CN203453428U - Speed reducer and engineering machine - Google Patents
Speed reducer and engineering machine Download PDFInfo
- Publication number
- CN203453428U CN203453428U CN201320492596.2U CN201320492596U CN203453428U CN 203453428 U CN203453428 U CN 203453428U CN 201320492596 U CN201320492596 U CN 201320492596U CN 203453428 U CN203453428 U CN 203453428U
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- speed reducer
- outer ring
- spline housing
- friction pair
- inner ring
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Abstract
The utility model discloses a speed reducer and an engineering machine. The speed reducer comprises an input shaft, an output shaft, a braking mechanism and a torque transmission mechanism, wherein the output shaft is connected with the input shaft through a spline housing; the braking mechanism comprises a braking support and an inner friction sheet; the braking support is arranged on the periphery of the spline housing, and is in key connection with the inner friction sheet; the torque transmission mechanism is arranged between the braking support and the spline housing; the torque transmission mechanism comprises an outer ring, an inner ring and a single-direction rotation control friction pair arranged between the outer ring and the inner ring; when the outer ring stops rotating, the single-direction rotation control friction pair is used for driving the inner ring to rotate only towards a first direction; when the outer ring rotates, the single-direction rotation control friction pair is used for driving the outer ring and the inner ring to rotate in the same direction; the outer ring is connected with the braking support through a first friction pair; the inner ring is connected with the spline housing through a second friction pair. During secondary hooking, the reverse rotation of the spline housing and the output shaft is locked under the action of the torque transmission mechanism, so that the probability of slippage in secondary hooking is lowered, and the safety and reliability of operation are improved.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of speed reducer and engineering machinery.
Background technique
Speed reducer is arranged between prime mover and working machine or actuator conventionally, plays coupling rotating speed and transmitting torque, and in engineering machinery, application is very extensive.Speed reducer generally includes: input shaft, output shaft and arrestment mechanism.Wherein, input shaft is for being connected with prime mover, and output shaft is connected with operation mechanism or actuator, between input shaft and output shaft, by spline housing, is connected; Arrestment mechanism for realizing the locking of spline housing when braking, particularly, arrestment mechanism can comprise Der Bremssattel and inner attrition piece etc., Der Bremssattel is fixedly connected with spline housing, and when needs are braked, inner attrition piece cannot rotate, and lock Der Bremssattel, the spline housing being now connected with Der Bremssattel is also locked, and correspondingly, output shaft stops operating.
Take and be applied to hoist as example, hoist is in hanging the process of carrying operation, and power is exported by speed reducer, and speed reducer drives elevator to rotate, and drives rope hoisting weight.Particularly, in uphill process, arrestment mechanism is opened, and inner attrition piece does not lock Der Bremssattel, with Der Bremssattel, together rotates, and input shaft passes to output shaft by moment of torsion; When rising to certain altitude and need to stop promoting, stop the power input of input shaft, and close arrestment mechanism, now inner attrition piece is locked and compress Der Bremssattel, and Der Bremssattel, spline housing and output shaft all stop operating; While again rising, when secondary hooks up, open prime mover (as motor) and arrestment mechanism.If now the inner attrition piece of arrestment mechanism has been removed the locking to Der Bremssattel, and the moment of torsion of prime mover does not rise to certain numerical value, weight will first move down, then along with the progressively foundation of Motor torque, suspend, finally again up move, this has just produced secondary and has hooked up and slip hook again.Take speed reducer motor as oblique-shaft type axial piston motor be example, secondary hooks up and slips the reason of hook and be specially: motor piston and cylinder body Spielpassung, but when pressure-acting, unavoidably there will be internal leakage; If handle main valve valve rod when little opening, the flow of output is less, when the flow of output cannot meet motor in let out while requiring, although system can be set up to the pressure that overcomes break, but cannot overcome load force, cause motor slowly to move downward under load gravity, produce secondary and hook up and slip hook phenomenon.
Therefore, the defect of existing speed reducer is easily to cause hoist easy hook phenomenon of slipping when secondary hooks up, and this not only easily causes the damage of hanging thing and equipment, also personal injury accident may occur.In addition, be applied to Other Engineering machinery, during as lift or bucket elevator, when motor has a power failure or breaks down, easily under the effect of load, reverse, affect the safety and reliability of operation.
Model utility content
In view of this, the utility model proposes a kind of difficult generation secondary and hook up and slip speed reducer and the engineering machinery of hook, extend thus suspender working life, improve the safety and reliability of operation.
The utility model provides a kind of speed reducer, comprising: input shaft; Output shaft, is connected by spline housing with described input shaft; Arrestment mechanism, comprises Der Bremssattel and inner attrition piece, and described Der Bremssattel is arranged at the periphery of described spline housing, is connected with described inner attrition piece key; Torque-transmitting mechanisms, be arranged between described Der Bremssattel and spline housing, described torque-transmitting mechanisms comprises outer ring, inner ring, and the one-way rotation being arranged between described outer ring and inner ring is controlled friction pair, when described outer ring stops operating, described one-way rotation is controlled friction pair can only rotate towards first direction described inner ring, and when described outer ring rotating, described one-way rotation is controlled friction pair and made described outer ring and inner ring rotating in same direction; Described outer ring is connected by the first friction pair with described Der Bremssattel, and described inner ring is connected by the second friction pair with described spline housing.
Further, described speed reducer also comprises deep groove ball bearing, and described deep groove ball bearing is arranged between described Der Bremssattel and described spline housing.
Further, the number of described deep groove ball bearing is two, is disposed radially respectively the two ends in described torque-transmitting mechanisms.
Further, between the outer ring of described deep groove ball bearing and described Der Bremssattel, be provided with radial location jump ring.
Further, described speed reducer also comprises housing, and described case cover is located at the periphery of described arrestment mechanism and described torque-transmitting mechanisms.
Further, described arrestment mechanism also comprises outside friction disc, and described outside friction disc is connected with described housing key.
Further, between described outside friction disc and described housing, pass through spline joint.
Further, between described Der Bremssattel and described inner attrition piece, pass through spline joint.
Accordingly, the utility model also provides a kind of engineering machinery, is provided with the retarder described in above-mentioned any one, and the input shaft of described retarder is connected with prime mover of described engineering machinery, and output shaft is connected with operation mechanism or actuator.
Further, described engineering machinery is hoist.
A kind of speed reducer that the utility model provides includes input shaft, output shaft, arrestment mechanism and torque-transmitting mechanisms.With respect to prior art, Der Bremssattel in the speed reducer that the utility model provides and spline housing are Split type structure, and between the two, set up torque-transmitting mechanisms, between outer ring and Der Bremssattel in this torque-transmitting mechanisms, and all by friction pair, connect between inner ring and spline housing, when the one-way rotation control friction pair between outer ring and inner ring can stop operating in outer ring, inner ring can only be rotated towards first direction, and when outer ring rotating, outer ring and inner ring rotating in same direction.Thus, by the direction that first direction is input shaft and output shaft forward is set, when lifting state is set simultaneously, inner attrition piece locks outer ring by Der Bremssattel, when realizing secondary and hooking up, in one-way rotation, control under the effect of friction pair, the reversion of spline housing and output shaft is by locking, therefore, even if now prime mover cannot provide enough large moment of torsion in time, output shaft can not rotate backward yet, reduce there is secondary and hook up and slip the probability of hook, prevent that suspender and equipment are damaged, improve the safety and reliability of operation.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
The partial cutaway schematic of the speed reducer that Fig. 1 provides for the utility model embodiment one.
Description of reference numerals:
1 output shaft 2 spline housings
3 torque-transmitting mechanisms 31 outer rings
32 one-way rotation are controlled friction pair 33 inner rings
4 Der Bremssattel 5 deep groove ball bearings
6 radial location jump ring 71 inner attrition pieces
72 outside friction disc 8 input shafts
9 housings
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the utility model can combine mutually.Below in conjunction with accompanying drawing, each preferred embodiment of the present utility model is described further.Hereinafter, radially all refer to the radial direction of input shaft and the output shaft of speed reducer.
The utility model embodiment one provides a kind of speed reducer, and as shown in Figure 1, this speed reducer comprises its part sectioned view:
Input shaft 8;
Arrestment mechanism, comprises Der Bremssattel 4 and inner attrition piece 71, and Der Bremssattel 4 is arranged at the periphery of above-mentioned spline housing 2, is connected with inner attrition piece 71 keys;
Torque-transmitting mechanisms 3, be arranged between above-mentioned Der Bremssattel 4 and spline housing 2, this torque-transmitting mechanisms 3 comprises outer ring 31, inner ring 33, and the one-way rotation being arranged between outer ring 31 and inner ring 33 is controlled friction pair 32, in outer ring, 31 when stop operating, this one-way rotation is controlled friction pair 32 can only rotate towards first direction inner ring 33, in outer ring, 31 when rotate, and this one-way rotation is controlled friction pair 32 and made outer ring 31 and inner ring 33 rotating in same directions;
In the speed reducer that the present embodiment provides, input shaft 8, for being connected with prime mover, as being connected with motor, is the input end of power.Output shaft 1, for being connected with working machine or actuator, is the output terminal of power.Between input shaft 8 and output shaft 1, by spline housing 2, be connected, by the spline housing 2 of certain forms is set, can realize input shaft 8 for the certain moment of torsion of output shaft 1 transmission.The concrete structure of above-mentioned input shaft 8, output shaft 1 and spline housing 2 can be same as the prior art, and the utility model does not hereby repeat.
Arrestment mechanism comprises Der Bremssattel 4 and inner attrition piece 71, and inner attrition piece 71 is with Der Bremssattel 4 for key is connected, and when arrestment mechanism is opened, inner attrition piece 71 together rotates with Der Bremssattel 4; When arrestment mechanism is closed, inner attrition piece 71 is fixed, and inner attrition piece 71 compresses Der Bremssattel 4 simultaneously, and Der Bremssattel 4 is locked, can not rotate.Between Der Bremssattel 4 and inner attrition piece 71, can pass through spline joint, this spline is specifically as follows rectangular spline, gradually bloom key or serration spline.
In above-mentioned arrestment mechanism and existing clutch, the difference of arrestment mechanism is: its Der Bremssattel 4 is Split type structure with spline housing 2, and is not directly connected between the two, and Der Bremssattel 4 is sheathed on the periphery of spline housing 2, is provided with torque-transmitting mechanisms 3 between the two.This torque-transmitting mechanisms 3 includes outer ring 31, inner ring 33 and one-way rotation and controls friction pair 32.Wherein, outer ring 31 is connected by the first friction pair with Der Bremssattel 4, and, under the effect of frictional force, Der Bremssattel 4 can be with outer ring 31 together to rotate, when Der Bremssattel 4 is locked, and again can be by outer ring 31 lockings; Inner ring 33 is connected by the second friction pair with spline housing 2, and, under the effect of frictional force, spline housing 2 can drive inner ring 33 together to rotate.
One-way rotation in this torque-transmitting mechanisms 3 is controlled friction pair 32 and is had following effect: when outer ring 31 stops operating, inner ring 33 can only rotate towards first direction; When rotate outer ring 31, outer ring 31 and inner ring 33 rotating in same directions.It is the direction of input shaft 8 and output shaft 1 forward that first direction is set, propradation in lifting, can make inner attrition piece 71 locking Der Bremssattels 4, Der Bremssattel 4 locks the outer ring 31 of torque-transmitting mechanisms 3 under the effect of the first friction pair, but in one-way rotation, control under the effect of friction pair 32, inner ring 33 still can forward rotation, and spline housing 2 still can drive output shaft 1 forward.When needs have stopped then, stop the power input of input shaft 8 ends.When secondary hooks up, when prime mover can not provide enough large moment of torsion in time, under the effect of load, output shaft 1 has reversion tendency, but due to one-way rotation control friction pair 32 now can only forward, reversion locking, so now output shaft 1 also cannot rotate backward, prevent secondary and hook up and slip hook.While transferring, remove the locking of 71 pairs of Der Bremssattels 4 of inner attrition piece, now inner attrition piece 71, torque-transmitting mechanisms 3, spline housing 2, input shaft 8 and output shaft 1 reverse jointly.Above-mentionedly to rotate controlling friction pair 32, can adopt the friction pair structure that realizes above-mentioned functions well known to those skilled in the art.
As shown in the above, torque-transmitting mechanisms 3 is mainly used in transmitting torque, in the power transmission process of input shaft 8 and output shaft 1, can produce radial force unavoidably.In order to prevent torque mechanism 3 to be subject to excessive radial force, be damaged, the speed reducer that the present embodiment provides also preferably includes deep groove ball bearing 5, and this deep groove ball bearing 5 is arranged between Der Bremssattel 4 and spline housing 2.Further, in the present embodiment, the number of deep groove ball bearing 5 is two, is radially arranged in respectively the two ends of torque-transmitting mechanisms 3.This deep groove ball bearing 5 plays absorption radial force, the effect of protection torque-transmitting mechanisms 3.In addition, deep groove ball bearing 5 is also played a supporting role to spline housing 2.In order to prevent that deep groove ball bearing 5 from play radially occurring, between the outer ring of this deep groove ball bearing 5 and Der Bremssattel 4, can also be provided with radial location jump ring 6.
Further, for the member to speed reducer inside, as arrestment mechanism and torque-transmitting mechanisms 3 etc. plays protection and dustproof effect, above-mentioned speed reducer also preferably includes housing 9, and this housing 9 covers at the periphery of arrestment mechanism and torque-transmitting mechanisms 3.
On this basis, above-mentioned arrestment mechanism also preferably includes outside friction disc 72, and this outside friction disc 72 is connected with housing 9 keys, is specifically as follows spline joint.In arrestment mechanism when braking,, under the effect of brake spring, outside friction disc 72 compresses inner attrition pieces 71, and inner attrition piece 71 is locked and cannot rotate, and inner attrition piece 71 compresses Der Bremssattels 4 and realizes braking simultaneously.
The working principle of the speed reducer that the present embodiment provides is as follows:
Propradation, closes arrestment mechanism, produces braking under inner attrition piece 71 and outside friction disc 72 actings in conjunction, locking Der Bremssattel 4, and under this effect, the outer ring 31 of Der Bremssattel 4, torque-transmitting mechanisms 3 all stops operating; Torsion pass transfer mechanism 33 still can forward, and the moment of torsion of input shaft 8 passes to output shaft 1 by spline housing 2;
While stopping, arrestment mechanism is still in closed condition, when the power input of input shaft 8 ends stops, the unpowered input of input shaft 8, in inner attrition piece 71, outside friction disc 72 and one-way rotation, control under friction pair 32 actings in conjunction, overcome load force, spline housing 2 and output shaft 1 are all stopped operating;
When secondary hooks up, arrestment mechanism is still in closed condition, when prime mover can not provide enough large moment of torsion in time, under the effect of load, output shaft 1 has reversion tendency, but in one-way rotation, controls under the effect of friction pair 32 reverse latch functions, output shaft 1 cannot reverse, it stops operating, until prime mover provides enough large moment of torsion, starts forward.
While transferring, open arrestment mechanism, inner attrition piece 71 does not produce braking, with Der Bremssattel 4, torque-transmitting mechanisms 3, spline housing 2, input shaft 8 and output shaft 1, together reverses.
As shown in the above, with respect to prior art, Der Bremssattel 4 in the speed reducer that the present embodiment provides and spline housing 2 are Split type structure, and between the two, set up torque-transmitting mechanisms 3, between outer ring 31 and Der Bremssattel 4 in this torque-transmitting mechanisms 3, between inner ring 33 and spline housing 2, all by friction pair, connect, one-way rotation between outer ring 31 and inner ring 33 is controlled friction pair 32 can be in outer ring 31 while stopping operating, inner ring 33 can only be rotated towards first direction, and in outer ring 31 while rotating, outer ring 31 and inner ring 33 rotating in same directions.Thus, by the direction that first direction is input shaft 8 and output shaft 1 forward is set, when lifting state is set simultaneously, inner attrition piece 71 is by Der Bremssattel 4 locking outer rings 31, when realizing secondary and hooking up, in one-way rotation, control under the effect of friction pair 32, the reversion of spline housing 2 and output shaft 1 is by locking, therefore, even if now prime mover cannot provide enough large moment of torsion in time, output shaft 1 can not rotate backward yet, prevent secondary and hook up and slip hook, prevent that suspender and equipment are damaged, improve the safety and reliability of operation.
The utility model is other embodiments also provide a kind of engineering machinery, hoist for example, and this project machinery is provided with above-mentioned any speed reducer, and the input shaft 8 of this speed reducer is connected with prime mover (as motor), and output shaft 1 is connected with operation mechanism or actuator.The hoist that is provided with this speed reducer of take is example, and the input shaft 8 of speed reducer can be connected with oil hydraulic motor, and output shaft 1 can be connected with planetary mechanism.
Because above-mentioned any speed reducer has above-mentioned technique effect, therefore, the engineering machinery that is provided with this speed reducer also has secondary and hooks up that to slip hook probability low, the reliable advantage of job safety.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a speed reducer, is characterized in that, comprising:
Input shaft (8);
Output shaft (1), is connected by spline housing (2) with described input shaft (8);
Arrestment mechanism, comprises Der Bremssattel (4) and inner attrition piece (71), and described Der Bremssattel (4) is arranged at the periphery of described spline housing (2), is connected with described inner attrition piece (71) key;
Torque-transmitting mechanisms (3), be arranged between described Der Bremssattel (4) and spline housing (2), described torque-transmitting mechanisms (3) comprises outer ring (31), inner ring (33), and the one-way rotation being arranged between described outer ring (31) and inner ring (33) is controlled friction pair (32), when described outer ring (31) stop operating, described one-way rotation is controlled friction pair (32) can only rotate towards first direction described inner ring (33), when rotate described outer ring (31), described one-way rotation is controlled friction pair (32) and is made described outer ring (31) and inner ring (33) rotating in same direction,
Described outer ring (31) is connected by the first friction pair with described Der Bremssattel (4), and described inner ring (33) is connected by the second friction pair with described spline housing (2).
2. speed reducer according to claim 1, is characterized in that, described speed reducer also comprises deep groove ball bearing (5), and described deep groove ball bearing (5) is arranged between described Der Bremssattel (4) and described spline housing (2).
3. speed reducer according to claim 2, is characterized in that, the number of described deep groove ball bearing (5) is two, is disposed radially respectively in the two ends of described torque-transmitting mechanisms (3).
4. speed reducer according to claim 2, is characterized in that, between the outer ring of described deep groove ball bearing (5) and described Der Bremssattel (4), is provided with radial location jump ring (6).
5. speed reducer according to claim 1, is characterized in that, described speed reducer also comprises housing (9), and described housing (9) covers at the periphery of described arrestment mechanism and described torque-transmitting mechanisms (3).
6. speed reducer according to claim 5, is characterized in that, described arrestment mechanism also comprises outside friction disc (72), and described outside friction disc (72) is connected with described housing (9) key.
7. speed reducer according to claim 6, is characterized in that, between described outside friction disc (72) and described housing (9), passes through spline joint.
8. according to the speed reducer described in claim 1 to 7 any one, it is characterized in that, between described Der Bremssattel (4) and described inner attrition piece (71), pass through spline joint.
9. an engineering machinery, is characterized in that, is provided with the retarder described in claim 1 to 8 any one, and the input shaft of described speed reducer (8) is connected with prime mover of described engineering machinery, and output shaft (1) is connected with operation mechanism or actuator.
10. engineering machinery according to claim 9, is characterized in that, described engineering machinery is hoist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492596.2U CN203453428U (en) | 2013-08-13 | 2013-08-13 | Speed reducer and engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492596.2U CN203453428U (en) | 2013-08-13 | 2013-08-13 | Speed reducer and engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453428U true CN203453428U (en) | 2014-02-26 |
Family
ID=50133303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320492596.2U Expired - Lifetime CN203453428U (en) | 2013-08-13 | 2013-08-13 | Speed reducer and engineering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453428U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963434A (en) * | 2019-12-31 | 2020-04-07 | 徐州科源液压股份有限公司 | Brake for lifting |
| CN113431894A (en) * | 2021-04-30 | 2021-09-24 | 金铂睿动力科技(无锡)有限公司 | Novel power head speed reducer input end |
-
2013
- 2013-08-13 CN CN201320492596.2U patent/CN203453428U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963434A (en) * | 2019-12-31 | 2020-04-07 | 徐州科源液压股份有限公司 | Brake for lifting |
| CN110963434B (en) * | 2019-12-31 | 2021-01-29 | 徐州科源液压股份有限公司 | Brake for lifting |
| CN113431894A (en) * | 2021-04-30 | 2021-09-24 | 金铂睿动力科技(无锡)有限公司 | Novel power head speed reducer input end |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |