CN212563509U - Automatic clamp of common rail fuel injector performance test bed - Google Patents
Automatic clamp of common rail fuel injector performance test bed Download PDFInfo
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- CN212563509U CN212563509U CN202020515319.9U CN202020515319U CN212563509U CN 212563509 U CN212563509 U CN 212563509U CN 202020515319 U CN202020515319 U CN 202020515319U CN 212563509 U CN212563509 U CN 212563509U
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- common rail
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Abstract
An automatic clamp for a common rail fuel injector performance test bed comprises a clamping block, an upper positioning block, a lower positioning block, a positioning shaft sleeve and a lower fixing plate. The upper positioning block and the lower positioning block are detachably arranged on the clamping block. The positioning shaft sleeve is detachably arranged on the lower fixing plate. The lower fixing plate is provided with a fixed round seat, and the fixed round seat is provided with a positioning hole. The positioning shaft sleeve is provided with a boss, and the boss is provided with a strip-shaped groove. The central position of the positioning shaft sleeve is provided with a through hole. The upper positioning block is provided with a clamping table, and the inner side of the clamping table is provided with an upper fixing groove. And a lower fixing groove is formed in the inner side of the lower positioning block. The utility model has the advantages that: the oil nozzle can be clamped and positioned quickly, and the center positioning is accurate; can realize fast to changing the location fixed block, improve work efficiency.
Description
Technical Field
The utility model belongs to the technical field of sprayer performance test equipment, concretely relates to common rail fuel injector performance test platform automatic clamp.
Background
The adjustment of the injection time and the injection quantity is carried out by an electronically triggered injector. These injectors replace the injector-cap assembly (injector and injector cap). The common rail injector can be installed on the top of the cylinder of an existing direct injection diesel engine without the need for engine modifications. The oil injector can be split into a series of functional components, namely a hole type oil injection nozzle, a hydraulic servo system and an electromagnetic valve. The common rail fuel injector performance test bed is a measuring device for determining whether the fuel injector performance is qualified, the automatic clamp is a clamping device for ensuring the test state of the fuel injector, the requirements on the test clamp are higher and higher along with the continuous improvement of the injection pressure of the fuel injector, and the common rail fuel injector performance test bed is particularly critical to compression and sealing. In the prior art, a clamp is generally manually clamped or semi-automatically clamped, wherein the manual clamping refers to manually placing an oil injector to be tested into a fixed clamp, and enabling an oil return hole of the oil injector to be close to a hole of a return oil collecting hose or an oil return device with a sealing ring, and the oil injector is pressed tightly after being placed by depending on the force of an oil inlet rod on the oil inlet hole; after the test is finished, the oil injector can be taken out only by withdrawing the oil inlet rod; the working mode of the oil inlet rod is similar to that of a feed screw of an old machine tool, the oil inlet rod is linearly moved by manually rotating a head wheel and finally pushed tightly, and the wiring of the electromagnet is realized by manually screwing a nut for wiring or clamping the wiring terminal of the electromagnet by using a wiring clamp; the device is too backward, and can not adapt to the continuously updated fuel injector test clamping in both efficiency and reliability; and also cannot meet the requirements in terms of safety.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model aims at providing a common rail fuel injector performance test platform automatic clamp, this anchor clamps simple structure, safe and reliable.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an automatic clamp for a common rail fuel injector performance test bed comprises a clamping block, an upper positioning block, a lower positioning block, a positioning shaft sleeve and a lower fixing plate.
The upper positioning block and the lower positioning block are detachably arranged on the clamping block.
The positioning shaft sleeve is detachably arranged on the lower fixing plate.
The lower fixing plate is provided with a fixed round seat, and the fixed round seat is provided with a positioning hole.
The positioning shaft sleeve is provided with a boss, and the boss is provided with a strip-shaped groove.
The central position of the positioning shaft sleeve is provided with a through hole.
The upper positioning block is provided with a clamping table, and the inner side of the clamping table is provided with an upper fixing groove.
And a lower fixing groove is formed in the inner side of the lower positioning block.
Furthermore, a plurality of positioning grooves are formed in the clamping block.
Furthermore, a retreating through hole is formed in the clamping block. The retreating through holes are positioned at two sides of the positioning groove.
Furthermore, be provided with half snap ring on going up the locating piece, the size and the thickness of half snap ring are unanimous with the size and the width of constant head tank, it sets up in the constant head tank of clamp splice through half snap ring detachable to go up the locating piece.
Furthermore, the two sides of the semi-clamping ring are provided with a first arc-shaped retreating groove, and after the semi-clamping ring is installed, the circle center of the first retreating groove is consistent with that of the corresponding retreating through hole.
Furthermore, two sides of the lower positioning block are provided with circular arc-shaped retreat grooves II, and after the lower positioning block is installed, the circle centers of the retreat grooves II are consistent with the circle centers of the corresponding retreat through holes.
Furthermore, a sealing ring groove is formed in the outer side of the boss, and a rubber sealing ring is arranged in the sealing ring groove.
The utility model has the advantages that: the oil nozzle can be clamped and positioned quickly, and the center positioning is accurate; can realize fast to changing the location fixed block, improve work efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention showing the state of holding the fuel injector;
FIG. 3 is a schematic view of a clamping block structure;
FIG. 4 is a schematic structural diagram of an upper positioning block;
FIG. 5 is a schematic view of a lower positioning block;
FIG. 6 is a schematic view of a positioning sleeve;
fig. 7 is a schematic diagram of a lower fixing plate structure.
Reference numerals: 1-clamping block, 2-upper positioning block, 3-lower positioning block, 4-positioning shaft sleeve, 5-lower fixing plate, 6-oil injector, 7-retreating through hole, 8-positioning groove, 9-retreating groove I, 10-semi-snap ring, 11-clamping table, 12-upper fixing groove, 13-retreating groove II, 14-lower fixing groove, 15-boss, 16-sealing ring groove, 17-through hole, 18-strip groove, 19-fixing round seat and 20-positioning hole.
Detailed Description
For the convenience of understanding, the technical solution of the present invention is further described in detail below by way of embodiments with reference to the accompanying drawings:
as shown in fig. 1-7, an automatic fixture for a common rail injector performance test bed comprises a clamping block 1, an upper positioning block 2, a lower positioning block 3, a positioning shaft sleeve 4 and a lower fixing plate 5.
The upper positioning block 2 and the lower positioning block 3 are detachably arranged on the clamping block 1.
The positioning shaft sleeve 4 is detachably arranged on the lower fixing plate 5.
The lower fixing plate 5 is provided with a fixing round seat 19, and the fixing round seat 19 is provided with a positioning hole 20.
The positioning shaft sleeve 4 is provided with a boss 15, and the boss 15 is provided with a strip-shaped groove 18.
A sealing ring groove 16 is arranged on the boss 15, and a rubber sealing ring is arranged in the sealing ring groove 16.
The positioning sleeve 4 is provided with a through hole 17 at the center thereof.
The clamping block 1 is provided with a plurality of positioning grooves 8. The clamping block 1 is provided with a back-off through hole 7 at two sides of the positioning groove 8.
Go up and be provided with half snap ring 10 on the locating piece 2, the size and the thickness of half snap ring 10 are unanimous with the size and the width of constant head tank 8, go up locating piece 2 through half snap ring 10 detachable setting in the constant head tank 8 of clamp splice 1.
Two sides of the semi-clamping ring 10 are provided with a first retreating groove 9, and the circle center of the first retreating groove 9 is consistent with the two retreating through holes 7.
The upper positioning block 2 is provided with a clamping table 11, the inner side of the clamping table 11 is provided with an upper fixing groove 12, and the size and shape of the upper fixing groove 12 are consistent with the clamping and fixing position on the fuel injector 6.
The inner side of the lower positioning block 3 is provided with a lower fixing groove 14, and the size and shape of the lower fixing groove 14 are consistent with the size and shape of the flange shaft at the lower part of the fuel injector 6. The lower part of the fuel injector 6 can be tightly clamped in the lower fixing groove 14.
Two sides of the lower positioning block 3 are provided with two retreating grooves 13, and the circle centers of the two retreating grooves 13 are consistent with the circle centers of the two retreating through holes 7.
When in use, the upper positioning block 2 is fixed in the positioning groove 8 at the upper end of the clamping block 1. The lower positioning block 3 is fitted into a positioning groove 8 at an appropriate position according to the condition of the thin shaft portion of the injector 6. The lower fixing plate 5 is placed below the clamping block 1, so that the upper positioning block 2 and the lower positioning block 3 are coaxial with the positioning shaft sleeve 4. And then the oil injector 6 can be quickly positioned and fixed through the upper positioning block 2 and the lower positioning block 3, and the performance test of the common rail oil injector can be carried out. When different fuel injectors are required to be subjected to performance tests, the upper positioning block 2 and the lower positioning block 3 can be quickly detached by inserting the long pair of pins into the retreat through holes, and the positioning blocks are updated to be newly tested.
The above embodiments are merely illustrative or explanatory of the technical solution of the present invention, and should not be construed as limiting the technical solution of the present invention, and it is obvious that those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. The present invention also includes such modifications and variations provided they come within the scope of the appended claims and their equivalents.
Claims (7)
1. The utility model provides a common rail injector performance test bench automatic fixture, includes clamp splice, last locating piece, lower locating piece, location axle sleeve and bottom plate, its characterized in that, go up locating piece and locating piece detachable down locate on the clamp splice, location axle sleeve detachable locates on the bottom plate, be provided with fixed round seat on the bottom plate, be provided with the locating hole on the fixed round seat, be provided with the boss on the location axle sleeve, be provided with the bar groove on the boss, the central point of location axle sleeve puts and is provided with the through-hole, upward be provided with the ka tai on the locating piece, card platform inboard is provided with the fixed slot, the locating piece inboard is provided with down the fixed slot down.
2. The automatic clamp for the common rail injector performance test bed according to claim 1, characterized in that: the clamping block is provided with a plurality of positioning grooves.
3. The automatic clamp for the common rail injector performance test bed according to claim 2, characterized in that: the clamping block is provided with retreating through holes which are positioned at two sides of the positioning groove.
4. The automatic clamp for the common rail injector performance test bed according to claim 3, characterized in that: and a half clamping ring is arranged on the upper positioning block, and the size and the thickness of the half clamping ring are consistent with those of the positioning groove.
5. The automatic clamp for the common rail injector performance test bed according to claim 4, characterized in that: and two sides of the semi-clamping ring are provided with a first arc-shaped receding groove.
6. The automatic clamp for the common rail injector performance test bed according to claim 5, characterized in that: and two sides of the lower positioning block are provided with a circular arc-shaped retreat slot II.
7. The automatic clamp for the common rail injector performance test bed according to claim 6, characterized in that: a sealing ring groove is formed in the outer side of the boss, and a rubber sealing ring is arranged in the sealing ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020515319.9U CN212563509U (en) | 2020-04-09 | 2020-04-09 | Automatic clamp of common rail fuel injector performance test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020515319.9U CN212563509U (en) | 2020-04-09 | 2020-04-09 | Automatic clamp of common rail fuel injector performance test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212563509U true CN212563509U (en) | 2021-02-19 |
Family
ID=74617358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020515319.9U Active CN212563509U (en) | 2020-04-09 | 2020-04-09 | Automatic clamp of common rail fuel injector performance test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212563509U (en) |
-
2020
- 2020-04-09 CN CN202020515319.9U patent/CN212563509U/en active Active
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