Method for automatically aligning diaphragm gas meter error

Abstract

This invention discloses an automatic gear matching method for diaphragm gas meter calibration error, characterized by the following steps: First, obtaining the indication error value and correction gear pair (i.e., driving gear and driven gear) information of a gas meter that has passed initial calibration; Second, selecting the driving gear and driven gear required for error correction based on the indication error and correction gear pair obtained in the first step; Third, sending the driving gear and driven gear obtained in the second step to the corresponding calibration station for manual assembly before subsequent testing. This automatic gear matching method for diaphragm gas meter calibration error can significantly improve the efficiency of gear matching for calibration error correction.

Description

Technical Field

[0001] This invention belongs to the field of diaphragm gas meters, specifically relating to an automatic tooth matching method for diaphragm gas meter calibration error. Background Technology

[0002] A diaphragm gas meter is a volumetric metering instrument used to measure the amount of gas used. It measures gas volumetric flow rate using two flexible diaphragm chambers. Under pressure difference, gas alternately enters the two chambers through a distribution valve, filling them before being discharged to the outlet. Simultaneously, this drives the flexible diaphragms in each chamber to reciprocate. A conversion mechanism transforms this filling and discharging cycle into a corresponding gas volumetric flow rate, which is then transmitted to a counter via a transmission mechanism to complete the gas accumulation metering function. The basic structure of a diaphragm gas meter mainly consists of a casing, diaphragm chambers, a distribution valve, a linkage mechanism, an anti-reverse device, a transmission mechanism, and a counter.

[0003] Diaphragm gas meters are metering instruments, therefore their metering error (indication error) is subject to relatively strict regulations (must meet the relevant provisions of the national standard GB / T 6968-2019 "Diaphragm Gas Meters"). Diaphragm gas meters need to be calibrated (must meet the relevant provisions of the industry standard JJG 577-2012 "Verification Procedure for Diaphragm Gas Meters") to determine whether they meet the error requirements.

[0004] In the current error verification process of diaphragm gas meters, all operations are carried out manually. Based on the gear matching information provided by the error verification equipment, the operator searches for the appropriate gear pair (driving gear and driven gear) from among the many gear pairs (driving gear and driven gear) representing different error correction values ​​on the gear carrier. (When operating in multiple positions, it is easy to pick the wrong gear and install it incorrectly. Although this process can be self-checked, it still results in a loss of production efficiency.) This operation requires the operator to have a high level of proficiency in order to meet the requirements for independent operation or to achieve the required shift output. At the same time, the process of constantly picking up and picking up gear pairs also greatly increases the labor intensity of the employees.

[0005] Based on this, the applicant considered using an automatic tooth feeding method when verifying the error of diaphragm gas meters, so as to reduce the dependence on the speed and skill of manual actions during the error verification process and help the workshop improve product quality and quantity. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to design an automatic tooth matching method for diaphragm gas meter calibration error, so as to reduce the dependence on the speed and skill of manual operation, and help the workshop improve product quality and quantity.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] The automatic tooth matching method for calibrating the error of a diaphragm gas meter is characterized by the following steps:

[0009] Step 1: Obtain the error value of the gas indicator after initial calibration and correct the gear pair;

[0010] The second step is to select the driving gear and driven gear required to correct the error based on the indicated error and the corrected gear pair from the first step.

[0011] The third step involves sending the driving gear and driven gear obtained in the second step to the corresponding calibration station for manual assembly and subsequent testing.

[0012] Compared with existing technologies, the automatic tooth matching method for diaphragm gas meter calibration error of the present invention has the following advantages:

[0013] 1. This technical solution can correct the calibration error before leaving the factory, thereby reducing the dependence on the sensors and software algorithms set in the meter, thus helping to reduce the production cost of a single diaphragm gas meter.

[0014] 2. This method utilizes a diaphragm gas meter calibration error correction gear matching device to select the driving gear and driven gear required for error correction, thereby reducing dependence on the speed and skill of manual operation and helping the workshop improve product quality and quantity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the upper casing of a diaphragm gas meter (those skilled in the art will know that in actual error verification, the diaphragm gas meter is the base meter, which includes a complete metering function, including an upper casing and a lower casing; for the convenience of the public, this diagram is only used to assist in showing the driving gear and driven gear of the direct drive assembly and the counter).

[0016] Figure 2 This is an exploded view of a portion of the upper casing of a diaphragm gas meter. (Those skilled in the art will know that, in actual error verification, the diaphragm gas meter is the base meter, which includes the complete metering function, comprising the upper casing and the lower casing. For ease of public understanding, this diagram is only used to show the driving and driven gears of the direct drive assembly and the counter.)

[0017] Figure 3 This is a flowchart of the automatic tooth matching method for diaphragm gas meter calibration error in this technical solution.

[0018] Figure 4 This is a schematic diagram of the gear fitting device for correcting calibration errors of the diaphragm gas meter in this technical solution.

[0019] Figure 5This is a structural schematic diagram of the main functional component of the diaphragm gas meter calibration error correction gear fitting device in this technical solution.

[0020] Figure 6 This is a structural schematic diagram (top view from the end) of the main structural and functional part of the diaphragm gas meter calibration error correction gear fitting device in this technical solution.

[0021] Figure 7 This is a structural schematic diagram (side-view from below) of the main structural and functional part of the diaphragm gas meter calibration error correction gear fitting device in this technical solution.

[0022] Figure 8 This is a partially enlarged view of the gear fitting device for correcting calibration errors of the diaphragm gas meter in this technical solution.

[0023] Figure 9 This is a partially enlarged view of the gear fitting device for correcting calibration errors of the diaphragm gas meter in this technical solution.

[0024] Figure 10 This is a schematic diagram of the vertical gear storage cylinder in this technical solution.

[0025] Figure 11 This is a schematic diagram of the lower support plate in this technical solution.

[0026] Figure 12 This is a schematic diagram of the discharge plate structure in this technical solution.

[0027] Figure 13 This is a schematic diagram of the intermediate pusher component in this technical solution.

[0028] The diagram is marked as follows:

[0029] A direct drive group

[0030] B counter

[0031] C drive gear

[0032] D driven gear

[0033] E. Tooth storage mechanism: E1 Tooth storage bracket (E10 support frame, E11 upper support plate, E12 lower support plate), E2 Vertical tooth storage cylinder

[0034] F-type tooth selection mechanism: F1 discharge plate, F2 discharge groove (F20 extension end, F21 discharge end), F3 intermediate push tooth component (F30 protrusion, F31 strip guide hole), F4 reset compression spring, F5 transverse movement assembly (F50 guide rail, F51 slider, F52 synchronous belt for transverse movement control (only line drawing in the figure), F53 wheel bracket, F54 driving wheel, F55 driven wheel, F56 control motor), F6 pushing cylinder, F7 pushing block.

[0035] G-feeding mechanism: G1 receiving gear (G10 receiving cylinder, G11 receiving plate), G2 hinge, G3 unloading cylinder

[0036] H drag chain Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings.

[0038] In practical implementation: such as Figure 3 As shown,

[0039] The automatic tooth matching method for calibrating the error of a diaphragm gas meter includes the following steps:

[0040] The first step is to obtain the error value of the gas indicator that passed the initial calibration and to correct the gear pair (i.e., the driving gear and the driven gear);

[0041] The second step is to select the driving gear and driven gear required to correct the error based on the indicated error and the corrected gear pair from the first step.

[0042] The third step involves sending the driving gear and driven gear obtained in the second step to the corresponding calibration station for manual assembly and subsequent testing.

[0043] The verification of the indication error value is existing technology. Please refer to section 7.3.4.4 of the "Verification Procedure for Diaphragm Gas Meters" for the verification method of indication error, which will not be elaborated here.

[0044] The formula for calculating the indication error of the verification is:

[0045]

[0046] Where: δ - indication error; Vi - indicated value of the gas meter being tested; Vs - actual value of the gas meter being tested.

[0047] Diaphragm gas meters are typically tested at low, medium, and high flow rates. The low flow rate testing flow rate is generally around q. min -3q min The flow rate is selected from between; the calibration flow rate point for medium flow is 0.2q. max The high-flow calibration point is q. max .

[0048] Therefore, during production, based on the initial calibration error of each flow point indicated by the error detection equipment, the detection software, in conjunction with a pre-set gear error value library (the correction range and gear correction value vary from manufacturer to manufacturer), calculates and matches to obtain the optimal gear error correction value, so that the diaphragm gas meter after gear matching meets the metering requirements.

[0049] For example, the rotational volume Vc of a diaphragm gas meter represents the gas volume in the meter's measuring chamber during one working cycle. The rotational volume Vc determines the value of Vi; therefore, changing the rotational volume Vc of the gas meter is equivalent to changing Vi, thus changing δ and correcting the indication error. Hence, the following formula can be derived:

[0050]

[0051] Where: ε - rotational volume deviation rate (indication error); i - designed transmission ratio of the master-slave gear pair; Vc - designed rotational volume. From this, the transmission ratio of the adjustable gear pair corresponding to the indicated error range can be obtained (see Table 1 below).

[0052] Table 1 lists the transmission ratios of adjustable gear pairs corresponding to the indicated error ranges.

[0053]

[0054] From Table 1 above, we can deduce the adjustable gear pair transmission ratio (gear ratio, gear transmission ratio; each manufacturer can set multiple corresponding gear pair storage units based on the common indication errors of the diaphragm gas meters they produce). Thus, the corresponding driving gear and driven gear can be selected according to the transmission ratio to correct the indication error, so that the re-geared diaphragm gas meter meets the metering requirements.

[0055] The advantages of the automatic tooth matching method for diaphragm gas meter calibration error in this embodiment are:

[0056] 1. This technical solution can correct the calibration error before leaving the factory, thereby reducing the dependence on the sensors and software algorithms set in the meter, thus helping to reduce the production cost of a single diaphragm gas meter.

[0057] 2. This method utilizes a diaphragm gas meter calibration error correction gear matching device to select the driving gear and driven gear required for error correction, thereby reducing dependence on the speed and skill of manual operation and helping the workshop improve product quality and quantity.

[0058] In the second step, the driving gear and driven gear required for error correction are selected using the diaphragm gas meter calibration error correction gear matching device.

[0059] In practice, since the first step usually uses a separate computer hardware and dedicated software, the second step, which involves selecting the gear pair based on the first step, can be achieved by using an additional computer hardware to obtain a screenshot of the graphical user interface of the "dedicated software". OCR (computer vision) can be used to identify the information in the screenshot, thereby selecting the gears based on the required gear matching information.

[0060] In this embodiment, the gas meter calibration error correction gear fitting device includes:

[0061] A gear storage mechanism is used to store multiple master and slave gears with different gear errors;

[0062] The gear selection mechanism is used to select the master gear and slave gear with the required gear error from the gear storage mechanism;

[0063] A gear feeding mechanism is used to deliver the selected gear to a predetermined position;

[0064] The controller is used to drive the tooth selection mechanism and the tooth feeding mechanism according to preset instructions.

[0065] Compared with existing technologies, the advantages of the diaphragm gas meter calibration error correction gear fitting device in this technical solution are:

[0066] The controller can be used to automate the calibration error correction and tooth matching work of diaphragm gas meters, reducing the degree of manual intervention, the workload and intensity of manual tooth matching, and significantly improving the efficiency and accuracy of tooth matching.

[0067] A first embodiment of a toothed device for correcting calibration errors in a diaphragm gas meter, not shown in the figure:

[0068] The gear storage mechanism consists of multiple storage boxes with top openings (each storage box has a different number and arrangement). Each storage box can store a single type of gear or store a master gear and a driven gear with initial gear error (the master gear and the driven gear are separated by a partition).

[0069] The tooth selection mechanism and tooth delivery mechanism are robotic arms equipped with machine vision systems, and the robotic arms are controlled by a controller to select and deliver teeth.

[0070] A second embodiment of the gear fitting device for correcting calibration errors of diaphragm gas meters, not shown in the figure:

[0071] The gear storage mechanism and gear selection mechanism are vibrating feeders, and a dedicated vibrating feeder is used for different gears.

[0072] The tooth feeding mechanism is a conveyor belt mechanism, and the conveyor belt of the conveyor belt mechanism is used to receive the gears output from the discharge port of each set of vibrating feeding discs; the conveyor belt mechanism is controlled by a motor controller to start and stop.

[0073] The controller controls the vibration of each vibrating feeder to achieve gear selection, and the controller controls the conveyor belt mechanism to transport the main gear and the driven gear to the predetermined position.

[0074] A third preferred embodiment of the diaphragm gas meter calibration error correction gear fitting device, such as... Figures 4 to 13 As shown:

[0075] The difference between this embodiment and the above embodiments is that:

[0076] The gear storage mechanism of the diaphragm gas meter calibration error correction gear matching device includes a horizontally fixed straight gear storage bracket and a plurality of paired vertical gear storage cylinders installed along the length of the gear storage bracket; wherein, in each pair of vertical gear storage cylinders, one is used to store the main gear and the other is used to store the driven gear; and the main gear and the driven gear in each pair of vertical gear storage cylinders correspond to different correction error values.

[0077] Each vertical gear storage cylinder is used to store multiple identical gears stacked vertically, and its internal cross-section is only large enough for a single gear to pass through; each vertical gear storage cylinder is equipped with a discharge port and an outlet port that allows a single gear to be removed at a time.

[0078] Compared with existing technologies, the tooth storage mechanism of the diaphragm gas meter calibration error correction tooth matching device in this technical solution has the following advantages:

[0079] 1. The vertical gear storage cylinder is arranged with different gear errors along the gear storage bracket, and the main gear and driven gear are set in pairs, which makes it easy to form a sequence arrangement. This facilitates the formation of accurate coordinates and positioning on the horizontal plane, creating favorable conditions for better and more accurate selection of the main gear and driven gear with specific gear errors in the future.

[0080] 2. The vertical gear storage cylinders are set in pairs, with one cylinder in each pair used to store the main gear and the other used to store the driven gear. This makes the driving gear and driven gear with specific gear errors close to each other, which can speed up the selection of gear pairs and help improve the efficiency of subsequent gear selection and delivery.

[0081] 3. The internal cross-section of the vertical gear storage cylinder can only accommodate a single gear, resulting in a small vertical projection area of ​​the vertical gear storage cylinder on the horizontal plane. This allows for the arrangement of more vertical gear storage cylinders on the same horizontal plane, thus enabling the creation of multiple pairs of vertical gear storage cylinders with different types of gear errors. After the gear pair for correction is installed, the gear matching can correct the calibration error of the diaphragm gas meter, thereby ensuring that the gas meter error meets the national standard requirements.

[0082] The top of the vertical tooth storage cylinder is an open end, which constitutes the discharge port.

[0083] The top of the vertical tooth storage cylinder is an opening, which makes it easy to feed material into the cylinder through the top, making the feeding operation simpler.

[0084] Each vertical gear storage cylinder is made of a transparent, rigid material.

[0085] In practice, the transparent rigid material is made of any one of the following materials: transparent PVC, PP, or glass.

[0086] The vertical gear storage cylinder is made of transparent material, which makes it easier to observe the filling status inside, thus facilitating timely replenishment.

[0087] The tooth storage bracket includes a support frame and an upper support plate and a lower support plate that are fixedly installed on the support frame and have an overall horizontal straight bar structure and are fixed at vertical intervals.

[0088] The upper support plate is provided with insertion holes along its length for inserting each of the opposing tooth storage cylinders;

[0089] The lower support plate is provided with countersunk holes along its length for coaxial insertion of the lower ends of each pair of vertical tooth storage cylinders. The lower end face of each vertical tooth storage cylinder abuts against the stepped surface of the corresponding countersunk hole, and the inner diameter of the lower section of each countersunk hole is greater than or equal to the inner diameter of the lower end of the vertical tooth storage cylinder inserted therein.

[0090] The advantages of using the tooth storage bracket described above, which includes a support frame, an upper support plate, and a lower support plate, are:

[0091] 1. Makes the installation of vertical gear storage cylinders on gear storage supports simpler, faster, and more accurate.

[0092] Each vertical tooth storage cylinder can be inserted into the corresponding insertion hole on the upper support plate and the countersunk hole on the lower support plate. The lower support plate positions and supports the lower end of the vertical tooth storage cylinder, while the upper support plate supports and straightens the upper section of each vertical tooth storage cylinder, preventing each vertical tooth storage cylinder from tilting and ensuring that each vertical tooth storage cylinder can achieve the correct positioning, loading and unloading posture.

[0093] 2. This makes the structure of the vertical tooth storage cylinder, upper support plate, and lower support plate more streamlined, reducing the difficulty of production and processing and construction costs.

[0094] The lower end of each vertical storage cylinder is an opening for material discharge;

[0095] Each vertical gear storage cylinder has a discharge trough spaced at its lower end. The gap between the upper surface of the bottom of each discharge trough and the end face of the adjacent discharge opening constitutes a discharge gap that allows for lateral outward discharge. The height of the discharge gap matches the thickness of a single gear. The discharge outlet is formed between the discharge troughs adjacent to the discharge opening.

[0096] The two ends of the length of each discharge trough are open, the width of each discharge trough is greater than or equal to the inner diameter of each pair of vertical tooth storage cylinders, and the length direction of each discharge trough is consistent with the direction of the line connecting the axes of the adjacent pair of vertical tooth storage cylinders.

[0097] With the above-mentioned discharge trough and discharge gap structure, the selected gear can be easily ejected at once by inserting the pusher component into the discharge gap, making the operation of taking it out of the vertical gear storage cylinder simpler, thus smoothly realizing the operation of taking out a single or a pair of gears from the vertical gear storage cylinder.

[0098] Each of the aforementioned discharge troughs is machined and formed on the upper surface of a long strip-shaped discharge plate.

[0099] In this way, only the entire discharge plate needs to be assembled and fixed to ensure that each discharge slot is stably positioned, thus improving assembly efficiency.

[0100] Preferably, the discharge plate is made of non-metallic material.

[0101] In practice, non-metallic materials can be made of acrylic, PP, PC or ABS.

[0102] By using a non-metallic material for the discharge plate, the weight of the entire structure is reduced while still meeting the requirements for wear resistance, thus saving on procurement costs.

[0103] Preferably, the gear selection mechanism of the diaphragm gas meter calibration error correction gear matching device includes a straight bar-shaped discharge plate; multiple discharge slots are evenly spaced along the length direction on the upper surface of the discharge plate, the length direction of each discharge slot is consistent with the width direction of the discharge plate and both end faces are open ends, forming an insertion end and a discharge end; and the width and height dimensions of each discharge slot are only used to accommodate a single main gear and a single driven gear for calibration error correction.

[0104] It also includes a transverse component and a push component; the moving part on the transverse component can move and position back and forth along the length direction of the discharge plate, and the push component is fixedly installed on the moving part. The push top on the push component can push out the main gear and the driven gear in the single discharge slot through the extension end of each discharge slot and move out from the discharge end.

[0105] Compared with existing technologies, the tooth selection mechanism of the diaphragm gas meter calibration error correction tooth matching device in this technical solution has the following advantages:

[0106] The discharge slots, evenly spaced along the X-axis on the straight-bar discharge plate, provide each slot with accurate X-axis positioning coordinates. This allows the controller to precisely move the components on the transverse assembly, and when aligned with the discharge slot requiring the correct gear alignment, the pusher assembly is activated, thus smoothly completing the gear selection operation.

[0107] The tooth selection mechanism of the diaphragm gas meter calibration error correction tooth matching device also includes an intermediate tooth pusher;

[0108] Each of the discharge troughs has a long strip-shaped intermediate pusher tooth that can be slidably inserted into its extension end. The outer end of the intermediate pusher tooth that is away from the extension end in the length direction is the outer end for pushing. The outer end for pushing is provided with a compression spring for pushing back the intermediate pusher tooth.

[0109] The pushing head on the pushing assembly pushes the outer end of the pushing tooth corresponding to each discharge slot, so that the main gear and the driven gear contained in a single discharge slot can be pushed out from the discharge end of the discharge slot.

[0110] For example, when selecting teeth each time, if the A-structure design is adopted: the structure design of inserting the pusher top of each discharge slot into the moving part of a single transverse component at a time, the pusher top needs to be more accurately aligned with the discharge gap of the relatively narrow discharge slot; this places extremely high demands on the precision of the discharge slot and the insertion part structure, as well as the precision of the transverse and pusher actions, making the structural design difficult and the manufacturing cost high.

[0111] After adopting this preferred technical solution, even if the above-mentioned intermediate pusher is pre-installed at each discharge port, since the intermediate pusher and the discharge trough are slidably connected, it is only necessary to use the pusher top of the pusher assembly to push the outer end of the pusher of the intermediate pusher. Since the pusher top of the pusher assembly and the outer end of the pusher of the intermediate pusher only need to have a projection overlap area in the length direction of the discharge trough to achieve push smoothly, compared with the above A structure design, this solution has greater fault tolerance and makes the tooth selection operation simpler, more accurate and reliable.

[0112] Each intermediate pusher tooth has an upwardly protruding outer end, and a reset compression spring is provided between the inner side of the protruding part and the discharge plate.

[0113] The intermediate pusher tooth component with the above structure has high structural strength and a larger surface area available for pushing at the outer end, making it easier to contact the pusher head on the pusher assembly to achieve pushing.

[0114] In subsequent implementation, it is preferable to install the reset compression spring between the lower support plate and the inner side of the protrusion.

[0115] Each intermediate pusher tooth has a strip-shaped guide hole through its upper surface at the insertion part. The length direction of the strip-shaped guide hole is consistent with the length direction of the discharge groove. A guide limiting protrusion for inserting into the strip-shaped guide hole is fixedly provided in the discharge groove.

[0116] After setting the above-mentioned strip guide hole and guide limiting protrusion, the starting point and ending point of the intermediate push tooth can be limited, and the reciprocating motion of the intermediate push tooth can also be guided, ensuring that the push of the intermediate push tooth can be sustained and reliable.

[0117] In implementation, the first embodiment of the lateral movement component is: using a laterally extendable robotic arm;

[0118] A second embodiment of the lateral movement component can be a linear drive mechanism combining a lead screw and nut with a guide rail.

[0119] In addition, the lateral movement component may also be implemented in the following preferred embodiments:

[0120] The lateral movement assembly includes a guide rail, a slider, a timing belt for lateral movement control, a wheel bracket, a drive wheel, a driven wheel, and a control motor;

[0121] The guide rail is fixedly arranged along the length of the discharge plate, and the slider is slidably mounted on the guide rail. The slider constitutes the moving part on the transverse component.

[0122] The length direction of the timing belt for lateral movement control is consistent with the length direction of the discharge plate, and both ends of the timing belt for lateral movement control are rotatably mounted on the rotary wheel bracket through a driving wheel and a driven wheel; the slider is fixedly connected to the timing belt for lateral movement control through a connector;

[0123] The control motor is connected to the drive wheel.

[0124] The above-mentioned lateral movement assembly uses a control motor to drive the drive wheel, which in turn drives the synchronous belt for lateral movement control to achieve reciprocating motion. This, in turn, drives the slider to move laterally via the connecting parts. Furthermore, the slider is slidably fitted onto the guide rail, thus ensuring the linearity and reliability of the slider's lateral movement over a long period.

[0125] The pushing assembly includes a pushing cylinder and a pushing block. The pushing cylinder is fixedly installed on the slider, and the entire pushing cylinder is located below the discharge plate. The extension and retraction direction of the extension rod of the pushing cylinder is consistent with the width direction of the discharge plate.

[0126] The outer end of the telescopic rod of the pushing cylinder is located behind the extension end of each of the discharge slots on the discharge plate and the pushing block is fixedly installed thereon. The outer side of the pushing block extends upward to form the pushing top.

[0127] The preferred technical solution adopts a structure that combines the above-mentioned push cylinder and push block to achieve the push, which has the advantages of compact structure and reliable operation, and can also better ensure the reliability of the tooth selection operation.

[0128] The tooth feeding mechanism of the tooth feeding device for the calibration error correction of diaphragm gas meters includes a transverse moving component and a tooth receiving component;

[0129] The traverse assembly includes a moving part for reciprocating movement and positioning along the length of the discharge plate of the main output gear and the driven gear.

[0130] The gear connector is used to receive the main gear and the driven gear that fall from the upper hollow position;

[0131] The tooth-connecting component is mounted on the moving part of the transverse assembly and together they are used to achieve tooth connection and tooth feeding.

[0132] The working principle of the tooth feeding mechanism of the diaphragm gas meter calibration error correction tooth fitting device in this technical solution is as follows:

[0133] First, the transverse component moves and positions itself along the length of the discharge plate;

[0134] Secondly, once the moving part of the transverse component reaches the discharge chute position of the main gear and the driven gear, the connecting gear installed on the transverse component can be used to catch the falling main gear and driven gear.

[0135] Finally, the lateral movement component moves the gear receiving part to the predetermined position, opens the material receiving plate at the lower end of the gear receiving part, and places the gear pair into the material receiving container used by the employees, allowing the operators to take materials from it and complete the gear feeding operation.

[0136] Compared with existing technologies, the tooth feeding mechanism of the diaphragm gas meter calibration error correction tooth feeding device in this technical solution has the following advantages:

[0137] 1. It has a relatively simple composition and structure, and is easy to process and manufacture.

[0138] 2. It is relatively simple and reliable to control: The transverse component is controlled by the controller to control the transverse positioning of the moving parts. The controller can know the position of the selection tooth and the tooth on the discharge plate in advance according to the preset instructions, so it can accurately realize the tooth selection and tooth connection operation, and smoothly deliver the tooth after the tooth connection is completed.

[0139] The first embodiment of the toothed connector is not shown in the figure:

[0140] The upper section of the toothed component has a receiving cylinder, and the lower end is equipped with a receiving plate;

[0141] The upper end of the receiving cylinder is an open end, forming a receiving opening; the outer surface of the receiving cylinder is fixedly connected to the slider through a connector;

[0142] The receiving plate and the lower end of the receiving cylinder have an output port for the gear to be removed.

[0143] The aforementioned receiving cylinder structure can effectively receive materials through the top receiving opening, load materials and guide gears through its own cylinder body; it can also achieve better fixed assembly and connection with connecting parts through the larger area on the outer side of its own cylinder body.

[0144] The receiving plate installed on the lower side of the receiving cylinder allows the gears to fall and converge there, and facilitates the output of the gears by opening and closing the receiving plate.

[0145] The second embodiment of the toothed component, such as Figure 7 and Figure 8 As shown:

[0146] The toothed component is also provided with a bottom active unloading structure, which includes a hinge and an unloading cylinder.

[0147] The receiving plate is an elongated strip structure extending along the width of the discharge plate. The rear end of the receiving plate in the length direction is connected to the outer side of the bottom of the receiving cylinder in a rotatable manner through the hinge.

[0148] The receiving plate has upward-facing retaining edges on both sides in the width direction;

[0149] One end of the unloading cylinder is fixedly mounted on the outer side of the receiving cylinder via a hinge shaft, and the other end of the unloading cylinder is rotatably connected to the outer side of the adjacent receiving plate via a hinge shaft.

[0150] In this embodiment, the side of the receiving plate that discharges material is called the front side, and the side of the receiving plate that is opposite to the front side is called the rear side.

[0151] With the above-mentioned bottom active unloading structure, after the moving part of the transverse component receives the material and moves to the predetermined position, the unloading cylinder can be extended to cause the receiving plate to flip downward around the hinge and actively unload the main gear and the driven gear on the receiving plate. In this way, the unloading can be accelerated and the next gear receiving and feeding operation can be carried out, which helps to improve the work efficiency.

[0152] The transverse component in the gear feeding mechanism includes a guide rail, a slider, a synchronous belt for transverse control, a wheel bracket, a driving wheel, a driven wheel, and a control motor;

[0153] The guide rail is fixedly arranged along the length of the discharge plate, and the slider is slidably mounted on the guide rail. The slider constitutes the moving part on the transverse component.

[0154] The length direction of the timing belt for lateral movement control is consistent with the length direction of the discharge plate, and both ends of the timing belt for lateral movement control are rotatably mounted on the rotary wheel bracket through a driving wheel and a driven wheel; the slider is fixedly connected to the timing belt for lateral movement control through a connector;

[0155] The control motor is connected to the drive wheel.

[0156] The above-mentioned lateral movement assembly uses a control motor to drive the drive wheel, which in turn drives the synchronous belt for lateral movement control to achieve reciprocating motion. This, in turn, drives the slider to move laterally via the connecting parts. Furthermore, the slider is slidably fitted onto the guide rail, thus ensuring the linearity and reliability of the slider's lateral movement over a long period.

[0157] In this technical solution, it is preferable that the gear selection mechanism and the gear feeding mechanism use the same set of transverse components. This not only simplifies the system structure and reduces the system volume to a minimum, but also reduces the overall system's structural complexity and control difficulty, and fully improves the utilization rate of the transverse components.

[0158] The tooth feeding mechanism also includes a push assembly fixedly installed on the slider. The push assembly includes a push cylinder and a push block. The push cylinder is fixedly installed on the slider, and the entire push cylinder is located below the discharge plate. The extension and retraction direction of the extension rod of the push cylinder is consistent with the width direction of the discharge plate.

[0159] The outer end of the telescopic rod of the pushing cylinder is located behind each of the discharge slots on the discharge plate and the pushing block is fixedly installed thereon. The outer side of the pushing block extends upward to form the pushing top.

[0160] The preferred technical solution adopts a structure that combines the above-mentioned push cylinder and push block to achieve the push, which has the advantages of compact structure and reliable operation, and can better ensure the reliability of the tooth selection operation.

[0161] During implementation, it also includes a drag chain installed along the length of the discharge plate. The drag chain is equipped with a pushing cylinder, a discharging cylinder, and control sensor cables and pipes, so that each cable and pipe can move synchronously with the slider, which can play a role in protecting each cable and pipe for a long time.

[0162] The above are merely preferred embodiments of the present invention. It should be noted that any modifications and improvements made by those skilled in the art without departing from the present technical solution should also be considered to fall within the scope of protection claimed in this claim.

Claims

1. An automatic tooth matching method for calibrating the error of a diaphragm gas meter, characterized in that: The process includes the following steps: First, obtaining the initial calibration error value of the gas meter and the corrected gear pair; Second, based on the error value and corrected gear pair obtained in the first step, selecting the driving gear and driven gear required for error correction using the diaphragm gas meter calibration error correction gear matching device; Third, sending the driving gear and driven gear obtained in the second step to the corresponding calibration station for manual assembly and subsequent testing; The diaphragm gas meter calibration error correction gear matching device includes: a gear storage mechanism for storing multiple main gears and driven gears with different gear errors; The gear storage mechanism includes a horizontally fixed straight gear storage bracket and multiple pairs of vertical gear storage cylinders installed along the length of the gear storage bracket; wherein, in each pair of vertical gear storage cylinders, one is used to store the main gear and the other is used to store the driven gear. A gear selection mechanism is used to select the master gear and driven gear with the required gear error from the gear storage mechanism. The gear selection mechanism includes a straight-bar-shaped discharge plate. Multiple discharge slots are evenly spaced along the length of the upper surface of the discharge plate. The length direction of each discharge slot is consistent with the width direction of the discharge plate, and both ends are open, forming an insertion end and a discharge end. The width and height of each discharge slot are only used to accommodate a single master gear and a single driven gear for calibration error correction. A gear feeding mechanism is used to deliver the selected gear to a predetermined position. The gear feeding mechanism includes a transverse component and a gear receiving component. The transverse component includes a guide rail, a slider, a synchronous belt for transverse control, a rotating wheel bracket, a driving wheel, a driven wheel, and a control motor. A controller is used to drive the gear selection mechanism and the gear feeding mechanism according to preset instructions.

2. The automatic tooth matching method for calibrating the error of a diaphragm gas meter according to claim 1, characterized in that: The master gear and slave gear in each pair of vertical gear storage cylinders have different correction error values; each vertical gear storage cylinder is used to store multiple identical gears stacked vertically and its internal cross-section is only large enough for a single gear to pass through; each vertical gear storage cylinder is equipped with a discharge port and an outlet port that allows a single gear to be removed at a time.

3. The automatic tooth matching method for calibrating the error of a diaphragm gas meter according to claim 2, characterized in that: The tooth storage bracket includes a support frame and an upper support plate and a lower support plate, which are fixedly installed on the support frame and have a horizontally straight bar structure and are fixed at vertical intervals. The upper support plate is provided with insertion holes along its length for inserting each pair of vertical tooth storage cylinders. The lower support plate is provided with countersunk holes along its length for coaxial insertion of the lower ends of each pair of vertical tooth storage cylinders. The lower end face of each vertical tooth storage cylinder abuts against the stepped surface of the corresponding countersunk hole, and the lower section inner diameter of each countersunk hole is greater than or equal to the lower end inner diameter of the vertical tooth storage cylinder inserted therein.

4. The automatic tooth matching method for calibrating the error of a diaphragm gas meter according to claim 2, characterized in that: The lower end of each vertical gear storage cylinder is an open end for discharging material; a discharge trough is provided at intervals on the lower side of the lower end of each vertical gear storage cylinder, and the gap between the upper surface of the bottom of each discharge trough and the end face of the adjacent discharge open end forms a discharge gap for laterally discharging material, the height of which matches the thickness of a single gear; the discharge port is formed between the discharge troughs adjacent to the discharge open end; both ends of the length of each discharge trough are open ends, the width of each discharge trough is greater than or equal to the inner diameter of a pair of adjacent vertical gear storage cylinders, and the length direction of each discharge trough is consistent with the direction of the line connecting the axes of a pair of adjacent vertical gear storage cylinders.

5. The automatic tooth matching method for calibrating the error of a diaphragm gas meter according to claim 1, characterized in that: The gear selection mechanism further includes the transverse moving component and the pusher component; the moving part on the transverse moving component can move and position back and forth along the length direction of the discharge plate, and the pusher component is fixedly installed on the moving part. The pusher on the pusher component can push out the main gear and the driven gear in a single discharge slot through the extension end of each discharge slot and move out from the discharge end.

6. The automatic tooth matching method for calibrating the error of a diaphragm gas meter according to claim 5, characterized in that: The gear selection mechanism further includes an intermediate pusher; a long strip-shaped intermediate pusher is slidably inserted into the extension end of each discharge trough, and the outer end of the intermediate pusher away from the extension end in the length direction is the outer end for pushing, and the outer end for pushing is provided with a compression spring for pushing back the intermediate pusher; the pusher on the pusher assembly pushes the outer end of the intermediate pusher corresponding to each discharge trough, so that the main gear and the driven gear contained in a single discharge trough are pushed out from the discharge end of the discharge trough.

7. The automatic tooth matching method for calibrating the error of a diaphragm gas meter according to claim 1, characterized in that: The transverse component includes a moving part for reciprocating movement and positioning along the length of the output plate of the main gear and the driven gear; the gear receiving part is used to receive the main gear and the driven gear falling from the upper hollow position; the gear receiving part is installed on the moving part of the transverse component and together they are used to realize gear receiving and gear feeding.

8. The automatic tooth matching method for calibrating the error of a diaphragm gas meter according to claim 7, characterized in that: The guide rail is fixedly arranged along the length direction of the discharge plate, and the slider is slidably mounted on the guide rail, which constitutes the moving part on the transverse assembly; the length direction of the transverse control timing belt is consistent with the length direction of the discharge plate, and the two ends of the transverse control timing belt are rotatably mounted on the rotating wheel bracket through a driving wheel and a driven wheel; the slider is fixedly connected to the transverse control timing belt through a connecting piece; the control motor is driven by the driving wheel.

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