CN212356066U - Through key air expansion shaft - Google Patents
Through key air expansion shaft Download PDFInfo
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- CN212356066U CN212356066U CN202020327839.7U CN202020327839U CN212356066U CN 212356066 U CN212356066 U CN 212356066U CN 202020327839 U CN202020327839 U CN 202020327839U CN 212356066 U CN212356066 U CN 212356066U
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- mandrel
- air bag
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- flat
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Abstract
The utility model discloses a through key air expansion shaft, which comprises a mandrel and a plurality of T-shaped grooves circumferentially arranged around the axis of the mandrel; a plurality of telescopic convex keys are arranged in the T-shaped groove; a flat air bag is arranged between the T-shaped groove and the convex key; the two ends of the mandrel are provided with rotating connecting rods; shaft end cover plates are arranged at two ends of the mandrel; the shaft end cover plate is provided with an air tap; the air tap is communicated with the flat air bag. The mandrel is preferably a steel tube. The utility model discloses a T type groove annular sets up outside the dabber, seals both ends through the end cover board, conveniently assembles and disassembles, can conveniently adjust the physiosis axle diameter through the diameter of adjustment dabber, low in production cost compares with traditional integral type physiosis axle, and the dead weight is little, and the structure is simpler, and through T type groove installation convex key, can conveniently adjust the quantity of convex key as required, and the tight power that rises is big, and the atress is even.
Description
Technical Field
The utility model relates to an inflatable shaft especially relates to a logical key inflatable shaft.
Background
The inflatable shaft is a special winding and unwinding shaft, namely, the shaft with the surface capable of protruding after being inflated by high pressure and the shaft with the surface part capable of retracting rapidly after being deflated is called the inflatable shaft,
the major diameter inflatable shaft is the whole pipe fitting structure mostly in the existing market, and the dead weight is big, is difficult to disassemble, is difficult to maintain, and the integral type structure has also increaseed manufacturing cost, therefore it is necessary to design a convenient production, the through key inflatable shaft that the dead weight is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a convenient production, logical key inflatable shaft that dead weight is low.
Realize the utility model discloses the technical scheme of purpose is: a through key air expansion shaft comprises a mandrel and a plurality of T-shaped grooves circumferentially arranged around the axis of the mandrel; a plurality of telescopic convex keys are arranged in the T-shaped groove; a flat air bag is arranged between the T-shaped groove and the convex key; the two ends of the mandrel are provided with rotating connecting rods; shaft end cover plates are arranged at two ends of the mandrel; the shaft end cover plate is provided with an air tap; the air tap is communicated with the flat air bag. The mandrel is preferably a steel tube.
Two ends of the mandrel are sleeved with shaft end air bag frameworks; the two ends of the T-shaped groove are fixedly connected with the outer peripheral surface of the shaft end air bag framework; and an air passage communicated with the air tap and the flat air bag is arranged in the shaft end air bag framework.
Mounting grooves are formed in two ends of the T-shaped groove; the shaft end air bag framework is provided with a pressing block matched with the mounting groove; the pressing block is fixed with the shaft end air bag framework, so that the T-shaped groove and the flat air bag in the T-shaped groove are fixed.
The outer peripheral surface of the mandrel and the edge of a sleeving hole of the shaft end air bag framework are provided with first flat key grooves which are matched with each other; the shaft end air bag framework is embedded into the first flat key groove through a flat key and connected with the mandrel.
A plurality of reinforcing frameworks are arranged on the mandrel in a spaced manner; the outer edge of the reinforcing framework is fixedly connected with the bottom of the T-shaped groove.
The outer peripheral surface of the mandrel and the edge of the sleeve hole of the reinforcing framework are provided with second flat key grooves which are matched with each other; the reinforcing framework is embedded into the second flat key groove through the flat key and connected with the mandrel.
The connecting rod is arranged around the axis of the mandrel in the circumferential direction; two ends of the connecting rod are respectively fixedly connected with the shaft end air bag framework; the reinforcing framework is provided with a through hole for passing through the connecting rod; the number of the connecting rods is preferably 12.
The T-shaped groove is fixedly connected with the outer peripheral surface of the shaft end air bag framework through a screw; vent holes are formed in the two ends of the bottom of the T-shaped groove; the air passage is communicated with the flat air bag in the T-shaped groove through the vent hole.
And the inlet and the outlet of the air passage are both sleeved with O-shaped sealing rings.
By adopting the technical scheme, the utility model discloses following beneficial effect has:
(1) the utility model discloses a T type groove annular sets up outside the dabber, seals both ends through the end cover board, conveniently assembles and disassembles, can conveniently adjust the physiosis axle diameter through the diameter of adjustment dabber, low in production cost compares with traditional integral type physiosis axle, and the dead weight is little, and the structure is simpler, and through T type groove installation convex key, can conveniently adjust the quantity of convex key as required, and the tight power that rises is big, and the atress is even.
(2) The utility model discloses an air cock and flat gasbag are connected to the air flue in the axle head gasbag skeleton, difficult gas leakage, and longe-lived, axle head gasbag skeleton is to the certain limiting displacement of flat gasbag both ends air flue simultaneously, prevents that flat gasbag from aerifing the back and exposing from T type groove both ends, influences the protruding key and rises the tension force degree.
(3) The utility model discloses set up the mounting groove at T type groove both ends, through the fixed flat gasbag of briquetting, the flat gasbag of difficult harm is fixed more firmly.
(4) The utility model discloses a dabber spacer sleeve is equipped with the reinforcement skeleton, and T type groove is fixed on the reinforcement skeleton, is difficult for taking place the condition such as distortion, greatly increased the anti torsion performance of axis body.
(5) The utility model discloses a consolidate skeleton passes through flat key and dabber fixed connection, bears the moment of torsion big, the atress is even, stress is concentrated little, long service life.
(6) The utility model discloses be connected with the connecting rod between the axle head gasbag skeleton at both ends, further improved the anti torsional properties of tensile of axis body, long service life.
(7) The utility model discloses a both ends of T type bottom of groove portion are equipped with the air vent that is used for air flue and flat gasbag intercommunication, occupy small, play certain fixed action to flat gasbag simultaneously, prevent the upset of flat gasbag.
(8) The utility model discloses an equal cover in air flue import and export is equipped with O type sealing washer, strengthens the gas tightness of air flue, is difficult for leaking gas.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a structural sectional view of the present invention.
Fig. 2 is an enlarged view of fig. 1 at a.
Fig. 3 is a schematic structural diagram of the shaft end air bag skeleton of the present invention.
Fig. 4 is a structural sectional view of the shaft end air bag framework of the present invention.
Fig. 5 is a schematic structural view of the mandrel of the present invention.
Fig. 6 is a schematic structural view of the reinforcing frame of the present invention.
Fig. 7 is a schematic structural view of the T-shaped groove of the present invention.
The reference numbers in the drawings are as follows: the structure comprises a mandrel 1, a T-shaped groove 2, a rotating connecting rod 3, a shaft end cover plate 4, a shaft end air bag framework 5, an air passage 5-1, a first flat key groove 5-2, a reinforcing framework 6, a second flat key groove 6-1, a through hole 6-2 and a connecting rod 7.
Detailed Description
(example 1)
See fig. 1 to 7, the logical key inflatable shaft of this embodiment, including dabber 1 and a plurality of T type groove 2 around 1 axis circumference of dabber setting, be equipped with the protruding key of a plurality of telescopic in the T type groove 2, be equipped with flat gasbag between T type groove 2 and the protruding key, 1 both ends of dabber are equipped with rotation connecting rod 3, and 1 both ends of dabber are equipped with axle head apron 4, are equipped with the air cock on the axle head apron 4, air cock and flat gasbag intercommunication. The mandrel 1 is preferably a steel tube.
In order to conveniently connect the air nozzle and the flat air bag, two ends of the mandrel 1 are sleeved with shaft end air bag frameworks 5, two ends of the T-shaped groove 2 are fixedly connected with the outer peripheral surfaces of the shaft end air bag frameworks 5, air passages 5-1 for communicating the air nozzle and the flat air bag are arranged in the shaft end air bag frameworks 5, the air nozzle and the flat air bag are connected through the air passages 5-1, air leakage is not easy, the service life is long, meanwhile, the shaft end air bag frameworks 5 have a certain limiting effect on the air passages 5-1 at two ends of the flat air bag, the flat air bag is prevented from being exposed from two ends of.
In order to fix the flat air bag conveniently, mounting grooves are formed in two ends of the T-shaped groove 2, a pressing block 2-1 matched with the mounting grooves is arranged on the shaft end air bag framework 5, and the pressing block 2-1 is fixed with the shaft end air bag framework 5, so that the flat air bag in the T-shaped groove 2 and the flat air bag in the T-shaped groove 2 are fixed. The flat air bag is fixed through the pressing block 2-1, so that the flat air bag is not easy to damage, and the fixation is firmer.
In order to fix the shaft end air bag framework 5 conveniently, the first flat key groove 5-2 which is matched with the outer circumferential surface of the mandrel 1 and the edge of the sleeving hole of the shaft end air bag framework 5 are arranged, the shaft end air bag framework 5 is embedded into the first flat key groove 5-2 through a flat key and connected with the mandrel 1, and the mandrel 1 is connected through the flat key, so that the bearing torque is large, the stress is uniform, the stress concentration is small, and the service life is long.
In order to increase axis body intensity, the spacer sleeve is equipped with a plurality of and consolidates skeleton 6 on the dabber 1, consolidates 6 outer fringe of skeleton and 2 bottom fixed connections in T type groove, and T type groove 2 is fixed on consolidating skeleton 6, and the difficult circumstances such as taking place the distortion, greatly increased the anti torsional properties of axis body.
In order to fix the reinforcing framework 6 conveniently, the second flat key groove 6-1 matched with the outer peripheral surface of the mandrel 1 and the edge of the sleeving hole of the reinforcing framework 6 are arranged, the reinforcing framework 6 is embedded into the second flat key groove 6-1 through a flat key to be connected with the mandrel 1, the mandrel 1 is connected through the flat key, and the reinforcing framework is large in bearing torque, uniform in stress, small in stress concentration and long in service life.
In order to further increase the axis body intensity, still include a plurality of connecting rods 7 that set up around 1 axis circumference of dabber, connecting rod 7 both ends respectively with axle head gasbag skeleton 5 fixed connection, be equipped with on the reinforcement skeleton 6 and be used for through the through-hole 6-2 of connecting rod 7, further improved the tensile antitorque song performance of axis body, long service life obtains according to a large amount of experiences and experiments, and 7 preferred numbers of connecting rods are 12. At this time, the self-weight is small and the tensile and torsion resistance is high.
In order to facilitate the connection of the air passage 5-1 and the flat air bag, the T-shaped groove 2 is fixedly connected with the outer peripheral surface of the shaft end air bag framework 5 through a screw, vent holes are formed in two ends of the bottom of the T-shaped groove 2, the air passage 5-1 is communicated with the flat air bag in the T-shaped groove 2 through the vent holes, the air passage 5-1 penetrates through the vent holes in the bottom of the T-shaped groove 2 to supply air for the flat air bag, the occupied size is small, meanwhile, a certain fixing effect is achieved on the flat.
In order to enhance the air tightness of the air passage 5-1, an inlet and an outlet of the air passage 5-1 are sleeved with O-shaped sealing rings.
Fig. 7 is a schematic structural view of the T-shaped groove 2 in this embodiment, in which a row of through holes are formed in the middle, a larger hole is an air passage through hole, and a smaller hole is a fixing hole, so that the T-shaped groove 2 is fixedly connected with the shaft end air bag framework 5 and the reinforcing framework 6.
During production, firstly, the reinforcing framework 6 is sleeved on the mandrel 1, the connecting rod 7 penetrates through the reinforcing framework, then the shaft end air bag framework 5 is installed, two ends of the connecting rod 7 are connected with the shaft end air bag framework 5 through screws, then the T-shaped groove 2 is installed, the pressing block 2-1 is installed in the installation groove, then the fixing hole in the T-shaped groove 2 is aligned to the fixing hole in the outer peripheral surface of the reinforcing framework, the flat air bag and the convex key are sequentially installed in the T-shaped groove 2 through screw fixation, the flat air bag is communicated with the outlet of the air passage 5-1, the air nozzle is installed at the inlet of the air passage 5-1 of the shaft end air bag framework 5, finally, the shaft end cover plate 4 is.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a logical key inflatable shaft which characterized in that: comprises a mandrel (1) and a plurality of T-shaped grooves (2) which are circumferentially arranged around the axis of the mandrel (1); a plurality of telescopic convex keys are arranged in the T-shaped groove (2); a flat air bag is arranged between the T-shaped groove (2) and the convex key; two ends of the mandrel (1) are provided with rotating connecting rods (3); two ends of the mandrel (1) are provided with shaft end cover plates (4); the shaft end cover plate (4) is provided with an air tap; the air tap is communicated with the flat air bag.
2. The through-key inflatable shaft according to claim 1, wherein: two ends of the mandrel (1) are sleeved with shaft end air bag frameworks (5); the two ends of the T-shaped groove (2) are fixedly connected with the outer peripheral surface of the shaft end air bag framework (5); an air passage (5-1) communicating the air tap and the flat air bag is arranged in the shaft end air bag framework (5).
3. The through-key inflatable shaft according to claim 2, wherein: mounting grooves are formed in two ends of the T-shaped groove (2); the shaft end air bag framework (5) is provided with a pressing block (2-1) matched with the mounting groove; the pressing block (2-1) is fixed with the shaft end air bag framework (5), so that the T-shaped groove (2) and the flat air bag in the T-shaped groove (2) are fixed.
4. The through-key inflatable shaft according to claim 2, wherein: the outer peripheral surface of the mandrel (1) and the edge of a sleeving hole of the shaft end air bag framework (5) are provided with first flat key grooves (5-2) which are matched with each other; the shaft end air bag framework (5) is embedded into the first flat key groove (5-2) through a flat key and is connected with the mandrel (1).
5. The through-key inflatable shaft according to claim 2, wherein: a plurality of reinforcing frameworks (6) are sleeved on the mandrel (1) at intervals; the middle part of the mandrel (1) is provided with a sleeve hole; the outer edge of the reinforcing framework (6) is fixedly connected with the bottom of the T-shaped groove (2).
6. The through-key inflatable shaft according to claim 4, wherein: the outer peripheral surface of the mandrel (1) and the edge of a sleeving hole of the reinforcing framework (6) are provided with second flat key grooves (6-1) which are matched with each other; the reinforcing framework (6) is embedded into the second flat key groove (6-1) through a flat key and is connected with the mandrel (1).
7. The through-key inflatable shaft according to claim 5, wherein: the connecting rod mechanism also comprises a plurality of connecting rods (7) which are arranged around the axis of the mandrel (1) in the circumferential direction; two ends of the connecting rod (7) are respectively fixedly connected with the shaft end air bag framework (5); the reinforcing framework (6) is provided with a through hole (6-2) for passing through the connecting rod (7).
8. The through-key inflatable shaft according to claim 2, wherein: the T-shaped groove (2) is fixedly connected with the outer peripheral surface of the shaft end air bag framework (5) through a screw; vent holes are formed in the two ends of the bottom of the T-shaped groove (2); the air passage (5-1) is communicated with the flat air bag in the T-shaped groove (2) through a vent hole.
9. The through-key inflatable shaft according to claim 2, wherein: and the inlet and the outlet of the air passage (5-1) are sleeved with O-shaped sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020327839.7U CN212356066U (en) | 2020-03-16 | 2020-03-16 | Through key air expansion shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020327839.7U CN212356066U (en) | 2020-03-16 | 2020-03-16 | Through key air expansion shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212356066U true CN212356066U (en) | 2021-01-15 |
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ID=74146283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020327839.7U Active CN212356066U (en) | 2020-03-16 | 2020-03-16 | Through key air expansion shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212356066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294445A (en) * | 2021-05-07 | 2021-08-24 | 常州荣玖机械有限公司 | Convex key type inflatable shaft with multi-stage adjusting function |
-
2020
- 2020-03-16 CN CN202020327839.7U patent/CN212356066U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294445A (en) * | 2021-05-07 | 2021-08-24 | 常州荣玖机械有限公司 | Convex key type inflatable shaft with multi-stage adjusting function |
| CN113294445B (en) * | 2021-05-07 | 2024-04-16 | 常州荣玖机械股份有限公司 | Convex key type air expansion shaft with multistage adjusting function |
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