CN204572996U - Worm-gear speed reducer - Google Patents
Worm-gear speed reducer Download PDFInfo
- Publication number
- CN204572996U CN204572996U CN201520260085.7U CN201520260085U CN204572996U CN 204572996 U CN204572996 U CN 204572996U CN 201520260085 U CN201520260085 U CN 201520260085U CN 204572996 U CN204572996 U CN 204572996U
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- worm
- gear
- spindle nose
- gear ring
- wheel shaft
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Abstract
The utility model discloses a kind of worm-gear speed reducer, 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-wheel shaft is rotatably connected on casing, described worm-wheel shaft has been wholely set spindle nose, described worm gear gear ring is engaged on spindle nose, the fitting surface of described worm gear gear ring and spindle nose is plane of inclination, described worm gear gear ring end face is provided with and holds down assembly, described in hold down assembly compress described worm gear gear ring on described plane of inclination.The program arranges worm-wheel shaft and worm gear gear ring by split, and the overload mechanical resistance of output terminal is broken on both fitting surfaces, protection motor.
Description
Technical field
The utility model relates to a kind of worm-gear speed reducer, belongs to speed reducer field.
Background technique
Worm-gear speed reducer 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-gear speed reducer 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-gear speed reducer 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.
Model utility content
The purpose of this utility model is to provide a kind of worm-gear speed reducer, arranges worm-wheel shaft and worm gear gear ring by split, and the overload mechanical resistance of output terminal is broken on both fitting surfaces, protection motor.
In order to achieve the above object, the technical solution adopted in the utility model is as follows: a kind of worm-gear speed reducer, 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-wheel shaft is rotatably connected on casing, described worm-wheel shaft has been wholely set spindle nose, described worm gear gear ring is engaged on spindle nose, the fitting surface of described worm gear gear ring and spindle nose is plane of inclination, described worm gear gear ring end face is provided with and holds down assembly, described in hold down assembly compress described worm gear gear ring on described plane of inclination.
Preferably, described in hold down assembly and comprise spring seat, belleville spring, described spring seat and belleville spring are set on described worm-wheel shaft respectively, and described spring seat is conflicted on worm gear gear ring, and described belleville spring is pressed on spring seat.
Preferably, locating stud is provided with between described spring seat and described spindle nose.
Preferably, the worm-wheel shaft of described spindle nose both sides is arranged with respectively the first deep groove ball bearing and the second deep groove ball bearing, described first deep groove ball bearing is fixed on described casing, described second deep groove ball bearing and described spring seat are positioned at the same side of spindle nose, described belleville spring side is pressed on described spring seat, and described belleville spring opposite side is pressed on described second deep groove ball bearing.
By adopting technique scheme, a worm gear gear ring that holds down assembly is pressed on plane of inclination, the power of worm screw is by engaging transmission of power to worm gear gear ring, the plane of inclination that worm gear gear ring coordinates with spindle nose is synchronous axial system under normal load condition, and the stiction now on both fitting surfaces is greater than both driving forces in relative rotation.When output terminal transships, hold down assembly and provide stiction to be on a mating less than worm gear gear ring and spindle nose driving force in relative rotation, skid, now the rotating speed of worm gear gear ring is greater than the rotating speed (spindle nose possibility rotating speed is zero) of spindle nose.
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.
Reference character: 1, casing; 2, worm screw; 3, worm gear; 3a, worm-wheel shaft; 3b, worm gear gear ring; 4, spindle nose; 5, spring seat; 6, belleville spring; 7, the second deep groove ball bearing; 8, locating stud; 9, the first deep groove ball bearing; 10, jump-ring slot.
Embodiment
A kind of worm gear 3 worm screw 2 speed reducer, comprise casing 1, the worm gear 3 and worm screw 2 that cooperatively interact is provided with in casing 1, worm gear 3 comprise split arrange worm-wheel shaft 3a and worm gear gear ring 3b, worm-wheel shaft 3a be rotatably connected on casing 1, worm-wheel shaft 3a has been wholely set spindle nose 4, worm gear gear ring 3b is engaged on spindle nose 4, the fitting surface of worm gear gear ring 3b and spindle nose 4 is plane of inclination, and worm gear gear ring 3b end face is provided with and holds down assembly, and holds down assembly and compresses worm gear gear ring 3b on plane of inclination.A worm gear gear ring 3b that holds down assembly is pressed on plane of inclination, the power of worm screw 2 is by engaging transmission of power to worm gear gear ring 3b, the plane of inclination that worm gear gear ring 3b coordinates with spindle nose 4 synchronous axial system under normal load condition, the stiction now on both fitting surfaces is greater than both driving forces in relative rotation.When output terminal transships, hold down assembly and provide stiction to be on a mating less than worm gear gear ring 3b and spindle nose 4 driving force in relative rotation, skid, now the rotating speed of worm gear gear ring 3b is greater than the rotating speed (spindle nose 4 possibility rotating speed is zero) of spindle nose 4.
Wherein, hold down assembly and comprise spring seat 5, belleville spring 6, spring seat 5 and belleville spring 6 are set on worm-wheel shaft 3a respectively, and spring seat 5 is conflicted on worm gear gear ring 3b, and belleville spring 6 is pressed on spring seat 5.Elastomeric spring has that volume is little, load is large, combinationally use the characteristics such as convenient, there is load concentration simultaneously transmit a little, belleville spring 6 passes to worm gear gear ring 3b by spring seat 5 impacting force, and worm gear gear ring 3b and spindle nose 4 are closely cooperated transferring power.
Wherein, locating stud 8 is provided with between spring seat 5 and spindle nose 4.Locating stud 8 is set and can ensures that spring seat 5 and spindle nose 4 realize synchronous axial system.
Wherein, the worm-wheel shaft 3a of spindle nose 4 both sides is arranged with respectively the first deep groove ball bearing 9 and the second deep groove ball bearing 7, first deep groove ball bearing 9 is fixed on casing 1, second deep groove ball bearing 7 and spring seat 5 are positioned at the same side of spindle nose 4, belleville spring 6 side is pressed on spring seat 5, and belleville spring 6 opposite side is pressed on the second deep groove ball bearing 7.Belleville spring 6 both can provide the stiction of plane of inclination, can also realize the object of compression second deep groove ball bearing 7.And realize fixing owing to not having belleville spring 6 to compress just to need to arrange jump-ring slot 10 on casing 1 due to the first deep groove ball bearing 9.
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-gear speed reducer, 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-wheel shaft is rotatably connected on casing, described worm-wheel shaft has been wholely set spindle nose, described worm gear gear ring is engaged on spindle nose, the fitting surface of described worm gear gear ring and spindle nose is plane of inclination, described worm gear gear ring end face is provided with and holds down assembly, described in hold down assembly compress described worm gear gear ring on described plane of inclination.
2. worm-gear speed reducer according to claim 1, it is characterized in that: described in hold down assembly and comprise spring seat, belleville spring, described spring seat and belleville spring are set on described worm-wheel shaft respectively, and described spring seat is conflicted on worm gear gear ring, and described belleville spring is pressed on spring seat.
3. worm-gear speed reducer according to claim 2, is characterized in that: be provided with locating stud between described spring seat and described spindle nose.
4. worm-gear speed reducer according to claim 3, it is characterized in that: the worm-wheel shaft of described spindle nose both sides is arranged with respectively the first deep groove ball bearing and the second deep groove ball bearing, described first deep groove ball bearing is fixed on described casing, described second deep groove ball bearing and described spring seat are positioned at the same side of spindle nose, described belleville spring side is pressed on described spring seat, and described belleville spring opposite side is pressed on described second deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520260085.7U CN204572996U (en) | 2015-04-27 | 2015-04-27 | Worm-gear speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520260085.7U CN204572996U (en) | 2015-04-27 | 2015-04-27 | Worm-gear speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572996U true CN204572996U (en) | 2015-08-19 |
Family
ID=53865637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520260085.7U Active CN204572996U (en) | 2015-04-27 | 2015-04-27 | Worm-gear speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204572996U (en) |
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2015
- 2015-04-27 CN CN201520260085.7U patent/CN204572996U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |