Mechanical counter for gas meter and gas meter

Abstract

The utility model discloses a mechanical counter for a gas meter and the gas meter. The mechanical counter is good in strength, convenient to disassemble and assemble and simple in structure. According to the technical scheme, the counter comprises a counter wheel carrier, a set of number wheels connected into the counter wheel carrier through a number wheel shaft and a set of carry wheels connected into the counter wheel carrier through a carry wheel shaft, and the carry wheels are meshed with wheel columns on the side faces of the number wheels. The counter wheel carrier is defined by a left side plate, a right side plate, a front side plate and a rear side plate, a digital wheel shaft through hole and a carry wheel shaft through hole are formed in the left side plate, a digital wheel shaft blind hole and a carry wheel shaft blind hole are formed in the right side plate, the two ends of the digital wheel shaft are installed between the digital wheel shaft through hole and the digital wheel shaft blind hole, and the two ends of the carry wheel shaft blind hole are installed in the carry wheel shaft through hole. The two ends of the carry wheel shaft are installed between the carry wheel shaft through hole and the carry wheel shaft blind hole, and the left side plate is provided with a shaft hole cover plate.

Description

Technical Field

[0001] The utility model relates to the field of instruments and meters, in particular to a mechanical counter for a gas meter and a gas meter. Background Art

[0002] A counter is usually installed on the gas meter for counting. The traditional mechanical counter structure includes: a counter wheel frame, a group of digital wheels connected to the counter wheel frame through a digital wheel shaft, and a group of carry wheels connected to the counter wheel frame through a carry wheel shaft, and the carry wheels are engaged with the wheel columns on the side of the digital wheels. Among them, the wheel shaft is usually provided with thinner cylindrical structures at both ends to connect with the shaft holes on the wheel frame. The disadvantages are: 1. The connection is made through thinner cylindrical structures at both ends, which has poor strength and is easily worn, resulting in poor installation accuracy and stability; 2. The disassembly and assembly of the wheel shaft is more troublesome, which easily leads to deformation of the wheel shaft; 2. The overall structure is complex, large in size, and inconvenient to install. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a mechanical counter for a gas meter and a gas meter with good strength, convenient assembly and disassembly and simple structure.

[0004] To solve the above problems, the technical solution adopted by the utility model includes: a counter wheel frame, a group of digital wheels connected to the counter wheel frame through a digital wheel axle, and a group of carry wheels connected to the counter wheel frame through a carry wheel axle, the carry wheels engage with the wheel columns on the sides of the digital wheels, and are characterized in that: the counter wheel frame is surrounded by a left side plate, a right side plate, a front side plate, and a rear side plate, the left side plate is provided with a digital wheel axle through hole and a carry wheel axle through hole, the right side plate is provided with a digital wheel axle blind hole and a carry wheel axle blind hole, the two ends of the digital wheel axle are installed between the digital wheel axle through hole and the digital wheel axle blind hole, the two ends of the carry wheel axle are installed between the carry wheel axle through hole and the carry wheel axle blind hole, the left side plate is provided with an axis hole cover plate, one end of the axis hole cover plate is provided with a hook, and the other end is provided with a buckle, and the left side plate is provided with a hanging hole matching the hook and a clamping hole matching the buckle.

[0005] The mechanical counter for the gas meter is characterized in that a blind hole seat is provided on one side of the upper end of the right side plate, a mounting column is provided in the middle of the upper end, and the carry wheel shaft blind hole is arranged on the blind hole seat.

[0006] The mechanical counter for the gas meter is characterized in that screw holes are provided on the front side plate and the rear side plate.

[0007] The mechanical counter for the gas meter is characterized in that: both ends of the front side plate or the rear side plate are provided with card slots.

[0008] The mechanical counter for the gas meter is characterized in that a positioning plate is provided at the end of the right side plate, and a positioning hole and a positioning column are provided on the positioning plate.

[0009] A gas meter, characterized in that: the gas meter is equipped with any one of the above-mentioned mechanical counters for gas meters.

[0010] The mechanical counter and gas meter for the utility model have the following advantages: 1. The wheel axle with complete ends is installed between the wheel axle through hole and the wheel axle blind hole, and is sealed by the shaft hole cover plate at the end, and the shaft hole cover plate is connected to the left side plate through a hook and a buckle, so that the wheel axle is more convenient to disassemble and assemble, and the wheel axle is stronger; 2. The overall structure is simple, compact, stable, and easy to install.

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a mechanical counter for a gas meter of the utility model;

[0013] Figure 2 It is a cross-sectional view of a mechanical counter for a gas meter of the utility model;

[0014] Figure 3 It is an exploded view of the mechanical counter for the gas meter of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the wheel frame of the counter of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the shaft hole cover plate of the utility model. DETAILED DESCRIPTION Embodiment 1:

[0017] like Figures 1 to 5As shown, the mechanical counter for gas meter of the utility model comprises a counter wheel frame 1, a group of digital wheels 3 connected to the counter wheel frame 1 through a digital wheel shaft 2, and a group of carry wheels 5 connected to the counter wheel frame 1 through a carry wheel shaft 4, wherein the carry wheel 5 engages with the wheel column 6 on the side of the digital wheel 3. The working principle between the digital wheel 3 and the carry wheel 5 is a well-known technology and will not be described here. The counter wheel frame 1 is surrounded by a left side plate 7, a right side plate 8, a front side plate 9, and a rear side plate 10. The left side plate 7 is provided with a digital wheel shaft through hole 11 and a carry wheel shaft through hole 12, and the right side plate 8 is provided with a digital wheel shaft blind hole 13 and a carry wheel shaft blind hole 14. The digital wheel shaft 2 is inserted through the side of the digital wheel shaft through hole 11, so that the two ends of the digital wheel shaft 2 are installed between the digital wheel shaft through hole 11 and the digital wheel shaft blind hole 13. The carry-in axle 4 is inserted from the carry-in axle through hole 12, so that the two ends of the carry-in axle 4 are installed between the carry-in axle through hole 12 and the carry-in axle blind hole 14. The side of the left side plate 7 is provided with an axle hole cover plate 15 covering the digital axle through hole 11 and the carry-in axle through hole 12. The axle hole cover plate 15 is provided with a hook 16 at one end and a buckle 17 at the other end. The left side plate 7 is provided with a hanging hole 18 matched with the hook 16 and a clamping hole 19 matched with the buckle 17. When assembling, first buckle the hook 16 into the hanging hole 18, and then press the buckle 17 into the clamping hole 19.

[0018] Preferably, a blind hole seat 20 is provided on one side of the upper end of the right side plate 8, a mounting column 21 is provided in the middle of the upper end of the right side plate 8, and the carry wheel shaft blind hole 14 is provided on the blind hole seat 20. The mounting column 21 is used to connect with the mounting hole in the gas meter housing, which is convenient for installation and ensures a compact size.

[0019] Preferably, the front side plate 9 and the rear side plate 10 are both provided with screw holes 22. Screws are inserted into the screw holes 22 to fix the counter in the housing of the gas meter.

[0020] Preferably, both ends of the front side plate 9 or the rear side plate 10 are provided with a clamping groove 23. The clamping groove 23 is used to clamp with the clamping rib in the gas meter housing to improve the stability of the installation.

[0021] Preferably, a positioning plate 24 is provided at the end of the right side plate 8, and a positioning hole 25 and a positioning column 26 are provided on the positioning plate 24. The positioning hole 25 and the positioning column 26 are connected with the corresponding positioning column and positioning hole in the gas meter housing to improve the stability of the installation. Embodiment 2:

[0022] like Figures 1 to 5As shown, a gas meter of the utility model is installed with the mechanical counter for the gas meter described in Example 1. The specific installation method is a well-known technology and will not be described here.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A mechanical counter for a gas meter, comprising a counter wheel frame (1), a group of digital wheels (3) connected to the counter wheel frame (1) via a digital wheel shaft (2), and a group of carry wheels (5) connected to the counter wheel frame (1) via a carry wheel shaft (4), wherein the carry wheels (5) engage with wheel columns (6) on the side of the digital wheels (3), and characterized in that: The counter wheel frame (1) is surrounded by a left side plate (7), a right side plate (8), a front side plate (9), and a rear side plate (10). The left side plate (7) is provided with a digital wheel axle through hole (11) and a carry wheel axle through hole (12). The right side plate (8) is provided with a digital wheel axle blind hole (13) and a carry wheel axle blind hole (14). Two ends of the digital wheel axle (2) are mounted between the digital wheel axle through hole (11) and the digital wheel axle blind hole (13). Two ends of the carry wheel axle (4) are mounted between the carry wheel axle through hole (12) and the carry wheel axle blind hole (14). The left side plate (7) is provided with an axle hole cover plate (15). One end of the axle hole cover plate (15) is provided with a hook (16) and the other end is provided with a buckle (17). The left side plate (7) is provided with a hanging hole (18) matched with the hook (16) and a buckle hole (19) matched with the buckle (17).

2. The mechanical counter for a gas meter according to claim 1, characterized in that: A blind hole seat (20) is provided on one side of the upper end of the right side plate (8), and a mounting column (21) is provided in the middle of the upper end, and the carry wheel shaft blind hole (14) is arranged on the blind hole seat (20).

3. The mechanical counter for a gas meter according to claim 1, characterized in that: The front side plate (9) and the rear side plate (10) are both provided with screw holes (22).

4. The mechanical counter for a gas meter according to claim 1, characterized in that: Both ends of the front side plate (9) or the rear side plate (10) are provided with slots (23).

5. The mechanical counter for a gas meter according to claim 1, characterized in that: A positioning plate (24) is provided at the end of the right side plate (8), and a positioning hole (25) and a positioning column (26) are provided on the positioning plate (24).

6. A gas meter, characterized in that: The gas meter is equipped with a mechanical counter for a gas meter as described in any one of claims 1 to 5.

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