CN202719294U - Hard tube joint and connecting structure between hard tube joint and hard tube - Google Patents
Hard tube joint and connecting structure between hard tube joint and hard tube Download PDFInfo
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- CN202719294U CN202719294U CN 201220421822 CN201220421822U CN202719294U CN 202719294 U CN202719294 U CN 202719294U CN 201220421822 CN201220421822 CN 201220421822 CN 201220421822 U CN201220421822 U CN 201220421822U CN 202719294 U CN202719294 U CN 202719294U
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- connecting end
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Abstract
The utility model discloses a hard tube joint which is provided with a hard tube connecting end (1) and an element connecting end (2). The hard tube connecting end is hollow, the inner circumferential surface of the hard tube connecting end (1) is column-shaped, and teeth (3) are arranged on the inner circumferential surface of the hard tube connecting end (1). The utility model further discloses a connecting structure between the hard tube joint and a hard tube. The connecting structure comprises the hard tube joint (7) and the hard tube (8), wherein the hard tube joint (7) is provided, the hard tube (8) is inserted into the hard tube connecting end (1) of the hard tube joint (7) and matched with the hard tube connecting end (1), and the teeth (3) extrude the outer surface of the hard tube (8) so that depressions (10) matched with the teeth (3) can be formed on the outer surface of the hard tube (8). The hard tube joint nearly includes all the advantages and overcomes all defects of welding-type hard tube joints and sleeved-type hard tube joints.
Description
Technical field
The utility model relates to the hydraulics field, particularly, relates to the linkage structure between hard pipe joint and hard pipe joint and the hard tube.
Background technique
At present, in the hydraulic hard tube assembly, the mode of being tightly connected between joint and the hard tube (for example metal tube) mainly contains two kinds of welding type and FERRULETYPE.
Welding type is to utilize various welding methods that the material of joint and hard tube is merged, and is tightly connected thereby form.Although the cost of material that welding type adopts is lower, it is relatively high to weld consumptive material and human cost, and manufacturing efficiency is lower, is unfavorable for mass production.In addition, in welding process, can produce light pollution, and the flue dust that produces and splash etc. residue in easily in the pipe fitting in welding process, thereby cause the bad control of pipe fitting turbidity test.
FERRULETYPE is to utilize chip sleeve premounting machine to cooperate the cutting ferrule conical surface to produce tightening force and thrust, make the cutting edge of cutting ferrule cut the material on hard tube surface, thereby fill the gap between cutting ferrule and the hard tube, the conical surface tightening force that screw thread is tightened generation when assembling at last just can make cutting ferrule and hard tube seal.FERRULETYPE efficient is higher, beautiful shape, and energy consumption is low, and the turbidity test in the production process are easily control also, but the price of the material that FERRULETYPE adopts is higher.In addition, because each element hydraulic fluid port of hydraulic system is difficult to directly to be tightly connected with cutting ferrule, usually also need to cooperate in addition transit joint to use, when increasing extra cost, also increased sealing surface, make that cost increases, the sealing reliability reduction.
The model utility content
The utility model be intended to overcome defects and provide a kind of and can enhance productivity, turbidity test are good and can reduce the hard pipe joint of cost of material of hard tube and the linkage structure between hard pipe joint and the hard tube.
To achieve these goals, the utility model provides a kind of hard pipe joint, this hard pipe joint has hard tube connecting end and element connecting end, wherein, described hard tube connecting end is that the interior perimeter surface of hard tube connecting end hollow and described is barrel surface, is provided with tooth on the interior perimeter surface of this hard tube connecting end.
Preferably, described ring gear is around the interior perimeter surface setting of described hard tube connecting end.
Preferably, described tooth is annular.
Preferably, described tooth is a plurality of, and these a plurality of ring gears arrange around the interior perimeter surface interval of described hard tube connecting end.
Preferably, described ring gear arranges multi-turn around the interior perimeter surface of described hard tube connecting end, and this multi-turn tooth is arranged along the length direction interval of described hard tube connecting end.
Preferably, the cross section of described tooth is triangle.
Preferably, the center of described hard tube connecting end is pointed at the tip of described tooth along the radial direction of the interior perimeter surface of described hard tube connecting end.
Preferably, be provided with annular groove on the interior perimeter surface of described hard tube connecting end.
Preferably, described hard tube connecting end comprises that first cooperates section and second to cooperate section, the described first hard tube that cooperates section to be suitable for will being connected with described hard pipe joint forms interference fit, described second cooperates the internal diameter of section less than the internal diameter of described the first cooperation section, and described tooth is arranged on described first and cooperates on the interior perimeter surface of section.
Preferably, described second to cooperate section be two sections, and this two section second cooperates section to lay respectively at described first two ends that cooperate section.
In addition, the utility model also provides the linkage structure between a kind of hard pipe joint and the hard tube, this linkage structure comprises hard pipe joint and hard tube, wherein, described hard pipe joint is hard pipe joint provided by the utility model, described hard tube inserts in the hard tube connecting end of described hard pipe joint and with described hard tube connecting end and cooperatively interacts, and described tooth pushes the outer surface of described hard tube and forms the depression of mutually mating with described tooth at the outer surface of described hard tube.
Preferably, be provided with annular groove on the interior perimeter surface of described hard tube connecting end, be provided with Sealing in this annular groove, the seal is sealed and matched with described hard tube connecting end and described hard tube respectively.
Preferably, compare with described tooth, described Sealing is more away from described element connecting end.
Preferably, described hard tube connecting end comprises that first cooperates section and second to cooperate section, this the first cooperation section and second cooperates the described hard tube interference fit of Duan Junyu, described second cooperates the internal diameter of section to tighten up less than the internal diameter of described the first cooperation section and with described hard tube, and described tooth is arranged on described first and cooperates on the interior perimeter surface of section.
Preferably, described second to cooperate section be two sections, and this two section second cooperates section to lay respectively at described first two ends that cooperate section.
Linkage structure between the hard pipe joint that the utility model provides and hard pipe joint and the hard tube possesses following advantage:
1) compare with the hard pipe joint of existing welding type, can reduce consumptive material and human cost, manufacturing efficiency is higher, can mass production, and also turbidity test are good, energy-saving and environment friendly.
2) compare with the hard pipe joint of existing FERRULETYPE, because the interior hole shape that hard tube is withheld after the compression according to the hard tube connecting end carries out compressive strain, fit with the internal surface of hard tube connecting end, thus lower to the dimension precision requirement of hard tube, thus reduced the cost of material of hard tube.In addition, the hard pipe joint that the utility model provides does not need to cooperate transit joint to use, and has reduced sealing surface when reducing cost, and cost reduction, sealing reliability are improved.
As seen, the hard pipe joint that the utility model provides has almost comprised all advantages of the hard pipe joint of the hard pipe joint of welding type and FERRULETYPE, and has overcome all shortcomings of the hard pipe joint of the hard pipe joint of welding type and FERRULETYPE, possesses preferably application prospect.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with following embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the hard pipe joint that provides of the utility model;
Fig. 2 is the hard pipe joint that provides of the utility model and the linkage structure schematic representation between the hard tube;
Fig. 3 is A section enlarged diagram among Fig. 2.
Description of reference numerals
1: the hard tube connecting end; 2: the element connecting end; 3: tooth; 4: annular groove; 5: the first cooperation sections; 6: the second cooperation sections; 7: hard pipe joint; 8: pipe; 9: Sealing; 10: depression; 11: take over; 12: nut.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
As shown in Figure 1, the utility model provides a kind of hard pipe joint, this hard pipe joint has hard tube connecting end 1 and element connecting end 2, wherein, described hard tube connecting end 1 is barrel surface for interior perimeter surface hollow and described hard tube connecting end 1, is provided with tooth 3 on the interior perimeter surface of this hard tube connecting end 1.
As shown in Figures 2 and 3, the hard pipe joint that the utility model provides is when being connected with hard tube, hard tube 8 is inserted in the hard tube connecting end 1 of hard pipe joint 7, utilize buckle machine to withhold hard tube connecting end 1, the interior hole shape that hard tube 8 is withheld after the compression according to hard tube connecting end 1 carries out compressive strain, cooperatively interact the outer surface of tooth 3 extruding hard tubes 8 and form and the mutual depressions 10 of coupling of tooth 3 at the outer surface of hard tube 8 with the internal surface of hard tube connecting end 1.The hard pipe joint that the utility model provides utilizes tooth 3 to form depression 10 at the outer surface of hard tube 8 by the mode of withholding, and utilize tooth 3 and depression 10 cooperatively interact to realize hard tube 8 and hard tube connecting end 1 firmly be connected and tentatively seal.
Tooth 3 can suitably be arranged on the interior perimeter surface of hard tube connecting end 1, be connected with the firm of hard tube connecting end 1 as long as can realize hard tube 8.In order to make hard tube 8 stressed evenly and make things convenient for the layout of tooth 3, preferably, described tooth 3 is around the interior perimeter surface setting of described hard tube connecting end 1.
Tooth 3 can be taked various suitable forms, and according to a kind of mode of execution of the present utility model, described tooth 3 integral body form annular.According to another kind of mode of execution of the present utility model, described tooth 3 is a plurality of, and these a plurality of teeth 3 arrange around the interior perimeter surface interval of described hard tube connecting end 1.In addition, the shape of tooth 3 is according to the shape design of hard tube 8.For example, it is circular that hard tube 8 is generally, and at this moment, tooth 3 correspondingly is designed to ring or circular arc.In addition, tooth 3 interior perimeter surface common and hard tube connecting end 1 are integrally formed.
Generally, described tooth 3 arranges multi-turn around the interior perimeter surface of described hard tube connecting end 1, and this multi-turn tooth 3 is arranged along the length direction interval of described hard tube connecting end 1.As selection, tooth 3 also can arrange a circle around the interior perimeter surface of hard tube connecting end 1.
The cross section of tooth 3 can be various suitable shapes.Preferably, the cross section of described tooth 3 is triangle.Like this, can press hard tube 8 sunken easily by the tip of tooth 3.Further preferably, the center of described hard tube connecting end 1 is pointed at the tip of described tooth 3 along the radial direction of the interior perimeter surface of described hard tube connecting end 1.
According to a kind of preferred implementation of the present utility model, be provided with annular groove 4 on the interior perimeter surface of described hard tube connecting end 1.Like this, can in annular groove 4, Sealing be set, between hard tube connecting end 1 and hard tube 8, to form further sealing, prevent leak of liquid.Sealing can arrange when making hard pipe joint, also can arrange when hard pipe joint is connected with hard tube.In order to make things convenient for the use of hard pipe joint, preferably, be provided with Sealing 9 in the described annular groove 4.Sealing 9 can be taked various suitable forms, can be other sealing materials such as rubber seal or seal felt such as Sealing 9.
According to a kind of preferred implementation of the present utility model, described hard tube connecting end 1 comprises that first cooperates section 5 and second to cooperate section 6, the described first hard tube 8 that cooperates section 5 to be suitable for will being connected with described hard pipe joint forms interference fit, described second cooperates the internal diameter of section 6 less than the internal diameter of described the first cooperation section 5, and described tooth 3 is arranged on described first and cooperates on the interior perimeter surface of section 5.As selection, the internal diameter of the first cooperation section 5 also can be smaller, and namely first hard tubes 8 that cooperate section 5 to be suitable for will being connected with described hard pipe joint form Spielpassung.Because second cooperates the internal diameter of section 6 less than the internal diameter of the first cooperation section 5, so second cooperates section 6 also can form interference fit with hard tube 8, like this, when utilizing buckle machine to withhold hard tube connecting end 1, first cooperate section 5 and second cooperate section 6 all with hard tube 8 interference fit, and second cooperates section 6 that hard tube 8 is tightened up, thereby it is loosening to prevent that hard tube 8 from occuring under the assembling stressing conditions, affects sealing effect.Second cooperates section 6 suitably to arrange, in order to make hard tube 8 more stable, according to a kind of preferred implementation of the present utility model, described second to cooperate section 6 be two sections, and this two section second cooperates section 6 to lay respectively at the described first two ends that cooperate section 5.In mode of execution shown in Figure 1, annular groove 4 will be arranged on described first and cooperate second of section 5 one ends to cooperate section 6 to cut apart.Second cooperates the concrete size of the internal diameter of section 6 suitably to select, as long as can realize effect that hard tube 8 is tightened up.
Described element connecting end 2 is used for being connected with hydraulic element (for example various valves).The element connecting end 2 of the hard pipe joint that the utility model provides is identical with the element connecting end of the hard pipe joint of common welding type, and its structure is conventionally known to one of skill in the art.For example, element connecting end 2 can comprise adapter 11 and be enclosed within the nut 12 of taking on 11.
Described hard tube connecting end 1 forms as one usually with the adapter 11 of element connecting end 2.As selection, the adapter 11 of hard tube connecting end 1 and element connecting end 2 also can separate and forms, and the mode of withholding that then for example adopts the utility model to provide hard tube connecting end 1 and the adapter 11 of element connecting end 2 is tightly connected.
In addition, as shown in Figures 2 and 3, the utility model also provides the linkage structure between a kind of hard pipe joint and the hard tube, this linkage structure comprises hard pipe joint 7 and hard tube 8, wherein, described hard pipe joint 7 is hard pipe joint provided by the utility model, described hard tube 8 inserts in the hard tube connecting end 1 of described hard pipe joint 7 and with described hard tube connecting end 1 and cooperatively interacts, the outer surface of the described hard tube 8 of described tooth 3 extruding and form and the mutual depressions 10 of coupling of described tooth 3 at the outer surface of described hard tube 8.
As indicated above, after in the hard tube connecting end 1 that hard tube 8 is inserted hard pipe joint 7, utilize buckle machine to withhold hard tube connecting end 1, the interior hole shape that hard tube 8 is withheld after the compression according to hard tube connecting end 1 carries out compressive strain, cooperatively interact the outer surface of tooth 3 extruding hard tubes 8 and form and the mutual depressions 10 of coupling of tooth 3 at the outer surface of hard tube 8 with described hard tube connecting end 1.Hard pipe joint 7 utilizes tooth 3 to form depression 10 at the outer surface of hard tube 8 by the mode of withholding, and utilize tooth 3 and depression 10 cooperatively interact to realize hard tube 8 and hard tube connecting end 1 firmly be connected and tentatively seal.
According to a kind of preferred implementation of the present utility model, be provided with annular groove 4 on the interior perimeter surface of described hard tube connecting end 1, be provided with Sealing 9 in this annular groove 4, the seal 9 is sealed and matched with described hard tube connecting end 1 and described hard tube 8 respectively.Like this, can between hard tube connecting end 1 and hard tube 8, form further sealing, prevent leak of liquid.Sealing 9 can be taked various suitable forms, and for example Sealing 9 can be rubber seal or other sealing material.Seal in order at first to utilize tooth 3 to form tentatively, and utilize Sealing 9 to form further sealing, preferably, compare with described tooth 3, described Sealing 9 is more away from described element connecting end 2.
According to a kind of preferred implementation of the present utility model, described hard tube connecting end 1 comprises that first cooperates section 5 and second to cooperate section 6, this first cooperate section 5 and second cooperate section 6 all with described hard tube 8 interference fit, described second cooperates the internal diameter of section 6 to tighten up less than the internal diameter of described the first cooperation section 5 and with described hard tube 8, and described tooth 3 is arranged on described first and cooperates on the interior perimeter surface of section 5.Like this, it is loosening to prevent that hard tube 8 from occuring under the assembling stressing conditions, affects sealing effect.In addition, as selection, first cooperates section 5 also can form Spielpassung with hard tube 8.Second cooperates section 6 suitably to arrange, arranges for convenient, and according to a kind of preferred implementation of the present utility model, described second to cooperate section 6 be two sections, and this two section second cooperates section 6 to lay respectively at the described first two ends that cooperate section 5.In mode of execution shown in Figure 2, annular groove 4 will be arranged on described first and cooperate second of section 5 one ends to cooperate section 6 to cut apart.Second cooperates the concrete size of the internal diameter of section 6 suitably to select, as long as can realize effect that hard tube 8 is tightened up.
The structure of hard pipe joint 7 other parts is described above, and no longer too much illustrates at this.
Hard tube 8 can be various hard tubes, for example metal tube.The hardness of tooth 3 is usually above the hardness of hard tube 8, and the outer surface with the outer surface that can push hard tube 8 at hard tube 8 forms depression 10.
The hard pipe joint that the utility model embodiment provides in use, Sealing 9 at first is set in annular groove 4, then hard tube 8 is inserted in the hard tube connecting end 1 of hard pipe joint 7, utilize buckle machine to withhold hard tube connecting end 1, the interior hole shape that hard tube 8 is withheld after the compression according to hard tube connecting end 1 carries out compressive strain, cooperatively interact the outer surface of tooth 3 extruding hard tubes 8 and form and the mutual depressions 10 of coupling of tooth 3 at the outer surface of hard tube 8 with the internal surface of hard tube connecting end 1.The hard pipe joint that the utility model provides utilizes tooth 3 to form depression 10 at the outer surface of hard tube 8 by the mode of withholding, and utilize tooth 3 and depression 10 cooperatively interact to realize hard tube 8 and hard tube connecting end 1 firmly be connected and tentatively seal.Sealing 9 is sealed and matched with hard tube connecting end 1 and hard tube 8 respectively, thereby realizes further sealing.And second cooperates section 6 that hard tube 8 is tightened up, and it is loosening to prevent that hard tube 8 from occuring under the assembling stressing conditions, affects sealing effect.
Linkage structure between the hard pipe joint that the utility model provides and hard pipe joint and the hard tube possesses following advantage:
1) compare with the hard pipe joint of existing welding type, can reduce consumptive material and human cost, efficient is higher, can mass production, and also turbidity test are good, energy-saving and environment friendly.
2) compare with the hard pipe joint of existing FERRULETYPE, because the interior hole shape that hard tube 8 is withheld after the compression according to hard tube connecting end 1 carries out compressive strain, fit with the internal surface of hard tube connecting end 1, thus lower to the dimension precision requirement of hard tube 8, thus reduced the cost of material of hard tube 8.In addition, the hard pipe joint that the utility model provides does not need to cooperate transit joint to use, and has reduced sealing surface when reducing cost, and cost reduction, sealing reliability are improved.
3) the utility model can be by the preliminary sealing that cooperatively interacts to realize hard tube 8 and hard tube connecting end 1 of tooth 3 and depression 10, and realizes further sealing by Sealing 9, so have rigidity and flexible double seal, good sealing effect.
As seen, the hard pipe joint that the utility model provides has almost comprised all advantages of the hard pipe joint of the hard pipe joint of welding type and FERRULETYPE, and has overcome all shortcomings of the hard pipe joint of the hard pipe joint of welding type and FERRULETYPE, possesses preferably application prospect.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the utility model is to the no longer separately explanation of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (15)
1. hard pipe joint, this hard pipe joint has hard tube connecting end (1) and element connecting end (2), it is characterized in that, described hard tube connecting end (1) is barrel surface for interior perimeter surface hollow and described hard tube connecting end (1), is provided with tooth (3) on the interior perimeter surface of this hard tube connecting end (1).
2. hard pipe joint according to claim 1 is characterized in that, described tooth (3) is around the interior perimeter surface setting of described hard tube connecting end (1).
3. hard pipe joint according to claim 2 is characterized in that, described tooth (3) is annular.
4. hard pipe joint according to claim 2 is characterized in that, described tooth (3) is a plurality of, and these a plurality of teeth (3) arrange around the interior perimeter surface interval of described hard tube connecting end (1).
5. hard pipe joint according to claim 2 is characterized in that, described tooth (3) arranges multi-turn around the interior perimeter surface of described hard tube connecting end (1), and this multi-turn tooth (3) is arranged along the length direction interval of described hard tube connecting end (1).
6. the described hard pipe joint of any one in 5 according to claim 1 is characterized in that the cross section of described tooth (3) is triangle.
7. hard pipe joint according to claim 6 is characterized in that, the center of described hard tube connecting end (1) is pointed at the tip of described tooth (3) along the radial direction of the interior perimeter surface of described hard tube connecting end (1).
8. hard pipe joint according to claim 1 is characterized in that, is provided with annular groove (4) on the interior perimeter surface of described hard tube connecting end (1).
9. hard pipe joint according to claim 1, it is characterized in that, described hard tube connecting end (1) comprises that first cooperates section (5) and second to cooperate section (6), the described first hard tube (8) that cooperates section (5) to be suitable for will being connected with described hard pipe joint forms interference fit, described second cooperates the internal diameter of section (6) less than the internal diameter of described the first cooperation section (5), and described tooth (3) is arranged on described first and cooperates on the interior perimeter surface of section (5).
10. hard pipe joint according to claim 9 is characterized in that, described the second cooperation section (6) is two sections, this two section second two ends that cooperate section (6) to lay respectively at described the first cooperation section (5).
11. the linkage structure between a hard pipe joint and the hard tube, this linkage structure comprises hard pipe joint (7) and hard tube (8), it is characterized in that, described hard pipe joint (7) is the described hard pipe joint of any one in 7 according to claim 1, described hard tube (8) inserts in the hard tube connecting end (1) of described hard pipe joint (7) and with described hard tube connecting end (1) and cooperatively interacts, and described tooth (3) pushes the outer surface of described hard tube (8) and forms and the mutual depression (10) of coupling of described tooth (3) at the outer surface of described hard tube (8).
12. the linkage structure between hard pipe joint according to claim 11 and the hard tube, it is characterized in that, be provided with annular groove (4) on the interior perimeter surface of described hard tube connecting end (1), be provided with Sealing (9) in this annular groove (4), the seal (9) is sealed and matched with described hard tube connecting end (1) and described hard tube (8) respectively.
13. the linkage structure between hard pipe joint according to claim 12 and the hard tube is characterized in that, compares with described tooth (3), described Sealing (9) is more away from described element connecting end (2).
14. the linkage structure between hard pipe joint according to claim 11 and the hard tube, it is characterized in that, described hard tube connecting end (1) comprises that first cooperates section (5) and second to cooperate section (6), this first cooperate section (5) and second cooperate section (6) all with described hard tube (8) interference fit, described second cooperates the internal diameter of section (6) to tighten up less than the internal diameter of described the first cooperation section (5) and with described hard tube (8), and described tooth (3) is arranged on described first and cooperates on the interior perimeter surface of section (5).
15. the linkage structure between hard pipe joint according to claim 14 and the hard tube is characterized in that, described the second cooperation section (6) is two sections, this two section second two ends that cooperate section (6) to lay respectively at described the first cooperation section (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421822 CN202719294U (en) | 2012-08-23 | 2012-08-23 | Hard tube joint and connecting structure between hard tube joint and hard tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421822 CN202719294U (en) | 2012-08-23 | 2012-08-23 | Hard tube joint and connecting structure between hard tube joint and hard tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719294U true CN202719294U (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220421822 Expired - Fee Related CN202719294U (en) | 2012-08-23 | 2012-08-23 | Hard tube joint and connecting structure between hard tube joint and hard tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202719294U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840401A (en) * | 2012-08-23 | 2012-12-26 | 中联重科股份有限公司 | Rigid tube joint and connection structure between rigid tube joint and rigid tube |
| CN109854829A (en) * | 2017-11-30 | 2019-06-07 | 株式会社涂料韩国 | Jack tube, the pipe with jack tube and the pipe connecting structure using jack tube |
| CN112856060A (en) * | 2021-01-07 | 2021-05-28 | 湖南天力瑞家新材科技股份有限公司 | Method for connecting pipe joint and pipeline |
| CN112856059A (en) * | 2021-01-07 | 2021-05-28 | 湖南天力瑞家新材科技股份有限公司 | Pipe joint |
-
2012
- 2012-08-23 CN CN 201220421822 patent/CN202719294U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840401A (en) * | 2012-08-23 | 2012-12-26 | 中联重科股份有限公司 | Rigid tube joint and connection structure between rigid tube joint and rigid tube |
| CN109854829A (en) * | 2017-11-30 | 2019-06-07 | 株式会社涂料韩国 | Jack tube, the pipe with jack tube and the pipe connecting structure using jack tube |
| CN112856060A (en) * | 2021-01-07 | 2021-05-28 | 湖南天力瑞家新材科技股份有限公司 | Method for connecting pipe joint and pipeline |
| CN112856059A (en) * | 2021-01-07 | 2021-05-28 | 湖南天力瑞家新材科技股份有限公司 | Pipe joint |
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| 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: 20130206 Termination date: 20160823 |