CN117394607B - DC torque motor with jumping monitoring function - Google Patents
DC torque motor with jumping monitoring function Download PDFInfo
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- CN117394607B CN117394607B CN202311666752.7A CN202311666752A CN117394607B CN 117394607 B CN117394607 B CN 117394607B CN 202311666752 A CN202311666752 A CN 202311666752A CN 117394607 B CN117394607 B CN 117394607B
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- movable plug
- oil
- rotating shaft
- runout
- monitoring
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 53
- 230000009191 jumping Effects 0.000 title description 2
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 67
- 230000008859 change Effects 0.000 claims description 19
- 230000006698 induction Effects 0.000 claims description 19
- 239000010720 hydraulic oil Substances 0.000 claims description 10
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 238000010009 beating Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K26/00—Machines adapted to function as torque motors, i.e. to exert a torque when stalled
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
Abstract
The invention provides a direct current torque motor with a runout monitoring function, which relates to the technical field of motors, and comprises a runout monitoring mechanism for monitoring the condition of circular runout when a rotating shaft rotates, wherein the runout monitoring mechanism comprises: the rotating shaft axially penetrates through the annular sleeve; the arc-shaped plate is used for keeping contact with the rotating shaft, one side of the arc-shaped plate is fixed with a connecting rod, and the connecting rod is in sliding sealing connection with the annular sleeve; the first movable plug is fixed on the connecting rod and is in sliding sealing connection with the partition piece; the second movable plug is in sliding sealing connection with the side wall of the first cavity and is in transmission connection with the first movable plug; one end of the electric conductor is connected with the second movable plug; a magnet; an induced current monitoring component; an input current monitoring component; a processing assembly. When the magnitude of the induced current is increased to a preset range, the processing component timely gives out warning to related personnel through the warning component, so that the related personnel can take corresponding measures, and the situation that the rotation of the rotor is unstable is avoided.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a direct current torque motor with a runout monitoring function.
Background
The direct current torque motor is an energy conversion device which converts electric energy into kinetic energy of rotor rotation and outputs the kinetic energy to the outside, and after the direct current torque motor is used, the situation that the circle runout tolerance of the rotation shaft is increased due to the fact that the eccentric degree of the rotation shaft is too high easily occurs, so that the rotor rotation is unstable is caused.
Disclosure of Invention
Aiming at the situation, the invention provides the direct current torque motor with the runout monitoring function, which can monitor the circle runout condition of the rotation of the rotating shaft and send warning to related personnel in time so as to avoid the problem of unstable rotation of the rotor.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a direct current torque motor with a runout monitoring function, which comprises a shell component, a stator, a rotor, a bearing, a commutator, an electric brush, a rotary shaft, a runout monitoring mechanism for monitoring the condition of circle runout when the rotary shaft rotates, wherein the runout monitoring mechanism comprises:
an annular sleeve arranged in the shell, and the rotating shaft axially penetrates through the annular sleeve; the space between the inner layer and the outer layer of the annular sleeve is divided into a first cavity and a second cavity by a dividing piece;
the arc-shaped plate is used for keeping contact with the rotating shaft, one side of the arc-shaped plate is fixed with a connecting rod, and the connecting rod is in sliding sealing connection with the inner layer of the annular sleeve;
the first movable plug is fixed on the connecting rod and is in sliding sealing connection with the partition piece;
the second movable plug is in sliding sealing connection with the outer layer of the annular sleeve and is in transmission connection with the first movable plug; a tension spring is connected between the second movable plug and the partition piece;
one end of the electric conductor is in transmission connection with the second movable plug;
the magnet is arranged close to the conductor, and the conductor is used for cutting a magnetic induction line between two poles of the magnet;
the induction current monitoring component is connected with the conductor to form a closed loop, is used for monitoring induction current generated when the conductor cuts the magnetic induction wire, and sends change data of the induction current to the processing component;
the input current monitoring component is used for monitoring the change condition of the input current at the electric brush and sending the change data of the input current to the processing component;
and the processing component is used for sending out warning to related personnel through the warning component when the change data of the induction current and the change data of the input current meet preset conditions.
In some embodiments of the present invention, the first cavity is filled with hydraulic oil, and the second movable plug is in driving connection with the first movable plug through the hydraulic oil.
In some embodiments of the invention, both ends of the spindle are provided with runout monitoring mechanisms.
In some embodiments of the invention, the connecting rod is sleeved with a pressure spring, one end of the pressure spring is connected with the arc-shaped plate, and the other end of the pressure spring is connected with the inner layer of the annular sleeve.
In some embodiments of the invention, a plurality of arcuate plates are movably disposed along a radial direction of the annular sleeve and are capable of being co-spliced into an annular structure.
In some embodiments of the present invention, the processing component further includes a locking component, when the magnitude of the induced current increases to a preset range, the processing component makes the locking component push the electric conductor, so that the arc plate reacts on the rotating shaft, and the arc plates are spliced together to form a ring structure.
In some embodiments of the invention, the locking assembly includes a push rod and a driver, one end of the push rod being slidably coupled to the electrical conductor and capable of pushing the electrical conductor toward the shaft, the other end being coupled to an output end of the driver.
In some embodiments of the invention, the connecting rod is tubular and is in sliding sealing fit with the partition, and the side wall of the connecting rod is provided with a through hole;
the arc-shaped plate is provided with an oil outlet, the oil outlet is communicated with one end of the connecting rod, and the second cavity is intermittently communicated with the oil outlet through the through hole;
the direct current torque motor with the jump monitoring function further comprises:
one end of the connecting piece is connected with the second movable plug, and the other end of the connecting piece is connected with the conductor; the inside of the connecting piece is provided with an oil inlet cavity, the side wall of the connecting piece is connected with an oil inlet pipe through a telescopic hose, and the oil inlet cavity is connected with an oil storage tank for storing liquid lubricating oil through the oil inlet pipe;
one end of the fixed column is fixed on the partition piece, and the other end of the fixed column is in sliding sealing fit with the oil inlet cavity;
and the telescopic guide pipe penetrates through and is fixed on the second movable plug, one end of the telescopic guide pipe is communicated with the oil inlet cavity, and the other end of the telescopic guide pipe is communicated with the second cavity.
In some embodiments of the invention, the oil inlet pipe is provided with a check valve.
In some embodiments of the invention, the device further comprises a reserve oil tank and a reserve oil pipe, wherein the reserve oil pipe is connected with the oil inlet pipe, and the solenoid valve is arranged on the reserve oil pipe.
The embodiment of the invention has at least the following advantages or beneficial effects:
when the magnitude of the induced current is increased to a preset range, the amplitude of circle runout generated by rotation of the rotating shaft is overlarge, and the processing assembly timely sends out warning to related personnel through the warning assembly, so that the related personnel can take corresponding measures, and the situation that the rotation of the rotor is unstable is avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a dc torque motor with a runout monitoring function;
FIG. 2 is a schematic diagram of a runout monitoring mechanism;
FIG. 3 is an enlarged view of a portion of the position A of FIG. 2;
fig. 4 is a partial enlarged view of the position B in fig. 2.
Icon:
11-shell, 12-back cover, 21-arch permanent magnet, 31-rotating shaft, 32-magnetic flux sheet, 33-electric core wire, 4-bearing, 5-commutator, 6-brush, 61-brush fixing frame, 62-connecting terminal,
7-runout monitoring means, 71-annular sleeve, 711-partition, 712-first cavity, 713-second cavity,
72-arc-shaped plate, 721-connecting rod, 722-pressure spring, 723-via hole, 724-oil outlet hole,
73-a first movable plug, 74-a second movable plug, 742-a tension spring, 75-an electrical conductor, 76-a magnet, 77-a push rod,
78-connecting piece, 781-oil inlet cavity, 782-flexible hose, 783-oil inlet pipe, 784-check valve, 79-fixed column, 81-flexible pipe, 82-reserve oil pipe, 821-solenoid valve.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present invention.
In the description of embodiments of the present invention, it should be understood that the directions or positional relationships indicated by the terms "inner", "outer", "axial", "radial", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and to simplify the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
In the embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 4, the embodiment provides a dc torque motor with a runout monitoring function, which includes a housing assembly, a stator, a rotor, a bearing 4, a commutator 5, a brush 6 and a runout monitoring mechanism 7.
The housing assembly includes a housing 11 and a rear cover 12, the rear cover 12 being detachably connected to one end of the housing 11.
The stator comprises an arcuate permanent magnet 21 mounted inside the housing 11.
The rotor includes a rotating shaft 31, magnetic flux pieces 32, and an electric core wire 33, both ends of the rotating shaft 31 penetrate through the housing 11 and the rear cover 12, respectively, the magnetic flux pieces 32 are mounted on the rotating shaft 31, and the electric core wire 33 is wound on the magnetic flux pieces 32 in a predetermined order and connected with the commutator 5 to form a plurality of windings.
Bearings 4 are connected to both ends of the rotation shaft 31.
The commutator 5 is mounted on the rotary shaft 31 and is located between the rear cover 12 and the flux pieces 32.
The brush 6 is used for contacting with the commutator 5; the brush 6 is mounted on a brush holder 61, and the brush holder 61 is connected to a connection terminal 62.
In this embodiment, the material of the brush 6 includes copper, graphite and impregnated graphite to make the brush 6 more wear-resistant and have a longer service life.
Both ends of the rotating shaft 31 are provided with a runout monitoring mechanism 7, and the runout monitoring mechanism 7 is used for monitoring the circle runout condition when the rotating shaft 31 rotates; the runout monitoring mechanism 7 comprises an annular sleeve 71, an arc plate 72, a first movable plug 73, a second movable plug 74, an electrical conductor 75, a magnet 76, an induced current monitoring assembly, an input current monitoring assembly, and a processing assembly.
The annular sleeve 71 is mounted within the housing 11 with the shaft 31 extending axially through the annular sleeve 71, i.e. the shaft 31 is coaxial with the annular sleeve 71 and extends through the annular sleeve 71. The space between the inner and outer layers of the annular sleeve 71 is partitioned by a partition 711 into a first cavity 712 and a second cavity 713, the first cavity 712 being filled with hydraulic oil.
Arcuate plate 72 is adapted to remain in contact with shaft 31; the plurality of arc plates 72 are movably arranged along the radial direction of the annular sleeve 71 and can be spliced together into an annular structure; a connecting rod 721 is fixed on one side of the arc plate 72, and the connecting rod 721 is in sliding sealing connection with the inner layer of the annular sleeve 71; the connecting rod 721 is sleeved with a pressure spring 722, one end of the pressure spring 722 is connected with the arc-shaped plate 72, and the other end is connected with the inner layer of the annular sleeve 71.
The first movable plug 73 is fixed to the connecting rod 721 and is slidably and sealingly connected to the partition 711.
The second movable plug 74 is in sliding sealing connection with the outer layer of the annular sleeve 71 (the side wall of the first cavity 712) and is in driving connection with the first movable plug 73 by means of hydraulic oil. A tension spring 742 is connected between the second movable plug 74 and the partition 711.
One end of the electrical conductor 75 is in driving connection with the second movable plug 74.
The magnet 76 is disposed near the conductor 75, the magnet 76 is U-shaped, and the conductor 75 is used for cutting the magnetic induction line between the two poles of the magnet 76.
An induced current monitoring unit (not shown) is connected to the conductor 75 to form a closed loop for monitoring the induced current generated when the conductor 75 cuts the magnetic induction line and transmitting the change data of the induced current to the processing unit.
An input current monitoring component (not shown) is used to monitor the change in input current at the terminal 62 and send the change in input current data to the processing component.
When the change data of the induction current and the change data of the input current meet preset conditions, the processing component gives an alarm to related personnel in an acoustic mode, an optical mode and the like through an alarm component (not shown in the figure).
The operating principle of the runout monitoring mechanism 7 is as follows:
in the process of generating circular runout by rotating the rotating shaft 31, as the arc plate 72 is contacted with the rotating shaft 31 under the action of the pressure spring 722, part of the arc plate 72 is pushed by the rotating shaft 31 to enable the first movable plug 73 to move away from the rotating shaft 31, the first movable plug 73 drives the second movable plug 74 through hydraulic oil, the second movable plug 74 drives the conductor 75 to move so as to cut a magnetic induction line between two poles of the magnet 76 (the reset force of the conductor 75 is provided by the tension spring 742), induced current is generated, the induced current monitoring component sends the change data of the induced current to the processing component, the input current monitoring component sends the change data of the input current to the processing component, and when the change data of the induced current and the change data of the input current meet preset conditions, the processing component timely sends warning to related personnel in an acoustic mode, an optical mode and the like.
Because the magnitude of the induced current is in direct proportion to the magnetic field intensity, the length of the conductor 75 of the cutting induction line and the speed of the cutting induction line, under the premise that the input current is stable and the magnetic field intensity between two poles of the magnet 76 is stable, if the monitored induced current increases, the length of the conductor 75 of the cutting induction line is increased, the moving amplitude of the conductor 75 is increased, thus the increase of the amplitude of the circular runout generated by the rotation of the rotating shaft 31 is reflected, when the magnitude of the induced current is increased to a preset range, the amplitude of the circular runout generated by the rotation of the rotating shaft 31 is overlarge, and the processing component timely gives a warning to related personnel in a sound and light mode through the warning component so as to facilitate the related personnel to take corresponding measures, thereby avoiding the condition of unstable rotation of the rotor.
Referring to fig. 1 to 4, in embodiment 2, the difference between this embodiment and embodiment 1 is that, in this embodiment, the runout monitoring mechanism 7 further includes a locking component, when the magnitude of the induced current increases to a preset range, the rotating shaft 31 rotates to generate a circular runout with an excessive magnitude, the processing component makes the locking component push the conductive body 75, so as to sequentially drive the conductive body 75, the second movable plug 74, the hydraulic oil, the first movable plug 73 and the connecting rod 721, make the arc plate 72 react on the rotating shaft 31, and make the arc plates 72 jointly splice into a ring structure, correct the axial position of the rotating shaft 31 through the cooperation of the ring structure and the rotating shaft 31, improve the positioning of the rotating shaft 31, and make the axial line of the rotating shaft 31 keep coaxial with the bearing 4, thereby weakening the circular runout of the rotating shaft 31.
The locking assembly includes a push rod 77 and a driving member (not shown), one end of the push rod 77 is slidably connected to the conductive body 75 and is capable of pushing the conductive body 75 toward the rotation shaft 31, and the other end is connected to an output end of the driving member. The driving member may be a cylinder or an oil cylinder. When the magnitude of the induced current increases to a preset range, the amplitude of the circular runout generated by the rotation of the rotating shaft 31 is too large, the processing assembly enables the driving piece to drive the push rod 77, the arc plates 72 are spliced together to form an annular structure, the axis position of the rotating shaft 31 is corrected through the cooperation of the annular structure and the rotating shaft 31, and the axis of the rotating shaft 31 is kept coaxial with the bearing 4, so that the circular runout of the rotating shaft 31 is weakened.
Embodiment 3 referring to fig. 1 to 4, the difference between the present embodiment and embodiment 1 or 2 is that in the present embodiment, the jump monitoring mechanism 7 further includes a connecting member 78, a fixing post 79 and a telescopic conduit 81.
One end of the connecting member 78 is connected to the second movable plug 74, and the other end is connected to the electric conductor 75. The inside of the connecting piece 78 is provided with an oil inlet cavity 781, the side wall of the connecting piece is connected with an oil inlet pipe 783 through a telescopic hose 782, the oil inlet pipe 783 is communicated with the oil inlet cavity 781, and the oil inlet pipe 783 is provided with a check valve 784; the oil inlet pipe 783 is connected to a reservoir (not shown) for storing liquid lubricating oil.
One end of the fixing post 79 is fixed to the partition 711 and the other end is slidably and sealingly engaged with the oil inlet chamber 781.
The telescopic duct 81 penetrates and is fixed to the second movable plug 74, and one end of the telescopic duct 81 communicates with the oil inlet chamber 781 and the other end communicates with the second cavity 713.
The connecting rod 721 is tubular and is in sliding sealing fit with the partition 711, and a through hole 723 is formed in the side wall of the connecting rod 721; the arc plate 72 has an oil outlet hole 724, the oil outlet hole 724 communicates with one end of the connecting rod 721, and the second cavity 713 communicates with the oil outlet hole 724 through a through hole 723. The via 723 can be in intermittent communication with the second cavity 713; when the via 723 is located in the second cavity 713, the via 723 communicates with the second cavity 713; when the via 723 is located outside the second cavity 713, the via 723 is not in communication with the second cavity 713.
Liquid lubricating oil in the oil storage tank can sequentially pass through the oil inlet pipe 783, the telescopic hose 782, the oil inlet cavity 781, the telescopic duct 81, the second cavity 713, the through hole 723, the connecting rod 721 and the oil outlet hole 724 and is smeared between the arc plate 72 and the rotating shaft 31, so that friction resistance between the arc plate 72 and the rotating shaft 31 is reduced.
When the arc plate 72, the connecting rod 721 and the first movable plug 73 are pushed by the jump of the rotating shaft 31, the second movable plug 74 moves under the transmission action of hydraulic oil to enlarge the axial space of the oil inlet cavity 781, so that the liquid lubricating oil in the oil storage tank can be sucked into the oil inlet cavity 781 just like a syringe, and then the liquid lubricating oil in the oil inlet cavity 781 can be pushed into the second cavity 713 by the fixed column 79 along with the reset of the second movable plug 74 and smeared between the arc plate 72 and the rotating shaft 31 from the oil outlet hole 724.
As the amplitude of the runout of the rotating shaft 31 increases, the amplitude of the pushing of the arc plate 72, the connecting rod 721 and the first movable plug 73 by the rotating shaft 31 increases, and the amplitude of the movement of the second movable plug 74 by the transmission of the hydraulic oil increases, which further increases the axial space of the oil feed chamber 781 to push more liquid lubricant into the second cavity 713 and smear it from the oil outlet hole 724 between the arc plate 72 and the rotating shaft 31. The increase in the runout amplitude of the rotating shaft 31 means that the runout degree of the rotating shaft 31 is increased, at this time, the friction resistance between the rotating shaft 31 and the arc plate 72 is increased, and the embodiment pushes more liquid lubricant into the second cavity 713 and smears the lubricant between the arc plate 72 and the rotating shaft 31 from the oil outlet 724, so that better lubrication can be achieved.
The runout monitoring mechanism 7 further includes a reserve tank (not shown) and a reserve oil pipe 82, the reserve oil pipe 82 is connected to the oil feed pipe 783, and the reserve oil pipe 82 is provided with a solenoid valve 821.
In this embodiment, when the magnitude of the induced current increases to a preset range, the processing component may also make the locking component push the conductive body 75, so that the plurality of arc plates 72 are spliced together to form an annular structure, the axis position of the rotating shaft 31 is corrected by matching the annular structure with the rotating shaft 31, and at the same time, the processing component may also open the electromagnetic valve 821 to enable the liquid lubricating oil in the reserve oil tank, so as to increase the oil output of the oil outlet hole 724, thereby playing a better role in lubricating the arc plates 72 and the rotating shaft 31.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art, and the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without collision. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a direct current torque motor with monitor function beats, includes casing subassembly, stator, rotor, bearing, commutator and brush, the rotor includes the pivot, its characterized in that still includes the monitor mechanism that beats that is used for monitoring the circle condition of beating when the pivot is rotatory, it includes to beat monitor mechanism:
the rotating shaft penetrates through the annular sleeve; the space between the inner layer and the outer layer of the annular sleeve is divided into a first cavity and a second cavity by a dividing piece;
the arc-shaped plate is used for keeping contact with the rotating shaft, one side of the arc-shaped plate is fixed with a connecting rod, and the connecting rod is in sliding sealing connection with the inner layer of the annular sleeve;
the first movable plug is fixed on the connecting rod and is in sliding sealing connection with the partition piece;
the second movable plug is in sliding sealing connection with the outer layer of the annular sleeve and is in transmission connection with the first movable plug; a tension spring is connected between the second movable plug and the partition piece;
one end of the electric conductor is in transmission connection with the second movable plug;
the magnet is arranged close to the conductor, and the conductor is used for cutting a magnetic induction line between two poles of the magnet;
the induction current monitoring component is connected with the conductor to form a closed loop and is used for monitoring induction current generated when the conductor cuts a magnetic induction wire and sending change data of the induction current to the processing component;
the input current monitoring component is used for monitoring the change condition of the input current at the electric brush and sending the change data of the input current to the processing component;
the processing component is used for sending out warning to related personnel through the warning component when the change data of the induction current and the change data of the input current meet preset conditions;
the first cavity is filled with hydraulic oil, and the second movable plug is in transmission connection with the first movable plug through the hydraulic oil;
the connecting rod is sleeved with a pressure spring, one end of the pressure spring is connected with the arc-shaped plate, and the other end of the pressure spring is connected with the inner layer of the annular sleeve;
the arc plates are movably arranged along the radial direction of the annular sleeve and can be spliced together to form an annular structure.
2. The direct current torque motor with a runout monitoring function according to claim 1, wherein both ends of the rotating shaft are provided with the runout monitoring mechanism.
3. The dc torque motor with runout monitoring function as set forth in claim 1, further comprising a locking assembly, wherein when the magnitude of the induced current increases to a preset range, the processing assembly causes the locking assembly to push the electrical conductor, so that the arc-shaped plate reacts on the rotating shaft, and a plurality of arc-shaped plates are spliced together to form a ring structure.
4. A direct current torque motor with runout monitoring function as claimed in claim 3, wherein the locking assembly comprises a push rod and a driving member, one end of the push rod is slidably connected with the electric conductor and can push the electric conductor towards the rotating shaft, and the other end is connected with the output end of the driving member.
5. The DC torque motor with runout monitoring function according to claim 1-4, wherein,
the connecting rod is tubular and is in sliding sealing fit with the partition piece, and a through hole is formed in the side wall of the connecting rod;
the arc-shaped plate is provided with an oil outlet, the oil outlet is communicated with one end of the connecting rod, and the second cavity is intermittently communicated with the oil outlet through the through hole;
the direct current torque motor with the jump monitoring function further comprises:
one end of the connecting piece is connected with the second movable plug, and the other end of the connecting piece is connected with the conductor; an oil inlet cavity is formed in the connecting piece, the side wall of the connecting piece is connected with an oil inlet pipe through a telescopic hose, and the oil inlet cavity is connected with an oil storage tank for storing liquid lubricating oil through the oil inlet pipe;
one end of the fixed column is fixed on the partition piece, and the other end of the fixed column is in sliding sealing fit with the oil inlet cavity;
and one end of the telescopic guide pipe is communicated with the oil inlet cavity, and the other end of the telescopic guide pipe is communicated with the second cavity.
6. The direct current torque motor with runout monitoring function according to claim 5, wherein the oil inlet pipe is provided with a check valve.
7. The direct current torque motor with a runout monitoring function according to claim 5, further comprising a reserve oil tank and a reserve oil pipe, wherein the reserve oil pipe is connected with the oil inlet pipe, and an electromagnetic valve is arranged on the reserve oil pipe.
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|---|---|
| CN117394607A (en) | 2024-01-12 |
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