A performance testing method for gas water heaters

Abstract

The present invention relates to the technical field of water heater testing, and in particular to a method for testing the performance of a gas water heater, which includes a housing. On both side walls inside the housing, two guide rail grooves are symmetrically formed. A sliding strip is slidably connected inside the guide rail grooves. A driving mechanism is arranged inside one of the guide rail grooves, and the driving mechanism is used to drive the sliding strip to slide inside the guide rail groove. A clamping box is horizontally arranged between the two sliding strips. One end of the clamping box is fixed with a rotating shaft, and both ends of the rotating shaft are respectively rotatably connected to the side walls of the corresponding sliding strips. A guiding mechanism is arranged at the other end of the clamping box, and a calibration clamping mechanism is arranged on the top surface of the clamping box; in this solution, the water heater is clamped by the calibration clamping mechanism and the position of the water heater is automatically corrected synchronously, so that the water heater is kept horizontal with the inner wall of the housing, and the position of the water heater is automatically and synchronously adjusted during the clamping process, which is beneficial to saving the time for manually adjusting the clamping position, thereby facilitating the acceleration of the detection process.

Description

Technical Field

[0001] The present invention relates to the field of water heater testing, and particularly to a method for testing the performance of a gas water heater. Background Art

[0002] A gas water heater, also known as a gas water heating furnace, refers to a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water.

[0003] Some invention patents related to the performance testing of gas water heaters are disclosed in the prior art. The Chinese patent with the application number 201910269128.0 discloses a performance testing bracket for a gas water heater, which includes a frame, a flipping support frame, a hydraulic cylinder, a support frame frame, and a conveying device. The front end of the flipping support frame is rotatably connected and installed on the top of the front end of the frame. The hydraulic cylinder is arranged below the flipping support frame. The cylinder body of the hydraulic cylinder is installed on the frame, and the piston rod of the hydraulic cylinder is hinged to the flipping support frame. The support frame frame is convexly welded and fixed on the top surface of the rear end of the flipping support frame. The conveying device is installed on the rear end of the frame and located below the support frame frame.

[0004] In the existing gas water heater performance testing device, during the loading process, the water heater needs to be placed on the clamping piece at a specified position. When the position of the water heater is offset, manual adjustment is required continuously, resulting in too long time for manual adjustment of the clamping position and a slow detection process. In view of this, we propose a method for testing the performance of a gas water heater. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies in the prior art and propose a method for testing the performance of a gas water heater.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: A method for testing the performance of a gas water heater, the testing method includes the following steps:

[0007] Step 1: Place the water heater on the performance testing device, and then clamp the water heater through the performance testing device and synchronously perform automatic correction on the position of the water heater to keep the water heater horizontal with the inner wall of the performance testing device;

[0008] Step 2: Convey the water heater through the performance testing device, and during the conveying process, synchronously flip the water heater to keep the water heater in a vertical state before testing;

[0009] Step 3: Before testing, rotate the water heater through the performance testing device, connect the pipeline at the bottom of the water heater to the performance testing device, and timely position the water heater through the performance testing device. After the installation is completed, make the water heater automatically reset through the performance testing device;

[0010] Step 4: Test the performance of the water heater through a performance testing device;

[0011] The performance testing device in Steps 1 to 4 includes a housing. On both side walls inside the housing, two guide grooves are symmetrically opened. A sliding bar is slidably connected inside the guide grooves. A driving mechanism is arranged inside one of the guide grooves. The driving mechanism is used to drive the sliding bar to slide inside the guide groove. A clamping box is horizontally arranged between the two sliding bars. One end of the clamping box is fixed with a rotating shaft, and both ends of the rotating shaft are respectively rotatably connected to the side walls of the corresponding sliding bars. A guiding mechanism is arranged at the other end of the clamping box. When the sliding bar moves, the sliding bar drives the guiding mechanism to turn the clamping box to a vertical state;

[0012] A calibration clamping mechanism is arranged on the top surface of the clamping box. The calibration clamping mechanism is used to clamp the water heater and automatically correct the position of the water heater synchronously. A tester is fixed on the side of the housing away from the clamping box. An operation port is opened on the side wall of the housing near the tester; When working, in the existing gas water heater performance testing device, during the feeding process, the water heater needs to be placed on the clamping piece at a specified position. When the position of the water heater deviates, manual adjustment is required continuously, resulting in too long time for manual adjustment of the clamping position and slower detection progress. The technical solution of the present invention can solve the above problems. The specific working method is as follows: during feeding, the clamping box is in a horizontal state. The water heater is placed on the top surface of the clamping box. The calibration clamping mechanism clamps the water heater and automatically corrects the position of the water heater synchronously, so that the water heater is kept horizontal with the inner wall of the housing. During the clamping process, the position of the water heater is automatically adjusted synchronously, which is beneficial to saving the time for manual adjustment of the clamping position, thus facilitating the acceleration of the detection process. The driving mechanism drives the sliding bar to slide inside the guide groove, and the two sliding bars drive the clamping box to move inside the housing. During the movement of the clamping box, the sliding bar drives the guiding mechanism to turn the clamping box. During the movement, the position of the water heater on the top surface of the clamping box is automatically adjusted, so that the water heater is kept in a vertical state before moving to the position of the tester, which is beneficial to simulating the actual use state of the water heater for testing during the test.

[0013] Preferably, the driving mechanism includes a motor. The motor is fixed on the inner wall of the guide groove. The end of the output shaft of the motor is fixed with a screw rod. The screw rod threadedly penetrates through the corresponding sliding bar and extends out and then is rotatably connected to the inner wall of the guide groove; When working, the motor drives the screw rod to rotate, the screw rod drives the sliding bar to move inside the guide groove, and the sliding bar drives the clamping box and the water heater to move, realizing the conveying function of the water heater.

[0014] Preferably, the guiding mechanism includes two guiding grooves and a sliding groove. The two guiding grooves are symmetrically formed on the inner wall of the housing, and both guiding grooves are inclined. The height of one end of the guiding groove close to the operation port is lower than that of the other end. Guiding blocks are slidably connected inside the two guiding grooves, and a positioning strip is fixedly connected between the two guiding blocks. The top of the positioning strip is in contact with the bottom of the clamping box. A pulling spring is fixed on the outer wall of one end of the guiding block close to the lowest point of the guiding groove, and the end of the pulling spring is fixed on the inner wall of the lowest point of the guiding groove. The sliding groove is formed on the inner bottom surface of the guide rail groove, and the sliding groove is communicated with the inside of the guiding groove. A baffle is slidably connected inside the sliding groove, the top end of the baffle is fixed to the sliding strip, and one side of the baffle abuts against the guiding block. During operation, when the clamping box is in a horizontal state, under the limiting action of the baffle, the guiding block is positioned at the highest point of the guiding groove, so that the positioning strip abuts against the bottom surface of the clamping box, and the clamping box is supported by the positioning strip, which is beneficial to keeping the clamping box in a horizontal state and facilitating the feeding of the water heater. When the sliding strip drives the clamping box to move, the sliding strip moves away from the guiding block. Under the pulling action of the pulling spring, the guiding block slides towards the lowest point of the guiding groove. During the sliding process of the guiding block, it is always in contact with the sliding strip, and the clamping box is continuously supported by the positioning strip. The end of the clamping box moves downward along with the positioning strip, so as to realize the function of synchronously flipping the water heater during the transportation process of the water heater, and keep the water heater in a vertical state before moving to the position of the tester, which is beneficial to simulating the actual use state of the water heater for testing during the test. And during the flipping process, the positioning strip always supports the clamping box, which is beneficial to the stable flipping of the clamping box and the water heater, and prevents the water heater from suddenly flipping and causing damage to the internal electrical components.

[0015] Preferably, the calibration clamping mechanism includes a circular through groove opened on the top surface of the clamping box. An outer ring plate is rotatably connected inside the circular through groove. A calibration plate is rotatably connected to the inner ring surface of the outer ring plate. Two support plates are symmetrically fixed on the top surface of the outer ring plate. Two electric push rods are fixed on the side wall of each support plate. The end of the piston rod of the electric push rod is fixed with a clamping plate. A limiting mechanism is arranged on the bottom surface of the outer ring plate. When the outer ring plate is horizontal, the limiting mechanism drives the positioning strip to position the bottom of the outer ring plate. During operation, during feeding, the worker places the water heater on the calibration plate. By rotating the water heater, the calibration plate is driven to rotate, so that the water heater is located between the clamping plates. At this time, even if the water heater has a small deviation, there is no need for manual adjustment. The electric push rod can be directly started, and the clamping plate is driven by the electric push rod to approach the water heater. Since there are two electric push rods and clamping plates on the same support plate, during the clamping process, one of the clamping plates contacts the water heater first and pushes the water heater, causing the water heater and the calibration plate to rotate until they contact the other clamping plate on the same side, so that the position of the water heater is parallel to the clamping plate. Finally, the water heater is stably clamped by the four clamping plates, so as to realize the function of automatically calibrating and synchronously clamping the position of the water heater, which is beneficial to saving the time for adjusting the clamping position of the water heater during the feeding process, thus facilitating the acceleration of the detection process.

[0016] Preferably, the limiting mechanism includes a positioning shaft, a sliding groove, and a positioning block. The positioning shaft is fixed on the bottom surface of the outer ring plate. The sliding groove is opened on the bottom surface of the clamping box. The positioning block is slidably connected inside the sliding groove. A positioning groove is opened in the middle of the positioning block. The positioning shaft is inserted into the positioning groove. A first spring is fixed on the top of the positioning block. The top of the first spring is fixed with a fixing piece. The fixing piece is fixed on the inner wall of the clamping box. The bottom of the positioning block abuts against the top surface of the positioning strip, and an inclined surface is opened on the bottom surface of the positioning block. During operation, when the clamping box is in a horizontal state, the positioning strip abuts against the positioning block on the bottom surface of the clamping box, so as to push the positioning block upward into the clamping box. The positioning shaft is positioned through the positioning groove, so as to position the outer ring plate, which is beneficial to maintaining the stability of the outer ring plate during the feeding process and preventing the outer ring plate from rotating with the calibration plate during the clamping process. After the clamping box is in a vertical state, the positioning strip is separated from the clamping box. Under the elastic force of the first spring, the positioning block is pushed downward, so that the positioning block is separated from the positioning shaft, canceling the positioning state of the outer ring plate, which is beneficial to the worker to rotate and adjust the water heater when installing the circuit or pipeline at the bottom of the water heater. By opening an inclined surface on the bottom surface of the positioning block, it is convenient for the positioning strip to push the inclined surface of the bottom surface of the positioning block to lift and reset the positioning block during the later reset of the positioning strip, and re - realize the limitation of the positioning state of the outer ring plate.

[0017] Preferably, an adjusting mechanism is provided below the outer ring plate. The adjusting mechanism is used for unidirectional rotation adjustment of the outer ring plate. The adjusting mechanism includes a volute spring. The volute spring is arranged below the outer ring plate. One end of the volute spring is fixed on a positioning shaft, and the other end of the volute spring is fixed with a connecting column. The connecting column is fixed on the inner bottom surface of the clamping box. A unidirectional positioning mechanism is arranged between the outer ring plate and the volute spring. The unidirectional positioning mechanism is used for adjusting the rotation direction of the outer ring plate and performing unidirectional positioning. During operation, in the prior art, although the water heater is erected during the detection process to make the water heater in the same state as the actual use, the position of the erected water heater is fixed, and the operating space between the water heater and the test equipment is small. When manually connecting the water heater with the lines and pipes in the performance detection system, it is difficult to adjust the position of the water heater, and the operation is relatively difficult, thus affecting the detection process. The technical solution of the present invention can solve the above problems. The specific working method is as follows. When the clamping box is in a vertical state and the staff needs to connect the pipelines at the bottom of the water heater, the rotation direction of the outer ring plate is adjusted through the unidirectional positioning mechanism, and then the water heater is rotated to drive the outer ring plate to rotate. After adjusting the position of the water heater, the outer ring plate is timely unidirectionally positioned through the unidirectional limiting mechanism to prevent the water heater from rotating back under the action of the volute spring, which is beneficial to maintaining the stability of the water heater when installing the pipelines at the bottom of the water heater and facilitating the installation of the pipelines.

[0018] Preferably, the one-way positioning mechanism includes a sector plate, a connecting shaft, an adjustment groove, and a gear ring. The gear ring is sleeved and fixed on the bottom surface of the outer ring plate. The sector plate is arranged between the scroll spring and the gear ring. One end of the sector plate is rotatably connected to the inner bottom surface of the clamping box. The axis of the sector plate and the center of the gear ring are on the same rotation axis. An arc-shaped strip is fixed at the edge of the top surface of the other end of the sector plate. The arc-shaped strip is sleeved on the outside of the gear ring. The adjustment groove is opened on the side wall of the clamping box. An adjustment rod is inserted into the adjustment groove. The end of the adjustment rod is fixed on the outer wall of the arc-shaped strip. The connecting shaft is symmetrically fixed on the inner top surface of the clamping box. A clamping strip is rotatably connected to the connecting shaft. A torsion spring is sleeved on the connecting shaft. One end of the torsion spring is fixed on the connecting shaft, and the other end of the torsion spring is fixed on the clamping strip. One of the clamping strips abuts against the teeth of the gear ring, and the other clamping strip abuts against the outer wall of the arc-shaped strip. Arc-shaped surfaces are opened on the opposite sides of the two clamping strips. During operation, by moving the position of the adjustment rod in the adjustment groove, the position of the arc-shaped strip is adjusted. Under the guiding action of the arc-shaped surface, different clamping strips are lifted by the arc-shaped strip, so that the clamping strips are not in contact with the gear ring. When the adjustment rod is in the middle position of the adjustment groove, different clamping strips on both sides of the arc-shaped strip are lifted simultaneously to cancel the limit. When the adjustment rod is at both ends of the adjustment groove, one side of the arc-shaped strip will lift one of the clamping strips to cancel the positioning state of one of the clamping strips on the gear ring. By rotating the arc-shaped strip, different clamping strips are switched to the positioning state with the gear ring, so as to realize the one-way positioning function in different directions of the outer ring plate. After the staff rotates the outer ring plate and the water heater to a suitable position, the outer ring plate is timely positioned by the clamping strip, so that the water heater is kept stable, which is beneficial for the staff to install the lines and pipelines on the water heater. And after the two clamping strips are lifted simultaneously by the arc-shaped strip, under the elastic force of the scroll spring, the outer ring plate can drive the water heater to automatically reset, further saving the installation time in the detection process and being beneficial to accelerating the detection process.

[0019] Preferably, a buffer positioning mechanism for positioning the clamping box is arranged at the position of the operation port of the housing. The buffer positioning mechanism includes a limiting strip and a first positioning plate. The limiting strip is fixed between the two sliding strips. The first positioning plate is fixed on the inner wall of the housing. A second spring is fixed at the end of the first positioning plate away from the operation port. The end of the second spring is fixed with a second positioning plate. During operation, when the clamping box is vertical, one side of the clamping box is limited by the limiting strip. The clamping box continues to move until it contacts the second positioning plate, pushing the second positioning plate to compress the spring, so that the spring shortens to generate elastic force, so that the clamping box is clamped between the second positioning plate and the limiting strip, which is beneficial for automatically positioning the vertical state of the clamping box before detection.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. When loading, the clamping box is in a horizontal state. Place the water heater on the top surface of the clamping box. Use the calibration clamping mechanism to clamp the water heater and automatically calibrate the position of the water heater simultaneously, so that the water heater is horizontal with the inner wall of the shell. Automatically synchronously adjust the position of the water heater during the clamping process, which is beneficial to saving the time for manual adjustment of the clamping position, thus facilitating the acceleration of the detection process.

[0022] 2. The driving mechanism drives the sliding bar to slide inside the guide rail groove. Drive the clamping box to move inside the shell through two sliding bars. During the movement of the clamping box, the clamping box is flipped through the sliding bar linkage guiding mechanism. Automatically adjust the position of the water heater on the top surface of the clamping box during the movement, so that the water heater remains in a vertical state before moving to the position of the tester, which is beneficial to simulating the actual use state of the water heater during testing for testing.

[0023] 3. Adjust the position of the arc-shaped bar by moving the adjusting rod in the adjusting groove. Under the guiding action of the arc-shaped surface, jack up different clamping bars through the arc-shaped bar, so that the clamping bar does not contact the gear ring, thereby canceling the positioning state of one of the clamping bars on the gear ring. Switch the positioning states of different clamping bars and the gear ring by rotating the arc-shaped bar, so as to realize the one-way positioning function of the outer ring plate. After the staff rotates the outer ring plate and the water heater to the appropriate position, timely position the outer ring plate through the clamping bar to keep the water heater stable, which is beneficial for the staff to install the circuits and pipelines on the water heater. And after simultaneously jacking up two clamping bars through the arc-shaped bar, under the elastic force of the volute spring, the outer ring plate can drive the water heater to automatically reset, further saving the installation time during the detection process and being beneficial to accelerating the detection process.

[0024] 4. When the clamping box is vertical, limit one side of the clamping box through the limiting strip. The clamping box continues to move until it contacts the second positioning plate, pushing the second positioning plate to compress the spring, so that the spring shortens to generate elastic force, thereby clamping the clamping box between the second positioning plate and the limiting strip, which is beneficial to automatically positioning the vertical state of the clamping box before detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic flow chart of the test method of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 3 It is of the present invention Figure 2 Schematic diagram of the structure at position A;

[0028] Figure 4 It is a schematic diagram of the structure after the first overall section of the present invention;

[0029] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at position B in

[0030] Figure 6 Schematic diagram of the structure after the first overall section of the present invention

[0031] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at position C in

[0032] Figure 8 Schematic diagram of the structure after the section at the clamping box of the present invention

[0033] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at position D in

[0034] Figure 10 Schematic diagram of the structure at position E in 8 of the present invention

[0035] Figure 11 Schematic diagram of the structure after the section at the clamping box and the positioning bar of the present invention

[0036] Figure 12 For the present invention Figure 11 Schematic diagram of the structure at position F in

[0037] In the figure: 1. housing; 2. guide rail groove; 3. sliding bar; 4. clamping box; 5. rotating shaft; 6. tester; 7. operation port; 8. motor; 9. screw; 10. guide groove; 11. sliding groove; 12. guide block; 13. positioning bar; 14. pulling spring; 15. baffle; 16. circular through groove; 17. outer ring plate; 18. correction plate; 19. support plate; 20. electric push rod; 21. clamping plate; 22. positioning shaft; 23. sliding slot; 24. positioning block; 25. positioning groove; 26. first spring; 27. fixing piece; 28. scroll spring; 29. connecting column; 30. sector plate; 31. connecting shaft; 32. adjusting groove; 33. gear ring; 34. arc bar; 35. adjusting rod; 36. clamping bar; 37. torsion spring; 38. limiting bar; 39. first positioning plate; 40. second spring; 41. second positioning plate. Detailed implementation manners

[0038] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0039] As Figures 1 to 12 shown, a performance test method for a gas water heater, the test method includes the following steps:

[0040] Step 1: Place the water heater on the performance testing device, then clamp the water heater through the performance testing device and automatically correct the position of the water heater synchronously to keep the water heater horizontal with the inner wall of the performance testing device;

[0041] Step 2: Convey the water heater through the performance testing device, and during the conveying process, make the water heater flip synchronously so that the water heater remains in a vertical state before testing;

[0042] Step 3: Before testing, rotate the water heater through the performance testing device, connect the pipeline at the bottom of the water heater to the performance testing device, and timely position the water heater through the performance testing device. After the installation is completed, make the water heater automatically reset through the performance testing device;

[0043] Step 4: Test the performance of the water heater through the performance testing device;

[0044] The performance testing device in Steps 1 to 4 includes a housing 1. Two guide grooves 2 are symmetrically opened on both inner side walls of the housing 1. A sliding bar 3 is slidably connected inside the guide groove 2. A driving mechanism is arranged inside one of the guide grooves 2. The driving mechanism is used to drive the sliding bar 3 to slide inside the guide groove 2. A clamping box 4 is horizontally arranged between the two sliding bars 3. One end of the clamping box 4 is fixed with a rotating shaft 5. Both ends of the rotating shaft 5 are respectively rotatably connected to the side walls of the corresponding sliding bars 3. A guiding mechanism is arranged at the other end of the clamping box 4. When the sliding bar 3 moves, the sliding bar 3 drives the guiding mechanism to flip the clamping box 4 to a vertical state;

[0045] A correction clamping mechanism is arranged on the top surface of the clamping box 4, which is used to clamp the water heater and automatically correct the position of the water heater at the same time. A tester 6 is fixed on the side of the shell 1 away from the clamping box 4, and an operation port 7 is opened on the side wall of the shell 1 close to the tester 6. When working, the existing gas water heater performance test device needs to put the water heater on the clamping member at a specified position during the loading process. When the position of the water heater is offset, it needs to be adjusted manually continuously, resulting in too long time for manual adjustment of the clamping position, resulting in a slow detection process. The technical solution can solve the above problems. The specific working method is as follows: when loading, the clamping box 4 is in a horizontal state, and the water heater is placed on the top surface of the clamping box 4. Through the correction The positive clamping mechanism clamps the water heater and automatically corrects the position of the water heater simultaneously, so that the water heater is kept level with the inner wall of the shell 1. The position of the water heater is automatically and synchronously adjusted during the clamping process, which is beneficial to saving time for manual adjustment of the clamping position, thereby facilitating the acceleration of the detection process. The sliding bar 3 is driven by the driving mechanism to slide inside the guide groove 2, and the clamping box 4 is driven to move inside the shell 1 through the two sliding bars 3. During the movement of the clamping box 4, the sliding bar 3 is linked to the guiding mechanism to flip the clamping box 4. During the movement, the position of the water heater on the top surface of the clamping box 4 is automatically adjusted, so that the water heater remains in a vertical state before moving to the position of the tester 6, which is beneficial to simulate the actual usage state of the water heater for testing during testing.

[0046] As a further implementation scheme of the present invention, the driving mechanism includes a motor 8, which is fixed on the inner wall of the guide rail groove 2. A screw 9 is fixed at the end of the output shaft of the motor 8. The screw 9 threadedly penetrates the corresponding sliding bar 3 and extends out and is rotatably connected to the inner wall of the guide rail groove 2. When working, the screw 9 is driven to rotate by the motor 8, and the sliding bar 3 is driven to move inside the guide rail groove 2 by the screw 9, and the clamping box 4 and the water heater are driven to move by the sliding bar 3, thereby realizing the conveying function of the water heater.

[0047] As a further embodiment of the present invention, the guiding mechanism includes two guiding grooves 10 and a sliding groove 11. The two guiding grooves 10 are symmetrically formed on the inner wall of the housing 1, and both guiding grooves 10 are inclined. The height of the guiding groove 10 near the operation port 7 is lower than that of the other end. A guiding block 12 is slidably connected inside each of the two guiding grooves 10. A positioning strip 13 is fixedly connected between the two guiding blocks 12. The top of the positioning strip 13 is in contact with the bottom of the clamping box 4. A pulling spring 14 is fixed on the outer wall of one end of the guiding block 12 near the lowest point of the guiding groove 10, and the end of the pulling spring 14 is fixed on the inner wall of the lowest point of the guiding groove 10. The sliding groove 11 is formed on the inner bottom surface of the guide rail groove 2. The sliding groove 11 is communicated with the inside of the guiding groove 10. A baffle 15 is slidably connected inside the sliding groove 11. The top end of the baffle 15 is fixed to the sliding strip 3. One side of the baffle 15 abuts against the guiding block 12. During operation, when the clamping box 4 is in a horizontal state, under the limiting action of the baffle 15, the guiding block 12 is positioned at the highest point of the guiding groove 10, so that the positioning strip 13 abuts against the bottom surface of the clamping box 4. The clamping box 4 is supported by the positioning strip 13, which is beneficial to keeping the clamping box 4 in a horizontal state and facilitating the feeding of the water heater. When the sliding strip 3 drives the clamping box 4 to move, the sliding strip 3 moves away from the guiding block 12. Under the pulling action of the pulling spring 14, the guiding block 12 slides towards the lowest point of the guiding groove 10. During the sliding process of the guiding block 12, it is always in contact with the sliding strip 3, and the clamping box 4 is continuously supported by the positioning strip 13. The end of the clamping box 4 moves downward along with the positioning strip 13, thus realizing the function of synchronously flipping the water heater during the process of conveying the water heater, so that the water heater remains in a vertical state before moving to the position of the tester 6, which is beneficial to simulating the actual use state of the water heater during testing. And during the flipping process, the positioning strip 13 always supports the clamping box 4, which is beneficial to the stable flipping of the clamping box 4 and the water heater, and prevents the sudden flipping of the water heater, resulting in the damage of the internal electrical components.

[0048] As a further implementation scheme of the present invention, the correction clamping mechanism includes a circular through groove 16, which is arranged on the top surface of the clamping box 4, and an outer ring plate 17 is rotatably connected inside the circular through groove 16, and a correction plate 18 is rotatably connected on the inner ring surface of the outer ring plate 17, and two support plates 19 are symmetrically fixed on the top surface of the outer ring plate 17, and two electric push rods 20 are fixed on the side wall of each support plate 19, and a clamping plate 21 is fixed at the end of the piston rod of the electric push rod 20, and a limiting mechanism is arranged on the bottom surface of the outer ring plate 17, and when the outer ring plate 17 is horizontal, the limiting mechanism links the positioning strip 13 to position the bottom of the outer ring plate 17; during operation, when loading, the staff places the water heater on the correction plate 18, and drives the correction plate 18 to rotate by rotating the water heater, so that the water heater is located in the clamping position. The electric push rod 20 can be directly started to drive the clamping plate 21 close to the water heater. Since two electric push rods 20 and clamping plates 21 are arranged on the same support plate 19, during the clamping process, one of the clamping plates 21 contacts the water heater first and pushes the water heater to rotate the water heater and the correction plate 18 until they contact the other clamping plate 21 on the same side, so that the position of the water heater is parallel to the clamping plate. Finally, the water heater is stably clamped by the four clamping plates 21, thereby realizing the function of automatic correction and synchronous clamping of the position of the water heater, which is beneficial to saving the time of adjusting the clamping position of the water heater during the loading process, thereby facilitating the acceleration of the detection process.

[0049] As a further embodiment of the present invention, the limiting mechanism includes a positioning shaft 22, a sliding groove 23, and a positioning block 24. The positioning shaft 22 is fixed to the bottom surface of the outer ring plate 17. The sliding groove 23 is formed in the bottom surface of the clamping box 4. The positioning block 24 is slidably connected to the inside of the sliding groove 23. A positioning groove 25 is formed in the middle of the positioning block 24. The positioning shaft 22 is inserted into the positioning groove 25. A first spring 26 is fixed to the top of the positioning block 24. The top of the first spring 26 is fixed with a fixing piece 27. The fixing piece 27 is fixed to the inner wall of the clamping box 4. The bottom of the positioning block 24 abuts against the top surface of the positioning strip 13, and an inclined surface is formed on the bottom surface of the positioning block 24. During operation, when the clamping box 4 is in a horizontal state, the positioning strip 13 abuts against the positioning block 24 on the bottom surface of the clamping box 4, thereby pushing the positioning block 24 upward into the clamping box 4. The positioning shaft 22 is positioned through the positioning groove 25, thereby positioning the outer ring plate 17, which is beneficial to maintaining the stability of the outer ring plate 17 during the feeding process and preventing the outer ring plate 17 from rotating with the correction plate 18 during the clamping process. After the clamping box 4 is in a vertical state, the positioning strip 13 is separated from the clamping box 4. Under the elastic force of the first spring 26, the positioning block 24 is pushed downward, so that the positioning block 24 is separated from the positioning shaft 22, canceling the positioning state of the outer ring plate 17, which is beneficial for the staff to rotate and adjust the water heater when installing the lines or pipes at the bottom of the water heater. By providing an inclined surface on the bottom surface of the positioning block 24, it is convenient for the positioning strip 13 to push up the positioning block 24 by pressing the inclined surface on the bottom surface of the positioning block 24 during the later reset process, and re-implement the limiting of the positioning state of the outer ring plate 17.

[0050] As a further embodiment of the present invention, an adjustment mechanism is provided below the outer ring plate 17. The adjustment mechanism is used for unidirectional rotation adjustment of the outer ring plate 17. The adjustment mechanism includes a volute spring 28. The volute spring 28 is arranged below the outer ring plate 17. One end of the volute spring 28 is fixed on the positioning shaft 22, and the other end of the volute spring 28 is fixed with a connecting column 29. The connecting column 29 is fixed on the inner bottom surface of the clamping box 4. A unidirectional positioning mechanism is arranged between the outer ring plate 17 and the volute spring 28. The unidirectional positioning mechanism is used for adjusting the rotation direction of the outer ring plate 17 and performing unidirectional positioning. During operation, in the prior art during the detection process, although the water heater is erected to keep the water heater in the same state as the actual use state, the position of the erected water heater is fixed, and the operating space between the water heater and the test equipment is small. When manually connecting the water heater to the lines and pipelines in the performance detection system, it is difficult to adjust the position of the water heater, and the operation is relatively difficult, thus affecting the detection process. The present technical solution can solve the above problems. The specific working method is as follows. When the clamping box 4 is in a vertical state and the staff needs to connect the pipelines at the bottom of the water heater, the rotation direction of the outer ring plate 17 is adjusted through the unidirectional positioning mechanism, and then the water heater is rotated to drive the outer ring plate 17 to rotate. After adjusting the position of the water heater, the outer ring plate 17 is timely unidirectionally positioned through the unidirectional limiting mechanism to prevent the water heater from rotating back under the action of the volute spring 28, which is beneficial to maintaining the stability of the water heater when installing the pipelines at the bottom of the water heater and facilitating the installation of the pipelines.

[0051] As a further embodiment of the present invention, the one-way positioning mechanism includes a sector plate 30, a connecting shaft 31, an adjustment groove 32, and a gear ring 33. The gear ring 33 is sleeved and fixed on the bottom surface of the outer ring plate 17. The sector plate 30 is arranged between the scroll spring 28 and the gear ring 33. One end of the sector plate 30 is rotatably connected to the inner bottom surface of the clamping box 4. The axis center of the sector plate 30 and the center of the gear ring 33 are on the same rotation axis. An arc-shaped strip 34 is fixed at the top surface edge of the other end of the sector plate 30. The arc-shaped strip 34 is sleeved outside the gear ring 33. The adjustment groove 32 is opened on the side wall of the clamping box 4. An adjustment rod 35 is inserted inside the adjustment groove 32. The end of the adjustment rod 35 is fixed on the outer wall of the arc-shaped strip 34. The connecting shafts 31 are symmetrically fixed on the inner top surface of the clamping box 4. A clamping strip 36 is rotatably connected to the connecting shaft 31. A torsion spring 37 is sleeved on the connecting shaft 31. One end of the torsion spring 37 is fixed on the connecting shaft 31, and the other end of the torsion spring 37 is fixed on the clamping strip 36. One of the clamping strips 36 abuts against the teeth of the gear ring 33, and the other clamping strip 36 abuts against the outer wall of the arc-shaped strip 34. Arc-shaped surfaces are opened on the opposite sides of the two clamping strips 36; during operation, by moving the position of the adjustment rod 35 in the adjustment groove 32, the position of the arc-shaped strip 34 is adjusted. Under the guiding action of the arc-shaped surface, different clamping strips 36 are lifted by the arc-shaped strip 34, so that the clamping strip 36 is not in contact with the gear ring 33. When the adjustment rod 35 is located at the middle position of the adjustment groove 32, different clamping strips 36 on both sides of the arc-shaped strip 34 are lifted simultaneously to cancel the limit. When the adjustment rod 35 is located at both ends of the adjustment groove 32, one side of the arc-shaped strip 34 will lift one of the clamping strips 36 to cancel the positioning state of one of the clamping strips 36 on the gear ring 33. By rotating the arc-shaped strip 34, different clamping strips 36 are switched to the positioning state with the gear ring 33, so as to realize the one-way positioning function in different directions of the outer ring plate 17. After the staff rotates the outer ring plate 17 and the water heater to a suitable position, the outer ring plate 17 is positioned in time through the clamping strip 36, so that the water heater is kept stable, which is beneficial for the staff to install the circuits and pipelines on the water heater. And after the two clamping strips 36 are lifted simultaneously by the arc-shaped strip 34, under the elastic force of the scroll spring 28, the outer ring plate 17 can drive the water heater to automatically reset, further saving the installation time in the detection process and being beneficial for accelerating the detection process.

[0052] As a further embodiment of the present invention, a buffer positioning mechanism for positioning the clamping box 4 is provided at the position of the operating port 7 of the shell 1, and the buffer positioning mechanism includes a limit bar 38 and a first positioning plate 39. The limit bar 38 is fixed between the two sliding bars 3, and the first positioning plate 39 is fixed on the inner wall of the shell 1. A second spring 40 is fixed at the end of the first positioning plate 39 away from the operating port 7, and a second positioning plate 41 is fixed at the end of the second spring 40. During operation, when the clamping box 4 is vertical, one side of the clamping box 4 is limited by the limit bar 38, and the clamping box 4 continues to move until it contacts the second positioning plate 41, pushing the second positioning plate 41 to compress the spring, causing the spring to shorten and generate elastic force, so that the clamping box 4 is clamped between the second positioning plate 41 and the limit bar 38, which is beneficial to automatically positioning the vertical state of the clamping box 4 before detection.

[0053] Working principle of the present invention:

[0054] During loading, the clamping box 4 is in a horizontal state, and the water heater is placed on the top surface of the clamping box 4. The water heater is clamped by a correction clamping mechanism and the position of the water heater is automatically corrected simultaneously, so that the water heater and the inner wall of the shell 1 remain level. The position of the water heater is automatically and synchronously adjusted during the clamping process, which is beneficial to saving time for manual adjustment of the clamping position, thereby facilitating the acceleration of the detection process. The sliding bar 3 is driven by the driving mechanism to slide inside the guide groove 2, and the clamping box 4 is driven to move inside the shell 1 through the two sliding bars 3. During the movement of the clamping box 4, the clamping box 4 is flipped over by the sliding bar 3 linkage guide mechanism. During the movement, the position of the water heater on the top surface of the clamping box 4 is automatically adjusted, so that the water heater remains in a vertical state before moving to the position of the tester 6, which is beneficial to simulate the actual usage state of the water heater for testing during testing.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for testing the performance of a gas water heater, characterized in that: The test method includes the following steps: Step 1: Place the water heater on the performance test device, then clamp the water heater through the performance test device and automatically correct the position of the water heater synchronously, so that the water heater is kept horizontal with the inner wall of the performance test device; Step 2: Convey the water heater through the performance test device, and during the conveying process, turn the water heater synchronously so that the water heater is kept in a vertical state before the test; Step 3: Before the test, rotate the water heater through the performance test device, connect the pipeline at the bottom of the water heater to the performance test device, and timely position the water heater through the performance test device. After the installation is completed, make the water heater automatically reset through the performance test device; Step 4: Test the performance of the water heater through the performance test device; The performance test device in Steps 1 to 4 includes a housing (1). On both side walls inside the housing (1), two guide grooves (2) are symmetrically opened. A sliding bar (3) is slidably connected inside the guide groove (2). A driving mechanism is arranged inside one of the guide grooves (2). The driving mechanism is used to drive the sliding bar (3) to slide inside the guide groove (2). A clamping box (4) is horizontally arranged between the two sliding bars (3). One end of the clamping box (4) is fixed with a rotating shaft (5). Both ends of the rotating shaft (5) are respectively rotatably connected to the side walls of the corresponding sliding bars (3). A guiding mechanism is arranged at the other end of the clamping box (4). When the sliding bar (3) moves, the sliding bar (3) drives the guiding mechanism to turn the clamping box (4) to a vertical state; A correction clamping mechanism is arranged on the top surface of the clamping box (4). The correction clamping mechanism is used to clamp the water heater and automatically correct the position of the water heater synchronously. A tester (6) is fixed on the side of the housing (1) away from the clamping box (4). An operation opening (7) is opened on the side wall of the housing (1) near the tester (6); The guiding mechanism includes two guiding grooves (10) and a sliding groove (11). The two guiding grooves (10) are symmetrically opened on the inner wall of the housing (1), and both of the two guiding grooves (10) are inclined. The height of one end of the guiding groove (10) close to the operation opening (7) is lower than that of the other end. A guiding block (12) is slidably connected inside each of the two guiding grooves (10). A positioning bar (13) is fixedly connected between the two guiding blocks (12). The top of the positioning bar (13) is in contact with the bottom of the clamping box (4). A pulling spring (14) is fixed on the outer wall of one end of the guiding block (12) close to the lowest part of the guiding groove (10). The end of the pulling spring (14) is fixed on the inner wall of the lowest part of the guiding groove (10). The sliding groove (11) is opened on the inner bottom surface of the guide groove (2). The sliding groove (11) is connected to the inside of the guiding groove (10). A baffle (15) is slidably connected inside the sliding groove (11). The top end of the baffle (15) is fixed to the sliding bar (3). One side of the baffle (15) abuts against the guiding block (12); The calibration clamping mechanism includes a circular through groove (16) opened on the top surface of the clamping box (4). An outer ring plate (17) is rotatably connected inside the circular through groove (16). A calibration plate (18) is rotatably connected to the inner ring surface of the outer ring plate (17). Two support plates (19) are symmetrically fixed on the top surface of the outer ring plate (17). Two electric push rods (20) are fixed on the side wall of each support plate (19). A clamping plate (21) is fixed at the end of the piston rod of the electric push rod (20). A limiting mechanism is arranged on the bottom surface of the outer ring plate (17). When the outer ring plate (17) is horizontal, the limiting mechanism drives the positioning strip (13) to position the bottom of the outer ring plate (17). An adjusting mechanism is arranged below the outer ring plate (17). The adjusting mechanism is used for unidirectional rotation adjustment of the outer ring plate (17). The adjusting mechanism includes a volute spring (28). The volute spring (28) is arranged below the outer ring plate (17). One end of the volute spring (28) is fixed on a positioning shaft (22). The other end of the volute spring (28) is fixed with a connecting column (29). The connecting column (29) is fixed on the inner bottom surface of the clamping box (4). A unidirectional positioning mechanism is arranged between the outer ring plate (17) and the volute spring (28). The unidirectional positioning mechanism is used for adjusting the rotation direction of the outer ring plate (17) and performing unidirectional positioning. The unidirectional positioning mechanism includes a sector plate (30), a connecting shaft (31), an adjusting groove (32), and a gear ring (33). The gear ring (33) is sleeved and fixed on the bottom surface of the outer ring plate (17). The sector plate (30) is arranged between the volute spring (28) and the gear ring (33). One end of the sector plate (30) is rotatably connected to the inner bottom surface of the clamping box (4). The axis center of the sector plate (30) and the center of the gear ring (33) are on the same rotation axis. An arc-shaped strip (34) is fixed at the edge of the top surface of the other end of the sector plate (30). The arc-shaped strip (34) is sleeved outside the gear ring (33). The adjusting groove (32) is opened on the side wall of the clamping box (4). An adjusting rod (35) is inserted into the adjusting groove (32). The end of the adjusting rod (35) is fixed on the outer wall of the arc-shaped strip (34). The connecting shafts (31) are symmetrically fixed on the inner top surface of the clamping box (4). A clamping strip (36) is rotatably connected to the connecting shaft (31). A torsion spring (37) is sleeved on the connecting shaft (31). One end of the torsion spring (37) is fixed on the connecting shaft (31). The other end of the torsion spring (37) is fixed on the clamping strip (36). One of the clamping strips (36) abuts against the teeth of the gear ring (33). The other clamping strip (36) abuts against the outer wall of the arc-shaped strip (34). Arc-shaped surfaces are opened on the opposite sides of the two clamping strips (36).

2. A method for testing the performance of a gas water heater according to claim 1, characterized in that: The driving mechanism includes a motor (8), the motor (8) is fixed on the inner wall of the guide rail groove (2), a screw rod (9) is fixed at the end of the output shaft of the motor (8), the screw rod (9) threadedly penetrates through the corresponding sliding strip (3) and extends out and then is rotatably connected to the inner wall of the guide rail groove (2).

3. A performance testing method for a gas water heater according to claim 1, characterized in that: The limiting mechanism includes a positioning shaft (22), a sliding groove (23), and a positioning block (24). The positioning shaft (22) is fixed on the bottom surface of the outer ring plate (17). The sliding groove (23) is formed on the bottom surface of the clamping box (4). The positioning block (24) is slidably connected inside the sliding groove (23). A positioning groove (25) is formed in the middle of the positioning block (24). The positioning shaft (22) is inserted into the positioning groove (25). A first spring (26) is fixed at the top of the positioning block (24). A fixing piece (27) is fixed at the top of the first spring (26). The fixing piece (27) is fixed on the inner wall of the clamping box (4). The bottom of the positioning block (24) abuts against the top surface of the positioning strip (13), and an inclined surface is formed on the bottom surface of the positioning block (24).

4. A method for testing the performance of a gas water heater according to claim 1, characterized in that: A buffer positioning mechanism for positioning the clamping box (4) is arranged at the position of the operation port (7) of the housing (1). The buffer positioning mechanism includes a limiting strip (38) and a first positioning plate (39). The limiting strip (38) is fixed between the two sliding strips (3). The first positioning plate (39) is fixed on the inner wall of the housing (1). A second spring (40) is fixed at one end of the first positioning plate (39) away from the operation port (7). The end of the second spring (40) is fixed with a second positioning plate (41).

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