CN104079114A - Ratchet wheel device for preventing motor from reversing - Google Patents
Ratchet wheel device for preventing motor from reversing Download PDFInfo
- Publication number
- CN104079114A CN104079114A CN201410331720.6A CN201410331720A CN104079114A CN 104079114 A CN104079114 A CN 104079114A CN 201410331720 A CN201410331720 A CN 201410331720A CN 104079114 A CN104079114 A CN 104079114A
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- ratchet
- electromagnet
- motor
- ratchet wheel
- reversing
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Abstract
The invention discloses a ratchet wheel device for preventing a motor from reversing. The ratchet wheel device for preventing the motor from reversing is characterized by comprising a ratchet wheel, a pawl and an electromagnet, the ratchet wheel is installed on a motor drive shaft, the pawl is matched with the ratchet wheel, the electromagnet is installed at the other end of the pawl, the pawl is provided with an installation hole, and with the installation hole as the boundary, the sum of the weight of the part, on one side of the electromagnet, of the pawl and the weight of the electromagnet is smaller than the weight of the other side of the pawl. The ratchet wheel device for preventing the motor from reversing has the advantages that the structure is stable and reliable, and the requirements can be met through the low-power electromagnet; the motor is used for controlling a sensor, the motor drive shaft rotates forwards when power is on, the ratchet wheel device does not affect the normal operation of the motor, the motor drive shaft is prevented from reversing when power is off, the phenomenon that the sensor is soaked in an oil tank for a long time when the sensor does not work and the power is off is completely eradicated, long-term, stable and efficient working of the sensor is facilitated, the service life of the sensor is prolonged, the cable winding accident can be prevented, and losses of manpower and material resources are reduced.
Description
Technical field
The present invention relates to a kind of ratchet device, be specifically related to a kind of ratchet device that prevents motor reversing, belong to motor accessory field.
Background technology
In use Electric Machine Control sensing system, the outstanding rope one end at transducer top is wound around above online roller, utilizes motor to carry out the rotation of control line roller, and line roller forward transducer rises, and line roller reversion transducer declines.Therefore when working sensor, be to control its ascending and descending process with motor, in ascending and descending process, motor driving shaft is subject to the effect of transducer pulling force.
In storage tank detection system, motor used is under powering-off state, do not prevent the function of motor driving shaft reversing, in the time of power-off, transducer is subject to Action of Gravity Field toward declining, motor is because the effect that is subject to transducer pulling force is reversed, motor can not stop free fall sensor, only has when transducer enters after oil tank touches the end and just can stop gliding.So bring series of problems, for example:
1, transducer long period of soaking is in oil tank, and the silt of crude oil and tank bottom easily sticks to above the shell of transducer, even enters into the device inside, the tactile end of transducer, in the time that sensor energize is worked, affects accuracy of detection.
2, transducer is subject to Action of Gravity Field and accelerates decline, and when transducer drops to tank bottom, being wound around likely appears in the outstanding rope at transducer top, causes around cable accident.
3, plant maintenance inconvenience, under powering-off state, if transducer is carried out to maintaining, staff need to pull transducer from tens meters of dark tank bottoms, waste staff's time, has reduced operating efficiency.
In order to prevent that motor from reversing under powering-off state, the method that prior art is used is: while preventing power-off by the resistance of the axle on reinforcement motor, reverse.This technology is simple and easy to realize, but the method for this reinforcement resistance, when under "on" position, motor is normally worked, the large resistance of forward or reversing shaft all exists, this has just strengthened the power of electrical consumption, because operating system needs remote power feeding, the power that therefore will control motor can not be very large.
What in hoisting equipment, application was wider is electromagnetic brake braking technology, and the structure of electromagnetic brake is mainly made up of two parts: braking electromagnet and block brake.Braking electromagnet is made up of iron core, armature and coil three parts.Block brake comprises brake wheel, brake shoe and spring etc., and brake wheel and motor are contained in same rotating shaft.Operation principle: motor connecting power, simultaneously electromagnetic brake coil also electric, armature adhesive, the pulling force that overcomes spring separates the brake shoe of brake and brake wheel, motor normal operation.Under outage condition, motor dead electricity, also dead electricity of electromagnetic brake coil simultaneously, armature separates with iron core under spring tension effect, and makes the brake shoe of brake tightly embrace brake wheel, and motor is braked and stall.But electromagnetic brake brake structure more complicated, volume is larger, installs complicated.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide the ratchet device for preventing that motor from reversing of a kind of Stability Analysis of Structures, dependable performance, this ratchet device does not affect the normal work of motor driving shaft in energising situation, not only can prevent driving shaft reversing but also do not affect the forward of motor driving shaft under powering-off state.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
A ratchet device that prevents motor reversing, is characterized in that, comprising: be installed on the ratchet on motor driving shaft, and the ratchet coordinating with ratchet, and be installed on the electromagnet of the ratchet other end; On aforementioned ratchet, be formed with installing hole, taking installing hole as boundary, the weight of the ratchet of electromagnet place one side and the weight sum of electromagnet are less than the weight of ratchet opposite side.
The aforesaid ratchet device that prevents motor reversing, is characterized in that, aforementioned electric magnet is push-pull electromagnet or sucked type electromagnet.
Usefulness of the present invention is: utilize gravity principle, Stability Analysis of Structures is reliable; Adjust gravity proportioning according to lever principle, electromagnet is arranged on to optimum position, the magnetic force that electromagnet is very little just can make ratchet depart from ratchet, therefore utilizes low power electromagnet just can meet the demands; In use Electric Machine Control sensing system, the one motor driving shaft forward that powers on, ratchet device of the present invention can not affect the normal work of motor, when power-off, can prevent again motor driving shaft reversing, stop transducer and be immersed in for a long time the phenomenon in oil tank in the time that power-off is not worked, be conducive to transducer work efficiently steady in a long-term, extended the useful life of transducer, can prevent the generation around cable accident, reduced the loss of manpower and materials simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of a specific embodiment of the ratchet device that prevents motor reversing of the present invention;
Fig. 2 is ratchet device in Fig. 1 view in energising situation;
Fig. 3 is ratchet device in Fig. 1 view under powering-off state.
The implication of Reference numeral in figure: 1-motor, 2-driving shaft, 3-ratchet, 4-ratchet, 5-electromagnet, 6-installing hole, the direction of arrow is ratchet reverses direction.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is done to concrete introduction.
Referring to figs. 1 through Fig. 3, the ratchet device that prevents motor reversing of the present invention, comprise: ratchet 3, ratchet 4 and electromagnet 5, wherein, ratchet 3 is installed on the driving shaft 2 of motor 1, and ratchet 4 coordinates with ratchet 3, and the two ends of ratchet 4 are designated as respectively A, B, A end is provided with electromagnet 5, and B end coordinates with the tooth root of ratchet 3, ratchet 4 is formed with installing hole 6 between A end and B end, be designated as C, the particular location of installing hole 6 is determined according to gravity proportioning, concrete, taking installing hole 6 as boundary, the weight of ratchet 4 of electromagnet 5 place one sides and the weight sum of electromagnet 5 are less than the weight of ratchet 4 opposite sides, be the weight that the weight of ratchet 4AC section and the weight sum of electromagnet 5 are less than ratchet 4BC section, be slightly less than, can ensure like this to utilize very little magnetic force just ratchet 4 can be departed to ratchet 3 at energising situation lower electromagnet 5, can make ratchet 4 fall back to ratchet 3 tooth root parts at powering-off state again.
As the preferred scheme of one, electromagnet 5 is push-pull electromagnet.
As the preferred scheme of one, electromagnet 5 is sucked type electromagnet.
Ratchet device of the present invention, in energising situation, referring to Fig. 2, electromagnet 5 utilizes magnetic that pull bar is sucked back, make ratchet 4 depart from ratchet 3, ratchet 3 is along with the driving shaft 2 of motor 1 rotates, and visible ratchet device does not affect the normal work of motor driving shaft 2 in energising situation; When power-off, referring to Fig. 3, electromagnet 5 magnetic disappear, ratchet 4 is got back to ratchet 3 tooth root parts, restriction ratchet 3 reverses, limited the reversing of motor driving shaft 2, but do not affected the forward of motor driving shaft 2, visible ratchet device not only can prevent driving shaft reversing but also not affect the forward of motor driving shaft under powering-off state.
In sum, ratchet device of the present invention utilizes gravity principle to carry out work, Stability Analysis of Structures, dependable performance; Adjust gravity proportioning according to lever principle, electromagnet is arranged on to optimum position, and the magnetic force that electromagnet is very little just can make ratchet depart from ratchet, therefore utilizes low power electromagnet just can meet the demands, avoid occurring meeting the requirement of explosion proof that detects former wet goods field by large electric current in detection system.
It should be noted that, above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.
Claims (3)
1. the ratchet device that prevents motor reversing, is characterized in that, comprising: be installed on the ratchet on motor driving shaft, and the ratchet coordinating with ratchet, and be installed on the electromagnet of the ratchet other end; On described ratchet, be formed with installing hole, taking installing hole as boundary, the weight of the ratchet of electromagnet place one side and the weight sum of electromagnet are less than the weight of ratchet opposite side.
2. the ratchet device that prevents motor reversing according to claim 1, is characterized in that, described electromagnet is push-pull electromagnet.
3. the ratchet device that prevents motor reversing according to claim 1, is characterized in that, described electromagnet is sucked type electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331720.6A CN104079114A (en) | 2014-07-11 | 2014-07-11 | Ratchet wheel device for preventing motor from reversing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331720.6A CN104079114A (en) | 2014-07-11 | 2014-07-11 | Ratchet wheel device for preventing motor from reversing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104079114A true CN104079114A (en) | 2014-10-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410331720.6A Pending CN104079114A (en) | 2014-07-11 | 2014-07-11 | Ratchet wheel device for preventing motor from reversing |
Country Status (1)
| Country | Link |
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| CN (1) | CN104079114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965459A (en) * | 2017-12-25 | 2018-04-27 | 湖北三宁化工股份有限公司 | A kind of device for preventing impeller wheel of centrifugal machine from inverting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030734A (en) * | 1987-06-16 | 1989-02-01 | 三菱电机株式会社 | The spindle braking system of escalator |
| WO1992011145A1 (en) * | 1990-12-18 | 1992-07-09 | Rotalok (Europe) Ltd. | Locking device for transmission systems of vehicles |
| JPH11258481A (en) * | 1999-01-25 | 1999-09-24 | Seiko Precision Inc | Lens driving mechanism |
| CN1821469A (en) * | 2005-02-16 | 2006-08-23 | 津田驹工业株式会社 | Catching side-warp false twisting device of no-shuttle loom |
| CN101205051A (en) * | 2007-12-11 | 2008-06-25 | 周增林 | Overspeed protected brake of hoisting equipment |
-
2014
- 2014-07-11 CN CN201410331720.6A patent/CN104079114A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030734A (en) * | 1987-06-16 | 1989-02-01 | 三菱电机株式会社 | The spindle braking system of escalator |
| WO1992011145A1 (en) * | 1990-12-18 | 1992-07-09 | Rotalok (Europe) Ltd. | Locking device for transmission systems of vehicles |
| JPH11258481A (en) * | 1999-01-25 | 1999-09-24 | Seiko Precision Inc | Lens driving mechanism |
| CN1821469A (en) * | 2005-02-16 | 2006-08-23 | 津田驹工业株式会社 | Catching side-warp false twisting device of no-shuttle loom |
| CN101205051A (en) * | 2007-12-11 | 2008-06-25 | 周增林 | Overspeed protected brake of hoisting equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965459A (en) * | 2017-12-25 | 2018-04-27 | 湖北三宁化工股份有限公司 | A kind of device for preventing impeller wheel of centrifugal machine from inverting |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141001 |
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| RJ01 | Rejection of invention patent application after publication |