Pressure resistance detection device for water meter shell

Abstract

The utility model discloses a water meter shell pressure resistance detection device, particularly relates to the technical field of water meter pressure resistance testing, and comprises a protection box, the middle part of the upper end of the protection box is fixedly connected with a hydraulic cylinder I, the middle part of the inner cavity of the protection box is fixedly connected with a supporting plate, and the middle part of the upper end of the supporting plate is fixedly connected with a placing table; a first extrusion mechanism is fixedly connected to the rear side of the upper end of the supporting plate, a second extrusion mechanism is fixedly connected to the lower end of the supporting plate, and extrusion assemblies are fixedly connected to the output end of the first hydraulic cylinder and the left portion and the right portion of the second extrusion mechanism. According to the pressure resistance detection device for the water meter shell, lateral pressure detection can be carried out on the water meter shell through the second extrusion mechanism and the extrusion assembly, and automatic adjustment and fitting can be carried out according to the specific shape and size of the water meter shell; detection errors caused by too large difference between a detection working condition and an actual working condition are effectively avoided, so that the detection accuracy is ensured.

Description

Technical Field

[0001] This utility model relates to the field of water meter pressure resistance technology, and in particular to a water meter casing pressure resistance testing device. Background Technology

[0002] With the continuous improvement of the intelligence and precision of water resource management, water meters, as key devices for measuring water usage, have their lifespan and measurement accuracy directly affected by the quality of their casing. During actual use, the water meter casing needs to withstand the internal pressure from the water supply pipeline and the physical forces of the external environment. Therefore, rigorous pressure resistance testing of the water meter casing has become an important step in ensuring the quality of water meters.

[0003] Currently, most water meter casing pressure resistance testing devices on the market use unidirectional pressure or fixed-shape pressure plates. These devices cannot simulate the multi-directional pressure conditions experienced by the water meter casing during actual use, leading to discrepancies between the test results and actual usage. Furthermore, due to the diverse specifications and shapes of water meters, existing testing devices cannot adaptively adjust to the contours of different water meter casings, making it difficult to comprehensively and accurately test some special-shaped or sized casings.

[0004] Furthermore, during the compression test, the existing device cannot effectively prevent the water meter casing from shifting or rotating under pressure. This not only affects the accuracy of the test data but may also cause uneven stress on the water meter casing, leading to misjudgment of the test results or even causing safety accidents.

[0005] Chinese Patent Publication No. CN221303033U discloses a water meter casing pressure resistance testing device, including a frame, a collection box placed at the lower end of the frame, a support plate welded to the lower end of the inner cavity of the frame, a protective shell slidably mounted on the upper end of the frame, and a chuck detachably mounted on the upper center of the support plate. The above-mentioned patent document's technical solution, through the frame, collection box, chuck, pull rope, and strip groove, allows the protective shell to adhere to the electromagnet when testing the water meter casing. Simultaneously, the pull rope is pulled, causing the scraper to move to both ends of the support plate, and the spring is stretched, thus protecting the outer side of the frame and reducing debris splashing. After testing, the spring can drive the slide rod to reset, the slide rod pulls the pull rope, the pull rope causes the protective shell to reset, and the scraper on the slide rod moves towards the center, causing the scraper to discharge debris on the support plate into the collection box, eliminating the need for manual cleaning.

[0006] However, the above-mentioned patent documents still have the following defects in practice;

[0007] Although the aforementioned patent document device can perform pressure resistance testing on the water meter casing, it cannot perform lateral pressure testing during use, nor can it automatically adjust and fit according to the specific shape and size of the water meter casing. This may lead to detection errors due to excessive differences between the testing conditions and actual conditions, thereby reducing the accuracy of the test. In addition, it cannot fix the water meter during pressure testing, which may cause the water meter casing to shift and shake. Utility Model Content

[0008] The main objective of this invention is to provide a water meter casing pressure resistance testing device, which can effectively solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A water meter casing pressure resistance testing device includes a protective box. A hydraulic cylinder is fixedly connected to the upper middle part of the protective box. A support plate is fixedly connected to the middle part of the inner cavity of the protective box. A placement platform is fixedly connected to the upper middle part of the support plate. A compression mechanism is fixedly connected to the upper rear side of the support plate. A compression mechanism is fixedly connected to the lower end of the support plate. Compression components are fixedly connected to the output end of the hydraulic cylinder and the left and right sides of the compression mechanism.

[0011] Preferably, the extrusion assembly includes a fixed box, which is fixedly connected to the output end of a hydraulic cylinder. Several springs are rectangularly distributed and fixedly connected to the upper wall of the inner cavity of the fixed box, and each of the springs has a pressure block fixedly connected to its lower end.

[0012] Preferably, the extrusion mechanism includes a support block and two L-shaped tubes. The support block is fixedly connected to the rear end of the upper fixed box. A plunger is fixedly connected to the lower end of the support block. The two L-shaped tubes are respectively fixedly connected to the left and right sides of the upper rear part of the support plate. A T-shaped pipe is fixedly connected between the horizontally opposite surfaces of the two L-shaped tubes. A hydraulic pipe is fixedly connected to the upper end of the T-shaped pipe. An elastic footprint is fixedly connected to the end of each of the two L-shaped tubes away from the T-shaped pipe on the same side. A clamping ring is fixedly connected to the end of each of the two elastic footprints that are close to each other. The lower part of the plunger extends through the upper end of the hydraulic pipe to the outside and is slidably connected to the inner cavity of the hydraulic pipe.

[0013] Preferably, the elastic footprint includes two circular tubes, with the ends of the two circular tubes respectively fixedly connected to the ends of the two L-shaped tubes respectively. The inner cavities of the two circular tubes are slidably connected to piston discs. The ends of the two piston discs are respectively fixedly connected to straight tubes. The inner cavities of the two straight tubes are respectively fixedly connected to springs II. The ends of the two springs II are respectively fixedly connected to support columns. The two support columns are respectively slidably connected to the inner cavities of the straight tubes on the same side.

[0014] Preferably, the ends of the two clamping rings that are far apart from each other are fixedly connected to the ends of the two support columns that are close to each other.

[0015] Preferably, the second extrusion mechanism includes two fixed columns and a second hydraulic cylinder. The two fixed columns are respectively fixedly connected to the lower left and right sides of the support plate. The second hydraulic cylinder is fixedly connected to the middle of the bottom wall of the protective box. Sliding columns are fixedly connected to the front and rear sides of the two fixed columns that are close to each other. Sliding blocks are slidably connected to the left and right sides of the two sliding columns. Fixed plates are fixedly connected to the upper ends of the two sliding blocks. Rotating plates are rotatably connected to the two sliding plates that are close to each other. Rotating blocks are rotatably connected to the two rotating plates that are close to each other.

[0016] Preferably, the output end of the hydraulic cylinder is fixedly connected to the lower end of the rotating block, and a fixing box is fixedly connected to the end of each of the two fixing plates that are close to each other.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. During use, this utility model can perform lateral pressure detection on the water meter shell through the set extrusion mechanism two and extrusion components, and can automatically adjust and fit according to the specific shape and size of the water meter shell, effectively avoiding detection errors caused by excessive differences between the detection conditions and the actual conditions, thereby ensuring the accuracy of the detection.

[0019] 2. During use, the present invention uses a compression mechanism to fix the water meter during pressure testing, ensuring that the water meter casing remains vertical and fixed throughout the testing process. This allows the pressure from the upper and lower compressions to be accurately and evenly transmitted to all parts of the casing, avoiding local pressure concentration or insufficient pressure due to positional deviation, and greatly improving the accuracy and reliability of the test data. Attached Figure Description

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

[0021] Figure 2 This is a schematic cross-sectional view of the extrusion assembly of this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the extrusion mechanism of this utility model;

[0023] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a schematic diagram of the two-section structure of the extrusion mechanism of this utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0026] In the diagram: 1. Protective box; 2. Support plate; 3. Hydraulic cylinder one; 4. Extrusion assembly; 41. Fixing box; 42. Spring one; 43. Pressure block; 5. Extrusion mechanism one; 51. Support block; 52. Piston; 53. Hydraulic pipe; 54. T-pipe; 55. L-shaped pipe; 56. Elastic footprint; 561. Round pipe; 562. Piston disc; 563. Straight pipe; 564. Spring two; 565. Support column; 57. Clamping ring; 6. Extrusion mechanism two; 61. Fixing column; 62. Sliding column; 63. Sliding block; 64. Hydraulic cylinder two; 65. Fixing plate; 66. Rotating plate; 67. Rotating block; 7. Placement platform. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Example 1, as Figures 1 to 6 As shown, a water meter casing pressure resistance testing device includes a protective box 1. A hydraulic cylinder 3 is fixedly connected to the upper middle part of the protective box 1. A support plate 2 is fixedly connected to the middle part of the inner cavity of the protective box 1. A placement platform 7 is fixedly connected to the upper middle part of the support plate 2. A pressing mechanism 5 is fixedly connected to the upper rear side of the support plate 2. A pressing mechanism 6 is fixedly connected to the lower end of the support plate 2. Pressing components 4 are fixedly connected to the output end of the hydraulic cylinder 3 and the left and right sides of the pressing mechanism 6.

[0029] In the specific implementation process of this utility model, firstly, the protective door at the front of the protective box 1 is opened by the staff, and then the water meter shell to be tested is placed on the upper end of the placement platform 7. Then, the hydraulic cylinder 3 is activated to drive the upper extrusion component 4 to press down and perform a pressure test on the water meter shell. During the pressing down of the extrusion component 4, the internal structure of the extrusion component 4 drives the internal structure of the extrusion mechanism 5 to operate. Under the movement of the internal structure of the extrusion mechanism 5, the bottom of the water meter is clamped, so that the water meter shell will not shake or shift during the vertical pressure test. After the vertical pressure test on the water meter shell, the hydraulic cylinder 3 drives the upper extrusion component 4 to rise. Then, the internal drive structure of the extrusion mechanism 6 is activated to drive the internal structure of the extrusion mechanism 6 to operate, so that the internal structure of the extrusion mechanism 6 performs a lateral pressure test on the water meter shell placed on the placement platform 7. After the test is completed, the protective door at the front of the protective box 1 is opened and the tested water meter shell is taken out.

[0030] Example 2: In order to achieve the goal of adapting to the shape of the water meter casing during pressure testing, refer to... Figure 2In this solution, the extrusion assembly 4 includes a fixed box 41, which is fixedly connected to the output end of the hydraulic cylinder 3. Several springs 42 are rectangularly distributed and fixedly connected to the upper wall of the inner cavity of the fixed box 41, and each of the springs 42 has a pressure block 43 fixedly connected to its lower end.

[0031] In the above process, the hydraulic cylinder 3 is activated to lower the fixed box 41, which in turn lowers several springs 42. The springs 42 then press the pressure block 43 against the water meter casing. During the test, the pressure blocks 43 are separated from each other and, under the action of the springs 42, adapt to the contour of the water meter casing.

[0032] Specifically, in order to secure the water meter during the vertical squeezing process, refer to Figure 3 In this scheme, the extrusion mechanism 5 includes a support block 51 and two L-shaped tubes 55. The support block 51 is fixedly connected to the rear end of the upper fixed box 41. A plunger 52 is fixedly connected to the lower end of the support block 51. The two L-shaped tubes 55 are respectively fixedly connected to the left and right sides of the upper rear part of the support plate 2. A three-way pipe 54 is fixedly connected between the horizontally opposite surfaces of the two L-shaped tubes 55. A hydraulic pipe 53 is fixedly connected to the upper end of the three-way pipe 54. An elastic footprint 56 is fixedly connected to the end of each of the two L-shaped tubes 55 away from the three-way pipe 54 on the same side. A clamping ring 57 is fixedly connected to the end of each of the two elastic footprints 56 that are close to each other. The lower part of the plunger 52 extends through the upper end of the hydraulic pipe 53 to the outside and is slidably connected to the inner cavity of the hydraulic pipe 53.

[0033] In the above process, the first step is to fill the inner cavity of the hydraulic pipe 53 with hydraulic oil.

[0034] Then, the upper fixing box 41 descends, causing the support block 51 to descend. The descending support block 51 then causes the plunger 52 to press down inside the hydraulic pipe 53, squeezing the hydraulic oil. The hydraulic oil then enters the inner cavity of the two L-shaped pipes 55 through the three-way pipe 54, and then enters the inner cavity of the elastic footprint 56 through the L-shaped pipe 55. This causes the hydraulic oil to push the two clamping rings 57 closer together, thus clamping and fixing the water meter casing. At the same time, the elastic footprint 56 ensures the force for fixing the water meter, ensuring that the casing is fixed without being damaged.

[0035] Specifically, in order to ensure that the water meter casing is secured without causing damage, refer to... Figure 3 and Figure 4In this scheme, the elastic footprint 56 includes two round tubes 561. The ends of the two round tubes 561 that are far apart from each other are respectively fixedly connected to the ends of two L-shaped tubes 55 that are far apart from each other. The inner cavities of the two round tubes 561 are slidably connected to piston discs 562. The ends of the two piston discs 562 that are close to each other are respectively fixedly connected to straight tubes 563. The inner cavities of the two straight tubes 563 are respectively fixedly connected to springs 564. The ends of the two springs 564 that are close to each other are respectively fixedly connected to support columns 565. The two support columns 565 are respectively slidably connected to the inner cavities of the straight tubes 563 on the same side.

[0036] Furthermore, the ends of the two clamping rings 57 that are far apart from each other are respectively fixedly connected to the ends of the two support columns 565 that are close to each other.

[0037] In the above process, hydraulic oil pushes the two piston discs 562 closer together, which in turn drives the two support columns 565 closer together. The two support columns 565 drive the two clamping rings 57 to clamp the outer casing. At the same time as the clamping rings 57 contact the outer casing, the two springs 564 cause the two support columns 565 to slide in the inner cavity of the straight tube 563 and squeeze the springs 564, thereby ensuring the squeezing force on the water meter outer casing.

[0038] Specifically, in order to conduct a lateral pressure test on the water meter casing, refer to Figure 5 In this scheme, the extrusion mechanism 6 includes two fixed columns 61 and a hydraulic cylinder 64. The two fixed columns 61 are fixedly connected to the lower left and right sides of the support plate 2, respectively. The hydraulic cylinder 64 is fixedly connected to the middle of the bottom wall of the inner cavity of the protective box 1. The front and rear sides of the two fixed columns 61 that are close to each other are fixedly connected to sliding columns 62. The left and right sides of the two sliding columns 62 are slidably connected to sliders 63. The upper ends of the two sliders 63 are fixedly connected to fixed plates 65. The ends of the two sliders 63 that are close to each other are rotatably connected to rotating plates 66. The ends of the two rotating plates 66 that are close to each other are rotatably connected to rotating blocks 67.

[0039] Furthermore, the output end of the second hydraulic cylinder 64 is fixedly connected to the lower end of the rotating block 67, and a fixing box 41 is fixedly connected to one end of each of the two fixing plates 65 that are close to each other.

[0040] In the above process, by activating hydraulic cylinder 64, the rotating block 67 is pulled downwards, which in turn causes the rotating block 67 to rotate the two rotating plates 66. As the two rotating plates 66 rotate relative to each other, the two sliders 63 move closer to each other on the surfaces of the two sliding columns 62. This causes the two sliders 63 to move closer to each other, which in turn causes the two fixed plates 65 to move closer to each other. This movement of the two fixed plates 65 in turn causes the two fixed boxes 41 to perform a lateral pressure test on the water meter casing.

[0041] It should be noted that the specific installation method, oil circuit connection method and control method of hydraulic cylinder 3 and hydraulic cylinder 64 used in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water meter casing pressure resistance testing device, comprising a protective box (1), characterized in that: A hydraulic cylinder (3) is fixedly connected to the middle of the upper end of the protective box (1). A support plate (2) is fixedly connected to the middle of the inner cavity of the protective box (1). A placement platform (7) is fixedly connected to the middle of the upper end of the support plate (2). A pressing mechanism (5) is fixedly connected to the rear side of the upper end of the support plate (2). A pressing mechanism (6) is fixedly connected to the lower end of the support plate (2). A pressing assembly (4) is fixedly connected to the output end of the hydraulic cylinder (3) and the left and right sides of the pressing mechanism (6).

2. The water meter casing pressure resistance testing device according to claim 1, characterized in that: The extrusion assembly (4) includes a fixed box (41), which is fixedly connected to the output end of the hydraulic cylinder (3). Several springs (42) are fixedly connected in a rectangular distribution on the upper wall of the inner cavity of the fixed box (41), and pressure blocks (43) are fixedly connected to the lower ends of the springs (42).

3. The water meter casing pressure resistance testing device according to claim 2, characterized in that: The extrusion mechanism (5) includes a support block (51) and two L-shaped tubes (55). The support block (51) is fixedly connected to the rear end of the upper fixed box (41). A plunger (52) is fixedly connected to the lower end of the support block (51). The two L-shaped tubes (55) are respectively fixedly connected to the left and right sides of the upper rear part of the support plate (2). A three-way pipe (54) is fixedly connected between the horizontal surfaces of the two L-shaped tubes (55). A hydraulic pipe (53) is fixedly connected to the upper end of the three-way pipe (54). An elastic footprint (56) is fixedly connected to the end of each of the two L-shaped tubes (55) away from the three-way pipe (54) on the same side. A clamping ring (57) is fixedly connected to the end of each of the two elastic footprints (56) that are close to each other. The lower part of the plunger (52) extends through the upper end of the hydraulic pipe (53) to the outside and is slidably connected to the inner cavity of the hydraulic pipe (53).

4. The water meter casing pressure resistance testing device according to claim 3, characterized in that: The elastic footprint (56) includes two round tubes (561), the ends of the two round tubes (561) that are far apart from each other are respectively fixedly connected to the ends of two L-shaped tubes (55) that are far apart from each other. The inner cavities of the two round tubes (561) are slidably connected to piston discs (562). The ends of the two piston discs (562) that are close to each other are respectively fixedly connected to straight tubes (563). The inner cavities of the two straight tubes (563) are respectively fixedly connected to springs (564). The ends of the two springs (564) that are close to each other are respectively fixedly connected to support columns (565). The two support columns (565) are respectively slidably connected to the inner cavities of the straight tubes (563) on the same side.

5. The water meter casing pressure resistance testing device according to claim 4, characterized in that: The ends of the two clamping rings (57) that are far apart from each other are respectively fixedly connected to the ends of the two support columns (565) that are close to each other.

6. The water meter casing pressure resistance testing device according to claim 2, characterized in that: The extrusion mechanism 2 (6) includes two fixed columns (61) and a hydraulic cylinder 2 (64). The two fixed columns (61) are fixedly connected to the left and right sides of the lower end of the support plate (2), respectively. The hydraulic cylinder 2 (64) is fixedly connected to the middle of the bottom wall of the inner cavity of the protective box (1). The front and rear sides of the two fixed columns (61) that are close to each other are fixedly connected to sliding columns (62). The left and right sides of the two sliding columns (62) are slidably connected to sliders (63). The upper ends of the two sliders (63) are fixedly connected to fixed plates (65). The ends of the two sliders (63) that are close to each other are rotatably connected to rotating plates (66). The ends of the two rotating plates (66) that are close to each other are rotatably connected to rotating blocks (67).

7. The water meter casing pressure resistance testing device according to claim 6, characterized in that: The output end of the hydraulic cylinder (64) is fixedly connected to the lower end of the rotating block (67), and the two fixed plates (65) are fixedly connected to a fixed box (41) at their close ends.

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