CN202021450U - Liquid nitrogen cold-shrinkage device for work pieces - Google Patents
Liquid nitrogen cold-shrinkage device for work pieces Download PDFInfo
- Publication number
- CN202021450U CN202021450U CN2011201332985U CN201120133298U CN202021450U CN 202021450 U CN202021450 U CN 202021450U CN 2011201332985 U CN2011201332985 U CN 2011201332985U CN 201120133298 U CN201120133298 U CN 201120133298U CN 202021450 U CN202021450 U CN 202021450U
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- inner tank
- inner bag
- shrinkage device
- top cover
- 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 - Lifetime
Links
Images
Landscapes
- Packages (AREA)
Abstract
The utility model discloses a liquid nitrogen cold-shrinkage device for work pieces, which comprises an outer housing, an inner tank and a top cover, wherein, the top cover is arranged on an upper opening of the inner tank; the inner tank adopts an up-down two-stage cylinder-shaped structure; the diameter of the upper cylinder of the inner tank is smaller than that of the lower cylinder of the inner tank; the inner tank is sleeved in and connected to the outer housing; a closed jacket is formed between the inner tank and the outer housing; thermal insulation materials are filled into the jacket; inner tank cushion blocks are arranged at the bottom of the jacket; a liquid nitrogen inlet is formed at the lower part of the outer housing; and a nitrogen discharge pipe is arranged at the top of the outer housing. The liquid nitrogen cold-shrinkage device can be conveniently applied to assembly situations needing interference fit of inner casings and outer casings, causes no damage to the work pieces, achieves a good assembly effect, has high efficiency, and avoids many disadvantages of a heating assembly method, which are caused by the heating of the work pieces.
Description
Technical field
The utility model relates to fitting device, specifically is a kind of workpiece liquid nitrogen shrinkage device.
Background technology
In industrial products are produced, the assembling demand of cover and overcoat interference fit in often having, as in hydraulic breaking hammer, drill steel front and back ends sliding sleeve promptly belongs to this kind situation with cooperating of hydraulic breaking hammer housing.Generally assembly method is, housing is made it to expand through local baking, then sliding sleeve is packed into, is cooling off the interference fit that housing and sliding sleeve are realized in the back naturally.But there is following defective in this method: the one, through the baking of housing part being caused easily the surface lacquer surface damage of housing; The 2nd, may cause selective hardening and influence housing hardness; The 3rd, because it is long to preheat assembly period.Therefore adopting in the shrinkage cover to carry out that interference fit installs is a kind of assembly method preferably, is suitable for the on-the-spot workpiece shrinkage device that uses whenever and wherever possible but still lack at present.
The utility model content
In order to solve the inside and outside sleeve workpiece that needs interference fit lacks suitable frock in the shrinkage treatment process technical problem, the utility model provides a kind of workpiece liquid nitrogen shrinkage device, can internally overlap shrinkage fast, to satisfy the field demand of inside and outside sleeve workpiece shrinkage assembling.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of workpiece liquid nitrogen shrinkage device, comprise shell body, inner bag and top cover, described top cover is arranged on the suitable for reading of described inner bag, described inner bag is cylindrical to be socketed within the described shell body, between described inner bag and shell body, form closed jacket, be provided with the inner bag cushion block in the bottom of described chuck, be provided with the liquid nitrogen inlet port, be provided with the nitrogen discharge pipe at the top of described shell body in the bottom of described shell body.Be filled with insulation material in described chuck, described insulation material can be a polyurethane foam etc.
The periphery of described top cover is provided with plural top cover buckle, is convenient to the top cover quickly opening and closing.
Described inner bag adopts stainless steel material, and shell body is that general steel plate is made.
Described inner bag is dual stage cylindrical structure up and down, and its top cylinder diameter is less than bottom drum diameter.
The utility model is when concrete operations, open top cover earlier, will treat that the shrinkage workpiece puts into inner bag, open liquid nitrogen inlet port valve then and charge into liquid nitrogen, open the top nitrogen delivery pipe simultaneously and discharge nitrogen, can guarantee like this that the unlikely pressure-bearing of inner bag is too high and cause danger to presumptive area.Through after the scheduled time, temperature can reach subzero 100 ° below the C in the inner bag, and workpiece is effectively shunk, and close liquid nitrogen inlet port valve this moment, and the taking-up workpiece of uncapping is inserted in shell immediately with workpiece, after waiting to change normal temperature over to, has just reached the purpose of interference fit.
The beneficial effects of the utility model are: adopt this device to avoid workpiece heating has been avoided can cooperating liquid nitrogen container to carry out workpiece at any time at the scene and assembling because that heating brings is many unfavorable thereupon, to the workpiece not damaged, assemble effective, efficient is high.
Description of drawings
Fig. 1 is the profile schematic diagram of a kind of workpiece liquid nitrogen of the utility model shrinkage device;
Fig. 2 is the emerging vertical view of this practicality;
Fig. 3 is that the A-A of Fig. 2 is to cutaway view.
In Fig. 1-Fig. 3,1, shell body, 2, chuck, 3, top cover, 4, buckle, 5, the nitrogen discharge pipe, 6, inner bag, 7, the inner bag cushion block, 8, the liquid nitrogen inlet port.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.
As shown in Figure 1-Figure 3, a kind of workpiece liquid nitrogen shrinkage device, comprise shell body 1, inner bag 6 and top cover 3, top cover 3 is fastened on the suitable for reading of inner bag 6, inner bag 6 cylindrical being socketed within the shell body 1 form closed jacket 2 between described inner bag 6 and shell body 1, be provided with inner bag cushion block 7 in the bottom of described chuck 2, be provided with liquid nitrogen inlet port 8 in the bottom of described shell body 1, be provided with nitrogen discharge pipe 5 at the top of described shell body 1.Be filled with insulation material in described chuck 2, described insulation material is a polyurethane foam etc.
The periphery of described top cover 3 is provided with plural top cover buckle 4, is convenient to top cover 3 quickly opening and closings, and described top cover has sealing ring.
Described inner bag 6 adopts stainless steel material, and shell body 1 is that general steel plate is made.
Claims (6)
1. workpiece liquid nitrogen shrinkage device, comprise shell body, inner bag and top cover, described top cover is arranged on the suitable for reading of described inner bag, it is characterized in that: described inner bag is cylindrical to be socketed within the described shell body, between described inner bag and shell body, form closed jacket, be provided with the inner bag cushion block in the bottom of described chuck, be provided with the liquid nitrogen inlet port, be provided with the nitrogen discharge pipe at the top of described shell body in the bottom of described shell body.
2. workpiece liquid nitrogen shrinkage device according to claim 1 is characterized in that: be filled with insulation material in the described chuck.
3. workpiece liquid nitrogen shrinkage device according to claim 2, it is characterized in that: described insulation material is a polyurethane foam.
4. workpiece liquid nitrogen shrinkage device according to claim 1, it is characterized in that: the periphery of described top cover is provided with plural top cover buckle.
5. workpiece liquid nitrogen shrinkage device according to claim 1, it is characterized in that: described inner bag is a stainless steel inner container.
6. according to each described workpiece liquid nitrogen shrinkage device of claim 1-5, it is characterized in that: described inner bag is dual stage cylindrical structure up and down, and its top cylinder diameter is less than bottom drum diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201332985U CN202021450U (en) | 2011-04-29 | 2011-04-29 | Liquid nitrogen cold-shrinkage device for work pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201332985U CN202021450U (en) | 2011-04-29 | 2011-04-29 | Liquid nitrogen cold-shrinkage device for work pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202021450U true CN202021450U (en) | 2011-11-02 |
Family
ID=44846418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201332985U Expired - Lifetime CN202021450U (en) | 2011-04-29 | 2011-04-29 | Liquid nitrogen cold-shrinkage device for work pieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202021450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914148A (en) * | 2017-12-07 | 2018-04-17 | 广州文冲船厂有限责任公司 | A kind of frock for bearing liquid nitrogen frozen |
-
2011
- 2011-04-29 CN CN2011201332985U patent/CN202021450U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914148A (en) * | 2017-12-07 | 2018-04-17 | 广州文冲船厂有限责任公司 | A kind of frock for bearing liquid nitrogen frozen |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202021450U (en) | Liquid nitrogen cold-shrinkage device for work pieces | |
| CN202119272U (en) | Novel metallurgy slag waste heat recycling device | |
| CN203082535U (en) | Cylinder valve protection cover device of repeatedly filled welding steel cylinder | |
| CN102252900B (en) | Inert gas protection method and apparatus for self-heating high temperature compression quenching experiment | |
| CN202018402U (en) | Inert gas protection device for self-heating high-temperature compression quenching experiments | |
| CN202451820U (en) | Split hydraulic test sealing device | |
| CN204381771U (en) | A kind of device utilizing dry ice Cold assembled bushing | |
| CN201476310U (en) | Discharge outlet plug for electric water heater | |
| CN202122956U (en) | Cement outer wall reaction kettle | |
| CN204264610U (en) | A kind of Separation of Solid and Liquid transporter | |
| CN205226355U (en) | Guide plate type full clamp sleeve | |
| CN204688632U (en) | The charging basket of bottom self-emptying | |
| CN202036005U (en) | Rapid pressurizing safety valve | |
| CN204061864U (en) | A kind of pressurized container lid-open device | |
| CN201954807U (en) | Inner container split enameled jacket solar water tank | |
| CN202144506U (en) | Device for automatically cooling steel belt | |
| CN203216123U (en) | Pressure-bearing plastic inner container and solar water heater using same | |
| CN201176440Y (en) | Thermal insulation methane tank | |
| CN203609282U (en) | Hot water tank of water dispenser | |
| CN202927476U (en) | Low-temperature container pipeline hanging device | |
| CN203458228U (en) | Return water storage tank of sterilizing and quality-guaranteeing steamer | |
| CN202826314U (en) | Press cooling device | |
| CN204489445U (en) | A kind of vertical-shaped single hole valve liquid storage bottle | |
| CN210593505U (en) | Cutting fluid storage device | |
| CN202107210U (en) | Container with clamping sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121026 Address after: 264006 the Qinhuai River Road, Yantai economic and Technological Development Zone, Shandong 189, China Patentee after: Yantai Eddie Precision Machinery Co., Ltd. Address before: 264006 the Qinhuai River Road, Yantai economic and Technological Development Zone, Shandong 189, China Patentee before: Yantai Eddie Precision Machinery Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |