CN204572928U - Worm type of reduction gearing - Google Patents
Worm type of reduction gearing Download PDFInfo
- Publication number
- CN204572928U CN204572928U CN201520261856.4U CN201520261856U CN204572928U CN 204572928 U CN204572928 U CN 204572928U CN 201520261856 U CN201520261856 U CN 201520261856U CN 204572928 U CN204572928 U CN 204572928U
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- worm
- wheel shaft
- spring
- butterfly spring
- gear
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Abstract
The utility model discloses a kind of worm type of reduction gearing, comprise casing, the worm gear cooperatively interacted and worm screw is provided with in described casing, it is characterized in that: described worm gear comprises worm-wheel shaft and the worm gear gear ring of split setting, described worm gear gear ring is pressed on worm-wheel shaft by holding down assembly, described holding down assembly comprises spring seat, butterfly spring, described spring seat and butterfly spring are set on described worm-wheel shaft respectively, described spring seat is conflicted on worm gear gear ring, described butterfly spring side is pressed on spring seat, described butterfly spring opposite side is provided with the adjusting part regulating butterfly spring degree of tightness.The spring force carrying out adjustable elastic spring by arranging adjusting part controls worm gear gear ring and is pressed on impacting force on worm-wheel shaft, thus control torque overload quantity.
Description
Technical field
The utility model relates to a kind of worm type of reduction gearing, belongs to speed reducer field.
Background technique
Worm type of reduction gearing is a kind of power transmission mechanism, exports by the high rotating speed of motor being become high pulling torque.The heavy duty industrial equipment such as boats and ships, automobile, lathe are used widely.
The tradition worm gear gear ring of worm type of reduction gearing and worm-wheel shaft normally integrally casting, although intensity is high like this, compactedness good, but easily overload power is delivered on motor when output terminal transships, damage is caused to motor, especially worm type of reduction gearing is generally applied in high pulling torque occasion, overload situations occurs often, and motor is because the situation of overload burning hinders the normal operation of producing, and equipment maintenance cost.Our company devised worm gear gear ring that a kind of split arranges and worm-wheel shaft prevents overload afterwards, but found that contact force between worm gear gear ring and worm-wheel shaft is due to uncontrollable, therefore cannot regulate corresponding torque overload amount.
Model utility content
The purpose of this utility model is to provide a kind of worm type of reduction gearing, and the spring force carrying out adjustable elastic spring by arranging adjusting part controls worm gear gear ring and is pressed on impacting force on worm-wheel shaft, thus control torque overload quantity.
In order to achieve the above object, the technical solution adopted in the utility model is as follows: a kind of worm type of reduction gearing, comprise casing, the worm gear cooperatively interacted and worm screw is provided with in described casing, described worm gear comprises worm-wheel shaft and the worm gear gear ring of split setting, described worm gear gear ring is pressed on worm-wheel shaft by holding down assembly, described holding down assembly comprises spring seat, butterfly spring, described spring seat and butterfly spring are set on described worm-wheel shaft respectively, described spring seat is conflicted on worm gear gear ring, described butterfly spring side is pressed on spring seat, described butterfly spring opposite side is provided with the adjusting part regulating butterfly spring degree of tightness.
Preferably, described adjusting part comprises the bearing, packing ring, the anti-return nut that are set in successively on described worm-wheel shaft, described bearing and worm-wheel shaft Spielpassung are also conflicted with described butterfly spring, and described packing ring and worm-wheel shaft are slidably connected, and described anti-return nut is threaded with worm-wheel shaft.
Preferably, described anti-return nut comprises nut body, and the opposing end face in described packing ring of described nut body is provided with annular flange flange, and described annular flange flange bore inwardly shrinks and includes retaining ring, and the material of described retaining ring is nylon.
Preferably, locating stud is provided with between described spring seat and described worm-wheel shaft.
By adopting technique scheme, regulate the degree of tightness of butterfly spring by adjusting part thus control the impacting force of worm gear gear ring on worm-wheel shaft, when overload quantity can larger a little time, butterfly spring regulate tighter, on the contrary then pine some to adapt to different working condition requirements.Spring seat can be evenly distributed to the elastic force of butterfly spring on worm gear gear ring, and the contact forces of worm gear gear ring and worm-wheel shaft is balanced everywhere.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is erection drawing of the present utility model;
Fig. 2 is the enlarged view at A place in the utility model Fig. 1.
Reference character: 1, casing; 2, worm screw; 3, worm-wheel shaft; 4, worm gear gear ring; 5, spring seat; 6, butterfly spring; 7, bearing; 8, locating stud; 9, packing ring; 10, anti-return nut; 10a, nut body; 10b, annular flange flange; 11, retaining ring.
Embodiment
A kind of worm and gear 2 retarder, comprise casing 1, the worm gear cooperatively interacted and worm screw 2 is provided with in casing 1, worm gear comprises worm-wheel shaft 3 and the worm gear gear ring 4 of split setting, worm gear gear ring 4 is pressed on by holding down assembly on worm-wheel shaft 3, hold down assembly and comprise spring seat 5, butterfly spring 6, spring seat 5 and butterfly spring 6 are set on worm-wheel shaft 3 respectively, spring seat 5 is conflicted on worm gear gear ring 4, butterfly spring 6 side is pressed on spring seat 5, and butterfly spring 6 opposite side is provided with the adjusting part regulating butterfly spring 6 degree of tightness.Regulate the degree of tightness of butterfly spring 6 by adjusting part thus control the impacting force of worm gear gear ring 4 on worm-wheel shaft 3, when overload quantity can larger a little time, butterfly spring 6 regulate tighter, on the contrary then pine some to adapt to different working condition requirements.Spring seat 5 can be evenly distributed to the elastic force of butterfly spring 6 on worm gear gear ring 4, and worm gear gear ring 4 is balanced everywhere with the contact forces of worm-wheel shaft 3.
Wherein, adjusting part comprises the bearing 7 be set in successively on worm-wheel shaft 3, packing ring 9, anti-return nut 10, and bearing 7 is with worm-wheel shaft 3 Spielpassung and conflict with butterfly spring 6, and packing ring 9 and worm-wheel shaft 3 are slidably connected, and anti-return nut 10 is threaded with worm-wheel shaft 3.Here bearing 7 is preferably deep groove ball bearing 7, and this bearing 7 can adapt to higher rotation speed.Being rotated on worm-wheel shaft 3 by anti-return nut 10 makes packing ring 9 and bearing 7 move axially, and bearing 7 is conflicted the object compressing butterfly spring 6 or unclamp with adjusting elasticity on butterfly spring 6.
Wherein, anti-return nut 10 comprises nut body 10a, and the opposing end face in packing ring 9 of nut body 10a is provided with annular flange flange 10b, and annular flange flange 10b bore inwardly shrinks and includes retaining ring 11, and the material of retaining ring 11 is nylon.Here nylon is preferably nylon 1010, and it can fill up anti-return nut 10 and the gap at worm-wheel shaft 3 screw-thread fit place, avoids anti-return nut 10 because casing 1 rocks the situation occurring unclamping.
Wherein, locating stud 8 is provided with between spring seat 5 and worm-wheel shaft 3.Locating stud 8 can ensure spring seat 5 and worm-wheel shaft 3 synchronous axial system, and avoiding relatively rotating causes worm-wheel shaft 3 surface abrasion.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a worm type of reduction gearing, comprise casing, the worm gear cooperatively interacted and worm screw is provided with in described casing, it is characterized in that: described worm gear comprises worm-wheel shaft and the worm gear gear ring of split setting, described worm gear gear ring is pressed on worm-wheel shaft by holding down assembly, described holding down assembly comprises spring seat, butterfly spring, described spring seat and butterfly spring are set on described worm-wheel shaft respectively, described spring seat is conflicted on worm gear gear ring, described butterfly spring side is pressed on spring seat, and described butterfly spring opposite side is provided with the adjusting part regulating butterfly spring degree of tightness.
2. worm type of reduction gearing according to claim 1, it is characterized in that: described adjusting part comprises the bearing, packing ring, the anti-return nut that are set in successively on described worm-wheel shaft, described bearing and worm-wheel shaft Spielpassung are also conflicted with described butterfly spring, described packing ring and worm-wheel shaft are slidably connected, and described anti-return nut is threaded with worm-wheel shaft.
3. worm type of reduction gearing according to claim 2, it is characterized in that: described anti-return nut comprises nut body, the opposing end face in described packing ring of described nut body is provided with annular flange flange, and described annular flange flange bore inwardly shrinks and includes retaining ring, and the material of described retaining ring is nylon.
4. worm type of reduction gearing according to claim 3, is characterized in that: be provided with locating stud between described spring seat and described worm-wheel shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261856.4U CN204572928U (en) | 2015-04-27 | 2015-04-27 | Worm type of reduction gearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261856.4U CN204572928U (en) | 2015-04-27 | 2015-04-27 | Worm type of reduction gearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572928U true CN204572928U (en) | 2015-08-19 |
Family
ID=53865569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520261856.4U Active CN204572928U (en) | 2015-04-27 | 2015-04-27 | Worm type of reduction gearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204572928U (en) |
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2015
- 2015-04-27 CN CN201520261856.4U patent/CN204572928U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |