CN202446859U - Connecting structure for fixing dynamic axial compression column - Google Patents
Connecting structure for fixing dynamic axial compression column Download PDFInfo
- Publication number
- CN202446859U CN202446859U CN2012200088470U CN201220008847U CN202446859U CN 202446859 U CN202446859 U CN 202446859U CN 2012200088470 U CN2012200088470 U CN 2012200088470U CN 201220008847 U CN201220008847 U CN 201220008847U CN 202446859 U CN202446859 U CN 202446859U
- Authority
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- China
- Prior art keywords
- axial compression
- compression column
- connecting plate
- flange
- snap ring
- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a connecting structure for fixing a dynamic axial compression column. The connecting structure comprises the axial compression column and a connecting plate, wherein a circular hole for allowing the axial compression column to penetrate through is arranged on the connecting plate; the axial compression column is a unidiameter column body; a first annular groove is arranged on the upper part of the axial compression column; an annular inner clamp ring is clamped and sleeved in the first annular groove; an outer diameter of the inner clamp ring is larger than an outer diameter of the axial compression column; a flange is fixed on the upper side face of the connecting plate through a connecting piece; a second annular groove is formed between the flange and the connecting plate; the inner clamp ring is simultaneously clamped in the second annular groove; clearances with a numerical value being D are respectively arranged on the side directions and above the inner clamp ring and the flange; a clearance with a numerical value being E is arranged between the axial compression column and the flange; and a clearance with a numerical value being F is arranged between the axial compression column and the circular hole of the connecting plate. The connecting structure solves the problem of coaxial error in installation of an oil cylinder and the compression column, and the dynamic performance is better.
Description
Technical field
The utility model relates to the structure that a kind of dynamic axial compression column with column and connecting plate effectively are connected.
Background technology
Dynamic axial compression column (DAC) is the nucleus equipment of highly effective liquid phase chromatographic system; The leading indicator of weighing the post effect is a theoretical cam curve; For given filler, post is imitated fill method and the column length that mainly depends on pillar, and this part has directly determined the compartment analysis effect of pillar at physical layer.
Dynamic axial compression column (DAC) mainly is made up of the pressurization oil cylinder and the pillar that are fixed on the connecting plate, and pillar is equipped with filler, and to the pressurization of the filler in the pillar, filler is compacted under pressure oil cylinder through piston.Dynamic axial compression column (DAC) mainly is filling compaction, and keeps certain pressure constant.Realize that this process will satisfy two conditions: (1), oil cylinder will provide pressure stable, and this can solve through the design of pressurizing point; (2) on frame for movement, to guarantee the axiality of pillar and oil cylinder, guarantee to seal and reduce the wearing and tearing of piston and pillar, also will make the entering of the piston easy for installation of pillar.
Pass through force analysis; When the pillar flange is installed in below the connecting plate 3; Connecting bolt 5 axial suffered pulling force are piston adds pillar and flange self to the pressure of pillar gravity; And the pillar flange is when being installed in above the connecting plate 3, and bolt 5 axial suffered pulling force only are the pretightning force of self, and stress is following better than being installed in.So the pillar flange will be installed in above the connecting plate, but the pillar flange diameter greater than the pillar diameter, this has just brought inconvenience to installation.The jockey of a kind of interior snap ring of exploitation is attempted in this design, promptly can solve being connected of pillar and connecting plate, can compensate the coaxiality error in the installation again, and this also helps the movable sealing effect of pillar and oil cylinder.
The utility model content
The technical assignment of the utility model is the syndeton that a kind of fixedly dynamic axial compression column is provided to above-mentioned deficiency of the prior art, and the connectivity problem that can solve dynamic axial compression column and connecting plate can compensate the axiality alignment error of dynamic axial compression column and oil cylinder again.
The technical scheme that its technical problem of the utility model solution is taked is: a kind of syndeton of fixedly dynamic axial compression column, comprise axial compression column and connecting plate, and there is one to hold the circular hole that axial compression column passes on the said connecting plate; It is characterized in that; Said axial compression column is isodiametric cylinder, and is provided with one first annular recess on the top of said axial compression column, and card is established and is nested with snap ring in the ring-type in said first annular recess; The snap ring external diameter is greater than the axial compression column external diameter in said; One flange is fixed on the connecting plate upper side through connector, and has shoulder hole in the said flange, forms second annular recess between said flange and the connecting plate; Snap ring is fastened in said second annular recess simultaneously in said; And in said the side direction of snap ring and flange with above have the gap that numerical value is D respectively, between said axial compression column and flange, have the gap that numerical value is E, between said axial compression column and connecting plate circular hole, have the gap that numerical value is F.
Snap ring is made up of two semicircular ring in said, and two semicircular ring are shaped by a full circle ring warp cutting, with working good of axial compression column, are used for the location, install.
Said D equates with E, and said D is less than F.
Described D equals 1 millimeter, and described E equals 1 millimeter, and described F equals 1.2 millimeters.
The beneficial effect of the utility model is: interior snap ring can be fixed on axial compression column on the connecting plate, makes things convenient for the entering and the loading and unloading filler of piston, and overall structure helps charge.Because between axial compression column and connecting plate and the flange, leave certain clearance between interior snap ring and the flange, so axial compression column can be movable within the specific limits, solved the coaxiality error problem that oil cylinder and compression post are installed, dynamic property is better.
Description of drawings
Fig. 1 is the vertical view of the utility model;
Fig. 2 is the A--A cutaway view among Fig. 1;
Among the figure: 1 axial compression column, 11 first annular recess, 2 connecting plates, 3 flanges, 31 second annular recess, 4 interior snap rings, 5 bolts.
The specific embodiment
Like Fig. 1, shown in Figure 2, a kind of syndeton of fixedly dynamic axial compression column comprises axial compression column 1, connecting plate 2, flange 3 and interior snap ring 4.
Connecting plate 2 is block plates, is used for being connected with frame, is the mounting platform of miscellaneous part.On connecting plate 2, have one to hold the circular hole that axial compression column passes, between said axial compression column 1 and connecting plate circular hole, having numerical value F is 1.2 mm clearance.This axial compression column 1 is isodiametric cylinder, and the upper end of axial compression column is a charging door, and the lower end seals.Be provided with one first annular recess 11 on the top of axial compression column 1; Card is established and is nested with snap ring 4 in the ring-type in first annular recess 11; Interior snap ring 4 external diameters are greater than axial compression column 1 external diameter, and interior snap ring is made up of the butt joint of two semicircular ring, and two semicircular ring are shaped by a full circle ring warp cutting; Be convenient to install additional and assemble the cooperation of the snap ring and first annular recess in final the realization like this.
Flange 3 is fixed on connecting plate 2 upper sides through six bolt 5 connectors, and has shoulder hole in the said flange 3, and the aperture of flange and axial compression column endoporus sizableness hold piston and pass through.Flange 3 is fixed on the connecting plate 2; So form second annular recess 31 between flange and the connecting plate, interior snap ring 4 is fastened in said second annular recess simultaneously, and said in snap ring 4 and flange side direction and above to have numerical value D respectively be 1 mm clearance; Between said axial compression column and flange, having numerical value E is 1 mm clearance; So, realize that finally a kind of function is exactly, axial compression column has level of freedom with respect to connecting plate on three dimensions; Can realize self-regulating function, guarantee the rigidity that connects simultaneously.
So just can flange, axial compression column, interior snap ring be fixed on the connecting plate together, realize the connection and the aligning function of axial compression column.
Except that the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (4)
1. the fixing syndeton of dynamic axial compression column comprises axial compression column and connecting plate, has one to hold the circular hole that axial compression column passes on the said connecting plate; It is characterized in that; Said axial compression column is isodiametric cylinder, and is provided with one first annular recess on the top of said axial compression column, and card is established and is nested with snap ring in the ring-type in said first annular recess; The snap ring external diameter is greater than the axial compression column external diameter in said; One flange is fixed on the connecting plate upper side through connector, and has shoulder hole in the said flange, forms second annular recess between said flange and the connecting plate; Snap ring is fastened in said second annular recess simultaneously in said; And in said the side direction of snap ring and flange with above have the gap that numerical value is D respectively, between said axial compression column and flange, have the gap that numerical value is E, between said axial compression column and connecting plate circular hole, have the gap that numerical value is F.
2. the syndeton of a kind of fixedly dynamic axial compression column according to claim 1 is characterized in that, said interior snap ring is made up of two semicircular ring.
3. the syndeton of a kind of fixedly dynamic axial compression column according to claim 1 and 2 is characterized in that, said D equates with E, and said D is less than F.
4. the syndeton of a kind of fixedly dynamic axial compression column according to claim 3 is characterized in that, described D equals 1 millimeter, and described E equals 1 millimeter, and described F equals 1.2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200088470U CN202446859U (en) | 2012-01-10 | 2012-01-10 | Connecting structure for fixing dynamic axial compression column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200088470U CN202446859U (en) | 2012-01-10 | 2012-01-10 | Connecting structure for fixing dynamic axial compression column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202446859U true CN202446859U (en) | 2012-09-26 |
Family
ID=46862754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200088470U Expired - Fee Related CN202446859U (en) | 2012-01-10 | 2012-01-10 | Connecting structure for fixing dynamic axial compression column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202446859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691149A (en) * | 2014-01-07 | 2014-04-02 | 利穗科技(苏州)有限公司 | Novel precisely-controlled DAC (Dynamic Axial Compression) chromatographic column system |
-
2012
- 2012-01-10 CN CN2012200088470U patent/CN202446859U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691149A (en) * | 2014-01-07 | 2014-04-02 | 利穗科技(苏州)有限公司 | Novel precisely-controlled DAC (Dynamic Axial Compression) chromatographic column system |
| CN103691149B (en) * | 2014-01-07 | 2015-05-13 | 利穗科技(苏州)有限公司 | Novel precisely-controlled DAC (Dynamic Axial Compression) chromatographic column 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: 20120926 Termination date: 20180110 |