CN221006443U - Gas meter counting transmission structure - Google Patents

Abstract

The utility model relates to the technical field of gas meters, in particular to a gas meter counting transmission structure; the gas meter comprises a machine core and a character wheel assembly, wherein the machine core comprises an output shaft extending out of a gas meter body, and one end of the character wheel assembly is provided with a worm wheel; the device also comprises a shaft tooth piece and a transmission piece which are rotatably arranged; the output shaft is connected with a driving wheel, and the shaft tooth piece is detachably connected with a driven wheel meshed with the driving wheel; the shaft teeth part is provided with shaft teeth, the transmission part comprises a transmission gear and a worm which are fixedly connected, the transmission gear is meshed with the shaft teeth, and the worm is meshed with the worm wheel; when the gas meter counting transmission structure is used on gas meters with different specifications, shaft tooth pieces with different specifications can be replaced to be connected with driven wheels, and the transmission pieces with different specifications are replaced to be matched with the shaft tooth pieces so as to be suitable for the gas meters with different specifications, so that the production cost of the gas meters is reduced.

Description

Gas meter counting transmission structure

Technical Field

The utility model relates to the technical field of gas meters, in particular to a gas meter counting transmission structure.

Background

The diaphragm gas meter is a common gas metering instrument, when flowing gas passes through the diaphragm gas meter, the flowing gas is blocked by pipeline friction and a mechanism, pressure difference is generated at two ends of an inlet and an outlet of the gas meter, the diaphragm of the diaphragm gas meter is pushed to move in a metering chamber by the pressure difference, and a valve mechanism is driven to perform coordinated valve distribution, so that the movement of the diaphragm can be continuously and reciprocally performed. The film type gas meter converts linear reciprocating motion into circular motion through an internal mechanical structure, outputs the circular motion through a machine core, and then drives a character wheel assembly comprising mechanical idler wheels through a transmission structure through the circular motion output by the machine core; when the diaphragm reciprocates once, a certain amount of gas is discharged, and finally the roller rotates through a counting unit, so that the roller rotation metering display effect of the character wheel assembly is realized; the film type gas meter in the prior art comprises various specifications, and metering data of the film type gas meter are also different, for example, common movement revolution volumes comprise 3.5 liters, 11 liters and the like, and common character wheel assemblies comprise 5+3 types, 6+2 types and the like; therefore, membrane gas meters of various specifications need to be individually designed, opened and manufactured with various transmission structures for adaptation, so that the production cost of the gas meter is high.

Based on the above, the applicant considers designing a gas meter counting transmission structure for reducing the production cost of the gas meter.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: how to provide a gas meter counting transmission structure for reducing the production cost of the gas meter.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The gas meter counting transmission structure comprises a machine core and a character wheel assembly, wherein the machine core comprises an output shaft extending out of a gas meter body, and one end of the character wheel assembly is provided with a worm wheel; the device also comprises a shaft tooth piece and a transmission piece which are rotatably arranged;

The output shaft is connected with a driving wheel, and the shaft tooth piece is detachably connected with a driven wheel meshed with the driving wheel; the gear assembly is characterized in that shaft teeth are arranged on the shaft teeth part, the transmission part comprises a transmission gear and a worm which are fixedly connected, the transmission gear is meshed with the shaft teeth, and the worm is meshed with the worm wheel.

The technical scheme has the following working principle and advantages that:

When the gas meter runs, the movement stretches out of the output shaft of the gas meter body to rotate, so that the driving wheel is driven to rotate; the driving wheel is meshed with the driven wheel, so that the driven wheel can be driven to rotate when the driving wheel rotates; the driven wheel is connected to the shaft gear, so that the driven wheel can be brought to the shaft gear and the shaft gear on the shaft gear to rotate when rotating; the shaft teeth are meshed with the transmission gear in the rotating piece, and the worm in the transmission piece is meshed with the turbine on the character wheel assembly, so that the turbine can rotate when the shaft teeth rotate, and then the worm is brought to the rotation of the character wheel assembly to display metering data; and the driven wheel is detachably connected with the shaft tooth piece, so when the gas meter counting transmission structure is used on gas meters with different specifications, the shaft tooth piece with different specifications can be replaced to be connected with the driven wheel, and the transmission piece with different specifications is replaced to be matched with the shaft tooth piece so as to be suitable for the gas meters with different specifications, thereby reducing the production cost of the gas meters.

Further, the counter frame is provided with an accommodating space for installing the character wheel assembly.

Further, a fixed cylinder detachably connected with the shaft tooth piece and a fixed shaft detachably connected with the transmission piece are arranged in the counter frame, the shaft tooth piece comprises a connecting shaft rotatably arranged in the fixed cylinder, and the transmission piece is provided with a shaft hole rotatably connected with the fixed shaft.

Further, the outer side wall of the gas meter body is fixedly connected with a connecting bottom plate, the counter frame is detachably connected with the connecting bottom plate, and the gas meter further comprises a counter cover for accommodating the counter frame, and the counter cover is detachably connected with the connecting bottom plate; the counter cover comprises a contact part, a connecting bracket and a transparent window corresponding to the character wheel assembly.

Further, the shaft tooth piece comprises a connecting protrusion, a connecting hole is formed in the center of the driven wheel, and the inner side wall of the connecting hole is in threaded connection with the outer side wall of the connecting protrusion.

Further, the number of teeth of the driven wheel is 40, the number of teeth of the driving wheel is 32, and the number of teeth of the worm wheel is 20.

Further, when the revolution volume of the movement is 3.5 liters and the character wheel assembly is 6+2; the shaft tooth piece is a first shaft tooth piece, the transmission piece is a first transmission piece, the number of shaft tooth teeth in the first shaft tooth piece is 14, the worm in the first transmission piece is a head worm, and the number of transmission gear teeth in the first transmission piece is 16.

Further, when the revolution volume of the movement is 3.5 liters and the character wheel assembly is 5+3; the shaft tooth piece is a second shaft tooth piece, the transmission piece is a second transmission piece, the number of shaft tooth teeth in the second shaft tooth piece is 35, the worm in the second transmission piece is a triple worm, and the number of transmission gear teeth in the second transmission piece is 12.

Further, when the revolution volume of the movement is 11 liters and the character wheel assembly is 6+2; the shaft tooth piece is a third shaft tooth piece, the transmission piece is a third transmission piece, the number of shaft tooth teeth in the third shaft tooth piece is 11, the worm in the third transmission piece is a triple worm, and the number of transmission gear teeth in the third transmission piece is 12.

Further, the diameter of the driven wheel is 29-61 mm, and the diameter of the driving wheel is 24-49 mm.

Drawings

FIG. 1 is a schematic diagram showing a three-dimensional structure of a gas meter body and a gas meter counting transmission structure according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing a gas meter body and a gas meter counting transmission structure in a second perspective structure (except for a counter cover);

FIG. 3 is a schematic perspective view of a counter cover according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a gas meter counting transmission structure (except a counter cover) according to an embodiment of the utility model;

FIG. 5 is a schematic top view of FIG. 4;

FIG. 6 is a schematic perspective view of a counter frame according to an embodiment of the present utility model;

FIG. 7 is a schematic perspective view of a counter frame, a character wheel assembly, a shaft gear member and a transmission member according to an embodiment of the present utility model;

FIG. 8 is a schematic bottom view of a first gear according to an embodiment of the present utility model;

FIG. 9 is a schematic perspective view of a first driving gear according to an embodiment of the present utility model;

FIG. 10 is a schematic bottom view of a first tooth according to an embodiment of the present utility model;

FIG. 11 is a schematic perspective view of a first shaft tooth according to an embodiment of the utility model;

FIG. 12 is a schematic perspective view of a second embodiment of a counter frame, a character wheel assembly, a shaft gear member and a transmission member;

FIG. 13 is a schematic bottom view of a second gear according to an embodiment of the present utility model;

fig. 14 is a schematic perspective view of a second transmission gear according to an embodiment of the utility model;

FIG. 15 is a schematic bottom view of a second axial tooth according to an embodiment of the present utility model;

FIG. 16 is a schematic perspective view of a second axial tooth according to an embodiment of the present utility model;

FIG. 17 is a schematic perspective view of a third counter frame, a character wheel assembly, a shaft gear member and a transmission member according to an embodiment of the present utility model;

FIG. 18 is a schematic bottom view of a third gear according to an embodiment of the present utility model;

Fig. 19 is a schematic perspective view of a third transmission gear according to an embodiment of the present utility model;

FIG. 20 is a schematic bottom view of a third tooth according to an embodiment of the present utility model;

FIG. 21 is a schematic perspective view of a third tooth according to an embodiment of the present utility model;

In the above figures: 10. a gas meter body; 12. a connecting bottom plate; 20. a counter rack; 21. a fixed cylinder; 22. a fixed shaft; 30. a counter cover; 31. a contact portion; 32. a connecting bracket; 33. a transparent window; 40. an output shaft; 50. a character wheel group; 51. a worm wheel; 60. a character wheel transmission wheel set;

100. A driving wheel;

200. driven wheel;

300. A shaft tooth; 301. a connection protrusion; 302. a connecting shaft; 303. a clamping joint; 310. a first shaft tooth; 311. a first shaft tooth; 320. a second shaft tooth; 321. a second shaft tooth; 330. a third shaft tooth; 331. a third shaft tooth;

400. A transmission member; 401. a shaft hole; 410. a first transmission member; 411. a first transmission gear; 412. a first drive worm; 420. a second transmission member; 421. a second transmission gear; 422. a second drive worm; 430. a third transmission member; 431. a third transmission gear; 432. and a third drive worm.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Referring to fig. 1 to 21 together, the present embodiment provides a gas meter counting transmission structure, which comprises a movement and a character wheel set 50, wherein the movement comprises an output shaft 40 extending out of a gas meter body 10, and one end of the character wheel set 50 is provided with a worm wheel 51; it also includes a rotatably mounted shaft tooth 300 and a transmission 400;

The driving wheel 100 is connected to the output shaft 40, and the driven wheel 200 meshed with the driving wheel 100 is detachably connected to the shaft tooth 300; the shaft teeth 300 is provided with shaft teeth, and the transmission member 400 includes a transmission gear and a worm fixedly connected, the transmission gear is engaged with the shaft teeth, and the worm is engaged with the worm wheel 51.

In this embodiment, when the gas meter operates, the movement extends out of the output shaft 40 of the gas meter body 10 to rotate, so as to drive the driving wheel 100 to rotate; since the driving wheel 100 is engaged with the driven wheel 200, the driven wheel 200 can be driven to rotate when the driving wheel 100 rotates; since the driven wheel 200 is connected to the shaft gear 300, the driven wheel 200 can be brought to the shaft gear 300 and the shaft teeth thereon to rotate when rotating; since the shaft teeth are engaged with the transmission gear in the rotating member and the worm in the transmission member 400 is engaged with the worm wheel on the character wheel assembly 50, the worm wheel can rotate when the shaft teeth 300 rotate, and then the shaft teeth are brought to the rotation of the character wheel assembly 50 and the metering data is displayed; and the driven wheel 200 is detachably connected with the shaft gear 300, so when the gas meter counting transmission structure is used on gas meters with different specifications, the shaft gear 300 with different specifications can be replaced to be connected with the driven wheel 200, and the transmission piece 400 with different specifications can be replaced to be matched with the shaft gear 300 so as to be suitable for the gas meters with different specifications, thereby reducing the production cost of the gas meters.

Preferably, as shown in fig. 2, 4, 5, 6, 7, 12 and 17, the counter rack 20 is further comprised, and an accommodating space for installing the character wheel assembly 50 is provided inside the counter rack 20: the character wheel set 50 assembly includes a character wheel set 50 and a character wheel drive set 60 for driving the character wheels therebetween, which are conventional in the art, and in particular, shafts in the character wheel set 50 and the character wheel drive set 60 are fixedly mounted on the counter frame 20.

Preferably, as shown in fig. 4, 5, 6, 7, 12 and 17, a fixed cylinder 21 detachably connected to a shaft gear 300 and a fixed shaft 22 detachably connected to a transmission member 400 are provided in the counter frame 20, the shaft gear 300 includes a connecting shaft 302 rotatably provided in the fixed cylinder 21, the transmission member 400 is provided with a shaft hole 401 rotatably connected to the fixed shaft 22, and the shaft gear 300 and the transmission member 400 are rotatably mounted by being provided with the fixed cylinder 21 and the fixed shaft 22, respectively; specifically, the end of the shaft tooth 300, which is connected with the shaft 302, is provided with a clamping connector 303, and when the shaft tooth 300 is connected with the fixed cylinder 21, the clamping connector 303 at the end of the connecting shaft 302 passes through the connecting cylinder to be clamped, so that the shaft tooth 300 can be quickly assembled and disassembled; when the transmission piece 400 is installed, the fixing shaft 22 penetrates into the transmission piece 400 to be provided with the shaft hole 401, so that the installation can be completed, and the transmission piece 400 can be quickly disassembled and assembled.

Preferably, as shown in fig. 2, the outer side wall of the gas meter body 10 is fixedly connected with a connecting bottom plate 12, and the counter frame 20 is detachably connected with the connecting bottom plate 12; so that the components inside the counter frame 20 are stably disposed on the gas meter body 10.

Preferably, as shown in fig. 1 and 3, the gas meter counting transmission structure further comprises a counter cover 30 accommodating the counter frame 20, the counter cover 30 being detachably connected with the connection base plate 12; the counter cover 30 includes a contact portion 31, a connection bracket 32, and a transparent window 33 corresponding to the character wheel assembly 50; the counter cover 30 can protect the counter frame 20 and its components when connected to the connection base plate 12; the transparent window 33 on the counter cover 30 can facilitate the staff to visually observe the data displayed by the character wheel set 50 from the outside; the contact part 31 arranged on the counter cover 30 corresponds to the data acquisition module in the existing counting, and the connecting bracket 32 is used for being connected with the data acquisition module, so that the data acquisition module can conveniently acquire and send the metering data of the gas meter.

Preferably, as shown in fig. 4, 5, 7, 11, 12, 16 and 21, the shaft tooth 300 includes a connection protrusion 301, a connection hole is formed at the center of the driven wheel 200, and an inner side wall of the connection hole is in threaded connection with an outer side wall of the connection protrusion 301; the shaft tooth 300 and the driven wheel 200 are in threaded connection through the connecting protrusion 301 and the connecting hole, so that the connection is firm and the installation and the disassembly are convenient.

Preferably, as shown in fig. 4, 7, 12 and 17, the number of teeth of the driven wheel 200 is 40; the number of teeth of the driving wheel 100 is 32; the number of teeth of the turbine gear used in the character wheel assembly 50 is 20.

Embodiment one:

As shown in fig. 7 to 11, when the revolution volume of the movement is 3.5 liters and the character wheel assembly 50 is 6+2; the shaft gear 300 is a first shaft gear 310, the transmission member 400 is a first transmission member 410, the number of teeth of the first shaft gear 311 in the first shaft gear 310 is 14, the first transmission worm 412 in the first transmission member 410 is a head worm, and the number of teeth of the first transmission gear 411 in the first transmission member 410 is 16.

When the gas meter of the G10 in the prior art uses a movement with a revolution volume of 3.5 liters and 50 character wheel sets of 6+2 type, namely, the movement drives the driving wheel 100 to rotate for one circle to indicate that the actual flow is 3.5 liters; the first 6 digits of the character wheel assembly 50 are m3, the resolution of the last digit is 0.01m3, the flow q=10×0.01m 3=0.1 m 3=100L (liters) of one revolution of the character wheel at the end of the character wheel assembly 50

At this time, gear output relation calculation: 3.5L× (40/32) × (16/14) x (20/1) =10L

Wherein:

3.5L means that the actual flow is 3.5L when the movement output wheel rotates one circle;

40/32 represents the meshing transmission of the driven wheel 200 and the driving wheel 100, the number of teeth of the driving wheel 100 is 32, and the number of teeth of the driven wheel 200 is 40;

16/14 means that the first transmission member 410 is engaged with the first shaft gear 310 in transmission, the number of teeth of the first shaft gear 310 is 14, and the number of teeth of the first transmission member 410 is 16;

20/1 represents the meshing transmission of the worm wheel and the worm of the second transmission member 420, the number of the worm heads of the second transmission member 420 is one, and the number of the teeth of the worm wheel 51 is 20.

Embodiment two:

As shown in fig. 8 to 16, when the revolution volume of the movement is 3.5 liters and the character wheel assembly 50 is 5+3; the shaft gear 300 is a second shaft gear 320, the transmission member 400 is a second transmission member 420, the number of teeth of the second shaft gear 321 in the second shaft gear 320 is 35, the second transmission worm 422 in the second transmission member 420 is a tricot worm, and the number of teeth of the second transmission gear 421 in the second transmission member 420 is 12.

In the prior art, when the gas meters of G6 and G10 use a movement with a revolution volume of 3.5 liters and 50 character wheel sets of 5+3 type, namely the movement drives the driving wheel 100 to rotate for one circle to indicate that the actual flow is 3.5 liters; the first 5 digits of the character wheel assembly 50 are m3, the resolution of the last digit is 0.001m3, and the flow q=10×0.001m3=0.01m3=10l (liters) of one revolution of the character wheel at the end of the character wheel assembly 50

At this time, gear output relation calculation: 3.5L× (40/32) × (12/35) x (20/3) =10L

Wherein:

3.5L means that the actual flow is 3.5L when the movement output wheel rotates one circle;

40/32 represents the meshing transmission of the driven wheel 200 and the driving wheel 100, the number of teeth of the driving wheel 100 is 32, and the number of teeth of the driven wheel 200 is 40;

12/35 represents the meshing transmission of the transmission gear of the second transmission member 420 and the shaft teeth of the second shaft tooth member 320, the number of the shaft teeth of the second shaft tooth member 320 is 35 teeth, and the number of the transmission gear of the second transmission member 420 is 12 teeth;

20/3 represents the meshing transmission of the worm wheel and the worm of the second transmission member 420, the number of worm heads of the second transmission member 420 is three, and the number of teeth of the worm wheel 51 is 20.

Embodiment III:

As shown in fig. 17 to 21, when the revolution volume of the movement is 11 liters and the character wheel set 50 is 6+2; the shaft gear 300 is a third shaft gear 330, the transmission member 400 is a third transmission member 430, the number of teeth of the third shaft gear 331 in the third shaft gear 330 is 11, the third transmission worm 432 in the third transmission member 430 is a tricot worm, and the number of teeth of the third transmission gear 431 in the third transmission member 430 is 12.

In the prior art, when the gas meters of G16 and G25 use a movement with a revolution volume of 11 liters and 50 character wheel sets of 6+2 type, namely, the movement drives the driving wheel 100 to rotate for one circle to indicate that the actual flow is 11 liters; the first 6 digits of the character wheel assembly 50 are m3, the resolution of the last digit is 0.01m3, the flow q=10×0.01m 3=0.1 m 3=100L (liters) of one revolution of the character wheel at the end of the character wheel assembly 50

At this time, gear output relation calculation: 11L× (40/32) × (12/11) x (20/3) =10L

Wherein:

11L represents that the actual flow is 11 liters when the movement output wheel rotates one circle;

40/32 represents the meshing transmission of the driven wheel 200 and the driving wheel 100, the number of teeth of the driving wheel 100 is 32, and the number of teeth of the driven wheel 200 is 40;

12/11 represents the meshing transmission of the transmission gear of the third transmission member 430 and the shaft teeth of the third shaft tooth member 330, the number of the shaft teeth of the third shaft tooth member 330 is 11 teeth, and the number of the transmission gear of the third transmission member 430 is 12 teeth;

20/3 represents the meshing transmission of the worm wheel and the worm of the third transmission member 430, the number of the worm heads of the third transmission member 430 is three, and the number of the teeth of the worm wheel 51 is 20.

Specifically, the diameter of the driven wheel 200 is 29mm to 61mm, the diameter of the driving wheel 100 is 24mm to 49mm, and the metering error can be adjusted by adjusting the sizes of the driven wheel 200 and the driving wheel 100 according to external factors such as temperature, so that the metering of the gas meter is more accurate. The details are listed below:

finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (10)

1. The gas meter counting transmission structure comprises a machine core and a character wheel assembly, wherein the machine core comprises an output shaft extending out of a gas meter body, and one end of the character wheel assembly is provided with a worm wheel; the device is characterized by further comprising a shaft tooth piece and a transmission piece which are rotatably arranged;

The output shaft is connected with a driving wheel, and the shaft tooth piece is detachably connected with a driven wheel meshed with the driving wheel; the gear assembly is characterized in that shaft teeth are arranged on the shaft teeth part, the transmission part comprises a transmission gear and a worm which are fixedly connected, the transmission gear is meshed with the shaft teeth, and the worm is meshed with the worm wheel.

2. The gas meter counting transmission structure according to claim 1, further comprising a counter frame, wherein an accommodating space for installing the character wheel assembly is arranged inside the counter frame.

3. The gas meter counting transmission structure according to claim 2, wherein a fixed cylinder detachably connected with the shaft tooth piece and a fixed shaft detachably connected with the transmission piece are arranged in the counter frame, the shaft tooth piece comprises a connecting shaft rotatably arranged in the fixed cylinder, and the transmission piece is provided with a shaft hole rotatably connected with the fixed shaft.

4. The gas meter counting transmission structure according to claim 2, wherein a connecting bottom plate is fixedly connected to the outer side wall of the gas meter body, the counter frame is detachably connected with the connecting bottom plate, and the gas meter counting transmission structure further comprises a counter cover for accommodating the counter frame, and the counter cover is detachably connected with the connecting bottom plate; the counter cover comprises a contact part, a connecting bracket and a transparent window corresponding to the character wheel assembly.

5. The gas meter counting transmission structure according to claim 1, wherein the shaft tooth piece comprises a connecting protrusion, a connecting hole is formed in the center of the driven wheel, and the inner side wall of the connecting hole is in threaded connection with the outer side wall of the connecting protrusion.

6. A gas meter counter drive according to any one of claims 1 to 5, wherein the number of teeth of the driven wheel is 40, the number of teeth of the driving wheel is 32, and the number of teeth of the worm wheel is 20.

7. The gas meter counting transmission structure according to claim 6, wherein the revolution volume of the movement is 3.5 liters, and the character wheel assembly is 6+2; the shaft tooth piece is a first shaft tooth piece, the transmission piece is a first transmission piece, the number of shaft tooth teeth in the first shaft tooth piece is 14, the worm in the first transmission piece is a head worm, and the number of transmission gear teeth in the first transmission piece is 16.

8. The gas meter counting transmission structure according to claim 6, wherein when the revolution volume of the movement is 3.5 liters and the character wheel assembly is 5+3; the shaft tooth piece is a second shaft tooth piece, the transmission piece is a second transmission piece, the number of shaft tooth teeth in the second shaft tooth piece is 35, the worm in the second transmission piece is a triple worm, and the number of transmission gear teeth in the second transmission piece is 12.

9. The gas meter counting transmission structure according to claim 6, wherein when the revolution volume of the movement is 11 liters and the character wheel assembly is 6+2; the shaft tooth piece is a third shaft tooth piece, the transmission piece is a third transmission piece, the number of shaft tooth teeth in the third shaft tooth piece is 11, the worm in the third transmission piece is a triple worm, and the number of transmission gear teeth in the third transmission piece is 12.

10. The gas meter counting transmission structure according to claim 6, wherein the diameter of the driven wheel is 29-61 mm, and the diameter of the driving wheel is 24-49 mm.