Automatic calibrating device for cold water meter

Abstract

The utility model belongs to the technical field of water meter verification, and particularly relates to a cold water meter automatic verification device which comprises a conveyor used for conveying a cold water meter and a fixing frame, the fixing frame is fixedly connected to the middle position of the upper side of the conveyor, and the inner end and the outer end of the fixing frame are connected with verification mechanisms. According to the automatic calibrating device for the cold water meters, when the cold water meters are calibrated, the cold water meters are sequentially placed on the conveyor after the conveyor is started, after the water meters are moved into the fixing frame, the conveyor is stopped firstly, then the output shaft of the double-shaft motor is started to rotate to drive the gear to rotate, and then the toothed bar is driven to move; after the baffles completely move to the left side and the right side of the fixing frame, the double-shaft motor is closed, air cylinders at the front end and the rear end of the fixing frame are started, detection pressing plates at the front end and the rear end of the interior of the fixing frame are driven to move towards the water meter, and the water meter is subjected to extrusion verification.

Description

Technical Field

[0001] This utility model relates to the field of water meter calibration technology, specifically an automated calibration device for cold water meters. Background Technology

[0002] A water meter is an instrument that measures water flow, mostly the cumulative flow of water. It is generally divided into two categories: volumetric water meters and velocity water meters. The internal structure of a traditional water meter can be divided into three main parts from the outside in: the casing, the sleeve, and the inner core. As the part that comes into direct contact with water, the water meter casing needs to be subjected to a pressure resistance test before it is put into use to check whether it meets the standards and whether it can be put into use.

[0003] Currently, water meters used in ordinary places need to be tested for water pressure resistance. Some water meters are buried deep underground and also need to be tested to see if they can withstand the pressure generated by the external environment. Existing testing equipment requires multiple manual operations, resulting in low testing and verification efficiency.

[0004] As disclosed in Chinese Patent CN216208216U, an automated water meter pressure resistance testing device is used. In operation, the water meter body is placed in the first recess of a clamping plate. An electric push rod is activated, moving the moving plate and clamping plate. The second recess at the bottom of the clamping plate presses against the outside of the water meter body. A cylinder is activated, moving the connecting plate, which in turn moves the connecting pipe, which is then fitted onto the port pipe of the water meter body. An external water pump then inputs water through a water pipe, passing through the water meter body. The water speed is controlled to perform a pressure test. After the water pressure test, a hydraulic cylinder is activated, moving the grooved plate. The grooved plate then moves the clamping plate and pressure plate downwards, squeezing the outer casing of the water meter body to test whether it can withstand a certain external pressure. The entire process only requires manual placement of the water meter into the first recess of the clamping plate, greatly improving the efficiency of water meter pressure resistance testing.

[0005] However, if the testing device squeezes a substandard water meter during testing, the water meter may crack, and metal fragments may be ejected from the fracture, endangering the safety of nearby workers.

[0006] Therefore, we urgently need to provide an automated calibration device for cold water meters with protective functions. Utility Model Content

[0007] The purpose of this invention is to provide an automated calibration device for cold water meters to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automated calibration device for cold water meters, comprising a conveyor for transporting cold water meters and a fixed frame, wherein the fixed frame is fixedly connected to the upper middle position of the conveyor, and calibration mechanisms are connected to the inner and outer ends of the fixed frame.

[0009] The calibration mechanism includes a cylinder installed at the middle position of the front and rear sides of the fixed frame. The output shaft end of the cylinder is connected to a detection pressure plate. Limit frames are symmetrically fixedly connected to the front and rear ends of the left and right sides of the fixed frame. Baffles are connected to the left and right ends of the fixed frame. A gear is fixedly connected to the side of the baffles near the fixed frame. A dual-axis motor is installed on the upper side of the fixed frame. A gear is fixedly connected to the outer side of the output shaft of the dual-axis motor. Anti-detachment plates are symmetrically fixedly connected to the lower ends of the two baffles at the left and right ends of the fixed frame. A disassembly and assembly unit is connected to the side of the detection pressure plate near the cylinder.

[0010] A further improvement is that the disassembly and assembly unit includes a fixing ring fixedly connected to the middle position of the detection pressure plate near the cylinder side, and the upper end of the fixing ring is connected to a bolt.

[0011] A further improvement is that the inner sides of the two adjacent limiting frames at the front and rear ends of the outer side of the fixing frame are slidably connected to the front and rear ends of the outer side of the baffle, so that when the baffle moves, it can only slide along the inner side of the limiting frames.

[0012] A further improvement is that the side of the detection plate away from the cylinder abuts against the front and rear ends of the water meter located inside the fixed frame on the conveyor, thereby causing the detection plate to move toward the water meter and squeeze it by activating the cylinders at the front and rear ends of the fixed frame.

[0013] A further improvement is that the rack meshes with the gear, so that when the output shaft of the dual-shaft motor is started and rotates, driving the gear to rotate, the rack can be moved.

[0014] A further improvement is that the upper side of the anti-detachment plate abuts against the inner top of the fixing frame. Therefore, when the baffle moves upward, the anti-detachment plate will eventually move upward to contact the inner top of the fixing frame.

[0015] A further improvement is that the upper end of the fixing ring is provided with a threaded hole, and the upper end of the cylinder output shaft near the detection pressure plate is provided with a fixing hole. The outer side of the cylinder output shaft near the detection pressure plate is slidably connected to the inner side of the fixing ring. The outer side of the bolt is threadedly connected to the inner side of the threaded hole, and the outer side of the bolt is slidably connected to the inner side of the fixing hole. Thus, after the detection pressure plate deforms due to long-term testing, the bolt can be rotated to move it out of the fixing hole from the threaded hole, so that the cylinder output shaft and the detection pressure plate are no longer relatively fixed.

[0016] A further improvement is that a rubber pad is fixedly connected to the side of the detection plate away from the cylinder, so that when the detection plate squeezes the water meter, the elastic rubber pad on the outside of the detection plate will contact the outside of the water meter, which can prevent scratches from being generated on the surface of the water meter and affecting the overall appearance.

[0017] In summary, this application discloses an automated calibration device for cold water meters.

[0018] In this technical solution, after the water meter conveyed on the conveyor moves into the fixed frame, the dual-axis motor is activated to move the baffle down to the left and right sides of the fixed frame, sealing the left and right sides of the fixed frame. This allows the water meter located inside the fixed frame to be surrounded by the detection pressure plate and the baffle. Thus, during the water meter crushing and testing process, the metal fragments generated when a defective water meter is crushed will be blocked by the detection pressure plate and the baffle during their ejection, preventing accidental injury to nearby personnel and ensuring the safety of the staff.

[0019] Furthermore, after the test plate deforms due to prolonged testing, the bolts can be rotated to move it out of the fixed hole from the threaded hole. This removes the cylinder's output shaft from the test plate, allowing the deformed test plate to be removed and a new test plate to be installed on the cylinder's output shaft. This prevents the deformed test plate from continuing to be used for calibration and affecting the water meter's test results. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a top view of the fixing frame structure of this utility model;

[0022] Figure 3 This is a bottom view of the structure of the fixing frame of this utility model;

[0023] Figure 4 This is a schematic diagram of the disassembly and assembly unit of this utility model.

[0024] In the diagram: 1. Conveyor; 2. Fixing frame; 301. Cylinder; 302. Detection plate; 303. Limiting frame; 304. Baffle; 305. Gear rack; 306. Dual-axis motor; 307. Gear; 308. Anti-detachment plate; 401. Fixing ring; 402. Bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4This utility model provides a technical solution: an automated calibration device for cold water meters, including a conveyor 1 for conveying cold water meters and a fixed frame 2. The fixed frame 2 is fixedly connected to the upper middle position of the conveyor 1, and calibration mechanisms are connected to the inner and outer ends of the fixed frame 2.

[0027] The testing mechanism includes a cylinder 301 installed at the middle position of the front and rear sides of the fixed frame 2. The output shaft end of the cylinder 301 is connected to a test pressure plate 302. The side of the test pressure plate 302 away from the cylinder 301 abuts against the front and rear ends of the water meter located inside the fixed frame 2 on the conveyor 1. After the water meter to be tested is moved into the fixed frame 2 by the conveyor 1, the test pressure plate 302 is moved towards the water meter by activating the cylinders 301 at the front and rear ends of the fixed frame 2, and squeezes it to test the strength of the water meter.

[0028] The front and rear ends of the left and right sides of the fixed frame 2 are symmetrically fixedly connected with limit frames 303. The left and right ends of the fixed frame 2 are connected with baffles 304. The inner sides of the two adjacent limit frames 303 on the outer front and rear ends of the fixed frame 2 are slidably connected to the outer front and rear ends of the baffles 304. Thus, when the baffles 304 moves, it can only slide along the inner side of the limit frames 303, thereby limiting the movement of the baffles 304.

[0029] A rack 305 is fixedly connected to the side of the baffle 304 near the fixed frame 2. A dual-axis motor 306 is mounted on the upper side of the fixed frame 2. A gear 307 is fixedly connected to the outer side of the output shaft of the dual-axis motor 306. Anti-detachment plates 308 are symmetrically fixedly connected to the lower ends of the two baffles 304 at both ends of the fixed frame 2. The rack 305 meshes with the gear 307, so that when the dual-axis motor 306 is started and its output shaft rotates, driving the gear 307 to rotate, the rack 305 can be moved, causing the baffle 304 to slide along the inner side of the limit frame 303. After the water meter conveyed on the conveyor 1 moves to the fixed frame 2, the dual-shaft motor 306 is started to move the baffle 304 down to the left and right sides of the fixed frame 2. After the left and right sides of the fixed frame 2 are closed, the water meter located in the fixed frame 2 is surrounded by the detection pressure plate 302 and the baffle 304. Thus, during the water meter crushing and testing process, the metal fragments generated when the unqualified water meter is crushed will be blocked by the detection pressure plate 302 and the baffle 304 during the ejection process, so as not to accidentally injure the nearby staff and ensure the safety of the staff.

[0030] The upper side of the anti-detachment plate 308 abuts against the inner top of the fixing frame 2, so that when the baffle 304 moves upward, the anti-detachment plate 308 will eventually move up to contact the inner top of the fixing frame 2, thereby preventing the baffle 304 from moving out of the limiting frame 303.

[0031] A disassembly and assembly unit is connected to the side of the detection pressure plate 302 near the cylinder 301. The disassembly and assembly unit includes a fixing ring 401 fixedly connected to the middle position of the side of the detection pressure plate 302 near the cylinder 301. A bolt 402 is connected to the upper end of the fixing ring 401, and a threaded hole is formed at the upper end of the fixing ring 401. A fixing hole is formed above the end of the cylinder 301 output shaft near the detection pressure plate 302. The outer side of the end of the cylinder 301 output shaft near the detection pressure plate 302 is slidably connected to the inner side of the fixing ring 401. The outer side of the bolt 402 is connected to the threaded hole. The inner threaded connection allows the outer side of the bolt 402 to slide against the inner side of the fixing hole. This allows the detection plate 302 to deform after prolonged testing. By rotating the bolt 402, it can be moved out of the fixing hole from the threaded hole, thus removing the output shaft of the cylinder 301 from the detection plate 302. The deformed detection plate 302 can then be removed and a new detection plate 302 installed on the output shaft end of the cylinder 301. This prevents the deformed detection plate 302 from continuing to be used for calibration and affecting the water meter's test results.

[0032] A rubber pad is fixedly connected to the side of the detection pressure plate 302 away from the cylinder 301. When the detection pressure plate 302 squeezes the water meter, the elastic rubber pad on the outside of the detection pressure plate 302 will contact the outside of the water meter, which can prevent scratches from being generated on the surface of the water meter and affecting the overall appearance.

[0033] Working principle: When calibrating cold water meters, after starting the conveyor 1, cold water meters are placed on the conveyor 1 in sequence. After the water meter moves into the fixed frame 2, the conveyor 1 is turned off first, and then the dual-axis motor 306 is started. Its output shaft rotates, driving the gear 307 to rotate, which in turn drives the rack 305 to move, so that the baffle 304 slides down along the inner side of the limit frame 303 until the baffle 304 has completely moved to the left and right sides of the fixed frame 2. Then the dual-axis motor 306 is turned off, and the cylinders 301 at the front and rear ends of the fixed frame 2 are started, driving the detection pressure plates 302 at the front and rear ends inside the fixed frame 2 to move towards the water meter and squeeze the water meter for calibration. After the calibration is completed, the detection pressure plates 302 are driven away from the water pump again, and the dual-axis motor 306 is started again to move the baffle 304 upward. Then the conveyor 1 is turned on again to transport the calibrated water meter out of the fixed frame 2. At the same time, the water meter to be tested at the rear end moves towards the fixed frame 2 to carry out continuous water meter calibration work.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An automated calibration device for cold water meters, comprising a conveyor (1) for transporting cold water meters and a fixing frame (2), wherein the fixing frame (2) is fixedly connected to the upper middle position of the conveyor (1), characterized in that: The inner and outer ends of the fixing frame (2) are connected to the inspection mechanism; The calibration mechanism includes a cylinder (301) installed at the middle position of the front and rear sides of the fixed frame (2). The output shaft end of the cylinder (301) is connected to a detection pressure plate (302). The front and rear ends of the left and right sides of the fixed frame (2) are symmetrically connected to limit frames (303). The left and right ends of the fixed frame (2) are connected to baffles (304). The side of the baffle (304) near the fixed frame (2) is fixedly connected to a rack (305). The upper side of the fixed frame (2) is equipped with a dual-axis motor (306). The output shaft of the dual-axis motor (306) is fixedly connected to a gear (307). The lower ends of the two baffles (304) at the left and right ends of the fixed frame (2) are symmetrically fixedly connected to anti-detachment plates (308). The side of the detection pressure plate (302) near the cylinder (301) is connected to a disassembly and assembly unit.

2. The automated calibration device for cold water meters according to claim 1, characterized in that: The disassembly and assembly unit includes a fixing ring (401) fixedly connected to the middle position of the detection pressure plate (302) near the cylinder (301), and the upper end of the fixing ring (401) is connected to a bolt (402).

3. The automated calibration device for cold water meters according to claim 1, characterized in that: The inner sides of the two adjacent limiting frames (303) on the outer front and rear ends of the fixed frame (2) are slidably connected to the outer front and rear ends of the baffle (304).

4. The automated calibration device for cold water meters according to claim 1, characterized in that: The side of the detection plate (302) away from the cylinder (301) abuts against the front and rear ends of the water meter located inside the fixed frame (2) on the conveyor (1).

5. The automated calibration device for cold water meters according to claim 1, characterized in that: The rack (305) meshes with the gear (307).

6. The automated calibration device for cold water meters according to claim 1, characterized in that: The upper side of the anti-detachment plate (308) abuts against the top of the inner side of the fixing frame (2).

7. The automated calibration device for cold water meters according to claim 2, characterized in that: The upper end of the fixed ring (401) is provided with a threaded hole. The output shaft of the cylinder (301) is provided with a fixed hole above the end near the detection pressure plate (302). The outer side of the output shaft of the cylinder (301) near the detection pressure plate (302) is slidably connected to the inner side of the fixed ring (401). The outer side of the bolt (402) is threadedly connected to the inner side of the threaded hole. The outer side of the bolt (402) is slidably connected to the inner side of the fixed hole.

8. The automated calibration device for cold water meters according to claim 1, characterized in that: A rubber pad is fixedly connected to the side of the detection plate (302) away from the cylinder (301).

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