CN203836137U - Gear - Google Patents
Gear Download PDFInfo
- Publication number
- CN203836137U CN203836137U CN201420242072.2U CN201420242072U CN203836137U CN 203836137 U CN203836137 U CN 203836137U CN 201420242072 U CN201420242072 U CN 201420242072U CN 203836137 U CN203836137 U CN 203836137U
- Authority
- CN
- China
- Prior art keywords
- gear
- fixing part
- gear ring
- friction disk
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a gear which comprises a gear ring part with gear teeth and a fixing part fixed to a shaft. The fixing part comprises a hub core arranged on the shaft in a sleeved mode, a rolling component is arranged between the gear ring part and the fixing part, an axial fixed threaded hole is formed in the fixing part, a threaded rod penetrates into the fixed threaded hole, a pinion is arranged at one end of the threaded rod, and the other end of the threaded rod is connected with an annular friction disk; the hub core is sleeved with the annular friction disk, the annular friction disk tightly abuts against the end face of the gear ring part and is provided with a movable threaded hole matched with the threaded rod, and the spiral direction of the fixed threaded hole is opposite to that of the movable threaded hole; the gear ring part is provided with an annular main gear meshed with the pinion. When a machine breaks down due to overload, transmission between a gear ring and the shaft can be shut off, and the situation that a power device is damaged due to overload in the transmission process is prevented.
Description
Technical field
The utility model relates to a kind of component of machine, and more particularly, it relates to a kind of gear.
Background technique
Gear transmission is the mechanical transmission of utilizing the intermeshing transferring power of the gear teeth of two gears and motion.Gear transmission refers to uses the device that the driven wheel gear teeth are direct, transmit motion and power.In all mechanical transmission, gear transmission is most widely used, can be used to transmit motion and the power between the not far diaxon of relative position;
Gear-driven feature is included in conventional mechanical transmission, and with gear-driven efficiency, for the highest, closed-type cylindrical gearing efficiency is 96% ~ 99%, and this has very large economic implications to high-power transmission; Compact structure is less than the bulk of being with, chain transmission is required; Velocity ratio stable drive is than the stable basic demand to transmission performance often; Gear transmission obtains extensive use, just because of it, has this feature; Reliable operation, life-span be long manufacture and design hold water, gear transmission that working service is good, work very reliable, the life-span is ten or twenty year, this is also that other mechanical transmission can not be compared; This is particularly important to vehicle and the machine of working in mine;
But gear can cause greatly power plant overlond running because a variety of causes such as fault of component are led stuck or transmission resistance in transmission process, the direct like this machine medium power device overload that can cause is damaged, burn-down of electric motor for example, motor damages, and power plant are as the heart of machine, maintain and replace cost is very expensive.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of gear, when breaking down overload, can cut off the transmission between gear ring and axle, prevents power plant and damage because of overload in transmission process.
For achieving the above object, the utility model provides following technological scheme: a kind of gear, comprise be provided with the gear teeth gear ring portion and with the fixing fixing part of axle, fixing part comprises the hub core being set on axle, between described gear ring portion and fixing part, be provided with rolling member, described fixing part is provided with the axial tapped hole of determining, determine to be equipped with in tapped hole screw rod, one end of screw rod arranges small gear, the screw rod the other end is connected with annular friction dish, annular friction dish is set on hub core, annular friction dish and gear ring end surface are closely conflicted, annular friction dish is provided with the moving tapped hole coordinating with screw rod, it is described that to determine tapped hole contrary with the Hand of spiral of moving tapped hole, described gear ring portion is provided with the annular bull gear with small gear engagement.
By adopting technique scheme, between gear ring portion and fixing part, pass through friction disk friction driving, moving tapped hole on friction disk is contrary with the hand of thread spiral of determining between tapped hole on fixing part, can the rotation by screw rod realize mutually near and mutually away from, the in the situation that of normal operation, friction disk compresses by screw rod and gear ring end surface, by friction, transmit the moment of torsion in gear ring portion, by gear ring portion, drive fixing part jointly to rotate, and overload time, moment of torsion can increase, until moment of torsion overcomes the maximum friction moment of torsion between friction disk and gear ring portion, owing to being provided with rolling member between gear ring portion and fixing part, therefore between gear ring portion and fixing part, there is relative movement, there is relative engagement with the gearwheel in gear ring portion in the small gear on screw rod now, and drive shaft rod is around self axis rotation, make screw thread and the moving screw thread of determining on screw thread and friction disk on fixing part on screw rod intermeshing, make between fixing part and friction disk mutually away from, simultaneously the relative gear ring of friction disk portion relatively away from, now due to the rolling member arranging between gear ring portion and fixing part, therefore the moment of torsion transmission between gear ring portion and fixing part is zero, in the situation that breaking down, can not make power plant overlond running, protection power plant, thereby saved the expense of maintain and replace, wherein the Maximum Torque of gear ring portion and fixing part transmission can regulate by controlling the pretightening force of screw rod, when gear dispatches from the factory, can test under the condition of various pretightening forces, gear can transmission Maximum Torque, thereby to reference of user.
The utility model is further set to: described rolling member comprises outer ring and the rolling bearing that gear ring portion is fixedly connected with, inner ring is fixedly connected with fixing part.
By adopting technique scheme, rolling bearing frictional force in the process of operation is little, and the component of machine that right and wrong are usually shown in, manufacturing process is ripe, can be according to the rolling bearing of the gear size buying different size of producing in the process of producing the utility model gear.
The utility model is further set to: described friction disk comprises the friction plate with gear ring end surface frictional fit, on described friction disk, be equipped with the thread bush that drives screw thread, between thread bush and friction disk, be provided with spline, described thread bush two ends are provided with the axial limiting mechanism coordinating with friction disk end face respectively.
By adopting technique scheme, owing to fixing by screw rod and fixing part between fixing part and friction disk, friction disk only need to arrange the friction plate coordinating with gear ring portion, moving screw thread is arranged on thread bush, can make to send out and open manufacture between thread bush and friction disk, spline is used for limiting thread bush and rotates in a circumferential direction around self axis, and can endwisely slip; Axial limiting mechanism is for limiting the axial sliding stroke of thread bush.
The utility model is further set to: described axial limiting mechanism comprises the spring of conflicting away from the end face of fixing part with friction disk, and described spring is fixedly connected with thread bush.
By adopting technique scheme, spring is set, the convenient pressure of adjusting friction plate and gear ring portion, adjustment and the setting of conveniently moment of torsion.
The utility model is further set to: described position-limit mechanism also comprises the limiting stopper of conflicting near fixing part end face with friction disk, and described fixing part is provided with the groove that holds thread bush.
By adopting technique scheme, increase the sliding stroke of thread bush, thereby make spring have more extending amount, to meet different torque setting.
The utility model is further set to: described small gear and screw rod removably connect, and small gear is provided with hexagonal hole, establishes with hexagonal hole to adaptive projection on described screw rod.
By adopting technique scheme, in bolt rod driving friction disk and gear ring portion process mutual close and that compress, because the frictional force between friction plate and gear ring portion constantly increases, between gear ring portion and fixing part, counterrotating resistance can increase, small gear is detachably avoided between small gear and gearwheel due to intermeshing, and hamper screwing of screw rod, when the pretightening force of screw rod reaches after requirement, small gear is enclosed within on screw rod; When hexagonal projection facilitates small gear dismounting simultaneously, also facilitate and screw with spanner.
The utility model is further set to: described rolling bearing is roller bearing.
By adopting technique scheme, rolling bearing can have higher radially bearing capacity, thereby improves the radially bearing capacity of the utility model gear.
Accompanying drawing explanation
Fig. 1 is the embodiment's of the utility model gear structural representation;
Fig. 2 is the utility model gear embodiment's partial enlarged drawing;
Fig. 3 is the utility model gear embodiment's front view.
Reference character: 1, gear ring portion; 11, the gear teeth; 2, fixing part; 21, hub core; 3, screw rod; 31, projection; 4, friction disk; 41, friction plate; 42, thread bush; 43, spring; 44, limiting stopper; 5, rolling member; 51, outer ring; 52, inner ring; 6, gearwheel; 7, small gear.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model gear embodiment is described further.
A kind of gear, comprise be provided with the gear teeth 11 gear ring portion 1 and with the fixing fixing part 2 of axle, fixing part 2 comprises the hub core 21 being set on axle, between described gear ring portion 1 and fixing part 2, be provided with roller bearing, described fixing part 2 is provided with the axial tapped hole of determining, determine to be equipped with in tapped hole screw rod 3, one end of screw rod 3 is provided with Hexagon projection 31, on Hexagon projection 31, be arranged with small gear 6, screw rod 3 the other ends are connected with annular friction dish 4, annular friction dish 4 is set on hub core 21, annular friction dish 4 is closely conflicted with gear ring portion 1 end face, on friction disk 4, be equipped with the thread bush 42 that drives screw thread, between thread bush 42 and friction disk 4, be provided with spline, thread bush 42 is provided with the spring 43 of conflicting with friction disk 4 end faces away from one end of fixing part 2, the other end is provided with limiting stopper 44, on fixing part 2, there is the groove of accommodating limiting stopper 44, it is described that to determine tapped hole contrary with the Hand of spiral of moving tapped hole, described gear ring portion 1 is provided with the annular bull gear 6 with small gear 6 engagements.
By adopting technique scheme, between gear ring portion 1 and fixing part 2, pass through friction disk 4 friction driving, moving tapped hole on friction disk 4 is contrary with the hand of thread spiral of determining between tapped hole on fixing part 2, can the rotation by screw rod 3 realize mutually near and mutually away from, the in the situation that of normal operation, friction disk 4 compresses by screw rod 3 and gear ring portion 1 end face, by friction, transmit the moment of torsion in gear ring portion 1, by gear ring portion 1, drive fixing part 2 jointly to rotate, and overload time, moment of torsion can increase, until moment of torsion overcomes the maximum friction moment of torsion between friction disk 4 and gear ring portion 1, owing to being provided with rolling member 5 between gear ring portion 1 and fixing part 2, therefore between gear ring portion 1 and fixing part 2, there is relative movement, there is relative engagement with the gearwheel 6 in gear ring portion 1 in the small gear 6 on screw rod 3 now, and drive shaft rod is around self axis rotation, make screw thread and the moving screw thread of determining on screw thread and friction disk 4 on fixing part 2 on screw rod 3 intermeshing, make between fixing part 2 and friction disk 4 mutually away from, simultaneously the relative gear ring of friction disk 4 portion 1 relatively away from, now due to the rolling member 5 arranging between gear ring portion 1 and fixing part 2, therefore the moment of torsion transmission between gear ring portion 1 and fixing part 2 is zero, in the situation that breaking down, can not make power plant overlond running, protection power plant, thereby saved the expense of maintain and replace, wherein gear ring portion 1 can regulate by controlling the pretightening force of screw rod 3 with the Maximum Torque that fixing part 2 transmits, when gear dispatches from the factory, can test under the condition of various pretightening forces, gear can transmission Maximum Torque, thereby to reference of user.
Gear ring portion 1 also can directly adopt and be slidably matched with fixing part 2, the preferred roller bearing that adopts of this use, roller bearing outer ring 51 is fixing with gear ring portion 1, inner ring 52 is fixed with fixing part, roller bearing can have higher radially bearing capacity, thereby improve the radially bearing capacity of the utility model gear, and roller bearing frictional force in the process of operation is little, and be the component of machine that roller bearing right and wrong are usually shown in, manufacturing process is ripe, can be according to the roller bearing of the gear size buying different size of producing in the process of producing the utility model gear.
Due to fixing with fixing part 2 by screw rod 3 between fixing part 2 and friction disk 4,4 of friction disks need to arrange the friction plate 41 coordinating with gear ring portion 1, moving screw thread is arranged on thread bush 42, can make to send out and open manufacture between thread bush 42 and friction disk 4, spline is used for limiting thread bush 42 and rotates in a circumferential direction around self axis, and can endwisely slip; Axial limiting mechanism is for limiting the axial sliding stroke of thread bush 42.
Spring 43 is set, the convenient pressure of adjusting friction plate 41 and gear ring portion 1, adjustment and the setting of conveniently moment of torsion.
Fixing part 2 is provided with the groove that holds thread bush 42, increases the sliding stroke of thread bush 42, thereby makes spring 43 have more extending amount, to meet different torque setting.
When screw rod 3 drives in friction disk 4 and gear ring portion 1 process mutual close and that compress, because the frictional force between friction plate 41 and gear ring portion 1 constantly increases, between gear ring portion 1 and fixing part 2, counterrotating resistance can increase, small gear 6 is detachably avoided between small gear 6 and gearwheel 6 due to intermeshing, and hamper screwing of screw rod 3, when the pretightening force of screw rod 3 reaches after requirement, small gear 6 is enclosed within on screw rod 3; When hexagonal projection 31 facilitates small gear 6 dismounting simultaneously, also facilitate and screw with spanner.
Concrete, after overload protection, inspection machine; and fix a breakdown, need again screw screw rod 3, again make friction disk 4 and gear ring portion 1 close contact; when screwing screw rod 3, use torque spanner to operate; select appropriate pretightening force, thereby set the maximum driving torque that can protect power plant in gear transmission process, protection power plant; compare maintain and replace power plant; adopt the utility model gear, operation and maintenance is more simple, and cost is cheaper.
Claims (7)
1. a gear, comprise be provided with the gear teeth gear ring portion and with the fixing fixing part of axle, fixing part comprises the hub core being set on axle, it is characterized in that: between described gear ring portion and fixing part, be provided with rolling member, described fixing part is provided with the axial tapped hole of determining, determine to be equipped with in tapped hole screw rod, one end of screw rod arranges small gear, the screw rod the other end is connected with annular friction dish, annular friction dish is set on hub core, annular friction dish and gear ring end surface are closely conflicted, annular friction dish is provided with the moving tapped hole coordinating with screw rod, it is described that to determine tapped hole contrary with the Hand of spiral of moving tapped hole, described gear ring portion is provided with the annular bull gear with small gear engagement.
2. gear according to claim 1, is characterized in that: described rolling member comprises outer ring and the rolling bearing that gear ring portion is fixedly connected with, inner ring is fixedly connected with fixing part.
3. gear according to claim 2, it is characterized in that: described friction disk comprises the friction plate with gear ring end surface frictional fit, on described friction disk, be equipped with the thread bush that drives screw thread, between thread bush and friction disk, be provided with spline, described thread bush two ends are provided with the axial limiting mechanism coordinating with friction disk end face respectively.
4. gear according to claim 3, is characterized in that: described axial limiting mechanism comprises the spring of conflicting away from the end face of fixing part with friction disk, and described spring is fixedly connected with thread bush.
5. gear according to claim 4, is characterized in that: described position-limit mechanism also comprises the limiting stopper of conflicting near fixing part end face with friction disk, and described fixing part is provided with the groove that holds thread bush.
6. gear according to claim 5, is characterized in that: described small gear and screw rod removably connect, and small gear is provided with hexagonal hole, establishes with hexagonal hole to adaptive projection on described screw rod.
7. gear according to claim 6, is characterized in that: described rolling bearing is roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242072.2U CN203836137U (en) | 2014-05-13 | 2014-05-13 | Gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242072.2U CN203836137U (en) | 2014-05-13 | 2014-05-13 | Gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836137U true CN203836137U (en) | 2014-09-17 |
Family
ID=51513979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420242072.2U Expired - Fee Related CN203836137U (en) | 2014-05-13 | 2014-05-13 | Gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090438A (en) * | 2015-08-08 | 2015-11-25 | 常州市武进金城齿轮有限公司 | Buffering type noise reducing gear |
| CN110050136A (en) * | 2016-12-13 | 2019-07-23 | 舍弗勒技术股份两合公司 | Gear system with overload clutch and electric drive train |
-
2014
- 2014-05-13 CN CN201420242072.2U patent/CN203836137U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090438A (en) * | 2015-08-08 | 2015-11-25 | 常州市武进金城齿轮有限公司 | Buffering type noise reducing gear |
| CN110050136A (en) * | 2016-12-13 | 2019-07-23 | 舍弗勒技术股份两合公司 | Gear system with overload clutch and electric drive train |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20160513 |