CN204099703U - Built-in gas meter valve switching mechanism - Google Patents

Built-in gas meter valve switching mechanism Download PDF

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Publication number
CN204099703U
CN204099703U CN201420414087.2U CN201420414087U CN204099703U CN 204099703 U CN204099703 U CN 204099703U CN 201420414087 U CN201420414087 U CN 201420414087U CN 204099703 U CN204099703 U CN 204099703U
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gear
wheel
ratchet
gas meter
built
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CN201420414087.2U
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钭伟明
郭刚
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Goldcard Smart Group Co Ltd
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Goldcard High Tech Co Ltd
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Abstract

The utility model provides a kind of built-in gas meter valve switching mechanism, relates to gas meter technical field.It comprises and is located at motor in gas meter interior framework and returning spring, motor output shaft is connected with motor output gear, motor output gear is connected with planet gear reducing mechanism, planet gear reducing mechanism output gear is connected with ratchet planetary clutch control mechanism, ratchet planetary clutch control mechanism output gear is connected with band tooth bar pull bar, band tooth bar pull bar is connected with jam pot cover, and returning spring one end is connected the other end with jam pot cover and is connected with frame.It is complicated that the utility model solves gas meter switch valve mechanism in prior art, and volume greatly, consumes the technical problem that electric energy is many.The beneficial effects of the utility model are: gas meter valve opening/closing mechanism volume is little, are suitable in the built-in installation of gas meter, reduce gas meter volume, and saving is produced and installation takies larger space.Normally can work under 3V direct current, low power consumption energy saving, does not need often to change battery, easy to use.

Description

Built-in gas meter valve switching mechanism
Technical field
The utility model relates to gas meter technical field, especially relates to the driving mechanism that a kind of gas meter valve opens and closes.
Background technique
Gas meter industry technology development in recent years rapidly, also improves constantly the requirement of supporting control valve, especially how to reduce power consumption, improves reliability, saves these three aspects of manufacture cost and require more and more higher.Early stage gas meter generally all adopts screw-rod structure to realize switch valve, and it has the little feature of volume and is easy to realize the built-in installation of valve on gas meter, and cost is very low.But by the restriction of its working principle, tightly air tight for ensureing to close valve, need motor rotation blockage to run.Usual gas meter adopts No. 5 alkaline battery series connection of 4 joint as power supply, because motor rotation blockage runs power consumption greatly, can not meet low power consumption requirement, need often to change battery.Along with the development of technology, gas meter adopts external gear pump to slow down, and realizes switch valve by ratchet and spring mechanism.Chinese patent Authorization Notice No. CN100392305C, authorized announcement date on June 4th, 2008, the invention that name is called " actuator of valve for gasmeter ", discloses a kind of gas meter switch valve mechanism.Motor and motor output gear is provided with in the casing of this device, gear shaft A is provided with in casing, on gear shaft A, cover has the input gear of the upper and lower tooth of tool, stirs tooth block and driver plate successively from bottom to top, driver plate front end has lower to projection, on this projection, cover has band ratchet gear, the lower tooth of input gear engages with the final-stage gear of motor output gear, and the upper tooth of input gear engages with the lower tooth of band ratchet gear, and the upper strata ratchet of band ratchet gear can coordinate with stirring tooth block; Stir on tooth block and driver plate and be combined with torsion spring, stir tooth block and swing the swing of drive driver plate; Also be provided with gear shaft B in casing, in gear B, cover has group bar gear, and driver plate rotation can make the lower tooth of band ratchet gear and dial bar gears meshing; Casing is equipped with tooth bar to coordinate with group bar gear; Tooth bar moves opening/shutting valve; Tooth bar is provided with multiple return device, and multiple return device is the spring being placed on tooth bar.Gas meter is measuring instrument, and the gear of transmission gas meter switch valve moment requires small in volume.This will use fine module gear carry-over moment.The determination of module, is selected by the physical dimension of driving mechanism usually.The moment that the gear guarantee transmission that modulus ratio is larger is larger.The number of teeth one timing of gear, modulus is larger, then the radial dimension of taking turns is also larger.This structure not only needs to slow down and transmits but also need moment transmission from motor to tooth bar.Need to slow down to adopt stage-geared, stage-geared causes reducing gear bulky, and finally make gas meter volume very large, this not only wastes the resources of production, and later stage installation also needs to occupy larger space.When keeping reduction speed ratio constant, then need to reduce the modulus of driving gear to save space.The feature of gas meter makes gear all use plastic gear, and low module plastic gear not only can bring the Shooting Technique difficulty of gear once large, Bending Strength of Plastic Gear also can be brought to decline, the problem of transmission instability simultaneously.In addition, because a whole set of reducing gear is too huge, also need to consume too much electric energy.Like this, not only battery case is larger, gas meter volume certainly will can be caused again once large, but also need often to change battery, make troubles to user.
Summary of the invention
Complicated in order to solve prior art gas meter switch valve mechanism structure, volume is bigger than normal, consumes the technical problem of too much electric energy, the utility model provides that a kind of volume is little, low power consumption, good reliability built-in gas meter valve switching mechanism.
The technical solution of the utility model is: a kind of built-in gas meter valve switching mechanism, it comprises and is located at motor in gas meter interior framework and returning spring, motor output shaft is connected with motor output gear, motor output gear is connected with planet gear reducing mechanism, planet gear reducing mechanism output gear is connected with ratchet planetary clutch control mechanism, ratchet planetary clutch control mechanism output gear is connected with band tooth bar pull bar, band tooth bar pull bar is connected with jam pot cover, and returning spring one end is connected the other end with jam pot cover and is connected with frame.Motor output torque passes to planet gear reducing mechanism, low speed will be kept at a high speed simultaneously, the action of ratchet planetary clutch control mechanism pulls jam pot cover, the valve opening of gas meter, ratchet planetary clutch control mechanism and returning spring balance, realize valve in the opening state not needing to remain on when consuming electric energy any position, valve opening is steady.Ratchet planetary clutch control mechanism unclamps, and jam pot cover relies on the elastic force of returning spring, is close to valve port of giving vent to anger, and valve closes valve rapidly, and the sealing of sealing and the electricity of battery have nothing to do, and achieve the high reliability of valve seal.
As preferably, planet gear reducing mechanism comprises and cogging and lower gear, cog the wheel carrier being connected with and can rotating around the medial axis that cogs, wheel carrier is connected with several planetary gear set, planetary gear set is coaxially formed by connecting by mafor planet gear and small planetary gear, cogs as internal gear engages with mafor planet gear, and lower gear top is that internal gear engages with small planetary gear, lower gear bottom is connected with output gear, and motor output gear engages with mafor planet gear.Planet gear reducing mechanism volume is little, compact structure, and reduction speed ratio is large, and moment transmission is large, transmission efficiency is high, stable drive.Be suitable for 3k-II planetary gear train doing intermittent movement, in employing compared with under the prerequisite of large module gear, achieve control valve slowing-down structure microminiaturized, considerably reduce the requirement of motor to supply current simultaneously.
As preferably, ratchet planetary clutch control mechanism comprises lifting wheel and ratchet wheel, ratchet wheel is coaxially connected with pawl wheel, pawl wheel top is that external gear engages with output gear, pawl wheel bottom is provided with several uniform ratchets, the ratchet of ratchet and ratchet wheel matches, the wheel rim of ratchet wheel is provided with coupling shaft, coupling shaft is connected with the road wheel that can rotate around it, road wheel engages with the external gear on pawl wheel top, lifting wheel is double-deck cone pulley, and lower floor's wheel of double-deck cone pulley engages with road wheel, and the upper strata wheel of double-deck cone pulley engages with band tooth bar pull bar.The input gear of ratchet and ratchet planetary clutch mechanism is integrated, and simultaneously input gear tooth is wide tooth, simplify mechanism, achieve input gear, output gear in the transmission of different cross section, simple little Liao mechanism is microminiaturized.Ratchet is uniform, realizes cancelling out each other of each ratchet active force, effectively improves transmission efficiency.
As preferably, ratchet one end and pawl wheel are fixed the other end and are stretched along pawl wheel excircle, and end is unsettled.Adopt long cantilever structure, make ratchet have more elasticity, solve the self-powered problem of work of ratchet.Achieve the summary of pawl wheel and ratchet wheel clutch single-direction transmission structure, microminiaturization.
As preferably, the gear ratio that two gears are taken turns on lower floor's wheel and the upper strata of the double-deck cone pulley of lifting wheel is 2 ~ 3; Increase effectively reduction speed ratio, reduce the requirement of strength to ratchet and ratchet in ratchet planetary clutch control mechanism, decrease energy ezpenditure, improve transmission efficiency, can supply current be reduced.
As preferably, planetary gear set has three to five groups; Planet wheel running is more steady.
As preferably, returning spring is column Compress Spring; Be conducive to the sealing plane of jam pot cover and valve port keeping parallelism of giving vent to anger, valve opening, pass valve are more steady, and sealing effect is better.
Compared with prior art, the beneficial effects of the utility model are: gas meter valve opening/closing mechanism compact, are suitable on gas meter, do built-in installation, reduce gas meter volume, have saved to produce and install and use to take larger space.Normally can work under the power supply of 3V direct current (d.c.), low power consumption energy saving, does not need often to change battery, easy to use.
Accompanying drawing explanation
Accompanying drawing 1 is Facad structure schematic diagram of the present utility model;
Accompanying drawing 2 is the A direction view of Fig. 1;
Accompanying drawing 3 is the sectional view of B-B in Fig. 2.
In figure: 1-frame; 2-motor; 3-planet gear reducing mechanism; 4-ratchet planetary clutch control mechanism; 5-returning spring; 6-jam pot cover; 7-is with tooth bar pull bar; 21-motor output gear; 31-wheel carrier; 32-cogs; 33-lower gear; 41-lifting wheel; 42-pawl wheel; 43-ratchet wheel; 44-road wheel; 311-mafor planet gear; 312-small planetary gear; 331-output gear; 421-ratchet.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As illustrated in fig. 1 and 2, a kind of built-in gas meter valve switching mechanism, it comprises and is located at motor 2 in gas meter interior framework 1 and returning spring 5.Motor 2 output shaft is connected with motor output gear 21.Motor output gear 21 is external gear.Motor output gear 21 is connected with planet gear reducing mechanism 3.Planet gear reducing mechanism 3 comprises cog 32 and lower gear 33.Cog 32 for internal gear, cog 32 cylindrical shapes in upper end closed lower opening.32 madial walls that cog are provided with the gear teeth.Cog 32 be connected with can around cog 32 medial axis rotate wheel carrier 31.Be central shaft in the middle part of wheel carrier 31, the medial axis of central shaft overlaps with 32 medial axis that cog.Wheel carrier 31 is connected with disc, and the present embodiment is three disc.Wheel carrier 31 is connected with several planetary gear set, and planetary gear set is coaxially formed by connecting by mafor planet gear 311 and small planetary gear 312.Mafor planet gear 311 and small planetary gear 312 are external gear.Planetary gear set has three groups, and often organize planet wheel and be provided with a rotating shaft, the free end of rotating shaft and wheel carrier 31 disc is rotatably connected.Upper end and the mafor planet gear 311 of rotating shaft are fixed, and lower end and the small planetary gear 312 of rotating shaft are fixed.Motor output gear 21 engages with mafor planet gear 311.Cog and 32 to engage with mafor planet gear 311.Lower gear 33 section is in T shape, and lower gear 33 top is internal gear, and lower gear 33 top is the cylindrical shape of upper end open lower end closed, and cylinder madial wall is provided with the gear teeth.The gear on lower gear 33 top engages with small planetary gear 312.Lower gear 33 bottom is connected with output gear 331, and output gear 331 is external gear.Planet gear reducing mechanism 3 output gear is connected with ratchet planetary clutch control mechanism 4.Output gear 331 engages with ratchet planetary clutch control mechanism 4 input end gear.
As shown in Figure 3, ratchet planetary clutch control mechanism 4 comprises lifting wheel 41 and ratchet wheel 43.The cylindrical shape of ratchet wheel 43 in upper end open lower end closed, cylinder madial wall is provided with ratchet.The wheel rim of ratchet wheel 43 is provided with coupling shaft 422, and coupling shaft 422 lower end and ratchet wheel 43 opening end upper surface are fixed, and coupling shaft 422 upper end is unsettled.Coupling shaft 422 is connected with the road wheel 44 that can rotate around it.Road wheel 44 is external gear.Ratchet wheel 43 is coaxially connected with pawl wheel 42.Frame 1 is provided with stationary axle, and pawl wheel 42 and ratchet wheel 43 can rotate around stationary axle.Pawl wheel 42 top is wide tooth external gear.The top of wide tooth is engaged with output gear 331, and the bottom of wide tooth is engaged with road wheel 44.Pawl wheel 42 bottom is provided with several ratchets 421.Ratchet 421 matches with the ratchet of ratchet wheel 43.The outer side surface of ratchet 421 one end and the wide tooth bottom of pawl wheel 42 is fixed, and in order to make ratchet 421 have certain elasticity, ratchet 421 the other end stretches along pawl wheel 42 excircle, and end is unsettled.Ratchet 421 overlooks into one section of annulus, and small arc-shaped diameter is larger than pawl wheel 42 lower cylinder diameter, and orthodrome diameter is more smaller than ratchet wheel 43 cylinder inner wall circular diameter.There is a lug boss ratchet 421 free end end.Due to the effect of ratchet 421 elastic force, lug boss can snap in ratchet.The present embodiment ratchet 421 has three, is uniformly distributed centered by pawl wheel 42 center of circle.Lifting wheel 41 is double-deck cone pulley, and lifting wheel 41 is external gear.The gear ratio that two gears are taken turns on lower floor's wheel and the upper strata of double-deck cone pulley is 2 ~ 3, and the gear ratio of the present embodiment is 2.5.Lower floor's wheel of double-deck cone pulley engages with road wheel 44.Ratchet planetary clutch control mechanism 4 output gear is connected with band tooth bar pull bar 7, and the upper strata wheel of double-deck cone pulley engages with the tooth of band tooth bar pull bar 7.
As shown in figs. 1 and 3, band tooth bar pull bar 7 is connected with jam pot cover 6, and returning spring 5 is column Compress Spring.Returning spring 5 one end is connected the other end with jam pot cover 6 and is connected with frame 4.Tooth bar pull bar 7 inserts returning spring 5.
In Fig. 3, pinion rotation direction is represented by dashed line, represents gear rotate forward direction without the filling direction of arrow, has the filling direction of arrow to represent gear and rotates backward direction.
Motor 2 obtains electric rotating forward, and motor output gear 21 rotates forward a moment and speed passes to mafor planet gear 311, slows down through planet gear reducing mechanism 3, exports to pawl wheel 42 by output gear 331.Ratchet planetary clutch control mechanism 4 obtains moment.Pawl wheel 42 rotates forward, and pawl wheel 42 top external gear engages with road wheel 44, and road wheel 44 rotates forward around coupling shaft 422.The cantilever of pawl wheel 42 lower detent 421 relies on the ratchet tooth top contact carrying small and weak elastic force and ratchet wheel 43, drives ratchet wheel 43 to rotate forward.Ratchet wheel 43 drives road wheel 44 to turn around ratchet wheel 43 medial axis forward, and road wheel 44 to be close on lifting wheel 41 limit and the gear teeth meshing of taking turns with lifting wheel 41 lower floor.When road wheel 44 and lifting wheel 41 lower floor take turns engage time, lifting wheel 41 can stop power to road wheel 44 1, it is large that cantilever because of this prevention force rate ratchet 421 carries small and weak elastic force, ratchet 421 and ratchet wheel 43 skid, ratchet wheel 43 stops operating relatively, and the cantilever that motor 2 needs provide consumption to overcome ratchet 421 energy carried needed for small and weak elastic force ensures that road wheel 44 is taken turns with lifting wheel 41 lower floor and engages.Lifting wheel 41 rotates forward, and the gear teeth of lifting wheel 41 upper strata wheel engage with the tooth of band tooth bar pull bar 7.Band tooth bar pull bar 7 drives jam pot cover 6 to leave valve port, completes valve opening action.Just while valve opening, jam pot cover 6 extrudes returning spring 5, completes returning spring 5 stored energy.
Valve is opened on the arbitrary position of needs, and motor 2 cuts out and quits work, and motor output gear 21 does not have moment to export.Jam pot cover 6 has the power of a pass valve by the effect of returning spring 5 elastic force, and this closes valve power passes to lifting wheel 41 by being with the tooth on tooth bar pull bar 7, and lifting wheel 41 obtains counter-rotational power, and counter-rotational power is passed to road wheel 44 by lifting wheel 41.Road wheel 44 passes to pawl wheel 42 this power of rotating on the contrary, and ratchet 421 buckles into the ratchet on ratchet wheel 43 under the effect of its own resilient, and this power of rotating on the contrary passes to ratchet wheel 43, and ratchet wheel 43 rotates backward.But pawl wheel 42 rotates backward and road wheel 44 can be driven to rotate forward, road wheel 44, simultaneously under a forward turns the effect of counter-rotational two power, keeps balance, realizes in the locking not needing to keep when consuming electric energy valve opening state.
Motor obtains electric reversion, and motor output gear 21 rotates backward, planet gear reducing mechanism 3 reverse operation.The power coming from motor of amplifying is passed to pawl wheel 42 by output gear 331.Power is passed to ratchet wheel 43 by ratchet 421 by pawl wheel 42, ratchet wheel 43 rotates backward, road wheel 44 is driven to rotate to the direction fleeing from lifting wheel 41 on the one hand, by pawl wheel 42, power being passed to road wheel 44 on the other hand allows its generation be used for overcoming the power coming from lifting wheel 41, by the effect of these two power, road wheel 44 completes the action of fleeing from lifting wheel 41, corresponding area tooth bar pull bar 7 drives jam pot cover 6 to move to valve port direction under by the effect of returning spring 5 elastic force, until jam pot cover 6 arrives to valve port, complete pass valve events.

Claims (7)

1. a built-in gas meter valve switching mechanism, it comprises and is located at motor (2) in gas meter interior framework (1) and returning spring (5), it is characterized in that: motor (2) output shaft is connected with motor output gear (21), motor output gear (21) is connected with planet gear reducing mechanism (3), planet gear reducing mechanism (3) output gear is connected with ratchet planetary clutch control mechanism (4), ratchet planetary clutch control mechanism (4) output gear is connected with band tooth bar pull bar (7), band tooth bar pull bar (7) is connected with jam pot cover (6), described returning spring (5) one end is connected the other end with jam pot cover (6) and is connected with frame (1).
2. built-in gas meter valve switching mechanism according to claim 1, it is characterized in that: described planet gear reducing mechanism (3) comprises and cogging (32) and lower gear (33), cog (32) be connected with can around cog (32) medial axis rotate wheel carrier (31), wheel carrier (31) is connected with several planetary gear set, planetary gear set is coaxially formed by connecting by mafor planet gear (311) and small planetary gear (312), described cog (32) engage with mafor planet gear (311) for internal gear, described lower gear (33) top is that internal gear engages with small planetary gear (312), lower gear (33) bottom is connected with output gear (331), described motor output gear (21) engages with mafor planet gear (311).
3. built-in gas meter valve switching mechanism according to claim 1 and 2, it is characterized in that: ratchet planetary clutch control mechanism (4) comprises lifting wheel (41) and ratchet wheel (43), ratchet wheel (43) is coaxially connected with pawl wheel (42), pawl wheel (42) top is that external gear engages with output gear (331), pawl wheel (42) bottom is provided with several uniform ratchets (421), ratchet (421) matches with the ratchet of ratchet wheel (43), the wheel rim of ratchet wheel (43) is provided with coupling shaft (422), coupling shaft (422) is connected with the road wheel (44) that can rotate around it, road wheel (44) engages with the external gear on pawl wheel (42) top, lifting wheel (41) is double-deck cone pulley, lower floor's wheel of double-deck cone pulley engages with road wheel (44), the upper strata wheel of double-deck cone pulley engages with band tooth bar pull bar (7).
4. built-in gas meter valve switching mechanism according to claim 3, is characterized in that: described ratchet (421) one end and the fixing the other end of pawl wheel (42) stretch along pawl wheel (42) excircle, and end is unsettled.
5. built-in gas meter valve switching mechanism according to claim 3, is characterized in that: the gear ratio that two gears are taken turns on lower floor's wheel and the upper strata of described lifting wheel (41) double-deck cone pulley is 2 ~ 3.
6. built-in gas meter valve switching mechanism according to claim 2, is characterized in that: described planetary gear set has three to five groups.
7. built-in gas meter valve switching mechanism according to claim 1, is characterized in that: described returning spring (5) is column Compress Spring.
CN201420414087.2U 2014-07-25 2014-07-25 Built-in gas meter valve switching mechanism Active CN204099703U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420414087.2U CN204099703U (en) 2014-07-25 2014-07-25 Built-in gas meter valve switching mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420414087.2U CN204099703U (en) 2014-07-25 2014-07-25 Built-in gas meter valve switching mechanism

Publications (1)

Publication Number Publication Date
CN204099703U true CN204099703U (en) 2015-01-14

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Application Number Title Priority Date Filing Date
CN201420414087.2U Active CN204099703U (en) 2014-07-25 2014-07-25 Built-in gas meter valve switching mechanism

Country Status (1)

Country Link
CN (1) CN204099703U (en)

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GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 325600 Yueqing Economic Development Zone, Wenzhou, No. seventeen weft Road No. 291, Zhejiang

Patentee after: Limited by Share Ltd group

Address before: 325600 Yueqing Economic Development Zone, Wenzhou, No. seventeen weft Road No. 261, Zhejiang

Patentee before: GoldCard High Technology Co., Ltd.