CN202770509U - Oscillating quantity detecting device of counter adjusting gear - Google Patents

Abstract

The utility model discloses a detection device for the swing amount of a counter adjusting tooth, which belongs to an instrument detection device. The detection device includes a bottom plate and at least two supporting frames, the first and the second, and the at least two supporting frames are installed on On the base plate, and a counter fixing platform is also arranged on the base plate; the first dial indicator and the second dial indicator are respectively arranged on the at least two supporting frames, and the first dial indicator is horizontal, and the second dial indicator is horizontal. The gauges are installed longitudinally on the first support frame and the second support frame respectively, and the side head of the second dial indicator is in contact with the counter fixing platform along the line between the bottom plate. The utility model provides a detection device for the amount of swing of the counter adjusting teeth, which has a simple structure, uses the detection principle of the dial indicator, and can be used for simultaneous detection of the horizontal and vertical swing amounts of various counters, and is especially suitable for gas meter counters. The detection of vertical and horizontal swings is easy to popularize.

Description

A device for detecting the swing amount of a counter adjusting tooth

technical field

The utility model relates to an instrument detection device, more specifically, the utility model mainly relates to a swing amount detection device of a counter adjusting tooth.

Background technique

At present, the adjustment teeth in the mechanical counter of the gas meter generally have vertical and horizontal swings in the actual use process, which affects the gear transmission, resulting in poor measurement stability of the gas meter. The maximum difference between the multiple measurement errors of each flow point of the gas meter exceeds the range specified by the national standard. The main reason is that the swing of the counter adjustment teeth is too large, and the swing of the counter adjustment teeth will also increase the friction force during gear transmission. Large, resulting in the instability of the gear transmission of the gas meter and reducing the service life of the gas meter. Although all kinds of smart gas meters currently use electronic forms such as single-chip microcomputers to count and display on LCD screens, membrane gas meters using mechanical counters are still one of the mainstream gas meters used on a large scale at present. Therefore, how to detect mechanical The longitudinal and lateral swings of the adjusting teeth of the counter before delivery or assembly are still a difficult problem for gas meter manufacturers, and it is necessary to conduct further research on it.

Utility model content

One of the purposes of this utility model is to solve the above-mentioned deficiencies, and to provide a detection device for the swing amount of the counter adjustment teeth, in order to solve the problem of the inability to accurately detect the vertical and horizontal swing amounts of the mechanical counter adjustment teeth in the prior art, thereby making it There are great hidden dangers in actual use, which will affect the internal transmission performance of the gas meter and reduce the service life of the gas meter.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

The utility model provides a device for detecting the swing amount of counter adjusting teeth. The detection device includes a base plate and at least two support frames, the first and the second. The at least two support frames are installed on the base plate, and the base plate A counter fixing platform is also provided; the at least two support frames are respectively provided with a first dial gauge and a second dial gauge, and the first dial gauge is horizontal and the second dial gauge is vertically installed on the On the first support frame and the second support frame, and along the line between the side head of the second dial indicator and the bottom plate, the counter fixing platform is in contact.

A further technical solution is: the angle between the first dial indicator and the second dial indicator is 85 to 95 degrees.

A further technical solution is: the first dial indicator is parallel to the horizontal line, and the second dial indicator is perpendicular to the horizontal line.

A further technical solution is: the second dial indicator is installed on the second support frame through the support rod, and the second support frame is provided with a fixing hole axially matched with the support rod, and the second support Fixing screw holes are also arranged on the frame, and the central axes of the fixing screw holes and the central axes of the fixing holes are perpendicular to each other.

A further technical solution is: the first dial indicator is installed on the first support frame through the support block, and the first support frame is provided with a slot-shaped hole that cooperates with the support block, and the support block passes through the slot-shaped hole It can drive the first dial gauge to move up and down.

A further technical solution is: the upper part of the counter fixing platform is provided with a groove.

A further technical solution is: any position inside the groove is also provided with a plurality of fixing grooves matching with the protrusions at the lower end of the counter.

A further technical solution is: the counter fixing platform is detachably installed on the bottom plate.

A further technical solution is: the counter fixing platform is fixed on the bottom plate by screws.

Compared with the prior art, one of the beneficial effects of the utility model is: after the counter is placed on the counter fixing platform on the bottom plate of the detection device, the dial indicators installed horizontally and vertically can simultaneously detect and read out the adjustment teeth of the counter. The swing amount in the vertical and horizontal directions is detected before the counter leaves the factory or assembled, so as to avoid putting the counter with excessive swing amount of the adjusting teeth into use. The stability of the counter measurement is improved, the balance between the counter gear and the output gear of the instrument movement is ensured, and the reliability of the gear transmission is strong. At the same time, the swing amount detection device of the counter adjustment tooth provided by the utility model has a simple structure , using the detection principle of the dial indicator, it can be used for the simultaneous detection of the horizontal and vertical swings of various counters, and is especially suitable for the detection of the vertical and horizontal swings of gas meter counters, and is easy to popularize.

Description of drawings

Fig. 1 is a schematic structural view for illustrating an embodiment of the present invention;

Fig. 2 is a schematic diagram of the component structure of the counter used to illustrate the use of an embodiment of the present invention.

Detailed ways

First of all, let’s explain the "period indicator" mentioned repeatedly in the utility model. The dial indicator belongs to a kind of measuring tool, and its English translation is Dial Indicators. It is a universal length measuring tool made of precision rack and pinion mechanism. . It is usually composed of measuring head, measuring rod, shockproof spring, rack, gear, hairspring, round dial and pointer. The dial indicator was made by B.C. Ames of the United States in 1890. Commonly used for shape and position errors and length measurement of small displacements. There are 100 equal division scales printed on the round dial of the commonly used dial indicator at present, that is, each division value is equivalent to the movement of the measuring rod by 0.01 mm. If there are 1000 equal division scales printed on the round dial, each division value is 0.001 mm, and this measuring tool is called a dial gauge. Changing the shape of the measuring head and matching with the corresponding bracket can make the deformed varieties of the dial indicator, such as the thickness dial indicator, the depth dial indicator and the inner diameter dial indicator, etc. If a lever is used instead of a rack, a lever dial indicator and a lever dial indicator can be made, which have a small range of indication but high sensitivity. In addition, their measuring head can be rotated within a certain angle, which can adapt to the measurement in different directions, and has a compact structure. They are suitable for measuring the shape and position errors of outer circles, small holes and grooves that are difficult to measure with ordinary dial gauges.

The dial gauge is a relatively high-precision measuring tool. It can only measure relative values, but cannot measure absolute values. It is mainly used to measure shape and position errors, and can also be used for precise alignment when installing workpieces on machine tools. The reading accuracy of the dial indicator is 0.01mm. When the measuring rod of the dial indicator moves up or down by 1 mm, the gear transmission system drives the large pointer to rotate one circle, and the small pointer to rotate one grid. The dial has 100 equally divided divisions on the circumference, and the reading value of each division is 0.01mm. The reading of each division of the small pointer is 1mm. The amount of change in the reading of the pointer during measurement is the amount of change in size. The dial can be rotated so that the large pointer is aligned with the zero mark when measuring. The method of reading is: first read the scale line that the small pointer turns (that is, the millimeter integer), then read the scale line that the big pointer turns (that is, the decimal part), and multiply by 0.01, and then add the two to get the measured value.

Below in conjunction with accompanying drawing, the utility model is further elaborated.

What Fig. 1 shows is the structure schematic diagram of an embodiment of the utility model, referring to Fig. 1, a kind of counter adjustment gear swing detection device provided by the utility model, the detection device includes a bottom plate 1 and a first One and the second two support frames, the two support frames are installed on the base plate 1, and the counter fixed platform 2 is also provided on the base plate 1; the first dial indicator 3 is respectively arranged on the at least two support frames and the second dial gauge 4, and the first dial gauge 3 is horizontal, and the second dial gauge 4 is vertically installed on the first support frame 5 and the second support frame 6, and the second dial gauge 4 The side head 41 is in contact with the counter fixing platform 2 along the line between the bottom plate 1 . It should be noted that the first bracket 5 and the second bracket 6 mentioned in this embodiment are only provided for installing the first dial gauge 3 and the second dial gauge 4 on the bottom plate 1, and if necessary, Other brackets for mounting other auxiliary devices can be provided on the base plate 1 .

According to another embodiment of the present utility model, in order to further improve the accuracy of the adjustment teeth of the two dial indicator measuring counters and reduce the measurement error as much as possible, as shown in Figure 1, the first dial indicator 3 and the second hundred The angles between the sub-meters 4 are set at 85 to 95 degrees, and the inventor believes that the optimum value of the angles between them is 90 degrees during the experiment. For the convenience of setting the first dial indicator 3 and the second dial indicator 4 as the aforementioned angle, the horizontal line can be used as a reference, that is, the first dial indicator 3 is installed in a position parallel to the horizontal line, and the second dial indicator 4 Installed in a position perpendicular to the horizontal line.

In the above-mentioned embodiments of the utility model, it has been mentioned that the first dial indicator 3 and the second dial indicator 4 are respectively installed on the first support frame 5 and the second support frame 6, still referring to Fig. 1, they The preferred fixing method on the first support frame 5 and the second support frame 6 is that the first dial indicator 3 is installed on the first support frame 5 by the support block 7, and the first support frame 5 is provided with the support block 7 slotted holes that cooperate with each other, and the support block 7 can drive the first dial gauge 3 to move up and down through the slotted hole 51. And the second dial indicator 4 is installed on the second support frame 6 by the support rod, and the second support frame 6 is provided with the fixed hole that matches with the support rod axial direction, and the described second support frame 6 is also provided with There are fixed screw holes, and the central axes of the fixed screw holes and the central axes of the fixed holes are perpendicular to each other.

With reference to shown in Fig. 1 again, according to another embodiment of the present utility model, in order to facilitate the fixing of the counter on the detection device, a groove 21 also needs to be set on the top of the counter fixing platform 2, and the inventor also needs to set the groove 21 in the process of the experiment. It is found that if the counter cannot be placed on the counter fixed platform 2 stably, there will also be a large difference in the amount of swing detected by the horizontal and vertical dial gauges. Therefore, on the basis of the aforementioned groove 21, it is also necessary to As a further improvement, a plurality of fixing grooves 22 matching with the protrusions at the lower end of the counter are provided at any position inside the groove 21 .

And in order to adapt to counters of different sizes, the counter fixed platform 2 can be fixed on the bottom plate 1 in a detachable form, and the counter fixed platform 2 of different sizes can be replaced after disassembly, and the aforementioned detachable form is more direct. Directly use screws to fix the counter fixing platform 2 on the base plate.

What Fig. 2 shows is the structural schematic diagram of the counter assembly of conventional structure, the specific method that adopts the swing detection device of the counter adjustment tooth 8 of the present utility model to detect is: earlier the counter assembly shown in Fig. 2 is fixed on Fig. 1 On the fixed counter platform 2 of the counter, the raised point at the bottom of the counter is matched with the fixing groove 22 in the groove 21, and the front notch E of the counter cooperates with the B position of the counter fixed platform 2. After the counter assembly is fixed on the counter fixing platform 2, the detection end of the second dial gauge 4 is leaned against the surface of the adjustment tooth 8 of the counter, that is, at C in Figure 2, and the detection end of the first dial gauge 3 is leaned against On the addendum circle of the adjusting tooth 8 of the counter, that is, at D in FIG. 2 . Then turn the adjusting tooth 8 of the counter by hand, and observe the beating values of the pointers of the two dial indicators. When the adjusting tooth 8 rotates for more than one week, the difference between the maximum and minimum values on the dial indicator is Adjust the amount of tooth swing. It is qualified when the swing amount of the adjusting tooth 8 detected by the two dial gauges is 0 to 0.1 mm. And as described above, the measuring range of the dial indicator adopted in the embodiments of the present invention is 0 to 30 millimeters, its minimum scale is 0.01 millimeters, and the precision is 0.01.

References in this specification to "one embodiment", "another embodiment", "embodiment", etc. refer to the specific features, structures or characteristics described in conjunction with the embodiment included in the general description of this application. In at least one embodiment of . The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure or characteristic is described in combination with any embodiment, it should be claimed that realizing such feature, structure or characteristic in combination with other embodiments also falls within the scope of the present invention.

Although the invention has been described herein with reference to a number of illustrative embodiments of the invention, it should be understood that many other modifications and implementations can be devised by those skilled in the art which will fall within the scope of this application. within the scope and spirit of the principles disclosed. More specifically, within the scope of the disclosure, drawings and claims of the present application, various modifications and improvements can be made to the components and/or layout of the subject combination layout. In addition to modifications and improvements in component parts and/or layout, other uses will be apparent to those skilled in the art.

Claims (9)

1. the oscillating quantity pick-up unit of a counter regulating tooth, it is characterized in that: described pick-up unit comprises base plate (1) and first and second at least two bracing frames, at least two bracing frames are installed on the base plate (1), and also are provided with counter stationary platform (2) on the base plate (1); Be respectively arranged with the first dial gauge (3) and the second dial gauge (4) at least on described two bracing frames, and the first dial gauge (3) is laterally, the second dial gauge (4) is and vertically is installed in respectively on the first bracing frame (5) and the second bracing frame (6), and the side head (41) of the second dial gauge (4) is to contacting with counter stationary platform (2) along the line between the base plate (1).

2. the oscillating quantity pick-up unit of counter regulating tooth according to claim 1 is characterized in that: described the first dial gauge (3) is 85 to 95 degree with the second dial gauge (4) angle each other.

3. the oscillating quantity pick-up unit of counter regulating tooth according to claim 1 and 2, it is characterized in that: described the first dial gauge (3) parallels with horizontal line, and the second dial gauge (4) is perpendicular with horizontal line.

4. the oscillating quantity pick-up unit of counter regulating tooth according to claim 1 and 2, it is characterized in that: described the second dial gauge (4) is installed on the second bracing frame (6) by support bar, and the second bracing frame is provided with the fixed orifice that axially matches with support bar on (6), also be provided with fixing threaded hole on described the second bracing frame (6), and the axis of fixing threaded hole is mutually vertical with the axis of fixed orifice.

5. the oscillating quantity pick-up unit of counter regulating tooth according to claim 1 and 2, it is characterized in that: described the first dial gauge (3) is installed on the first bracing frame (5) by back-up block (7), and be provided with the grooved hole that cooperatively interacts with back-up block (7) on the first bracing frame (5), back-up block (7) can drive the first dial gauge (3) by this grooved hole (51) and move up and down.

6. the oscillating quantity pick-up unit of counter regulating tooth according to claim 1, it is characterized in that: the top of described counter stationary platform (2) is provided with groove (21).

7. the oscillating quantity pick-up unit of counter regulating tooth according to claim 6 is characterized in that: the inner optional position of described groove (21) also is provided with a plurality of pickup grooves (22) that match with counter lower end projection.

8. according to claim 1 or the oscillating quantity pick-up unit of 6 described counter regulating teeth, it is characterized in that: described counter stationary platform (2) is installed on the base plate (1) with dismountable form.

9. the oscillating quantity pick-up unit of counter regulating tooth according to claim 8 is characterized in that: described counter stationary platform (2) adopts screw to be fixed on the base plate (1).

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