Pointer adjusting machine for error adjusting mechanism of diaphragm gas meter movement

Abstract

The application discloses a pointer adjusting machine for an error adjusting mechanism of a diaphragm gas meter core, characterized in that the pointer adjusting machine comprises an adjusting rack and an electric control turntable, the electric control turntable is fixedly installed on a table top of the adjusting rack, the circumferential direction of the electric control turntable is sequentially and intervally provided with a feeding station, a pointer adjusting station, a shooting station and a discharging station, each station is provided with a positioning tool; the feeding station and the discharging station can be cooperatively operated with a material taking and placing mechanical arm; the pointer adjusting station is provided with an adjusting mounting bracket, a cross lifting device and a cross lifting device driving mechanism, the adjusting mounting bracket is fixed on the adjusting rack, the cross lifting device driving mechanism is fixedly installed on the adjusting mounting bracket and is used for driving the cross lifting device to realize vertical lifting and rotation; the shooting station is provided with a camera, the camera is fixedly installed above the disc surface of the electric control turntable and is used for shooting and recording the pointer of the error adjusting mechanism of the diaphragm gas meter core.

Description

Technical Field

[0001] This invention belongs to the field of error adjustment mechanisms for diaphragm gas meter movements, and specifically relates to a pointer adjustment mechanism for an error adjustment mechanism of a diaphragm gas meter movement. Background Technology

[0002] The applicant previously disclosed a "diaphragm gas meter movement error adjustment system and adjustment method" in patent document CN202111381240A. This technical solution discloses a diaphragm gas meter movement error adjustment system and adjustment method. The adjustment system includes a frame and a base plate horizontally set on the frame. The base plate has a slide rail adapted to the bottom of the movement. The movement can slide along the slide rail between the pick-up and drop-off station and the adjustment station. The frame is equipped with a running-in detection component, a positioning component and an adjustment component corresponding to the adjustment station. The running-in detection component is used to perform a running-in test on the movement to be adjusted and compare the test result with a preset standard value. The positioning component is used to limit the position of the pointer on the movement after the running-in test. The adjustment component adjusts the pointer on the movement to be adjusted according to the comparison result.

[0003] Because each diaphragm gas meter movement requires both metering error detection and error correction calibration, the aforementioned "diaphragm gas meter movement error calibration system and method" performs this on the same system and at the same workstation. Error checking must be completed before calibration, resulting in a long dwell time at each workstation. As the production volume of diaphragm gas meters (and corresponding movement production) continues to increase, the aforementioned "diaphragm gas meter movement error calibration system and method" limits the improvement of production efficiency.

[0004] Therefore, it is necessary to consider separating the error testing and calibration of the diaphragm gas meter movement.

[0005] Therefore, it is necessary to consider how to design an independent pointer adjustment mechanism for the error adjustment mechanism of the diaphragm gas meter movement to help improve the efficiency of pointer adjustment. 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 provide an independent pointer adjustment mechanism for the error adjustment mechanism of a diaphragm gas meter movement to help improve the efficiency of pointer adjustment.

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

[0008] A pointer adjustment machine for the error adjustment mechanism of a diaphragm gas meter movement is characterized by comprising an adjustment platform and an electrically controlled turntable, wherein the electrically controlled turntable is fixedly installed on the platform of the adjustment platform; the circumference of the electrically controlled turntable is provided with a feeding station, a pointer adjustment station, a shooting station and a unloading station at intervals, and a positioning fixture for positioning the diaphragm gas meter movement is fixedly installed on the turntable surface corresponding to each station;

[0009] The loading and unloading stations can work in conjunction with the material handling robotic arm.

[0010] The pointer adjustment station is equipped with an adjustment mounting bracket, a cross-shaped jack, and a cross-shaped jack drive mechanism. The adjustment mounting bracket is fixed on the adjustment platform, and the cross-shaped jack drive mechanism is fixedly installed on the adjustment mounting bracket and is used to drive the cross-shaped jack to achieve vertical lifting and rotation.

[0011] A camera is installed at the shooting station. The camera is fixedly mounted above the surface of the electronically controlled turntable and is used to shoot and record the pointer of the error adjustment mechanism of the diaphragm gas meter movement.

[0012] Compared with existing technologies, the pointer adjustment mechanism for the error adjustment mechanism of the diaphragm gas meter movement in this technical solution has the following advantages:

[0013] 1. The structure adopts an electronically controlled turntable installed on the adjustment platform. The turntable is equipped with a feeding station, a pointer adjustment station, a shooting station and a unloading station in sequence in the direction of rotation. This allows the use of a robotic arm to automatically pick up and put in the diaphragm gas meter core, and to achieve continuous pointer adjustment operation with the rotation rhythm of the electronically controlled turntable, thereby improving the efficiency of error adjustment.

[0014] 2. At the pointer calibration station, which is the shooting station, the camera is used to capture the image at the pointer position. The image can then be transmitted to the host computer for collection or machine vision for recognition and recording, thus better realizing the digitization and intelligence of the operation. Attached Figure Description

[0015] Figure 1 Schematic diagram of the structure of a diaphragm gas meter movement

[0016] Figure 2 This is a schematic diagram of the metrology error testing machine in this technical solution.

[0017] Figure 3 for Figure 2 Enlarged view of the area within the dashed box

[0018] Figure 4 This is a schematic diagram of the mechanism loading structure in the metrology error testing machine of this technical solution.

[0019] Figure 5 This is a schematic diagram of the pointer adjustment mechanism in this technical solution.

[0020] Figure 6 This is a schematic diagram of the pointer adjustment mechanism in this technical solution.

[0021] Figure 7 for Figure 6 Enlarged view of the area within the dashed box

[0022] Figure 8 This is a schematic diagram of the pointer adjustment mechanism in this technical solution.

[0023] Figure 9 for Figure 8 Enlarged view of the area within the dashed box

[0024] The diagram is marked as follows:

[0025] 10. Diaphragm gas meter movement: 101 rocker arm, 102 crank, 103 upper edge of the horizontal end of the gas outlet, 104 pointer;

[0026] 20 Measurement Error Testing Machine: 201 Detection Intake Interface, 202 Mounting Plate, 203 Test Layer, 204 Stagnation Container, 205 Sonic Nozzle, 206 Vacuum Container;

[0027] 30. Mechanism loading structure: 301 limiting frame, 302 guide plate, 303 station switching cylinder, 304 mounting base plate, 305 lifting cylinder, 306 horizontal support plate, 307 positioning plate (3071 positioning groove), 308 metering and detection sensor mounting bracket (3081 mounting hole).

[0028] 40 Pointer Adjustment Machine: 401 Adjustment Platform, 402 Electrically Controlled Turntable, 403 Loading Station, 404 Pointer Adjustment Station (4042 V-Type Clamping Block, 4043 Rocker Arm Finger Cylinder, 4044 Limiting Protrusion), 405 Camera Station, 406 Unloading Station, 407 Positioning Fixture (4071 Loading Plate, 4072 Limiting Post, 4073 Guide Post), 408 Material Handling Robotic Arm, 409 Camera;

[0029] 50 Cross-lift drive mechanism: 501 Lifting drive cylinder, 502 Vertical support plate, 503 Vertical guide rail, 504 Slider, 505 Vertical mounting plate, 506 Servo motor, 507 Cross-lift, 508 Intermediate connecting piece, 509 Bearing seat, 510 Positioning cylinder, 511 Convex ring, 512 U-shaped fiber optic sensor, 514 Through-beam fiber optic sensor, 515 Outer support column, 516 Inner support column, 517 Support top plate. Detailed Implementation

[0030] A diaphragm gas meter movement error detection and correction system includes a test bench and a metering error tester and a pointer adjustment machine fixedly installed on the test bench. The metering error tester is used to detect the metering error of the diaphragm gas meter movement.

[0031] The metering error testing machine includes a detection intake port, a stagnation container, a sonic nozzle, a vacuum container, and a vacuum pump, which are sequentially connected in the direction of airflow. The input end of the detection intake port is used to seal and connect with the outlet of the diaphragm gas meter mechanism under test.

[0032] The pointer adjustment mechanism is used to select and adjust the pointer in the error adjustment mechanism of the diaphragm gas meter movement. The pointer adjustment mechanism includes a motor lifting drive mechanism, a servo motor, and a cross-shaped screwdriver that is coaxially fixedly connected to the downward-facing output shaft of the servo motor.

[0033] The frame includes a test frame and an adjustment frame that are independently set up; the measurement error tester is installed on the test frame as a whole, and the pointer adjustment machine is installed on the adjustment frame as a whole, so that the measurement error tester and the pointer adjustment machine form a split structure.

[0034] The advantages of the diaphragm-type gas meter movement error detection and correction system in this technical solution are:

[0035] 1. It is easier to process and manufacture individually, and can be flexibly deployed and used according to actual production conditions, better matching the improvement of production efficiency.

[0036] 2. The measurement error tester and pointer adjustment machine are separate structures, which reduces the time the test core spends at each station of the measurement error tester and pointer adjustment machine; in addition, the separate structure of the measurement error tester and pointer adjustment machine also facilitates the formation of continuous operation processes, forming a production line (continuous process) type of processing, which effectively improves efficiency.

[0037] 3. The measurement error testing machine and the pointer adjustment machine form a separate structure, constituting a production line (continuous process) type of processing, which is easy to combine with the automated production line of the movement to maintain a consistent production cycle, thereby better improving the production efficiency of the automated production line of the movement.

[0038] Adjusting the metering error of a diaphragm gas meter movement is existing technology. Regarding the error adjustment mechanism of a diaphragm gas meter movement, see patent document CN202111381240A, which discloses a "Diaphragm Gas Meter Movement Error Adjustment System and Method". Figure 9Refer to page 6 of the instruction manual for the relevant description of the pointer and the cross groove above it. Alternatively, refer to the technical solution of "Error Adjustment Mechanism of Rotary Valve Diaphragm Gas Meter" shown in announcement number CN200410081528A, where the metering of the diaphragm gas meter movement can be adjusted by inserting a cross screw into the cross groove on the upper surface of the pointer in the error adjustment mechanism and rotating it. Further details are omitted here.

[0039] A metering error testing machine for diaphragm gas meter movement includes a metering error detection station set on a test bench. Each metering error detection station has a detection air intake port above it and a movement loading structure fixedly installed on the lower side of each metering error detection station. The movement loading structure is used to place the diaphragm gas meter movement to be tested into the test bench and to seal the diaphragm gas meter movement with the detection air intake port.

[0040] The detection intake port is vertically fixedly mounted on the mounting plate;

[0041] The mechanism loading structure also includes a lifting cylinder, on which the guide plate is fixedly installed. The lifting cylinder is used to vertically lift the gas outlet on the diaphragm gas meter mechanism and seal it with the detection intake interface directly above.

[0042] The advantages of this technical solution for testing the metering error of diaphragm gas meter mechanisms are:

[0043] 1. Because the metering error testing machine is set up independently of the pointer adjustment mechanism, it will not be adversely affected by the torque and deformation accumulation of the pointer adjustment mechanism. Therefore, it can more persistently ensure the docking accuracy between the gas intake interface and the gas outlet on the diaphragm gas meter movement, thereby better ensuring the measurement accuracy of the metering error.

[0044] 2. Compared with existing technologies, the detection intake interface is always fixedly installed, which can effectively ensure its assembly positioning accuracy; the corresponding cylinder has high repeatability accuracy (repeatability: ±0.01mm) and reliable use, thus also effectively ensuring the precise connection and sealing between the gas outlet on the diaphragm gas meter movement and the detection intake interface directly above.

[0045] In summary, the technical solution used in this metering error testing machine for diaphragm gas meter mechanisms can more consistently ensure the accuracy of metering error measurement for diaphragm gas meter mechanisms.

[0046] At least one horizontally extending test layer is provided in the height direction of the test bench, and multiple measurement error detection stations are arranged side by side at intervals on each test layer.

[0047] In this way, the structural setup of the test layer can be used to make full use of vertical space, save floor space, increase the number of tests that can be performed at one time, and help improve the efficiency of error testing.

[0048] During implementation, the space behind the test bench where each test layer is located is equipped with a stagnation container, a sonic nozzle, a vacuum container, and a vacuum pump that are connected in series with the output end of the test suction interface.

[0049] The number of measurement error detection stations installed on each test layer is an even number.

[0050] This allows for the use of a dual-clamping handpiece to load two diaphragm gas meter movements at once, further improving testing efficiency.

[0051] The mechanism loading structure of the diaphragm gas meter mechanism measurement error testing machine includes a limiting frame, a guide plate, and a station switching cylinder. The limiting frame is fixedly connected to the push rod of the station switching cylinder through an outer vertical bracket and can move back and forth along the length direction of the guide plate under the drive of the station switching cylinder to achieve switching between the loading position and the testing position. The loading position is used to put the diaphragm gas meter mechanism to be tested into the machine. The gas outlet on the diaphragm gas meter mechanism located in the testing position is directly opposite the detection intake interface above it.

[0052] It also includes a mounting substrate, which is an elongated plate structure, with mounting holes provided at both ends along its length.

[0053] The workstation switching cylinder is fixedly mounted on the lower surface of the mounting base plate;

[0054] It also includes a lifting cylinder, which is vertically installed at the midpoint of the upper surface of the mounting base plate along its length.

[0055] The push rod of the lifting cylinder faces upward and is fixedly mounted with a horizontal support plate. The overall length direction of the horizontal support plate is consistent with the length direction of the mounting base plate. The guide plate is fixedly mounted on the upper surface of the horizontal support plate. The length direction of the guide plate is consistent with the overall length direction of the horizontal support plate.

[0056] The advantages of the mechanism loading structure of the diaphragm gas meter mechanism measurement error testing machine in this technical solution are:

[0057] 1. The structure is more compact and ingenious, making full use of the upper and lower surfaces of the mounting base to install the station switching cylinder and the lifting cylinder; while the mounting base constitutes the core component of the installation, it can also achieve the rapid installation of the mechanism loading structure on the test bench through its own quick fixation on the test bench.

[0058] 2. The movement mounting structure features a modular design, connecting seamlessly before assembly onto the test bench, ensuring better assembly precision between its components. Furthermore, assembly on the test bench is simple: just secure the mounting base to the corresponding position using connectors. Therefore, this technical solution offers more convenient and efficient assembly of the movement mounting structure on the test bench.

[0059] A convex positioning plate is fixedly provided on the upper surface of the horizontal support plate near the end of the test position along the length direction. A positioning groove is provided on the side of the upper end of the positioning plate facing the test position. The positioning groove is used for the upper edge of the lateral end of the gas outlet of the diaphragm gas meter movement to be inserted and positioned.

[0060] After the positioning plate is set up, since the positioning plate is fixedly installed on the horizontal support plate, it can rise and fall with the horizontal support plate, which makes the diaphragm gas meter movement better maintain its position during horizontal movement and vertical lifting, and better ensure the accuracy of error testing.

[0061] The mechanism loading structure of the diaphragm gas meter movement measurement error testing machine also includes a metering detection sensor mounting bracket; a sensor mounting bracket is fixedly installed at the end of the horizontal support plate near the test position along its length and at both ends of the horizontal support plate along its width. The upper section of the sensor mounting bracket is bent towards the test position from above the limiting frame, and the end of the bracket protrudes upward to form a sensor mounting part. The sensor mounting part has a mounting hole that runs through the horizontal support plate along its length. The mounting hole is used for inserting a distance sensor, and the detection head of the inserted distance sensor is directly opposite the rocker arm of the diaphragm gas meter movement at the test position at the outermost end of the movement in the thickness direction.

[0062] After further integrating and installing the aforementioned sensor mounting bracket on the horizontal support plate, the integration of the mechanism loading structure can be further improved, the modular multi-functionality can be better realized, the mechanism loading structure can be made more streamlined, and the installation of the measurement and detection sensors on the test bench can be made more convenient, and the setting of the detection position can be more accurate and reliable.

[0063] The upper surface of the guide plate is provided with a guide groove that runs through its own length. The bottom of the guide groove is provided with countersunk mounting holes at intervals along its length. The width of the first groove at the material loading position is greater than the width of the second groove at the test position, and the first groove and the second groove are connected by a guide connecting surface.

[0064] The above guide plate has the advantages of simple structure and easy installation. When it is matched with the guide post at the bottom of the movement, it can achieve an ideal guiding and positioning effect, and better ensure the accurate and reliable displacement of the movement loading structure.

[0065] A pointer adjustment machine for the error adjustment mechanism of a diaphragm gas meter movement includes an adjustment platform and an electronically controlled turntable. The electronically controlled turntable is fixedly installed on the platform of the adjustment platform. The circumference of the electronically controlled turntable is provided with a feeding station, a pointer adjustment station, a shooting station and a unloading station at intervals. A positioning fixture for positioning the diaphragm gas meter movement is fixedly installed on the turntable surface corresponding to each station.

[0066] The loading and unloading stations can work in conjunction with the material handling robotic arm.

[0067] The pointer adjustment station is equipped with an adjustment mounting bracket, a cross-shaped jack, and a cross-shaped jack drive mechanism. The adjustment mounting bracket is fixed on the adjustment platform, and the cross-shaped jack drive mechanism is fixedly installed on the adjustment mounting bracket and is used to drive the cross-shaped jack to achieve vertical lifting and rotation.

[0068] A camera is installed at the shooting station. The camera is fixedly mounted above the surface of the electronically controlled turntable and is used to shoot and record the pointer of the error adjustment mechanism of the diaphragm gas meter movement.

[0069] The pointer adjustment mechanism for the error adjustment mechanism of the diaphragm gas meter movement in this technical solution has the following advantages:

[0070] 1. The structure adopts an electronically controlled turntable installed on the adjustment platform. The turntable is equipped with a feeding station, a pointer adjustment station, a shooting station and a unloading station in sequence in the direction of rotation. This allows the use of a robotic arm to automatically pick up and put in the diaphragm gas meter core, and to achieve continuous pointer adjustment operation with the rotation rhythm of the electronically controlled turntable, thereby improving the efficiency of error adjustment.

[0071] 2. At the pointer calibration station, which is the shooting station, the camera is used to capture the image at the pointer position. The image can then be transmitted to the host computer for collection or machine vision for recognition and recording, thus better realizing the digitization and intelligence of the operation.

[0072] Two pointer calibration stations are arranged at adjacent intervals along the circumference of the electronically controlled turntable.

[0073] In this way, the two gas meter movements equipped with diaphragm can be rotated to two pointer adjustment stations and the pointers can be adjusted simultaneously, thus significantly improving the adjustment efficiency.

[0074] The positioning fixture includes a loading plate, and the loading plate has a placement position in the middle for placing the diaphragm gas meter movement. The placement position has four upward-protruding limiting posts around it for limiting the movement.

[0075] A guide sleeve is fixedly installed on the loading plate around the outer perimeter of the placement position and the limiting post; a guide post is fixedly installed on the surface of the electronically controlled turntable for the guide sleeve to slide into, the top of the guide post is radially outwardly convex and used to limit the guide sleeve; the surface of the electronically controlled turntable directly below the center of the loading plate has clearance holes.

[0076] Correspondingly, a push cylinder is fixedly installed on the table surface of the adjustment frame at the pointer adjustment station. The push plate of the push cylinder faces upward and can be directly aligned with the through hole to lift the loading plate to a predetermined position.

[0077] By adopting the above positioning fixture structure, the lifting height of the loading plate and the diaphragm gas meter movement loaded therein can be precisely controlled at the pointer adjustment station, laying the foundation for accurate locking of the rocker arm and crank of the diaphragm gas meter movement in the future.

[0078] The pointer adjustment station is also equipped with a rocker arm locking mechanism and a crank locking mechanism;

[0079] The rocker arm locking mechanism includes a rocker arm finger cylinder fixed on a bracket. A pair of V-shaped clamping blocks with horizontally facing openings are fixedly installed on the two fingers of the rocker arm finger cylinder. The pair of V-shaped clamping blocks are used to clamp the two sets of rocker arms of the diaphragm gas meter movement at the predetermined position at the widest point in the thickness direction of the movement and to lock the pair of rocker arms.

[0080] The crank locking mechanism includes a rocker arm finger cylinder fixed on a bracket. A pair of limiting protrusions with horizontally facing and inwardly protruding openings are fixedly installed on the two fingers of the crank finger cylinder. The pair of limiting protrusions are used to insert into the concave part of the two sets of cranks of the diaphragm gas meter movement located at the predetermined position on the outside of the movement thickness direction and to lock the cranks.

[0081] The rocker arm locking mechanism and crank locking mechanism mentioned above can simultaneously lock the movable parts on the movement, ensuring that the rocker arm and crank will not move slightly during the adjustment of the pointer, thereby effectively ensuring the accuracy of the pointer adjustment error correction.

[0082] The cross-start drive mechanism of the pointer adjuster includes a fixed part and a moving part;

[0083] The fixed part includes a lifting drive cylinder and a vertical support plate that is vertically fixed above the electric turntable at the pointer adjustment station; the lifting drive cylinder is fixedly installed on one side of the vertical support plate, and a vertical guide rail is fixedly installed on the other side of the vertical support plate.

[0084] The movable part includes a slider, a vertical mounting plate, a servo motor, and a cross-shaped lifting tool; the slider is mounted on the vertical guide rail, and the vertical mounting plate, which is an integral strip, is fixedly mounted on the slider. The vertical mounting plate is driven to the push rod of the lifting drive cylinder through an intermediate connector; the servo motor is fixedly mounted on the vertical mounting plate or the intermediate connector; the output shaft of the servo motor faces downward and is coaxially fixedly connected to the cross-shaped lifting tool.

[0085] The movable part also includes at least two bearing seats fixedly installed on the surface of the vertical mounting plate. The at least two bearing seats are rotatably connected to the intermediate transmission shaft between the servo motor and the cross-shaped starter via bearings, and one of the at least two bearing seats is adjacent to the output shaft of the servo motor, and the other is adjacent to the cross-shaped starter.

[0086] The advantages of the cross-start drive mechanism of the pointer adjustment machine in this technical solution are:

[0087] 1. The use of the aforementioned vertical mounting plate, guide rail, and slider in the moving parts can better ensure the motion accuracy of the vertical reciprocating movement of the servo motor and the cross-shaped crank.

[0088] 2. At least two bearing seats are fixedly installed on the vertical mounting plate to roll support the drive shaft between the servo motor and the crosshead, which can better maintain the stability and reliability of the transmission connection between the servo motor and the crosshead, and better ensure the verticality of the crosshead, thereby helping to ensure the accuracy of pointer adjustment for a long time.

[0089] The intermediate drive shaft between the servo motor and the crosshead is further provided with a verticality retention structure at the lower section in the height direction. The verticality retention structure includes a positioning cylinder fixed to the vertical end face of the bearing seat. The outer side of the lower section of the intermediate drive shaft is slidably connected to the inner side of the positioning cylinder.

[0090] This technical solution, by adding the above-mentioned perpendicularity maintenance structure, can ensure the perpendicularity of the crosshair more consistently and effectively through the sliding fit between the positioning cylinder and the intermediate drive shaft. The perpendicularity of the crosshair determines the accuracy of the pointer adjustment.

[0091] A passive rotation detection structure is also provided on the intermediate transmission shaft between the servo motor and the crosshead. The passive rotation detection structure includes a convex ring fixedly mounted on the intermediate transmission shaft. A detection notch is provided in the circumferential direction of the convex ring, and the detection notch is used to allow the detection light to pass through vertically.

[0092] The passive rotation detection structure also includes a U-shaped fiber optic sensor, which is fixed on the vertical mounting plate. The transmitting end and receiving end of the U-shaped fiber optic sensor are located inside the opening of the U-shape, and the transmitting end and receiving end of the U-shaped fiber optic sensor are located on the upper and lower sides of the flange of the convex ring and can receive a detection signal when the detection notch passes through.

[0093] By adopting the above passive rotation detection structure, the rotation of the crosshead can be detected to determine whether the rotation is excessive, thus preventing accidental adjustment.

[0094] The passive rotation detection structure also includes radial perforations and through-beam fiber sensors. At least two radial perforations are provided at the same height of the intermediate drive shaft, and the included angle between the centerlines of two adjacent radial perforations is an acute angle.

[0095] The through-beam fiber optic sensor is fixedly installed on the radially outer side of the radial perforation and is able to allow the light emitted from the transmitting end of the through-beam fiber optic sensor to pass through the radial perforation and be received by the receiving end of the through-beam fiber optic sensor when the intermediate drive shaft rotates to a predetermined position.

[0096] By using the above radial perforated and through-beam fiber optic sensors, it is possible to further detect whether the rotation of the cross-start (intermediate drive shaft) is excessive by controlling the included angle, which also plays a better role in detecting over-adjustment.

[0097] The vertical support plate is fixedly supported by a frame structure, which includes a pair of outer support columns, a pair of inner support columns, and a support top plate.

[0098] The lower ends of the pair of outer support columns are fixed to the platform of the adjustment frame on the radially outer side of the electronically controlled turntable, and the lower ends of the pair of inner support columns are fixed to a fixed support plate installed in the middle of the turntable.

[0099] The top ends of each of the pair of outer support columns and the pair of inner support columns are fixedly connected to the support top plate; the vertical support plate is fixedly installed on the lower surface of the support top plate.

[0100] The above frame structure has the advantages of being sturdy and reliable, thus ensuring the stable and accurate installation and positioning of the vertical support plate; at the same time, the above frame structure also facilitates the installation of other components (for example, the pair of outer support columns also constitute the support columns of the rocker arm finger cylinder; the pair of inner support columns also constitute the support columns of the rocker arm finger cylinder), expanding the supporting function of the structure and making the overall structure more ingenious and reasonable.

[0101] 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. A pointer adjustment mechanism for an error adjustment mechanism in a diaphragm gas meter movement, characterized in that, It includes an adjustment platform and an electronically controlled turntable, with the electronically controlled turntable fixedly installed on the platform of the adjustment platform; the circumference of the electronically controlled turntable is provided with a feeding station, a pointer adjustment station, a shooting station and a unloading station at intervals, and a positioning fixture for positioning the diaphragm gas meter movement is fixedly installed on the turntable surface corresponding to each station. The loading and unloading stations can work in conjunction with the material handling robotic arm. The pointer adjustment station is equipped with an adjustment mounting bracket, a cross-shaped jack, and a cross-shaped jack drive mechanism. The adjustment mounting bracket is fixed on the adjustment platform, and the cross-shaped jack drive mechanism is fixedly installed on the adjustment mounting bracket and is used to drive the cross-shaped jack to achieve vertical lifting and rotation. A camera is installed at the shooting station. The camera is fixedly installed above the surface of the electronically controlled turntable and is used to shoot and record the pointer of the error adjustment mechanism of the diaphragm gas meter movement. The positioning fixture includes a loading plate with a placement position in the middle for the diaphragm gas meter movement. Four upward-protruding limiting posts surround the placement position to restrict the movement. A guide sleeve is fixedly installed on the loading plate around the outer perimeter of the placement position and the limiting posts. A guide post is fixedly installed on the surface of the electronically controlled turntable for the guide sleeve to slide into. The top of the guide post is radially outward-protruding and used to limit the guide sleeve. A clearance hole is located on the surface of the electronically controlled turntable directly below the center of the loading plate. Correspondingly, a pusher cylinder is fixedly installed on the platform of the adjusting frame at the pointer adjustment station. The pusher plate of the pusher cylinder faces upward and can pass through the clearance hole, causing the loading plate to be lifted to a predetermined position. The pointer adjustment station is also equipped with a rocker arm locking mechanism and a crank locking mechanism. The rocker arm locking mechanism includes a rocker arm finger cylinder fixed on the bracket. A pair of V-shaped clamping blocks with horizontally facing openings are fixedly installed on the two fingers of the rocker arm finger cylinder. The pair of V-shaped clamping blocks are used to clamp the two sets of rocker arms of the diaphragm gas meter movement at the predetermined position at the widest point in the thickness direction of the movement and to lock the rocker arms. The crank locking mechanism includes a crank finger cylinder fixed on the bracket. A pair of limiting protrusions with horizontally facing openings and inward protrusions are fixedly installed on the two fingers of the crank finger cylinder. The pair of limiting protrusions are used to insert into the concave part of the two sets of cranks of the diaphragm gas meter movement at the predetermined position on the outer side of the thickness direction of the movement and to lock the cranks. The cross-shaped starter drive mechanism includes a servo motor, a vertical mounting plate, and an intermediate transmission shaft connecting the servo motor and the cross-shaped starter. A passive rotation detection structure is provided on the intermediate transmission shaft. The passive rotation detection structure includes a convex ring fixedly mounted on the intermediate transmission shaft. A detection notch is provided on the circumference of the convex ring, allowing detection light to pass vertically through. The passive rotation detection structure also includes a U-shaped fiber optic sensor. The U-shaped fiber optic sensor is fixed on the vertical mounting plate, with its transmitting and receiving ends located inside the opening of the U-shape. The transmitting and receiving ends of the U-shaped fiber optic sensor are located on the upper and lower sides of the flange of the convex ring and can receive a detection signal when the detection notch passes through.

2. The pointer adjustment mechanism for the error adjustment mechanism of a diaphragm gas meter movement according to claim 1, characterized in that: Two pointer calibration stations are arranged at adjacent intervals along the circumference of the electronically controlled turntable.

3. The pointer adjustment mechanism for the error adjustment mechanism of a diaphragm gas meter movement according to claim 1, characterized in that: The cross-shaped drive mechanism includes a fixed part and a movable part; The fixed part includes a lifting drive cylinder and a vertical support plate that is vertically fixed above the electronically controlled turntable at the pointer adjustment station; the lifting drive cylinder is fixedly installed on one side of the vertical support plate, and a vertical guide rail is fixedly installed on the other side of the vertical support plate. The movable part includes a slider, a vertical mounting plate, a servo motor, and a cross-shaped lifting tool; the slider is mounted on the vertical guide rail, and the vertical mounting plate, which is an integral elongated strip, is fixedly mounted on the slider. The vertical mounting plate is driven to the push rod of the lifting drive cylinder through an intermediate connector; the servo motor is fixedly mounted on the vertical mounting plate or the intermediate connector; the output shaft of the servo motor faces downward and is coaxially fixedly connected to the cross-shaped lifting tool. The movable part also includes at least two bearing seats fixedly installed on the surface of the vertical mounting plate. The at least two bearing seats are rotatably connected to the intermediate drive shaft via bearings, and one of the at least two bearing seats is adjacent to the output shaft of the servo motor, and the other is adjacent to the cross-shaped support.

4. The pointer adjustment mechanism for the error adjustment mechanism of a diaphragm gas meter movement according to claim 3, characterized in that: The intermediate drive shaft is further provided with a verticality retention structure at the lower section in the height direction. The verticality retention structure includes a positioning cylinder fixed to the vertical end face of the bearing seat. The outer side of the lower section of the intermediate drive shaft is slidably connected to the inner side of the positioning cylinder.

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