CN212024415U - Air expansion shaft - Google Patents
Air expansion shaft Download PDFInfo
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- CN212024415U CN212024415U CN201922366739.5U CN201922366739U CN212024415U CN 212024415 U CN212024415 U CN 212024415U CN 201922366739 U CN201922366739 U CN 201922366739U CN 212024415 U CN212024415 U CN 212024415U
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- sleeve
- air
- shaft
- inflatable
- shaft rod
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Abstract
An air expansion shaft comprises a solid shaft rod, wherein a sleeve is sleeved on the periphery of the shaft rod, the shaft rod is detachably and fixedly connected with the sleeve, the length of the sleeve is longer than that of the shaft rod, threads are arranged on the inner walls of two ends of the sleeve, blocking threads in threaded connection with the sleeve are arranged on two sides of the shaft rod, a plurality of grooves are formed in the shaft rod, an air bag is arranged in each groove, an expansion nail is arranged on one side of the air bag and is an expansion nail made of polytetrafluoroethylene plastic material, a through groove I in sliding fit with the expansion nail is formed in the sleeve, when the air bag is not inflated, the expansion nails can completely extend into the sleeve, air channels corresponding to the air bags one by one are formed in the shaft rod, air bag air inlet nozzles are arranged on the air bag and are in threaded connection with one end of the air channels, and an air nozzle is in threaded connection with the other end of the air, and a through groove II convenient for installing an air faucet is arranged on the sleeve.
Description
Technical Field
The utility model relates to an inflatable shaft's technical field, specific inflatable shaft.
Background
The inflatable shaft is a special winding and unwinding shaft, the surface part can be expanded after high-pressure inflation, and the surface part can be quickly retracted after deflation. The inflatable shaft is very convenient and quick to use, only a user needs to prepare an air source, when the winding drum core needs to be locked, the air faucet on the inflatable shaft is inflated, and when the winding drum core needs to be released for unloading, the sliding air core on the air faucet is pressed down by hand.
The universal air expansion shaft comprises a hollow shaft rod, an air bag and a plurality of expansion nails uniformly arranged around the shaft rod, the air bag is arranged in the shaft rod, the expansion nails are arranged between the air bag and the shaft rod, a first through groove is formed in the shaft rod, the expansion nails extend out of the first through groove, and an inflating nozzle is further arranged at one end of the shaft rod.
The general inflatable shaft has the following problems: 1. the winding drum core is generally made of a steel pipe, the expansion nail of the existing air expansion shaft is an expansion nail made of a metal material, the hardness of the metal expansion nail is almost the same as that of the winding drum core made of the steel pipe, and the winding drum core and the metal expansion nail are easy to slip; 2. when the air bag leaks, the whole inflatable shaft cannot be used, and production faults are caused. This is a disadvantage of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that it is not enough to prior art exist exactly, and provide an inflatable shaft, on the one hand, increased the frictional force between nail and the reel core that expands, reduced the phenomenon of skidding between inflatable shaft and the reel core, on the other hand is provided with a plurality of independent gasbags, and when gas leakage appeared in one of them gasbag, other gasbags can also guarantee inflatable shaft and continue to use.
The scheme is realized by the following technical measures: an air expansion shaft comprises a solid shaft rod, wherein a sleeve is sleeved on the periphery of the shaft rod, the shaft rod is detachably and fixedly connected with the sleeve, the length of the sleeve is longer than that of the shaft rod, threads are arranged on the inner walls of two ends of the sleeve, blocking threads in threaded connection with the sleeve are arranged on two sides of the shaft rod, a plurality of grooves are formed in the shaft rod, an air bag is arranged in each groove, an expansion nail is arranged on one side of the air bag and is an expansion nail made of polytetrafluoroethylene plastic material, a through groove I in sliding fit with the expansion nail is formed in the sleeve, when the air bag is not inflated, the expansion nails can completely extend into the sleeve, air channels corresponding to the air bags one by one are formed in the shaft rod, air bag air inlet nozzles are arranged on the air bag and are in threaded connection with one end of the air channels, and an air nozzle is in threaded connection with the other end of the air, and a through groove II convenient for installing an air faucet is arranged on the sleeve. By adopting the technical scheme, the expansion nail is made of polytetrafluoroethylene plastic material, so that the friction force between the expansion nail and the winding drum core is increased when the expansion nail is used, and the possibility of slippage between the air expansion shaft and the winding drum core is reduced; be provided with a plurality of gasbags, every gasbag all is connected with solitary gas passage, all is connected with solitary air cock on every gas passage for a plurality of gasbags can the isolated operation, and when gas leakage appeared in one of them gasbag, other gasbags can also guarantee that the inflatable shaft continues to use.
Preferably, the section of the expansion nail is T-shaped.
Preferably, the sleeve is connected with the shaft through a bolt.
Preferably, the air nozzles are arranged at two ends of the shaft rod. By adopting the technical scheme, the air tap leaks outwards, so that the air bag can be conveniently inflated or deflated.
Therefore, compared with the prior art, the utility model has the substantive characteristics and the progress, and the beneficial effects of the implementation are also obvious.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Wherein: 1-sleeve, 1.1-through groove I, 1.2-through groove II, 2-plug thread, 3-shaft lever, 3.1-groove, 3.2-gas channel, 4-air bag, 4.1-air bag inlet nozzle, 5-expansion nail, 6-air nozzle and 7-bolt.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the following explains the present solution by way of specific embodiments and with reference to the accompanying drawings.
As shown in fig. 1 and 2, an inflatable shaft comprises a solid shaft rod 3, a sleeve 1 is sleeved on the periphery of the shaft rod 3, the shaft rod 3 is fixedly connected with the sleeve 1 through a bolt 7, the length of the sleeve 1 is greater than that of the shaft rod 3, threads are arranged on the inner walls of two ends of the sleeve 1, two sides of the shaft rod 3 are provided with plug wires 2 in threaded connection with the sleeve 1, the shaft rod 3 is provided with a plurality of grooves 3.1, each groove 3.1 is internally provided with an air bag 4, one side of each air bag 4 is provided with an inflation nail 5, each inflation nail 5 is an inflation nail made of polytetrafluoroethylene plastic material, the sleeve 1 is provided with a through groove i 1.1 in sliding fit with the inflation nail 5, when the air bag 4 is not inflated, the inflation nails 5 can fully extend into the sleeve 1, when the air bag 4 is inflated with a sufficient amount of air, the inflation nails 5 can extend to the outside of the sleeve 1, be provided with the gas passage 3.2 with 4 one-to-one of gasbag in axostylus axostyle 3, be provided with gasbag suction nozzle 4.1 on the gasbag 4, gasbag suction nozzle 4.1 and gas passage 3.2's one end threaded connection, gas passage 3.2's other end threaded connection has air cock 6, be provided with logical groove II 1.2 of being convenient for install air cock 6 on the sleeve 1, air cock 6 sets up the both ends at axostylus axostyle 3.
The expansion nail 5 is made of polytetrafluoroethylene plastic material, so that the friction force between the expansion nail 5 and the winding drum core is increased when the expansion nail is used, and the possibility of slippage between the air expansion shaft and the winding drum core is reduced; be provided with a plurality of gasbags 4, every gasbag 4 all is connected with solitary gas passage 3.2, all is connected with solitary air cock 6 on every gas passage 3.2 for a plurality of gasbags 4 can the isolated operation, and when air leakage appeared in one of them gasbag 4, other gasbags 4 can also guarantee that the inflatable shaft continues to use.
The technical features of the present invention that are not described in the present invention can be realized by or using the prior art, and are not described herein again, and certainly, the above description is not limited to the limitations of the present invention, the present invention is not limited to the above embodiments, and the changes, modifications, additions or replacements made by the technical personnel in the field in the essential scope of the present invention should also belong to the protection scope of the present invention.
Claims (4)
1. An inflatable shaft is characterized in that: the inflatable sleeve comprises a solid shaft lever (3), a sleeve (1) is sleeved on the periphery of the shaft lever (3), the shaft lever (3) is detachably and fixedly connected with the sleeve (1), the length of the sleeve (1) is larger than that of the shaft lever (3), threads are arranged on the inner walls of two ends of the sleeve (1), two sides of the shaft lever (3) are provided with plug wires (2) in threaded connection with the sleeve (1), the shaft lever (3) is provided with a plurality of grooves (3.1), an air bag (4) is arranged in each groove (3.1), one side of each air bag (4) is provided with an inflatable nail (5), each inflatable nail (5) is an inflatable nail made of polytetrafluoroethylene plastic material, the sleeve (1) is provided with a through groove I (1.1) in sliding fit with the inflatable nail (5), and when the air bag (4) is not inflated, the inflatable nails (5) can completely extend into the sleeve (1), be provided with in axostylus axostyle (3) with gas channel (3.2) of gasbag (4) one-to-one, be provided with gasbag suction nozzle (4.1) on gasbag (4), gasbag suction nozzle (4.1) and the one end threaded connection of gas channel (3.2), the other end threaded connection of gas channel (3.2) has air cock (6), be provided with logical groove II (1.2) of being convenient for install air cock (6) on sleeve (1).
2. The inflatable shaft of claim 1, wherein: the section of the expansion nail (5) is T-shaped.
3. The inflatable shaft of claim 2, wherein: the sleeve (1) is connected with the shaft lever (3) through a bolt (7).
4. The inflatable shaft of claim 1, wherein: the air nozzles (6) are arranged at two ends of the shaft lever (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922366739.5U CN212024415U (en) | 2019-12-25 | 2019-12-25 | Air expansion shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922366739.5U CN212024415U (en) | 2019-12-25 | 2019-12-25 | Air expansion shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212024415U true CN212024415U (en) | 2020-11-27 |
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ID=73483076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922366739.5U Active CN212024415U (en) | 2019-12-25 | 2019-12-25 | Air expansion shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212024415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120700A (en) * | 2021-05-11 | 2021-07-16 | 浙江晶达建材科技有限公司 | Automatic inner shaft supporting device on high-molecular modified asphalt shingle feeding production line |
-
2019
- 2019-12-25 CN CN201922366739.5U patent/CN212024415U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120700A (en) * | 2021-05-11 | 2021-07-16 | 浙江晶达建材科技有限公司 | Automatic inner shaft supporting device on high-molecular modified asphalt shingle feeding production line |
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