difficulty for assembling and disassembling bulky pin shaft fixture repeatedly.
The parallel double wall of small end clamp body and wrist-pin end of connecting rod joint use anti-mill, prevent fixture and connecting rod in the mistake of experiment
The parallel double wall of small end fixture is worn in journey and anti-mill joint is equipped with groove, and parallel walls are externally provided with bolt hole, by adjusting spiral shell
The position of the adjustable anti-mill of the length of bolt, to realize the position adjustment of wrist-pin end of connecting rod.It is set on wrist-pin end of connecting rod fixture pin shaft
Bolt hole is set, with fixed pin shaft, prevents pin shaft from moving axially.Big end clamp body pedestal is connected by screw bolts with stand, bottom
Seat bolt hole uses slideway form, facilitates the attaching process of connecting rod tip and laboratory holder, is also conducive to later period adjustment connecting rod tip
Position.Connecting rod can be adapted for a plurality of types of diesel engine connecting bars using only replacement pin shaft and the form with sleeve
Fatigue test, and do not have to test all transducer set fixtures each time, not only waste material but also labor intensive and time.
As shown in Figure 1, connecting rod fatigue test clamper includes small end fixture and big end fixture.Small end fixture will be as shown in Fig. 2, will
Anti- mill is mounted on 13 on two sliding grooves of small end, and wrist-pin end of connecting rod is then inserted into the groove between small end fixture parallel walls 2, with
Pin shaft 3 is passed through into pin shaft hole afterwards.There is the bolt of adjustment double wall spacing on parallel double wall, the depth that we are inserted by adjusting bolt
Degree is to change the distance of parallel double wall.After having adjusted position, the bolt on small end pin shaft is installed, the position of pin shaft is controlled
It sets.
The front and back sides of big end fixture are as shown in Figure 3 and Figure 4, after anti-mill 12 is connected with the stand 4 of connecting rod tip fixture
It is fixed by pin shaft 5 across pin shaft hole.Connecting bolt by the bolt being mounted on slideway between stand 5 and pedestal 6 can be in cunning
It horizontally slips on road 7, so as to simply realize centering requirement.After the adjustment of position, the bolt on pin shaft is tightened, and will
Pedestal is connected with testing stand.Apply alternate stress in the vertical direction, completes the fatigue test of connecting rod.
Claims (8)
1. a kind of diesel engine connecting bar fatigue experiment fixture, it is characterized in that: including wrist-pin end of connecting rod fixture and connecting rod tip fixture；It is described
Wrist-pin end of connecting rod fixture includes clamp head, the parallel double wall of small end fixture, small end pin shaft, in the two side walls of the parallel double wall of small end fixture
Small end pin shaft hole is opened up, the part between the two side walls of the parallel double wall of small end fixture is for the hollow of wrist-pin end of connecting rod to be arranged
Part, small end pin shaft are arranged in two small end pin shaft holes, and clamp head is fixed on above the parallel double wall of small end fixture；The connecting rod
Big end fixture includes connecting rod tip pedestal, connecting rod tip fixture stand, big end pin shaft, and connecting rod tip fixture stand is pacified by bolt
On connecting rod tip pedestal, big end pin shaft hole, the setting of big end pin shaft are opened up in the two side walls of connecting rod tip fixture stand
In two big end pin shaft holes.
2. a kind of diesel engine connecting bar fatigue experiment fixture according to claim 1, it is characterized in that: the parallel double wall of small end fixture
Two side walls on the inside of with the junction of small end pin shaft and wrist-pin end of connecting rod the anti-mill of small end is set.
3. a kind of diesel engine connecting bar fatigue experiment fixture according to claim 2, it is characterized in that: the parallel double wall of small end fixture
Two side walls on the inside of the place setting that is in contact with anti-mill slided for adjusting the wrist-pin end of connecting rod of anti-mill, wrist-pin end of connecting rod position
Road.
4. a kind of diesel engine connecting bar fatigue experiment fixture according to claim 1 to 3, it is characterized in that: connecting rod tip bottom
Slideway is set on seat, and the bolt for connecting connecting rod tip fixture stand and connecting rod tip pedestal is located in slideway, and bolt is in slideway
Slidably.
5. a kind of diesel engine connecting bar fatigue experiment fixture according to claim 4, it is characterized in that: slideway is located at connecting rod tip
Convex shoulder of the position setting of base bottom for the nut of fixing bolt.
6. a kind of diesel engine connecting bar fatigue experiment fixture according to claim 1 to 3, it is characterized in that: on small end pin shaft
The small end bolt holes for preventing small end pin shaft from rotating, the big-end bolt hole that setting prevents pin shaft from rotating on big end pin shaft are set；Connecting rod
The setting of big end base bottom prevents the oval horizontal direction groove for hindering connecting rod lower end mobile because of testing stand.
7. a kind of diesel engine connecting bar fatigue experiment fixture according to claim 4, it is characterized in that: being arranged on small end pin shaft anti-
The only small end bolt holes of small end pin shaft rotation, the big-end bolt hole that setting prevents pin shaft from rotating on big end pin shaft；Connecting rod tip bottom
The setting of seat bottom prevents the oval horizontal direction groove for hindering connecting rod lower end mobile because of testing stand.
8. a kind of diesel engine connecting bar fatigue experiment fixture according to claim 5, it is characterized in that: being arranged on small end pin shaft anti-
The only small end bolt holes of small end pin shaft rotation, the big-end bolt hole that setting prevents pin shaft from rotating on big end pin shaft；Connecting rod tip bottom
The setting of seat bottom prevents the oval horizontal direction groove for hindering connecting rod lower end mobile because of testing stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640392.6U CN209589472U (en) | 2019-05-07 | 2019-05-07 | A kind of diesel engine connecting bar fatigue experiment fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640392.6U CN209589472U (en) | 2019-05-07 | 2019-05-07 | A kind of diesel engine connecting bar fatigue experiment fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209589472U true CN209589472U (en) | 2019-11-05 |
Family
ID=68347872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920640392.6U Active CN209589472U (en) | 2019-05-07 | 2019-05-07 | A kind of diesel engine connecting bar fatigue experiment fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209589472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975020A (en) * | 2019-05-07 | 2019-07-05 | 哈尔滨工程大学 | A kind of diesel engine connecting bar fatigue experiment fixture |
-
2019
- 2019-05-07 CN CN201920640392.6U patent/CN209589472U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975020A (en) * | 2019-05-07 | 2019-07-05 | 哈尔滨工程大学 | A kind of diesel engine connecting bar fatigue experiment fixture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201669665U (en) | Chain assembling and disassembling device | |
| CN109975020A (en) | A kind of diesel engine connecting bar fatigue experiment fixture | |
| CN209589472U (en) | A kind of diesel engine connecting bar fatigue experiment fixture | |
| CN103231238A (en) | Crankshaft positioning pin pressing-mounting tool | |
| CN209503412U (en) | A kind of hydraulic cylinder assembling/disassembling machine | |
| CN110842603A (en) | Connecting rod components of a whole that can function independently processing frock | |
| CN211804891U (en) | Connecting rod components of a whole that can function independently processing frock | |
| CN210115837U (en) | Connecting rod end cover composite clamp | |
| CN208223920U (en) | A kind of fatigue crack prefabrication fixture | |
| CN106323976A (en) | Device for online wear detection of self-piercing riveting gun mold | |
| CN208163532U (en) | A kind of fuel engines valve split collets dismantling device | |
| CN210665033U (en) | Spring fatigue testing machine | |
| CN215240590U (en) | Valve seat insert extracting tool | |
| CN205175842U (en) | Valve push rod's bulb shear strength's test fixture | |
| CN203357089U (en) | Clamp for milling combination faces of connecting rods | |
| CN204566036U (en) | A kind of Diesel engine adjustable gas cylinder sleeve extracting tool | |
| CN209272998U (en) | A kind of simple positioning fixture of crankshaft milling Woodruff key slots and keyways | |
| CN208887815U (en) | A kind of connecting rod device for testing tensile force | |
| JP5725853B2 (en) | Connecting rod bearing metal exchanging device and exchanging method thereof, piston support jig | |
| CN106335022A (en) | Dismounting device for valve guide pipe of diesel engine | |
| CN221390870U (en) | Roller box bearing roller puller device of wire rod finishing mill | |
| CN217943226U (en) | Engine spring seat disassembling and assembling mechanism | |
| CN218984666U (en) | Manual cylinder sleeve disassembling tool | |
| CN220554900U (en) | Miniature core-expanding clamping mechanism for cam shaft frame | |
| CN210731771U (en) | Diesel engine shaft-like parts machining anchor clamps |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |