CN110375035B - Torque-limiting speed reducer - Google Patents
Torque-limiting speed reducer Download PDFInfo
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- CN110375035B CN110375035B CN201910644795.2A CN201910644795A CN110375035B CN 110375035 B CN110375035 B CN 110375035B CN 201910644795 A CN201910644795 A CN 201910644795A CN 110375035 B CN110375035 B CN 110375035B
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- planet carrier
- gear
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 238000003825 pressing Methods 0.000 claims description 17
- 230000009467 reduction Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 239000003245 coal Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/2854—Toothed gearings for conveying rotary motion with gears having orbital motion involving conical gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a torque-limiting speed reducer, which comprises: the box, drive assembly and output subassembly. One end of the transmission component is connected with the output end of the motor, and the other end of the transmission component is connected with the sun gear to drive the sun gear to rotate. The friction torque limiting mechanism is positioned between the first supporting seat and the second supporting seat and respectively abuts against the outer wall of the first supporting seat and the inner wall of the second supporting seat. The friction force between the friction torque limiting mechanism and the first supporting seat and the second supporting seat is adjustable. The sun gear, the planet carrier and the inner gear ring form a planetary gear train, and when the first supporting seat and the second supporting seat are fixed relatively, the sun gear drives the planet carrier to rotate, and torque is output through the spline housing; when the first supporting seat and the second supporting seat slip, the planet carrier stops rotating, and the sun wheel drives the annular gear and the second supporting seat to rotate. The torque limiting speed reducer can realize the function of slip torque limiting when the faults such as blocking and the like occur, and plays a role in protection. After the working device is subjected to fault elimination, the working device can be put into production quickly without manual recovery, and the economic benefit is improved.
Description
Technical Field
The invention relates to the technical field of coal mine transportation, in particular to a moment-limiting speed reducer.
Background
The scraper conveyor is the main equipment of the fully-mechanized coal mining face, and pulls the scraper chain through the chain wheel assemblies positioned at the machine head and the machine tail to convey coal and materials in the groove. At present, the scraper conveyor is continuously developed in the high-power and long-distance direction, in the operation process of the scraper conveyor, the chain transmission polygonal effect and the coal blocks are successively dropped on the circular chain, so that the circular chain generates dynamic load or is blocked, when the output end is blocked, the motor is usually burnt out by the traditional speed reducer, or the tooth breakage of the speed reducer is directly caused, the production of a working surface is stopped, and the economic loss of a coal mine is further caused.
In the prior art, the torque limiter is generally arranged on the input shaft to perform torque limiting protection, so that the protection effect is poor, and the speed reducer and the chain cannot be effectively protected.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a torque-limiting speed reducer. The specific technical scheme is as follows:
a torque-limiting type speed reducer comprising: the box body, the transmission assembly and the output assembly; the output assembly includes: the device comprises a shell, a first supporting seat, a second supporting seat, a sun gear, an annular gear, a planet carrier, a spline housing and a friction torque limiting mechanism, wherein the first supporting seat, the second supporting seat, the sun gear, the annular gear, the planet carrier, the spline housing and the friction torque limiting mechanism are arranged in the shell; the shell is connected with the box body, the transmission assembly is positioned in the box body, one end of the transmission assembly is connected with the output end of the motor, and the other end of the transmission assembly is connected with the sun gear to drive the sun gear to rotate; the first supporting seat is fixed on the box body, the second supporting seat is arranged outside the first supporting seat in a surrounding mode, the friction torque limiting mechanism is located between the first supporting seat and the second supporting seat and respectively abuts against the outer wall of the first supporting seat and the inner wall of the second supporting seat, and the friction torque limiting mechanism is used for providing friction force transmission torque to enable the second supporting seat and the first supporting seat to be relatively fixed; the friction force between the friction torque limiting mechanism and the first support seat and the friction force between the friction torque limiting mechanism and the second support seat are adjustable; the inner gear ring is connected with the second supporting seat, and the planet carrier is connected with the spline housing; the sun gear, the planet carrier and the annular gear form a planetary gear train, and when the first supporting seat and the second supporting seat are relatively fixed, the sun gear drives the planet carrier to rotate and outputs torque through the spline housing; when the first supporting seat and the second supporting seat slip, the planet carrier stops rotating, and the sun wheel drives the annular gear and the second supporting seat to rotate.
In one possible design, the friction torque limiting mechanism includes a wear sleeve sleeved on the first support base and an expansion member surrounding the wear sleeve for providing a radial force to generate friction.
In one possible design, the expansion member is an expansion shell.
In one possible design, the expansion member is a high pressure oil bladder.
In one possible design, the inner wall of the wear sleeve is provided with a helical oil groove.
In one possible design, the transmission assembly includes a first transmission shaft, a second transmission shaft and a third transmission shaft, one end of the first transmission shaft is connected with the motor output shaft, the other end is connected with one end of the second transmission shaft through a meshed bevel gear, and the second transmission shaft is connected with the third transmission shaft through a meshed spur gear.
In one possible design, the torque limiting speed reducer further includes a pressing plate, the inner side of the pressing plate is connected with the first supporting seat, the outer side of the pressing plate is opposite to the second supporting seat, a wear-resisting pad is arranged between the outer side of the pressing plate and the second supporting seat, the first supporting seat, the second supporting seat, the pressing plate and the wear-resisting pad are matched to form a sealed accommodating cavity, and the friction torque limiting mechanism is located in the accommodating cavity.
In one possible design, a bearing is provided between the planet carrier and the housing.
In one possible design, the torque-limiting speed reducer further comprises a first floating seal seat and a second floating seal seat, wherein the inner side of the first floating seal seat is connected with the end face of the planet carrier, the first floating seal seat and the second floating seal seat are connected and sealed through a floating oil seal, the outer side of the second floating seal seat is connected with the end face of the shell, and the second floating seal seat is propped against the end face of the bearing.
In one possible design, the inner side of the pressure plate is connected with the first supporting seat through bolts; and/or the inner side of the first floating seal seat is connected with the end face of the planet carrier through bolts; and/or the outer side of the second floating seal seat is connected with the end face of the shell through bolts.
The technical scheme of the invention has the main advantages that:
according to the torque limiting speed reducer, the second supporting seat and the first supporting seat are relatively fixed through friction force provided by the friction torque limiting mechanism, so that torque transmission under a normal working state can be ensured, a slip torque limiting function can be realized when faults such as blocking occur, a motor, a transmission device or a working device are protected, and the reliability of the whole machine is improved. Through adjusting the frictional force of friction limit moment mechanism, can satisfy the user demand of different scenes, application scope is wider. Because the friction torque limiting mechanism is not easy to damage in the skidding process, the working device can be put into production quickly without manual recovery after fault elimination, and the economic benefit is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and without limitation to the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a torque-limiting speed reducer according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an output assembly of a torque-limiting type speed reducer according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a friction torque limiting mechanism in a torque limiting type speed reducer according to an embodiment of the present invention;
FIG. 4-1 is a cross-sectional view of a first support seat in a torque limiter according to one embodiment of the present invention;
fig. 4-2 is a front view of a first support seat in a torque limiter according to an embodiment of the present invention;
FIG. 5-1 is a cross-sectional view of a second support seat in a torque limiter according to one embodiment of the present invention;
fig. 5-2 is a front view of a second support seat in a torque limiter according to an embodiment of the present invention;
FIG. 6-1 is a cross-sectional view of a platen in a torque-limiting speed reducer provided by one embodiment of the present invention;
fig. 6-2 is a front view of a platen in a torque-limiting decelerator provided in an embodiment of the present invention.
Reference numerals illustrate:
the device comprises an I-transmission component, a II-output component, a 1-box body, a 2-shell, a 3-first supporting seat, a 4-second supporting seat, a 5-sun gear, a 6-annular gear, a 7-planet carrier, an 8-spline housing, a 9-friction torque limiting mechanism, a 91-wear-resistant housing, a 92-expansion piece, a 10-first transmission shaft, a 11-second transmission shaft, a 12-third transmission shaft, a 13-pressing plate, a 14-wear-resistant pad, a 15-bearing, a 16-first floating seal seat and a 17-second floating seal seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes in detail the technical scheme provided by the embodiment of the invention with reference to the accompanying drawings.
The embodiment of the invention provides a moment-limiting speed reducer, as shown in fig. 1 and 2, comprising: the box 1, drive assembly I and output subassembly II. The output assembly II comprises: the planet carrier comprises a shell 2, a first supporting seat 3, a second supporting seat 4, a sun gear 5, an inner gear ring 6, a planet carrier 7, a spline housing 8 and a friction torque limiting mechanism 9 which are arranged in the shell 2. The shell 2 is connected with the box 1, the transmission component I is positioned in the box 1, one end of the transmission component I is connected with the output end of the motor, and the other end of the transmission component I is connected with the sun gear 5 to drive the sun gear 5 to rotate. The first supporting seat 3 is fixed on the box body 1, the second supporting seat 4 is arranged outside the first supporting seat 3 in a surrounding mode, the friction torque limiting mechanism 9 is located between the first supporting seat 3 and the second supporting seat 4 and respectively abuts against the outer wall of the first supporting seat 3 and the inner wall of the second supporting seat 4, and the friction torque limiting mechanism is used for providing friction force transmission torque to enable the second supporting seat 4 to be fixed relative to the first supporting seat 3; the friction force between the friction torque limiting mechanism 9 and the first support seat 3 and the second support seat 4 is adjustable. The inner gear ring 6 is connected with the second supporting seat 4, and the planet carrier 7 is connected with the spline housing 8. The sun gear 5, the planet carrier 7 and the inner gear ring 6 form a planetary gear train, and when the first supporting seat 3 and the second supporting seat 4 are fixed relatively, the sun gear 5 drives the planet carrier 7 to rotate, and torque is output through the spline housing 8; when the first supporting seat 3 and the second supporting seat 4 slip, the planet carrier 7 stops rotating, and the sun gear 5 drives the annular gear 6 and the second supporting seat 4 to rotate.
The working principle of the torque-limiting speed reducer provided by the embodiment of the invention is described below:
when the planetary gear train is used, the transmission assembly I is connected with the output shaft of the motor, the output torque of the motor drives the sun gear 5 to rotate through the transmission assembly I, the sun gear 5, the planet carrier 7 and the inner gear ring 6 form the planetary gear train, and it is understood that the planet carrier 7 is sleeved with planet gears, and the planet gears are positioned between the planet carrier 7 and the inner gear ring 6 and meshed with the sun gear 5 and the inner gear ring 6 respectively. When the inner gear ring 6 is fixed, the sun gear 5 rotates, and the planet gears are driven to rotate and revolve along the sun gear 5, so that the planet carrier 7 is driven to rotate. When the planet carrier 7 cannot rotate, the sun gear 5 drives the planet gears to rotate when rotating, so that the inner gear ring 6 rotates. Based on the above, the first support base 3 and the second support base 4 are linked by the frictional force of the friction torque limiter mechanism 9, and the maximum torque that can be transmitted by the frictional force is the slip torque. When the impact moment between the first supporting seat 3 and the second supporting seat 4 is smaller than the slip moment, the second supporting seat 4 is fixed, namely, the inner gear ring 6 is fixed, the sun gear 5 drives the planet carrier 7 to rotate, and the moment is output outwards through the spline housing 8, so that the planetary gear is in a normal working state. When the blocking phenomenon occurs, the planet carrier 7 and the spline housing 8 cannot rotate, the impact moment between the second support seat 4 and the first support seat 3 is increased, and when the impact moment is greater than or equal to the slip moment, the second support seat 4 and the first support seat 3 slip relatively, and at the moment, the sun wheel 5 drives the inner gear ring 6 and the second support seat 4 to rotate through the planet wheel. Through setting the moment of skidding to slightly be greater than the moment of torsion under the normal operating condition (for example, can be 3 times under the normal operating condition), can guarantee the moment of torsion transmission under the normal operating condition, can take place to skid when the phenomenon such as dead in the emergence card again, avoid producing great moment and lead to motor and/or working arrangement to damage, improve production security performance. And the friction torque limiting mechanism 9 can not be damaged in the skidding process, and the working device can be normally put into use without manual recovery after the working device is subjected to fault elimination. Further, as the friction force between the friction torque limiting mechanism 9 and the first supporting seat 3 and the second supporting seat 4 is adjustable, different friction forces correspond to different slip moments, the torque limiting use requirements of different scenes can be met, and the application range is wider.
Therefore, according to the torque limiting speed reducer provided by the embodiment of the invention, the second supporting seat 4 and the first supporting seat 3 are relatively fixed by the friction force provided by the friction torque limiting mechanism 9, so that torque transmission in a normal working state can be ensured, a slip torque limiting function can be realized when faults such as blocking occur, a motor, a transmission device or a working device are protected, and the reliability of the whole machine is improved. Through adjusting the frictional force of friction limit mechanism 9, can satisfy the user demand of different scenes, application scope is wider. Because friction limit moment mechanism 9 is not fragile at the in-process of skidding, work device trouble-shooting back need not manual work and resumes and put into production fast, improves economic benefits.
The reduction gear ratio of the reducer can be set by the gear ratio in the transmission component I and the gear ratio in the planetary gear train, which are known technical means by those skilled in the art, and are not described in detail in the embodiment of the present invention.
Optionally, in the torque limiting reducer provided by the embodiment of the invention, the friction torque limiting mechanism 9 includes a wear-resistant sleeve 91 and an expansion member 92, the wear-resistant sleeve 91 is sleeved on the first supporting seat 3, and the expansion member 92 is surrounded on the wear-resistant sleeve 91, so as to provide radial force to generate friction force. So arranged, the magnitude of the radial force is controlled by the degree of expansion of the expansion member 92, so that the frictional force between the friction torque limiting mechanism 9 and the first and second support seats 3 and 4 is adjustable. By arranging the wear-resistant sleeve 91, the wear of the expansion piece 92 is avoided, the service life is prolonged, and the use reliability is improved.
The structure of the expansion member 92 is exemplified as follows:
as an example, the expansion member 92 may be an expansion sleeve, and the slip moment is set by adjusting the magnitude of the expansion force with the expansion force of the expansion sleeve as the radial force.
When the expansion force is adjusted, the extrusion degree of the expansion sleeve can be controlled by filling expansion sleeves with different volumes between the wear-resistant sleeve 91 and the second supporting seat 4, so that different expansion forces are achieved; or, the expansion sleeve can be fixed on the end face of the first supporting seat 3 through bolts arranged along the axial direction, and different expansion forces are obtained by compressing the expansion sleeve to different degrees through rotating the bolts.
Alternatively, the expansion shell may comprise two outer rings, one inner ring and a tensioning bolt. The two outer rings are arranged on two sides of the inner ring, the inner ring and the outer ring are contacted through conical contact surfaces, and the two outer rings are connected through tensioning bolts. The distance between the two outer rings is shortened by tightening the bolts, so that the axial dimension of the expansion sleeve is reduced, the radial dimension is increased, and the purpose of tensioning is achieved.
As another example, the expansion member 92 may be a high pressure oil bladder filled with hydraulic oil for providing radial force. The radial force can be adjusted by controlling the quantity of hydraulic oil filled in the high-pressure oil bag, so that the slipping moment is set.
In the embodiment of the invention, the maximum friction pair specific pressure of the friction torque limiting mechanism 9 can reach 180MPa.
Optionally, in order to avoid heat accumulation generated during slipping, as shown in fig. 3, the inner wall of the wear sleeve 91 is provided with a spiral oil groove. So set up, lubricating oil can evenly flow through each position of wear-resisting cover 91 in the spiral oil groove, ensures that the heat that friction limit moment mechanism 9 produced can in time be taken away by lubricating oil when skidding, plays cooling and guard action, prolongs wear-resisting cover 91's life.
In the embodiment of the invention, the transmission assembly I is used for transmitting the torque of the motor output shaft to the sun gear 5 and has a deceleration function, and the transmission assembly I can be in various forms as long as the purposes of torque transmission and deceleration can be achieved. Illustratively, as shown in fig. 1, the transmission assembly I includes a first transmission shaft 10, a second transmission shaft 11, and a third transmission shaft 12, one end of the first transmission shaft 10 is connected to an output shaft of the motor, the other end is connected to one end of the second transmission shaft 11 through a meshed bevel gear, and the second transmission shaft 11 and the third transmission shaft 12 are connected through a meshed spur gear. So arranged, the first drive shaft 10 and the second drive shaft 11 are connected by the engaged bevel gears, the direction of torque can be changed, and the reduction gear ratio can be controlled by the gear ratio of the bevel gears. The second transmission shaft 11 and the third transmission shaft 12 are arranged in parallel, and are linked through meshed spur gears, so that the purpose of reducing speed and transmission is achieved.
Optionally, the torque limiting speed reducer provided by the embodiment of the invention further includes a pressing plate 13, the inner side of the pressing plate 13 is connected with the first supporting seat 3, the outer side of the pressing plate is opposite to the second supporting seat 4, a wear-resisting pad 14 is arranged between the outer side of the pressing plate 13 and the second supporting seat 4, the first supporting seat 3, the second supporting seat 4, the pressing plate 13 and the wear-resisting pad 14 are combined to form a sealed accommodating cavity, and the friction torque limiting mechanism 9 is located in the accommodating cavity. So set up, clamp plate 13 and wear pad 14 cooperate to enclose into sealed holding chamber, be convenient for hold the intracavity and fill lubricating oil and play the cooling effect to friction limit rectangular mechanism 9, and can protect friction limit rectangular mechanism 9, avoid taking place the striking or fall into foreign matter etc.. By adopting the wear-resistant pad 14 to be connected with the second supporting seat 4 for blocking, the blocking effect can be achieved, the rotation of the second supporting seat 4 can not be affected when slipping occurs, and the use effect is good. The schematic structure of the pressing plate 13 can be seen in fig. 6-1 and fig. 6-2.
Wherein, the wear pad 14 is a ring structure, the inner side of which can be provided with a through hole, and a bolt passes through the through hole to tightly press and fix the wear pad 14 on the outer side of the gland. The gland and the first supporting seat 3 can be connected through bolts, and the bolts penetrate through holes or screw holes on the inner side of the gland to be inserted into and fixed in the screw holes on the end face of the first supporting seat 3 in a threaded connection mode, so that the gland and the first supporting seat 3 are connected together.
In the embodiment of the invention, the planet carrier 7 drives the spline housing 8 to rotate to output torque outwards, and in order to facilitate the rotation of the planet carrier 7, a bearing 15 is arranged between the planet carrier 7 and the shell 2. By providing the bearing 15, the carrier 7 is axially positioned, the carrier 7 is prevented from eccentric rotation such as shaking deflection, and the frictional resistance between the carrier 7 and the housing 2 can be reduced.
Optionally, the torque limiting speed reducer provided by the embodiment of the invention further includes a first floating seal seat 16 and a second floating seal seat 17, wherein the inner side of the first floating seal seat 16 is connected with the end face of the planet carrier 7, the first floating seal seat 16 and the second floating seal seat 17 are connected and sealed through a floating oil seal, the outer side of the second floating seal seat 17 is connected with the end face of the shell 2, and the second floating seal seat 17 is abutted against the end face of the bearing 15.
The first floating seal seat 16 and the planet carrier 7 may be connected by a bolt, and the bolt passes through a through hole or a screw hole on the inner side of the first floating seal seat 16 and is inserted into and fixed in a screw hole on the planet carrier 7 in a threaded connection manner, so as to connect the first floating seal seat 16 and the planet carrier 7 together. The second floating seal seat 17 and the shell 2 can be connected through bolts, and the bolts pass through holes or screw holes on the outer side of the second floating seal seat 17 and are inserted into the screw holes on the end face of the shell 2 in a threaded connection mode to connect the second floating seal seat 17 with the connecting disc.
The first support base 3 is schematically shown in fig. 4-1 and fig. 4-2. The schematic structural diagram of the second supporting seat 4 can be seen in fig. 5-1 and fig. 5-2, and the bottom end of the second supporting seat 4 can be provided with a positioning annular groove, so that the auxiliary positioning during component installation is facilitated, and the whole structure of the speed reducer is compact.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In this context, "front", "rear", "left", "right", "upper" and "lower" are referred to with respect to the placement state shown in the drawings.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting thereof; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A torque-limiting type speed reducer, characterized by comprising: the box body (1), the transmission component (I) and the output component (II);
the output assembly (II) comprises: the device comprises a shell (2), a first supporting seat (3), a second supporting seat (4), a sun gear (5), an inner gear ring (6), a planet carrier (7), a spline housing (8) and a friction torque limiting mechanism (9) which are arranged in the shell (2);
the shell (2) is connected with the box body (1), the transmission assembly (I) is positioned in the box body (1), one end of the transmission assembly is connected with the output end of the motor, and the other end of the transmission assembly is connected with the sun gear (5) to drive the sun gear (5) to rotate;
the first supporting seat (3) is fixed on the box body (1), the second supporting seat (4) is arranged outside the first supporting seat (3) in a surrounding mode, the friction torque limiting mechanism (9) is located between the first supporting seat (3) and the second supporting seat (4) and respectively abuts against the outer wall of the first supporting seat (3) and the inner wall of the second supporting seat (4) to provide friction force transmission torque to enable the second supporting seat (4) to be fixed relative to the first supporting seat (3); the friction force between the friction torque limiting mechanism (9) and the first supporting seat (3) and the second supporting seat (4) is adjustable; the inner gear ring (6) is connected with the second supporting seat (4), and the planet carrier (7) is connected with the spline housing (8);
the sun gear (5), the planet carrier (7) and the inner gear ring (6) form a planetary gear train, and when the first supporting seat (3) and the second supporting seat (4) are relatively fixed, the sun gear (5) drives the planet carrier (7) to rotate, and torque is output through the spline housing (8); when the first supporting seat (3) and the second supporting seat (4) slip, the planet carrier (7) stops rotating, and the sun wheel (5) drives the annular gear (6) and the second supporting seat (4) to rotate;
the friction torque limiting mechanism (9) comprises a wear-resistant sleeve (91) and an expansion piece (92), the wear-resistant sleeve (91) is sleeved on the first supporting seat (3), the expansion piece (92) is arranged outside the wear-resistant sleeve (91) in a surrounding mode and is used for providing radial force to generate friction force, and the expansion piece (92) is an expansion sleeve or a high-pressure oil bag;
the torque limiting speed reducer further comprises a pressing plate (13), the inner side of the pressing plate (13) is connected with the first supporting seat (3), the outer side of the pressing plate is opposite to the second supporting seat (4), a wear-resisting pad (14) is arranged between the outer side of the pressing plate (13) and the second supporting seat (4), the first supporting seat (3), the second supporting seat (4), the pressing plate (13) and the wear-resisting pad (14) are matched and enclosed to form a sealed accommodating cavity, and the friction torque limiting mechanism (9) is located in the accommodating cavity;
the planet carrier (7) with be provided with bearing (15) between casing (2), and limit rectangular reduction gear still includes first floating seal seat (16) and second floating seal seat (17), the inboard of first floating seal seat (16) with the terminal surface of planet carrier (7) is connected, first floating seal seat (16) with seal through floating oil seal hookup and seal between second floating seal seat (17), the outside of second floating seal seat (17) with the terminal surface of casing (2) is connected, second floating seal seat (17) with the terminal surface of bearing (15) offsets.
2. The torque-limiting reducer according to claim 1, characterized in that the inner wall of the wear sleeve (91) is provided with a helical oil groove.
3. The torque-limiting speed reducer according to claim 1, characterized in that the transmission assembly (I) comprises a first transmission shaft (10), a second transmission shaft (11) and a third transmission shaft (12), one end of the first transmission shaft (10) is connected with an output shaft of the motor, the other end is connected with one end of the second transmission shaft (11) through a meshed bevel gear, and the second transmission shaft (11) and the third transmission shaft (12) are connected through a meshed spur gear.
4. A torque-limiting reducer according to claim 1, characterized in that the inner side of the pressure plate (13) is connected with the first support seat (3) by means of bolts; and/or the number of the groups of groups,
the inner side of the first floating seal seat (16) is connected with the end face of the planet carrier (7) through bolts; and/or the number of the groups of groups,
the outer side of the second floating seal seat (17) is connected with the end face of the shell (2) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910644795.2A CN110375035B (en) | 2019-07-17 | 2019-07-17 | Torque-limiting speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910644795.2A CN110375035B (en) | 2019-07-17 | 2019-07-17 | Torque-limiting speed reducer |
Publications (2)
| Publication Number | Publication Date |
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| CN110375035A CN110375035A (en) | 2019-10-25 |
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| CN111749998B (en) * | 2020-06-18 | 2022-03-04 | 中国煤炭科工集团太原研究院有限公司 | Transmission system of mining conveying part, moment limiting speed reducer of transmission system and control method of moment limiting speed reducer |
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| CN102927208A (en) * | 2012-11-20 | 2013-02-13 | 中传重型装备有限公司 | Cutting reducer for continuous miner |
| CN104747668A (en) * | 2015-04-13 | 2015-07-01 | 南京康尼精密机械有限公司 | Stepless variable transmission for differential speed regulation of planetary gears |
| CN206017465U (en) * | 2016-08-30 | 2017-03-15 | 浙江宇龙机械有限公司 | A kind of wear-resisting expansion set |
| CN206268384U (en) * | 2016-12-06 | 2017-06-20 | 六环传动（西安）科技有限公司 | A kind of robot and planetary reducer |
| CN206988373U (en) * | 2016-12-06 | 2018-02-09 | 六环传动（西安）科技有限公司 | A kind of robot and planetary reducer |
| CN108150611A (en) * | 2016-12-06 | 2018-06-12 | 六环传动（西安）科技有限公司 | A kind of robot and planetary reducer |
| CN210859723U (en) * | 2019-07-17 | 2020-06-26 | 山西煤矿机械制造股份有限公司 | Torque-limiting speed reducer |
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| CN102927208A (en) * | 2012-11-20 | 2013-02-13 | 中传重型装备有限公司 | Cutting reducer for continuous miner |
| CN104747668A (en) * | 2015-04-13 | 2015-07-01 | 南京康尼精密机械有限公司 | Stepless variable transmission for differential speed regulation of planetary gears |
| CN206017465U (en) * | 2016-08-30 | 2017-03-15 | 浙江宇龙机械有限公司 | A kind of wear-resisting expansion set |
| CN206268384U (en) * | 2016-12-06 | 2017-06-20 | 六环传动（西安）科技有限公司 | A kind of robot and planetary reducer |
| CN206988373U (en) * | 2016-12-06 | 2018-02-09 | 六环传动（西安）科技有限公司 | A kind of robot and planetary reducer |
| CN108150611A (en) * | 2016-12-06 | 2018-06-12 | 六环传动（西安）科技有限公司 | A kind of robot and planetary reducer |
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