CN210980417U - Novel column spring supporting structure - Google Patents
Novel column spring supporting structure Download PDFInfo
- Publication number
- CN210980417U CN210980417U CN201920793250.3U CN201920793250U CN210980417U CN 210980417 U CN210980417 U CN 210980417U CN 201920793250 U CN201920793250 U CN 201920793250U CN 210980417 U CN210980417 U CN 210980417U
- Authority
- CN
- China
- Prior art keywords
- section
- spiral
- column spring
- circumference
- cross
- 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
Images
Landscapes
- Springs (AREA)
Abstract
The utility model relates to a novel column spring supporting structure, which comprises a hollow cylindrical barrel, wherein at least two spiral grooves which are identical in line type and distributed in a staggered manner are arranged on the surface of the middle section of the cylindrical barrel, the head end of each spiral groove is positioned on the circumference of the cross section of one end of the middle section of the cylindrical barrel, and the tail end of each spiral groove is positioned on the circumference of the cross section of the other end of the middle section of the cylindrical barrel; the utility model discloses can satisfy the requirement of piston stroke and radial stiffness in the refrigerator simultaneously.
Description
Technical Field
The utility model relates to a spring technical field, especially a novel column spring bearing structure.
Background
At present, in a stirling cryocooler for providing precooling in the field of infrared detectors, the requirement on the vibration output of the cryocooler is high, an opposed linear compressor is generally adopted to drive an expander structure, a compression piston in the linear compressor and a push piston in the expander both perform reciprocating motion, the compression piston and the push piston need to be supported by a spring, and the spring in the structure has two functions: firstly, a specific axial stiffness is adopted to provide a piston working frequency close to the natural frequency of a system for a vibration system, so that the vibration of the piston approaches resonance, and the working efficiency is improved; and secondly, the spring is used for supporting the piston to do reciprocating motion, enough radial rigidity needs to be provided, the gap between the piston and the cylinder is ensured, the piston abrasion is reduced, and the service life of the friction pair is prolonged.
In the existing column spring supporting structure, the piston stroke of the refrigerator adopting the common cylindrical spiral compression spring supporting structure is large, but the radial rigidity is insufficient, so that the frictional resistance between the piston and the cylinder is large, the service life of the refrigerator is short, and the refrigerator adopting the diaphragm spring supporting structure has large radial rigidity and small frictional resistance when in work, but the piston stroke is small, the pressure ratio of the compressor is low, so that the diaphragm spring supporting structure is not suitable for occasions with large stroke and high pressure ratio.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel column spring bearing structure satisfies piston stroke and radial stiffness's requirement in the refrigerator simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a novel column spring bearing structure, includes hollow cylinder barrel, encircles the middle section surface of cylinder barrel is equipped with the helicla flute that two at least line types are the same and crisscross distribution, each the head end of helicla flute all be located the cross section circumference of cylinder barrel middle section one end, each the end of helicla flute all be located the cross section circumference of the cylinder barrel middle section other end.
In a preferred embodiment, the line types of the two groove edges of the spiral groove are two parallel cylindrical spiral lines, and the line types of the head end and the tail end of the spiral groove are both arc transition lines.
As a preferred embodiment, the inner parts of the two ends of the cylindrical barrel are respectively provided with internal threads with the same rotation direction; the internal thread starts from the outer end face of the cylindrical barrel and ends at the adjacent side of the end face of the middle section of the cylindrical barrel.
In a preferred embodiment, the number of the spiral grooves is two, and the head ends and the tail ends of the two spiral grooves are respectively located in the same radial direction of the circumference of the cross section.
In a preferred embodiment, the number of the spiral grooves is three, and the head ends and the tail ends of the three spiral grooves respectively trisect the circumference of the cross section where the three spiral grooves are located.
The utility model has the advantages as follows: the utility model takes a hollow cylindrical barrel body as a column spring body (the material is the same as that of a common cylindrical helical compression spring), at least two helical grooves with the same line type and staggered distribution are arranged at the middle section of the column spring body, so that two or more parallel spiral compression spring structures which are connected with the left end and the right end of the column spring body are formed at the middle section of the column spring body, the spring structure is not different from the common cylindrical helical compression spring in the stroke, and because the spring structure is integrally formed on the cylindrical barrel body, meanwhile, the spring structure is provided with two or more than two connecting points between the left end and the right end of the cylindrical barrel, each connecting point is positioned on the circumference of the same cross section (the head end and the tail end of each spiral groove are positioned on the circumference of the same cross section), and the radial rigidity of the column spring can be improved by multiple times compared with that of a common cylindrical spiral compression spring, so that the requirements on the stroke and the rigidity of the column spring supporting structure in a refrigerator can be met simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of the first embodiment;
FIG. 2 is a schematic partial cross-sectional view of the first embodiment;
FIG. 3 is a schematic structural view of the second embodiment;
fig. 4 is a schematic view of the installation position of the present invention in the compressor;
fig. 5 is a schematic view of the installation position of the present invention in the expander;
wherein: 1-cylindrical barrel, 101 a-spiral groove I, 101 b-spiral groove II, 101 c-spiral groove III, 102-left groove edge, 103-right groove edge, 104-head end, 2-middle section, 3-left section, 301-left internal thread, 4-right section, 401-right internal thread and 5-column spring supporting structure.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
the following examples and drawings are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Example one
The novel column spring supporting structure described with reference to fig. 1 and 2 comprises a hollow cylindrical barrel 1, wherein the material of the cylindrical barrel 1 is the same as that of a common cylindrical helical compression spring, such as carbon steel or alloy steel.
The surface of the middle section 2 surrounding the cylindrical barrel 1 is provided with three spiral grooves, namely a first spiral groove 101a, a second spiral groove 101b and a spiral groove 101c, and the first spiral groove 101a, the second spiral groove 101b and the spiral groove 101c are identical in line type and distributed in a staggered mode.
The head ends of the first spiral groove 101a, the second spiral groove 101b and the spiral groove 101c are all located on the circumference of the cross section of one end of the middle section 2 of the cylindrical barrel, and the tail ends of the first spiral groove 101a, the second spiral groove 101b and the spiral groove 101c are all located on the circumference of the cross section of the other end of the middle section 2 of the cylindrical barrel.
The first spiral groove 101a, the second spiral groove 101b and the head end of the spiral groove 101c are equally divided into three equal parts of the circumference of the cross section, and the tail end of the same spiral groove 101a, the same spiral groove 101b and the same spiral groove 101c are also equally divided into three equal parts of the circumference of the cross section.
Therefore, a structure similar to three parallel compression spiral springs is formed between the left section 2 and the right section 3 of the cylindrical barrel 1, compared with a common spiral compression spring with the same size, the stroke is similar, and the radial stiffness is improved to be at least 3 times of the structural stiffness of a single compression spiral spring.
In this embodiment, the line types of the left groove edge 102 and the right groove edge 103 of the three spiral grooves are two parallel cylindrical spiral lines, and the line type of the head end 104 of each spiral groove is an arc transition line (i.e., the arc is connected with the tangent point of the left groove edge 102 and the right groove edge 103 respectively).
In order to facilitate the assembly of the column spring support structure, in this embodiment, a left internal thread 201 is provided in the left section 2 of the cylindrical barrel 1, and a right internal thread 301 is provided in the right section 3; the left internal thread 201 and the right internal thread 301 both start from the outer end face of the cylindrical barrel body 1 and end at the adjacent side of the end face of the middle section 2 of the cylindrical barrel body, and the thread turning directions of the left internal thread 201 and the right internal thread 301 are consistent.
The structure can refer to fig. 4 and 5 for the assembly mode of the compressor and the expander in the refrigerating machine, as shown in fig. 4, in the compressor, a left internal thread of a column spring support structure 5 is in threaded connection with a rotor assembly in the compressor, and a right internal thread is in threaded connection with a spring base; as shown in fig. 5, in the expander, the left internal thread of the column spring support structure 5 is screwed to the spring base in the expander, and the right internal thread is screwed to the pushing piston.
Example two
The structure of this embodiment is basically the same as that of the first embodiment, except that the number of the spiral grooves is changed into two, and the head ends and the tail ends of the two spiral grooves are respectively positioned in the same radial direction of the circumference of the cross section where the spiral grooves are positioned. Compared with the common spiral compression spring with the same size, the novel column spring structure has the advantages that the stroke is close, and the radial rigidity is improved to be more than 2 times of the rigidity of a single common spring structure.
Claims (5)
1. The utility model provides a novel column spring bearing structure which characterized in that: including hollow cylinder barrel, encircle the middle section surface of cylinder barrel is equipped with the helicla flute that two at least line types are the same and crisscross distribution, each the head end of helicla flute all be located the cross section circumference of cylinder barrel middle section one end, each the end of helicla flute all be located the cross section circumference of the cylinder barrel middle section other end.
2. The novel column spring support structure of claim 1, wherein: the line types of the two groove edges of the spiral groove are two mutually parallel cylindrical spiral lines, and the line types of the head end and the tail end of the spiral groove are both arc transition lines.
3. The novel column spring support structure of claim 1, wherein: internal threads with the same rotation direction are respectively arranged inside two ends of the cylindrical barrel; the internal thread starts from the outer end face of the cylindrical barrel and ends at the adjacent side of the end face of the middle section of the cylindrical barrel.
4. A novel column spring support structure according to claim 1, 2 or 3, wherein: the spiral groove is totally two, and the head ends and the tail ends of the two spiral grooves are respectively positioned in the same radial direction of the circumference of the cross section where the spiral grooves are positioned.
5. A novel column spring support structure according to claim 1, 2 or 3, wherein: the number of the spiral grooves is three, and the head ends and the tail ends of the three spiral grooves respectively trisect the circumference of the cross section where the spiral grooves are located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920793250.3U CN210980417U (en) | 2019-05-29 | 2019-05-29 | Novel column spring supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920793250.3U CN210980417U (en) | 2019-05-29 | 2019-05-29 | Novel column spring supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210980417U true CN210980417U (en) | 2020-07-10 |
Family
ID=71423416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920793250.3U Active CN210980417U (en) | 2019-05-29 | 2019-05-29 | Novel column spring supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210980417U (en) |
-
2019
- 2019-05-29 CN CN201920793250.3U patent/CN210980417U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5944302A (en) | Linear compressor including reciprocating piston and machined double-helix piston spring | |
| EP3054188B1 (en) | Leaf spring, leaf spring group, and compressor | |
| CN101892971B (en) | Linear compressor of plate spring supporting system adopting two different types of lines | |
| EP2150720B1 (en) | Closed cycle cryogenic cooler | |
| CN101287891B (en) | Cam driven piston compressor | |
| CN1773112A (en) | Moving-magnetic linear compressor | |
| CN210980417U (en) | Novel column spring supporting structure | |
| CN101975151B (en) | Linear compressor with combined spring supporting structure | |
| US10962114B2 (en) | Rolling piston ring, piston and cylinder | |
| CN101162027A (en) | Press compound bearing | |
| CN202001250U (en) | Compressor piston | |
| CN110873033B (en) | Crank connecting rod assembly, compressor and refrigeration equipment | |
| CN209539810U (en) | 10 cylinder diesel crankshaft of V-type | |
| CN209067582U (en) | A kind of sealing piston of hydraulic cylinder device that seal clearance is variable | |
| CN208702696U (en) | Rotary compressor and refrigeration equipment with it | |
| US6907730B2 (en) | Displacer and seal assembly for stirling cycle machines | |
| CN207740160U (en) | Compact reciprocating pump crosshead and transmission case | |
| CN206668513U (en) | A kind of compresser cylinder center flange component of high reliability | |
| CN202082068U (en) | Piston compressor | |
| CN201090543Y (en) | Helix labyrinth seal multi-stage pump balancing disc, balancing drum | |
| CN219639063U (en) | Oil return throttling device and scroll compressor | |
| CN220705873U (en) | Throttle porous element device of air-float piston | |
| WO2003001871A2 (en) | Displacer and seal assembly for stirling cycle machines | |
| CN217748660U (en) | Lead screw supporting device of lead screw supporting box | |
| CN213064135U (en) | Wear-resisting hydraulic hoist with miniaturized absolute sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |