CN205190551U - Hydraulic pressure of no key draw bail expands and overlaps - Google Patents
Hydraulic pressure of no key draw bail expands and overlaps Download PDFInfo
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- CN205190551U CN205190551U CN201520765264.6U CN201520765264U CN205190551U CN 205190551 U CN205190551 U CN 205190551U CN 201520765264 U CN201520765264 U CN 201520765264U CN 205190551 U CN205190551 U CN 205190551U
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- expands
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Abstract
The utility model provides a hydraulic pressure of no key draw bail expands and overlaps, belongs to hydraulic pressure mechanical parts technical field. Including endotheca, piston, overcoat, plug screw, install on the outer wall of endotheca (1) piston (2), piston (2) outer wall has 2.5 - 3.5 tapering, and overcoat (3) inner wall tapering is the same with piston (2) outer wall tapering, be in the same place through welded joint after piston (2) installation finishes endotheca (1) and overcoat (3), twist in the terminal surface screw position of overcoat (3) plug screw (4), or twist the radial screw position at overcoat (3). The advantage lies in, installation, adjustment, dismantles conveniently, installation, adjustment, dismantle the in -process and do not damage mating surface, and long service life, intensity is high, and the cover that expands relies on tendency drive, weakens there is the keyway by the connecting piece, does not also have relative motion, can not produce wearing and tearing in the work, when transshipping, will lose the anastomosis, can not receive the damage by protective apparatus.
Description
Technical field
The utility model belongs to hydro-mechanical components technical field, in particular, provides a kind of hydraulic expanding cover of keyless structure, is applicable to the device that in big-and-middle-sized machinery, wheel hub and axle connect.Can be widely used in, in the equipment such as forging and stamping, mine, steel rolling and truck, wheel hub and axle being linked up.
Background technique
Traditional wheel hub and axle connecting mode adopt key connecting.Structure is simple, can transmit larger torque, but machining accuracy General Requirements is high, and keyway adds the intensity of man-hour to axle and wheel hub and has certain reduction, easily produces stress and concentrate in course of working.During key connecting, axle and wheel hub are generally interference fit, generally will heat, cool or adopt pressurized equipment during installation, and mounting and adjusting is inconvenient.When dismantling, also easy certain damage being produced to axle and hub surface, even sometimes needing destructive dismounting.
Summary of the invention
The purpose of this utility model is the hydraulic expanding cover providing a kind of keyless structure, wheel hub and axle connecting mode, solve the installation and removal of traditional connecting mode more difficult, centring property is poor, the problems such as the intensity infringement of keyway to axle is comparatively large, and easy generation stress is concentrated.Further, simple and reasonable, be easy to installation and removal, there is the function of overload protection.
The utility model comprises inner sleeve 1, piston 2, overcoat 3, plug screw 4.Piston 2 is arranged on the outer wall of inner sleeve 1.Piston 2 outer wall has the tapering of 2.5 °-3.5 °, and overcoat 3 inwall tapering is identical with piston 2 outer wall tapering.The inside and outside wall of piston 2 all has helical oil groove.Inner sleeve 1 and overcoat 3 after piston 2 installs by together with weld connection.Overcoat 3 has oilhole (can end face or radial fuel feeding) in OFF, P, ON tri-positions.Behind selected fuel feeding direction, will not need in the screw shutoff of use with plug screw 4, namely plug screw 4 both can be screwed in the end face screwhole position of overcoat 3, also can be screwed in the radial screwhole position of overcoat 3.
Piston (2) inside and outside wall all has helical oil groove, and inside and outside wall helical oil groove has UNICOM's oilhole.
Overcoat (3) has three oil circuits in OFF, ON, P tri-positions, and has six hydraulic fluid ports be connected with oil circuit at axial vane surface and sagittal plane.
The utility model has the advantage of, utilize oil hydraulic cylinder and expansion set principle by the two ingenious combination, installation, adjustment, convenient disassembly, do not damage matching surface, long service life, intensity is high.Expansion set relies on friction driving, does not have keyway to weaken, also without relative movement, can not produce wearing and tearing in work to connected compcnent.When transshipping, will anastomosis be lost, can not be damaged by proterctive equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.Wherein, inner sleeve 1, piston 2, overcoat 3, plug screw 4.
Fig. 2 is the sectional structure schematic diagram that the utility model is in swelling state.Wherein, inner sleeve 1, piston 2, overcoat 3, plug screw 4.
Fig. 3 is the sectional structure schematic diagram that the utility model is in original state.Wherein, inner sleeve 1, piston 2, overcoat 3, plug screw 4.
Fig. 4 is the structural representation of piston 2.
Embodiment
Fig. 1, Fig. 2, Fig. 3 illustrate a kind of embodiment of the present utility model.
The utility model comprises inner sleeve 1, piston 2, overcoat 3, plug screw 4.Piston 2 is arranged on the outer wall of inner sleeve 1.Piston 2 outer wall has the tapering of 2.5 °-3.5 °, and overcoat 3 inwall tapering is identical with piston 2 outer wall tapering.The inside and outside wall of piston 2 all has helical oil groove.Inner sleeve 1 and overcoat 3 after piston 2 installs by together with weld connection.Overcoat 3 has oilhole (can end face or radial fuel feeding) in OFF, P, ON tri-positions.Behind selected fuel feeding direction, will not need in the screw shutoff of use with plug screw 4, namely plug screw 4 both can be screwed in the end face screwhole position of overcoat 3, also can be screwed in the radial screwhole position of overcoat 3.
Wherein Fig. 3 illustrates the initial position of hydraulic expanding cover, now the inner ring of expansion set and axle, and outer ring and wheel hub are gap or transition fit, can easier expansion set and wheel hub be enclosed within axle.After expansion set and wheel hub are in place, P and ON position oilhole to hydraulic expanding cover leads to the hydraulic oil (general employing mobile hydraulic dolly fuel feeding) with certain pressure, now piston 2 moves right, inner sleeve 1 produces resiliently deformable and inwardly expands, internal diameter reduces, overcoat 3 produces resiliently deformable and outwards expands, and external diameter increases, thus makes inner sleeve 1 all become interference fit with axle, overcoat 3 with coordinating of wheel hub.When piston 2 move to as shown in Figure 2 position time, wheel hub and expansion set are all in locking state.
When the position of wheel hub and expansion set needs adjustment or dismounting, P and OFF position oilhole to hydraulic expanding cover leads to the hydraulic oil (general employing mobile hydraulic dolly fuel feeding) with certain pressure, now piston 2 is moved to the left, thus the resiliently deformable of inner sleeve 1 is disappeared, internal diameter returns to original size gradually, the resiliently deformable of overcoat 3 disappears, and external diameter returns to original size gradually.When piston 2 moves to Fig. 3 position, wheel hub and expansion set revert to gap or transition fit, can adjust wheel hub and expansion set or dismantle easily.
Wherein P position oilhole is oilhole, is lubricated in real time hydraulic expanding cover Internal and external cycle by the helical oil groove on piston 2 (as shown in Figure 4).
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. a hydraulic expanding cover for keyless structure, comprises inner sleeve, piston, overcoat, plug screw; It is characterized in that, piston (2) is arranged on the outer wall of inner sleeve (1); Piston (2) outer wall has the tapering of 2.5 °-3.5 °, and overcoat (3) inwall tapering is identical with piston (2) outer wall tapering; Inner sleeve (1) and overcoat (3) after piston (2) installs by weld connection together; Plug screw (4) is screwed in the end face screwhole position of overcoat (3), or is screwed in the radial screwhole position of overcoat (3).
2. the hydraulic expanding cover of keyless structure according to claim 1, is characterized in that, piston (2) inside and outside wall all has helical oil groove, and inside and outside wall helical oil groove has UNICOM's oilhole.
3. the hydraulic expanding cover of keyless structure according to claim 1, is characterized in that, overcoat (3) has three oil circuits in OFF, ON, P tri-positions, and has six hydraulic fluid ports be connected with oil circuit at axial vane surface and sagittal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765264.6U CN205190551U (en) | 2015-09-29 | 2015-09-29 | Hydraulic pressure of no key draw bail expands and overlaps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765264.6U CN205190551U (en) | 2015-09-29 | 2015-09-29 | Hydraulic pressure of no key draw bail expands and overlaps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205190551U true CN205190551U (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520765264.6U Active CN205190551U (en) | 2015-09-29 | 2015-09-29 | Hydraulic pressure of no key draw bail expands and overlaps |
Country Status (1)
| Country | Link |
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| CN (1) | CN205190551U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393652A (en) * | 2016-11-28 | 2017-02-15 | 江苏新美星液体包装工程技术研究中心有限公司 | Mounting structure of swing arm and swing shaft of rotary bottle blowing machine |
| CN108422378A (en) * | 2018-05-30 | 2018-08-21 | 湖南中特液力传动机械有限公司 | Load limiting type of constant filling fluid coupling provision for disengagement and method for dismounting |
| CN114458697A (en) * | 2022-02-16 | 2022-05-10 | 九江市畅球传动机械有限公司 | Novel hydraulic expansion sleeve |
-
2015
- 2015-09-29 CN CN201520765264.6U patent/CN205190551U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393652A (en) * | 2016-11-28 | 2017-02-15 | 江苏新美星液体包装工程技术研究中心有限公司 | Mounting structure of swing arm and swing shaft of rotary bottle blowing machine |
| CN108422378A (en) * | 2018-05-30 | 2018-08-21 | 湖南中特液力传动机械有限公司 | Load limiting type of constant filling fluid coupling provision for disengagement and method for dismounting |
| CN114458697A (en) * | 2022-02-16 | 2022-05-10 | 九江市畅球传动机械有限公司 | Novel hydraulic expansion sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |