Nodular cast iron pipe fitting hardness measuring device

Abstract

The utility model discloses a hardness measuring device for a nodular cast iron pipe fitting. The hardness measuring device comprises a bottom core supporting plate body, supporting plate bodies are symmetrically arranged on the upper side of the bottom core supporting plate body, U-shaped supports are symmetrically arranged on the two sides of the bottom core supporting plate body, core hydraulic telescopic rod bodies are fixedly arranged in the middles of the backs of the upper portions of the U-shaped supports, and the core portions of the core hydraulic telescopic rod bodies are fixedly connected with the backs of the upper portions of the U-shaped supports. A telescopic part of the core hydraulic telescopic rod body extends downwards, a pressure sensor is fixedly arranged at the tail end of the telescopic part of the core hydraulic telescopic rod body, and an extrusion block is fixedly arranged on the lower portion of the pressure sensor; and high-precision measurement: through the combination of the core hydraulic telescopic rod body and the pressure sensor, the pressure applied to the nodular cast iron pipe fitting can be accurately controlled, and the pressure value can be accurately measured. And the distance sensor can monitor the deformation of the pipe fitting in real time when the pipe fitting is pressed, so that the hardness of the pipe fitting is evaluated more accurately.

Description

Technical Field

[0001] The utility model relates to hardness measurement, in particular to a device for measuring the hardness of a ductile iron pipe fitting. Background Art

[0002] Ductile iron pipe fittings are widely used in industrial production and quality control due to their excellent mechanical and casting properties. However, to ensure that the quality of ductile iron pipe fittings meets standard requirements, hardness testing is essential. Hardness testing not only reflects the material's compressive and wear resistance, but also helps manufacturers identify production problems promptly, allowing them to take appropriate measures to improve product quality.

[0003] Traditional methods for measuring the hardness of ductile iron pipe fittings have several drawbacks: Low accuracy: Traditional methods often rely on manual pressure or simple mechanical devices for hardness testing. This makes it difficult to precisely control the applied pressure, resulting in inaccurate measurement results. The lack of effective means to monitor the deformation of the pipe fittings under pressure in real time makes the hardness assessment less comprehensive and accurate.

[0004] Insufficient reliability: During traditional measurement processes, pipes are prone to displacement or rotation, especially when high pressure is applied, which reduces the reliability of measurement results. The hydraulic telescopic rod sometimes freezes, affecting the smooth progress of the test and increasing test errors.

[0005] Therefore, there is an urgent need for a better ductile iron pipe hardness measuring device on the market. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a device for measuring the hardness of ductile iron pipe fittings.

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is a ductile iron pipe hardness measuring device: comprising a bottom core support plate;

[0008] A support plate is symmetrically provided on the upper side of the bottom core support plate, and the extension direction of the support plate is parallel to the extension direction of the running wheel set; a long pad is provided on the support plate;

[0009] U-shaped brackets are symmetrically provided on both sides of the bottom core support plate, with the openings of the U-shaped brackets facing downward, and the ends of the side wings of the U-shaped brackets are fixedly connected to the two sides of the bottom core support plate;

[0010] A core hydraulic telescopic rod body is fixedly provided at the middle of the upper back of the U-shaped bracket. The core portion of the core hydraulic telescopic rod body is fixedly connected to the upper back of the U-shaped bracket. The telescopic portion of the core hydraulic telescopic rod body extends downward. A pressure sensor is fixedly provided at the end of the telescopic portion of the core hydraulic telescopic rod body. An extrusion block is fixedly provided at the lower portion of the pressure sensor.

[0011] An auxiliary hydraulic telescopic rod body is symmetrically fixed on the side of the upper back of the U-shaped bracket. The core part of the auxiliary hydraulic telescopic rod body is fixedly connected to the upper back of the U-shaped bracket. The telescopic part of the auxiliary hydraulic telescopic rod body extends inward and downward, and the end of the telescopic part of the auxiliary hydraulic telescopic rod body is fixed with a limiting support rod block.

[0012] As an improvement, the end of the telescopic part of the auxiliary hydraulic telescopic rod is fixed with a guide reinforcing rod, and the side of the upper back of the U-shaped bracket is symmetrically fixed with a guide sleeve, and the guide reinforcing rod passes through the guide sleeve and slides with the guide sleeve.

[0013] As an improvement, distance sensors are symmetrically provided on the sides of the middle portion of the U-shaped bracket, and the distance sensors are arranged downward.

[0014] As an improvement, a push handle frame is fixed on the upper rear side of the U-shaped bracket side wing, and a hydraulic controller and a pressure display are fixed on the push handle frame;

[0015] The pressure display and the distance sensor are electrically connected, the pressure display and the pressure sensor are electrically connected, and the pressure display and the battery are electrically connected;

[0016] A rear side plate is fixedly provided on the rear side of the bottom core support plate, and a battery and an electric hydraulic pump are fixed on the rear side plate. The hydraulic controller and the electric hydraulic pump are connected, and the electric hydraulic pump and the battery are electrically connected; the hydraulic controller and the core hydraulic telescopic rod are oil-connected, and the hydraulic controller and the auxiliary hydraulic telescopic rod are oil-connected.

[0017] As an improvement, a reinforcing plate is fixed between the side wings of the U-shaped bracket and the upper back of the U-shaped bracket.

[0018] As an improvement, the projection of the bottom core support plate in the top view is rectangular, and walking wheel sets are symmetrically provided on both sides of the bottom core support plate.

[0019] The advantages of this new device over existing technologies include: High-precision measurement: Through the combination of a core hydraulic telescopic rod and a pressure sensor, the pressure applied to ductile iron pipes can be precisely controlled and accurately measured. The distance sensor can monitor the deformation of the pipe under pressure in real time, thereby more accurately assessing its hardness.

[0020] High reliability: The combination of the auxiliary hydraulic telescopic rod and the limit support rod effectively secures the ductile iron pipe, preventing displacement or rotation during measurement and ensuring measurement accuracy. The sliding fit design of the guide reinforcement rod and guide sleeve ensures smooth movement of the hydraulic telescopic rod, reducing errors caused by mechanical jamming.

[0021] Stability: The rectangular core support plate provides a stable foundation, ensuring that measurements are not affected by external interference. The fixed connection between the U-shaped bracket and the core support plate enhances the stability of the entire device, and the reinforcement plate on the U-shaped bracket further strengthens the structure.

[0022] Strong adaptability: The device can be applied to ductile iron pipe fittings of different sizes and shapes. By adjusting the position of the auxiliary hydraulic telescopic rod, it can adapt to pipe fittings of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional schematic diagram of a ductile iron pipe hardness measuring device of the utility model. Figure 1 .

[0024] Figure 2 This is a three-dimensional schematic diagram of a ductile iron pipe hardness measuring device of the utility model. Figure 2 .

[0025] Figure 3 This is a three-dimensional schematic diagram of a ductile iron pipe hardness measuring device of the utility model. Figure 3 .

[0026] Figure 4 The utility model is a three-dimensional structural schematic diagram of a ductile iron pipe hardness measuring device in use. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the utility model is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0029] Furthermore, the use of terms such as "horizontal," "vertical," and "overhanging" does not necessarily imply that the component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0030] In the description of the embodiments of the present invention, “a plurality of” means at least 2.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In conjunction with the accompanying drawings, a ductile iron pipe hardness measuring device includes a bottom core support plate 1, the bottom core support plate 1 is projected in a rectangular shape when viewed from above, and walking wheels 2 are symmetrically provided on both sides of the bottom core support plate 1;

[0033] A support plate 3 is symmetrically provided on the upper side of the bottom core support plate 1. The extension direction of the support plate 3 is parallel to the extension direction of the running wheel set 2. A long pad 4 is provided on the support plate 3.

[0034] U-shaped brackets 5 are symmetrically provided on both sides of the bottom core support plate 1, with the opening of the U-shaped bracket 5 facing downward, and the ends of the side wings 6 of the U-shaped bracket 5 are fixedly connected to both sides of the bottom core support plate 1;

[0035] A core hydraulic telescopic rod 8 is fixedly provided in the middle of the upper back portion 7 of the U-shaped bracket 5. The core portion of the core hydraulic telescopic rod 8 is fixedly connected to the upper back portion 7 of the U-shaped bracket 5. The telescopic portion of the core hydraulic telescopic rod 8 extends downward. A pressure sensor 9 is fixedly provided at the end of the telescopic portion of the core hydraulic telescopic rod 8. An extrusion block 10 is fixedly provided at the lower portion of the pressure sensor 9.

[0036] An auxiliary hydraulic telescopic rod 11 is symmetrically fixed to the side of the upper back 7 of the U-shaped bracket 5. The core of the auxiliary hydraulic telescopic rod 11 is fixedly connected to the upper back 7 of the U-shaped bracket 5. The telescopic portion of the auxiliary hydraulic telescopic rod 11 extends inward and obliquely downward. The end of the telescopic portion of the auxiliary hydraulic telescopic rod 11 is fixed with a limit support rod block 12; the end of the telescopic portion of the auxiliary hydraulic telescopic rod 11 is fixed with a guide reinforcement rod 13. A guide sleeve 14 is symmetrically fixed to the side of the upper back 7 of the U-shaped bracket 5. The guide reinforcement rod 13 passes through the guide sleeve 14 and slides with the guide sleeve 14.

[0037] The distance sensor 15 is symmetrically provided on the side of the middle portion of the U-shaped bracket 5, and the distance sensor 15 is arranged downward;

[0038] A reinforcing plate 16 is fixed between the side wing 6 of the U-shaped bracket 5 and the upper back 7 of the U-shaped bracket 5;

[0039] A push handle frame 17 is fixed to the upper rear portion of the side wing 6 of the U-shaped bracket 5, and a hydraulic controller 18 and a pressure display 19 are fixed to the push handle frame 17;

[0040] The pressure display 19 is electrically connected to the distance sensor 15 , the pressure display 19 is electrically connected to the pressure sensor 9 , and the pressure display 19 is electrically connected to the battery 20 ;

[0041] A rear side plate 21 is fixedly provided on the rear side of the bottom core support plate 1, and a battery 20 and an electric hydraulic pump 22 are fixed on the rear side plate 21. The hydraulic controller 18 and the electric hydraulic pump 22 are connected, and the electric hydraulic pump 22 and the battery 20 are electrically connected; the hydraulic controller 18 and the core hydraulic telescopic rod 8 are oil-connected, and the hydraulic controller 18 and the auxiliary hydraulic telescopic rod 11 are oil-connected.

[0042] First, use the walking wheels 2 symmetrically arranged on both sides of the bottom core support plate 1 to move the entire ductile iron pipe hardness measuring device to a suitable work site. Make sure the site is flat so that the device can be placed stably.

[0043] Check whether the various components of the device are firmly connected, especially the connection between the bottom core support plate 1 and other components. Check whether the walking wheel group 2 can rotate normally without any jamming.

[0044] Pipe Fitting Placement: Carefully place the ductile iron pipe fittings on the elongated pads 4, symmetrically positioned on the support plate 3. Ensure the pipe fittings are properly positioned on the elongated pads 4 to ensure uniform force during subsequent measurements. Because the support plates 3 are symmetrically positioned above the bottom core support plate 1 and extend parallel to the direction of the running wheels 2, this helps ensure stable pipe placement.

[0045] Pipe Fixing: By operating the hydraulic controller 18 on the push handle frame 17, the auxiliary hydraulic telescopic rod 11 is activated to extend. The core of the auxiliary hydraulic telescopic rod 11 is fixed to the upper back portion 7 of the U-shaped bracket 5. Its telescopic portion extends inward and downward. As the telescopic portion extends, the fixed limit support rod block 12 at the end gradually approaches the ductile iron pipe until it is firmly fixed, preventing horizontal movement of the pipe during measurement. At the same time, a guide reinforcement rod 13 is also fixed to the end of the telescopic portion of the auxiliary hydraulic telescopic rod 11. The guide reinforcement rod 13 passes through and slides with the guide sleeve 14 symmetrically arranged on the side of the upper back portion 7 of the U-shaped bracket 5. This structure ensures the stability and guidance of the auxiliary hydraulic telescopic rod 11 during extension and extension.

[0046] Applying Pressure: After the pipe is secured, operate the hydraulic controller 18 again to begin extending the core hydraulic telescopic rod 8. The core portion of the core hydraulic telescopic rod 8 is fixed to the center of the upper back portion 7 of the U-shaped bracket 5. The telescopic portion extends downward. A pressure sensor 9 is fixed to the end of the telescopic portion, and an extrusion block 10 is fixed below the pressure sensor 9. As the core hydraulic telescopic rod 8 extends, the extrusion block 10 gradually compresses the ductile iron pipe.

[0047] Data collection: During the extrusion process, the pressure sensor 9 senses the pressure applied by the extrusion block 10 on the pipe and transmits the pressure signal to the pressure display 19 electrically connected thereto. The pressure display 19 displays the current applied pressure value in real time.

[0048] At the same time, the distance sensors 15 symmetrically arranged on the side of the middle part of the U-shaped bracket 5 and facing downward will sense the deformation of the ductile iron pipe when it is squeezed and transmit the deformation information to the pressure display 19.

[0049] High-precision measurement: The combination of the core hydraulic telescopic rod 8 and pressure sensor 9 precisely controls and measures the pressure applied to the ductile iron pipe. The distance sensor 15 monitors the pipe's deformation under pressure in real time, allowing for a more accurate assessment of its hardness.

[0050] High reliability: The combination of the auxiliary hydraulic telescopic rod 11 and the position-limiting support rod block 12 effectively secures the ductile iron pipe, preventing displacement or rotation during measurement and ensuring measurement accuracy. The sliding fit between the guide reinforcement rod 13 and the guide sleeve 14 ensures smooth movement of the hydraulic telescopic rod, reducing errors caused by mechanical jamming.

[0051] Good stability: The rectangular design of the bottom core support plate 1 provides a stable foundation, ensuring that the measurement results are not affected by external interference during the measurement process. The fixed connection between the U-shaped bracket 5 and the bottom core support plate 1 enhances the stability of the entire device. The reinforcing plate 16 on the U-shaped bracket 5 further enhances the structural strength.

[0052] Strong adaptability: the device can be applied to ductile iron pipe fittings of different sizes and shapes, and can adapt to pipe fittings of various specifications by adjusting the position of the auxiliary hydraulic telescopic rod body 11.

[0053] The design of the elongated pad 4 makes the pipe more stable during placement, reducing measurement errors caused by improper placement.

[0054] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A device for measuring the hardness of ductile iron pipe fittings, characterized by: It includes a bottom core support plate (1); A support plate body (3) is symmetrically provided on the upper side of the bottom core support plate body (1), and the extension direction of the support plate body (3) and the extension direction of the running wheel group (2) are parallel to each other; an elongated pad body (4) is provided on the support plate body (3); U-shaped brackets (5) are symmetrically provided on both sides of the bottom core support plate (1), the opening of the U-shaped bracket (5) faces downward, and the ends of the side wings (6) of the U-shaped bracket (5) are fixedly connected to both sides of the bottom core support plate (1); A core hydraulic telescopic rod (8) is fixedly provided at the middle of the upper back portion (7) of the U-shaped bracket (5); the core portion of the core hydraulic telescopic rod (8) is fixedly connected to the upper back portion (7) of the U-shaped bracket (5); the telescopic portion of the core hydraulic telescopic rod (8) extends downward; a pressure sensor (9) is fixedly provided at the end of the telescopic portion of the core hydraulic telescopic rod (8); and an extrusion block (10) is fixedly provided at the lower portion of the pressure sensor (9); An auxiliary hydraulic telescopic rod body (11) is symmetrically fixedly provided on the side of the upper back portion (7) of the U-shaped bracket (5); the core portion of the auxiliary hydraulic telescopic rod body (11) is fixedly connected to the upper back portion (7) of the U-shaped bracket (5); the telescopic portion of the auxiliary hydraulic telescopic rod body (11) extends inwardly and obliquely downward; and a position-limiting support rod block (12) is fixedly provided at the end of the telescopic portion of the auxiliary hydraulic telescopic rod body (11).

2. The device for measuring the hardness of a ductile iron pipe according to claim 1, characterized in that: A guide reinforcing rod (13) is fixed to the end of the telescopic portion of the auxiliary hydraulic telescopic rod (11), and a guide sleeve (14) is symmetrically fixed to the side of the upper back (7) of the U-shaped bracket (5), and the guide reinforcing rod (13) passes through the guide sleeve (14) and is slidably matched with the guide sleeve (14).

3. A ductile iron pipe hardness measuring device according to claim 2, characterized in that: Distance sensors (15) are symmetrically provided on the sides of the middle portion of the U-shaped bracket (5), and the distance sensors (15) are arranged downward.

4. A ductile iron pipe hardness measuring device according to claim 3, characterized in that: A push handle frame (17) is fixedly provided on the upper rear portion of the wing portion (6) of the U-shaped bracket (5), and a hydraulic controller (18) and a pressure display (19) are fixedly provided on the push handle frame (17); The pressure display (19) is electrically connected to the distance sensor (15), the pressure display (19) is electrically connected to the pressure sensor (9), and the pressure display (19) is electrically connected to the battery (20); A rear side plate (21) is fixedly provided on the rear side of the bottom core support plate (1), and a battery (20) and an electric hydraulic pump (22) are fixedly provided on the rear side plate (21); the hydraulic controller (18) and the electric hydraulic pump (22) are connected, and the electric hydraulic pump (22) and the battery (20) are electrically connected; an oil circuit is connected between the hydraulic controller (18) and the core hydraulic telescopic rod (8), and an oil circuit is connected between the hydraulic controller (18) and the auxiliary hydraulic telescopic rod (11).

5. The ductile iron pipe hardness measuring device according to claim 4, characterized in that: A reinforcing plate (16) is fixedly provided between the side wing portion (6) of the U-shaped bracket (5) and the upper back portion (7) of the U-shaped bracket (5).

6. The ductile iron pipe hardness measuring device according to claim 5, characterized in that: The projection of the bottom core support plate (1) in a top view is rectangular, and walking wheel sets (2) are symmetrically provided on both sides of the bottom core support plate (1).

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