CN213422282U

CN213422282U - Transmission system of gas meter

Info

Publication number: CN213422282U
Application number: CN202022749970.5U
Authority: CN
Inventors: 韦雅玲; 黎林; 李波; 刘琴; 李筱雅
Original assignee: CHONGQING SHANCHENG GAS EQUIPMENT CO LTD
Current assignee: CHONGQING SHANCHENG GAS EQUIPMENT CO LTD
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-06-11
Anticipated expiration: 2030-11-24

Abstract

The utility model relates to a transmission system of gas table, include: the gear assembly (11), the drive assembly (12) connected with said gear assembly (11); the transmission assembly (12) comprises: a connecting rod (121) connected with the gear assembly (11), a rocker arm (122) connected with the connecting rod (121), a vertical shaft (123) connected with the rocker arm (122) and a folded plate (124) connected with the vertical shaft (123); the rocker arm (122) and the flap (124) can be synchronously swung in the horizontal direction. Through adopting the combination setting mode of transmission assembly and gear assembly, make the transmission system in the gas table can become the rotation of gear train with horizontal swing like this. Meanwhile, the rocker arm and the folded plate swing, so that the motion consistency of the gear assembly and the transmission assembly is ensured, and the gear assembly is beneficial to ensuring the smooth operation of the whole transmission system.

Description

Transmission system of gas meter

Technical Field

The utility model relates to a transmission system especially relates to a transmission system of gas table.

Background

The diaphragm gas meter is a flow meter for metering combustible gas, the gas is fed into metering chamber from gas inlet to drive diaphragm to freely swing, and the movement of diaphragm component is converted into the rotary movement of rotary valve so as to control the sequential inflation and exhaust of all metering chambers to make the gas meter continuously and circularly move. In the membrane type gas meter, a metering chamber is divided into two parts by a flexible membrane, and the two parts are alternately communicated with a gas inlet or a gas outlet by rotating a valve; the diaphragm is moved by the gas pressure in the measuring chamber in a telescopic manner, so that the two parts of gas in the measuring chamber are alternately sucked and discharged. Usually, a gas meter has two metering chambers, and how to continuously and accurately output the alternating motion in each metering chamber to a rotary valve is the key of the output metering of the gas meter. Therefore, a transmission system with a reasonable structure is required to be designed for the diaphragm gas meter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transmission system of gas table.

In order to realize the above utility model purpose, the utility model provides a transmission system of gas table, include: the gear assembly is connected with the transmission assembly;

the transmission assembly includes: the gear assembly comprises a connecting rod connected with the gear assembly, a rocker arm connected with the connecting rod, a vertical shaft connected with the rocker arm and a folded plate connected with the vertical shaft;

the rocker arm and the flap can synchronously swing along the horizontal direction.

According to one aspect of the present invention, one end of the connecting rod is movably connected to the gear assembly;

two opposite ends of the rocker arm are respectively and movably connected with the other end of the connecting rod and fixedly connected with one end of the vertical shaft;

one end of the folded plate is fixedly connected with the other end of the vertical shaft in a structure matching manner.

According to an aspect of the invention, the flap comprises: the first folding plate part and the second folding plate part are fixedly connected with the first folding plate part;

the first flap portion is disposed obliquely with respect to the second flap portion.

According to one aspect of the utility model, one end of the first folding plate part, which is far away from the second folding plate part, is nested with the vertical shaft, and a positioning shaft is arranged on one side of the first folding plate part, which is far away from the vertical shaft;

and a connecting rod is arranged at one end of the second folding plate part, which is far away from the first folding plate part.

According to an aspect of the utility model, along the horizontal direction, the location axle with the axis line of connecting rod with contained angle between the symmetry axis of rocking arm is 39.

According to an aspect of the present invention, the transmission assembly is provided with two.

According to an aspect of the present invention, the gear assembly comprises: the device comprises a rotating wheel, a third wheel in meshed connection with the rotating wheel, a thumb wheel in meshed connection with the third wheel, and a stop piece arranged adjacent to the thumb wheel;

the connecting rod is movably connected with the rotating wheel, and the connecting position on the rotating wheel is eccentrically arranged.

According to an aspect of the present invention, the runner includes: the gear structure comprises a first connecting disc, a gear structure and a connecting shaft;

the first connecting disc, the gear structure and the connecting shaft are coaxially arranged in sequence along the axial direction of the rotating wheel;

the connecting rod is connected with one side of the first connecting disc, which is far away from the gear structure;

the gear structure is meshed with the third wheel.

According to an aspect of the utility model, the thumb wheel includes: the second connecting disc, the rotating shaft and the shifting block;

the rotating shaft and the shifting block are respectively arranged on two opposite sides of the second connecting disc, wherein the rotating shaft and the second connecting disc are coaxially arranged, and the shifting block is arranged at the edge of the second connecting disc;

and a plurality of meshing teeth used for being meshed and connected with the third wheel are arranged on the edge annular array of one side of the second connecting disc, which is provided with the rotating shaft.

According to the utility model discloses an aspect, follows the circumference of second connection pad, the side of shifting block with the shifting block with second connection pad hookup location's tangential direction's contained angle is less than 90.

According to the utility model discloses a scheme sets up the mode through the combination that adopts drive assembly and gear assembly, makes the transmission system in the gas table can become the rotation of gear train with the level swing like this. Meanwhile, the rocker arm and the folded plate swing, so that the motion consistency of the gear assembly and the transmission assembly is ensured, and the gear assembly is beneficial to ensuring the smooth operation of the whole transmission system.

According to the utility model discloses a scheme carries out structure complex fixed connection with vertical scroll and folded plate, like this under the condition that folded plate and the nested setting of vertical scroll, not only can guarantee the stability of connecting, can also effectively guarantee the folded plate around the accuracy of the installation angle of vertical scroll.

According to the utility model discloses a scheme is through the folded plate nestification at the tip of vertical scroll to through the mode that sets up the location axle on the folded plate, realized the accuracy of folded plate with the mounted position, avoided along the vertical scroll axial, the folded plate position is adjusted, and the condition that the folded plate position changes and lead to entire system card pause or wearing and tearing takes place after long-time work, and then is favorable to guaranteeing the stable smooth operation of entire system.

According to the utility model discloses a scheme sets up the axis line of location axle and connecting rod and the contained angle between the symmetry axis of rocking arm into 39, under the condition that has realized gear assembly 11 can full stroke steady operation, has guaranteed that the folded plate can be in the extreme position of horizontal direction second folded plate portion in the operation process and has flushed the position mutually with the inner wall of installation cavity in the gas table, and then can move extreme position to the other structures (like the diaphragm) that link to each other in guaranteeing the installation cavity and have improved favourable guarantee.

According to the utility model discloses a scheme sets the shifting block to the inclined plane in the side of circumference direction, and the position that is farther from the center in the process of thumb wheel pivoted like this contacts with other matched with structure more timely to it is favourable to eliminate the response lag and the slip of follow-up other matched with structure (like the magnetic drive wheelset that is used for the count). Meanwhile, the side face of the shifting block in the circumferential direction is provided with the inclined face, so that the shifting block can still be in a contact state with other matched structures (such as a magnetic transmission wheel set for counting) after the whole transmission system stops running, and the counting precision of the gas meter in continuous running is facilitated.

Drawings

FIG. 1 is a block diagram schematically illustrating a transmission system according to one embodiment of the present invention;

FIG. 2 is a schematic representation of a connection configuration of a rocker arm, vertical shaft and flap according to one embodiment of the present invention;

FIG. 3 is a block diagram schematically illustrating a vertical shaft according to one embodiment of the present invention;

fig. 4 is a diagram schematically illustrating the relative positions of a rocker arm and a flap in a horizontal direction according to an embodiment of the present invention;

FIG. 5 is a side view schematically illustrating a transmission system according to an embodiment of the present invention;

fig. 6 is a sectional view schematically showing a wheel according to an embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In describing embodiments of the present invention, the terms "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and other terms are used in an orientation or positional relationship shown in the associated drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the present invention is not limited to the following embodiments.

With reference to fig. 1 and 2, according to the present invention, the utility model discloses a transmission system of a gas meter, includes: a gear assembly 11 and a transmission assembly 12 connected with the gear assembly 11. In the present embodiment, the transmission assembly 12 includes: a link 121 connected to the gear assembly 11, a rocker arm 122 connected to the link 121, an upright shaft 123 connected to the rocker arm 122, and a flap 124 connected to the upright shaft 123. In the present embodiment, the swing arm 122 and the flap 124 can be synchronously swung in the horizontal direction. In the present embodiment, the swing arm 122 is swung in the horizontal direction by the swing of the flap 124 in the horizontal direction. And then under the horizontal wobbling condition of rocking arm, connecting rod 121 drives gear assembly 11 and rotates to realize the output measurement of gas in the gas table.

According to the utility model discloses, set up the mode through the combination that adopts drive assembly and gear assembly, make like this that transmission system in the gas table can become the rotation of gear train with the level swing. Meanwhile, the swing arm 122 and the folding plate 124 swing to ensure the consistent movement of the gear assembly 11 and the transmission assembly 12, which is beneficial to ensuring the smooth operation of the whole transmission system.

As shown in fig. 1, according to an embodiment of the present invention, one end of the connecting rod 121 is movably connected to the gear assembly 11. In the present embodiment, a connecting shaft is provided on the gear assembly 11, and the end position of the connecting rod 121 is connected to the connecting shaft in a rotating manner. In the present embodiment, opposite ends of the rocker arm 122 are movably connected to the other end of the link 121 and are fixedly connected to one end of the vertical shaft 123. In the present embodiment, one end of the rocker arm 122 is provided with a connecting shaft, and the other end of the link 121 is also rotatably connected to the connecting shaft. The other end of the rocker arm 122 is provided with a connecting sleeve which is vertical to the rocker arm 122 and is fixedly connected with the upper end of the vertical shaft 123.

As shown in fig. 3, according to one embodiment of the present invention, one end of the flap 124 is fixedly connected to the other end of the vertical shaft 123. In this embodiment, the vertical shaft 123 is provided with a plurality of strip-shaped protrusions 1231 arranged at intervals along the circumference on the outer surface of the end connected to the flap 124, and the roughness and the angle of the installation position are made uniform by the plurality of strip-shaped protrusions 1231 provided on the vertical shaft. In this embodiment, the flap 124 nests with the vertical shaft 123.

Through the arrangement, the vertical shaft and the folded plate are fixedly connected in a structure fit mode, so that under the condition that the folded plate 124 and the vertical shaft 123 are arranged in a nested mode, not only can the connection stability be guaranteed, but also the accuracy of the installation angle of the folded plate around the vertical shaft can be effectively guaranteed.

As shown in fig. 2, according to an embodiment of the present invention, the flap 124 includes: a first flap portion 1241, and a second flap portion 1242 fixedly connected to the first flap portion 1241. In the present embodiment, the first flap portion 1241 is disposed to be inclined with respect to the second flap portion 1242. In the present embodiment, an end of the first flap portion 1241 away from the second flap portion 1242 is nested with the vertical shaft 123, and a positioning shaft 1241a is provided on a side of the first flap portion 1241 away from the vertical shaft 123. In the present embodiment, a connection rod 1242a is provided at an end of the second flap part 1242 remote from the first flap part 1241.

Through the arrangement, the folded plate 124 is nested at the end part of the vertical shaft 123, and the positioning shaft 1241a is arranged on the folded plate 124, so that the accuracy of the folded plate 124 and the installation position is realized, the situation that the whole system is blocked or abraded due to the fact that the position of the folded plate 124 is adjusted along the axial direction of the vertical shaft 123 and the position of the folded plate 124 is changed after long-time work is avoided, and the stable and smooth operation of the whole system is further ensured.

As shown in fig. 4, according to an embodiment of the present invention, an included angle between a line connecting the axes of the positioning shaft 1241a and the connecting rod 1242a and the symmetry axis of the swing arm 122 is 39 ° in the horizontal direction. In the present embodiment, the rocker arm 122 has an axisymmetric structure. The axis of symmetry of the rocker arm 122 is parallel to its length.

Through the arrangement, an included angle between the axis connecting line of the positioning shaft 1241a and the connecting rod 1242a and the symmetric axis of the rocker arm 122 is set to 39 degrees, and under the condition that the gear assembly 11 can stably run in a full stroke, the limit position of the second flap part 1242 in the horizontal direction in the running process of the flap 124 can be in a position flush with the inner wall of the mounting cavity in the gas meter, so that the beneficial guarantee is improved for ensuring that other structures (such as diaphragms) connected in the mounting cavity can run to the limit position.

As shown in fig. 1, according to an embodiment of the present invention, two transmission assemblies 12 are provided.

Through the arrangement, the gear assembly 11 can stably run in a full stroke.

As shown in fig. 1, according to an embodiment of the present invention, the gear assembly 11 includes: the wheel 111, the third wheel 112 meshed with the wheel 111, the thumb wheel 113 meshed with the third wheel 112, and the stopper 114 disposed adjacent to the thumb wheel 113. In the present embodiment, the link 121 is movably connected to the runner 111, and is eccentrically disposed at a connection position on the runner 111.

Referring to fig. 5 and 6, according to an embodiment of the present invention, the runner 111 includes: a first coupling disc 1111, a gear arrangement 1112 and a coupling shaft 1113. In the present embodiment, the first coupling disc 1111, the gear structure 1112, and the coupling shaft 1113 are coaxially provided in this order in the axial direction of the rotor 111. In this embodiment, the link 121 is connected to a side of the first linkage disc 1111 remote from the gear structure 1112. In this embodiment, the gear structure 1112 meshes with the third wheel 112.

As shown in fig. 1 and 5, according to an embodiment of the present invention, the thumb wheel 113 includes: second connecting disc 1131, axis of rotation 1132, shifting block 1133. In this embodiment, the rotation shaft 1132 and the dial 1133 are respectively disposed on two opposite sides of the second connection pad 1131, wherein the rotation shaft 1132 is disposed coaxially with the second connection pad 1131, and the dial 1133 is disposed at the edge of the second connection pad 1131. In the present embodiment, a plurality of engaging teeth 1134 for engaging with the carrier 112 are provided on the edge ring array of the second coupling disk 1131 on the side where the rotation shaft 1132 is provided.

As shown in fig. 5, according to an embodiment of the present invention, along the circumference of the second connecting pad 1131, the included angle between the side surface of the shifting block 1133 and the tangential direction of the connecting position of the shifting block 1133 and the second connecting pad 1131 is less than 90 °.

With the above arrangement, the side surface of the dial 1133 in the circumferential direction is configured as an inclined surface, so that the farther from the center during the rotation of the dial wheel, the more timely the contact with other cooperating structures is, thereby being beneficial to eliminating the response lag and slip of other cooperating structures (such as a magnetic transmission wheel set for counting). Meanwhile, the side face of the shifting block 1133 in the circumferential direction is provided with an inclined face, which is also beneficial to the fact that after the whole transmission system stops running, the shifting block can still be in a contact state with other matched structures (such as a magnetic transmission wheel set for counting), and is beneficial to the counting precision of the gas meter during continuous running.

The foregoing is merely exemplary of embodiments of the present invention and reference should be made to the apparatus and structures herein not described in detail as it is known in the art to practice the same in general equipment and general methods.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A transmission system for a gas meter, comprising: the gear assembly (11), the drive assembly (12) connected with said gear assembly (11);

the transmission assembly (12) comprises: a connecting rod (121) connected with the gear assembly (11), a rocker arm (122) connected with the connecting rod (121), a vertical shaft (123) connected with the rocker arm (122) and a folded plate (124) connected with the vertical shaft (123);

the rocker arm (122) and the flap (124) can be synchronously swung in the horizontal direction.

2. A transmission system according to claim 1, wherein one end of the connecting rod (121) is movably connected to the gear assembly (11);

two opposite ends of the rocker arm (122) are respectively movably connected with the other end of the connecting rod (121) and fixedly connected with one end of the vertical shaft (123);

one end of the folded plate (124) is fixedly connected with the other end of the vertical shaft (123) in a structure matching manner.

3. The transmission system according to claim 2, wherein said flap (124) comprises: a first flap portion (1241), a second flap portion (1242) fixedly connected to the first flap portion (1241);

the first flap portion (1241) is disposed obliquely with respect to the second flap portion (1242).

4. A transmission system according to claim 3, wherein the end of the first flap portion (1241) remote from the second flap portion (1242) is nestingly connected to the vertical shaft (123), and a positioning shaft (1241a) is provided on the side of the first flap portion (1241) remote from the vertical shaft (123);

and a connecting rod (1242a) is arranged at one end of the second folding plate part (1242) far away from the first folding plate part (1241).

5. A transmission system according to claim 4, characterized in that, in the horizontal direction, the angle between the line connecting the axes of the positioning shaft (1241a) and the connecting rod (1242a) and the axis of symmetry of the rocker arm (122) is 39 °.

6. A transmission system according to any one of claims 1 to 5, characterised in that the transmission assembly (12) is provided in two.

7. A transmission system according to claim 1, wherein the gear assembly (11) comprises: the device comprises a rotating wheel (111), a third wheel (112) in meshed connection with the rotating wheel (111), a thumb wheel (113) in meshed connection with the third wheel (112), and a stop piece (114) arranged adjacent to the thumb wheel (113);

the connecting rod (121) is movably connected with the rotating wheel (111), and the connecting position on the rotating wheel (111) is eccentrically arranged.

8. The transmission system according to claim 7, wherein the runner (111) comprises: a first connecting disc (1111), a gear structure (1112) and a connecting shaft (1113);

the first connecting disc (1111), the gear structure (1112) and the connecting shaft (1113) are coaxially arranged in sequence along the axial direction of the rotating wheel (111);

the connecting rod (121) is connected with one side of the first connecting disc (1111) far away from the gear structure (1112);

the gear structure (1112) is meshed with the third wheel (112).

9. Transmission system according to claim 7 or 8, characterized in that said dial wheel (113) comprises: the second connecting disc (1131), the rotating shaft (1132) and the shifting block (1133);

the rotating shaft (1132) and the shifting block (1133) are respectively arranged on two opposite sides of the second connecting disc (1131), wherein the rotating shaft (1132) and the second connecting disc (1131) are coaxially arranged, and the shifting block (1133) is arranged on the edge of the second connecting disc (1131);

and a plurality of meshing teeth (1134) used for meshing connection with the third wheel (112) are arranged on the edge annular array of one side of the second connecting disc (1131) provided with the rotating shaft (1132).

10. The transmission system according to claim 9, characterized in that along the circumference of the second connecting disc (1131), the side face of the dial (1133) forms an angle of less than 90 ° with the tangential direction of the connecting position of the dial (1133) and the second connecting disc (1131).