Strength detection equipment for nodular cast iron pipe

Abstract

The utility model relates to a nodular cast iron pipe strength detection device which comprises a base, mounting frames are vertically arranged on the top face of the base, a cross beam is transversely arranged between the mounting frames, the two ends of the cross beam extend into the two side walls of the mounting frames respectively, and a lifting adjusting assembly is further arranged in the mounting frames and assembled with the ends of the cross beam in a threaded mode. A connecting seat is arranged at the bottom of the cross beam; a pressing block is arranged in the center of the bottom surface of the connecting seat; a sliding groove is further formed in the top face of the base, two sliding blocks are arranged on the sliding groove, each sliding block is provided with a set of auxiliary positioning assembly, and the auxiliary positioning assemblies are attached to the side wall of the pipeline. According to the auxiliary positioning structure, the functions of various detection devices are integrated, a worker can detect the strength of the nodular cast iron pipe only through simple adjustment, the unfolding distance of the auxiliary positioning structure can be adjusted, the auxiliary positioning structure is used for detecting various pipelines of different specifications, and convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical testing equipment, in particular to a strength testing device for ductile iron pipes. Background Art

[0002] Ductile iron pipes are made by centrifugally casting 18-gauge or higher molten iron at high speed using a centrifugal ductile iron casting machine after adding a nodulizer. Ductile iron pipes, also known as ductile iron pipes, ductile iron pipes, and ductile iron pipes, are primarily used for conveying tap water and are an ideal material for water pipes.

[0003] To ensure the production quality of existing ductile iron pipes, samples are taken from the pipes and subjected to mechanical tests, mainly including tensile strength, bending strength, deformation strength and elongation. However, commonly used testing equipment generally only has one testing function, and the fixed structure it adopts cannot be flexibly adjusted. In particular, when testing pipes of different diameters, the tooling fixtures need to be frequently replaced, which is very inconvenient to use. Utility Model Content

[0004] Based on the above description, the utility model provides a strength testing device for ductile iron pipes to solve the shortcomings of existing mechanical testing equipment that usually only has one testing function, and the fixed structure on the equipment cannot be adjusted according to the pipe diameter, and the tooling needs to be frequently replaced, which is very inconvenient to use.

[0005] The utility model is realized through the following technical solutions:

[0006] A strength testing device for ductile iron pipes includes a base, a mounting frame is vertically provided on the top surface of the base, a crossbeam is horizontally arranged between the mounting frames, and the two ends of the crossbeam extend to the inside of the two side walls of the mounting frames respectively, a lifting and adjusting component is also provided inside the mounting frame and is threadedly assembled with the end of the crossbeam, a connecting seat is also provided at the bottom of the crossbeam, and a pressure block is provided at the center of the bottom surface of the connecting seat; a slide groove is also provided on the top surface of the base, two sliders are provided on the slide groove, and each of the sliders is provided with a group of auxiliary positioning components, and the auxiliary positioning components are arranged in contact with the side walls of the pipe.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the mounting frame is a rectangular pillar vertically arranged at both ends of the top surface of the base, and the interior of the mounting frame is hollow and has an opening on the opposite side. The two ends of the beam extend outward and the protruding parts are just inserted into the interior of the mounting frame along the opening, and a threaded hole is also provided on the protruding part of the beam.

[0009] Furthermore, the lifting and adjusting assembly includes an adjusting shaft vertically arranged inside the rectangular pillar, the surface of the adjusting shaft is provided with a thread and is movably assembled with the thread on the crossbeam, the upper and lower ends of the adjusting shaft are respectively movably connected to the rectangular pillar through bearings, and the interior of the base is hollow and provided with a driving motor, the output end of the driving motor is arranged vertically upward and is transmission-connected to one of the adjusting shafts, and a driving gear is also provided at the bottom of the two adjusting shafts, and the two driving gears are connected by a chain transmission.

[0010] Furthermore, there are two slide grooves and they are spaced apart at the center of the base. The bottom of the slider is provided with a protrusion and is inserted into the two slide grooves at the same time. The top surface of the base is also provided with an identification scale for measuring the moving distance of the slider, and the identification scale is arranged near one of the slide grooves.

[0011] Furthermore, the auxiliary positioning component includes an adjustment plate rotatably installed inside the slider, and the top surface of the slider is also provided with a limit groove, a support is slidably installed on the limit groove, a positioning roller is movably installed on the top of the support, and the side wall of the positioning roller is in contact with the outer wall of the pipe.

[0012] Furthermore, the top surface of the adjustment plate is provided with a vortex-shaped groove, and the bottom of the support extends downward and is movably inserted into the groove.

[0013] Furthermore, a worm gear is provided at the bottom of the adjustment plate, and a worm is rotatably installed inside the slider. The worm is arranged on one side of the worm gear and is in mutual transmission engagement with the worm gear. One end of the worm gear extends along the end face of the slider and is provided with an adjustment handle.

[0014] Furthermore, the top of the mounting frame is capped by a transversely arranged connecting plate, and a clamp is detachably installed at the center of the bottom surface of the connecting plate and the center of the top surface of the beam, and a tension sensor and a pressure sensor are respectively provided inside the beam, and the tension sensor and pressure sensor are both externally connected to a computer.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0016] This application is based on the improvement of the existing strength testing equipment, integrating the functions of multiple testing equipment into one. The staff only needs to simply adjust the auxiliary positioning structure at the bottom to perform strength testing on the ductile iron pipe against bending and deformation. The auxiliary positioning structure can also adjust its expanded spacing to test pipes of various specifications and sizes, greatly improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the base and the mounting frame in this embodiment;

[0018] Figure 2 Schematic diagram of the structure of the lifting and adjusting assembly in this embodiment;

[0019] Figure 3 Schematic diagram of the structure of the chute in this embodiment;

[0020] Figure 4 Schematic diagram of the structure of the auxiliary positioning component in this embodiment;

[0021] Figure 5 This is a schematic diagram of the structure of the pipeline anti-bending test in this embodiment;

[0022] Figure 6 This is a structural diagram of the pipeline anti-deformation test in this embodiment;

[0023] Among them: 1. Base; 11. Slide; 12. Slider; 2. Mounting frame; 21. Beam; 22. Opening; 23. Connecting plate; 24. Chuck; 3. Lifting adjustment assembly; 31. Adjusting shaft; 32. Driving gear; 33. Chain; 34. Driving motor; 4. Auxiliary positioning assembly; 41. Support; 42. Adjusting plate; 43. Worm gear; 44. Positioning roller; 45. Adjusting handle; 46. Limiting groove. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0026] Combine Figure 1-6 As shown, a strength testing device for ductile iron pipes includes:

[0027] The base 1 is a rectangular structure used to support the entire device. A slide groove 11 is provided on its top surface, and a slider 12 is installed inside the slide groove 11;

[0028] The mounting frame 2 is vertically arranged on both sides of the top surface of the base 1 and has an opening 22 arranged on the opposite side;

[0029] The crossbeam 21 is horizontally arranged between the mounting frames 2, and its two ends are inserted into the interior of the mounting frames 2 along the direction of the opening 22;

[0030] The lifting and adjusting assembly 3 is provided inside the mounting frame 2 and is used to drive the crossbeam 21 to be lifted and adjusted so as to cooperate with its fixture for mechanical testing;

[0031] The auxiliary positioning component 4 is arranged on the top of the slider 12 and can assist in fixing pipes of various specifications and sizes through an adjustable internal structure.

[0032] Specifically; in this embodiment, the mounting frame 2 is composed of two rectangular pillars vertically arranged on both sides of the top surface of the base 1, and the interior of the rectangular pillar is set to be hollow, and the protruding parts at both ends of the beam 21 just pass through the opening 22 and extend to the hollow part, and a threaded hole is also set through the protruding part of the beam 21.

[0033] The lifting and adjusting component 3 includes an adjusting shaft 31 and a driving motor 34, wherein two adjusting shafts 31 are provided and are vertically arranged inside two rectangular pillars respectively, and the adjusting shaft 31 is also rotatably connected to the inner top surface and inner bottom surface of the rectangular pillar through bearings. The surface of the adjusting shaft 31 is also provided with a thread and is adapted to be installed with the threaded hole on the beam 21, so that the rotation of the adjusting shaft 31 is used to drive the beam 21 to rise and fall.

[0034] In addition, the interior of the base 1 is also set to be hollow, and the bottoms of the two adjustment shafts 31 extend downward into the interior of the base 1, and a driving gear 32 is provided on the side wall. The two driving gears 32 are connected to each other by a chain 33, and the driving motor 34 is arranged inside the base 1, and its output end is vertically upward and connected to the bottom end of one of the adjustment shafts 31.

[0035] The surface of the adjusting shaft 31 should also be properly coated with grease to improve its transmission efficiency. At the same time, a corrugated dust cover is additionally arranged at the opening 22 to isolate external dust.

[0036] The auxiliary positioning assembly 4 includes an adjustment plate 42 arranged inside the slider 12, and two transversely arranged limit grooves 46 are also provided on the surface of the slider 12. Each limit groove 46 is provided with a support 41. A positioning roller 44 is movably installed on the top of the support 41. The surface of the positioning roller 44 is smooth and its side wall fits into the outer wall of the pipe.

[0037] In the above structure, the adjustment plate 42 should be circular and have a vortex-shaped groove on its top surface. The bottom of the support 41 should extend downward along the limiting groove 46 and be inserted into the groove, so that the rotation of the adjustment plate 42 can be used to control the convergence or expansion of the two supports 41.

[0038] At the same time, in order to facilitate the adjustment of the expansion distance of the two supports 41, a worm gear 43 should be provided at the bottom of the adjustment plate 42, and a worm is arranged correspondingly inside the slider 12. The worm is arranged close to one side of the worm gear 43 and engages with the worm gear 43. One end of the worm extends to the end face of the slider 12 and is provided with an adjustment handle 45.

[0039] There should be two slide grooves 11 arranged on the top surface of the base 1 and arranged symmetrically with the center of the base 1. At the same time, there is also an identification scale on the top surface of the base 1 for measuring the distance between the two sliders 12, so as to facilitate the staff to quickly adjust the slider 12 to the corresponding measurement position and improve the accuracy of the measurement data.

[0040] The top and bottom surfaces of crossbeam 21 are both equipped with fixtures. A connection base is located at the center of the bottom surface of crossbeam 21, and a removable pressure block is mounted on the base. This is primarily used to measure the bending and deformation strength of the pipe. Specifically, when measuring bending strength, a pressure block with a curved bottom end should be installed, arranged in a cross pattern with the pipe being tested. When measuring deformation strength, a pressure block with a flat bottom end should be used to ensure a more uniform downward pressure on the pipe.

[0041] Furthermore, based on the aforementioned mechanical testing objectives, the auxiliary positioning assembly 4 should also be adaptively adjusted. When measuring bending strength, the two sliders 12 should first be extended to a specified width. Then, the supports 41 on the sliders 12 should be adjusted so that the two positioning rollers 44 are spread apart a certain distance. The prepared pipe to be tested should then be placed between the two positioning rollers 44, with both ends aligned with the sidewalls of the two positioning rollers 44 while maintaining a gap from the top surface of the sliders 12. The crossbeam 21 should then be controlled to move downward, causing the pressure block to press against the top surface of the pipe until it bends.

[0042] When measuring the anti-deformation strength, the two sliders 12 are brought together to form a flat plate, the supports 41 on the slider 12 are spread out to a larger distance, and then the prepared pipe is placed between the two supports 41. The distance between the supports 41 is adjusted again so that the side walls of the positioning rollers 44 fit against the side walls of the pipe and the bottom surface of the pipe can also fit against the top surface of the slider 12. At this time, the crossbeam 21 is controlled to move downward to squeeze and rupture the pipe.

[0043] In order to facilitate the collection of these measured data, a pressure sensor should also be set inside the beam 21. THLL336 pressure sensor, CY-YB-200 pressure sensor, AXCX series pressure sensor, etc. can be used, and it should be set on the top surface of the connecting seat.

[0044] A clamp 24 should be provided on the top surface of the crossbeam 21, and the top surface of the mounting frame 2 is also blocked by a transversely arranged connecting plate 23, and a clamp 24 is also provided at the center of the bottom surface of the connecting plate 23. The two clamps 24 are used to detect the tensile strength of the pipeline. That is, a section of the pipeline is now cut off for measurement, and then its two ends are respectively fixed with the two clamps 24, and the crossbeam 21 is adjusted to move downward until it is broken, and then the broken section is taken out for measurement, compared with the length of the cut section, and its elongation is calculated.

[0045] At the same time, a tension sensor should be added inside the crossbeam 21. The FC-S88 tension sensor, PBCL-05 tension sensor, etc. can be used, and it should be arranged near the top clamp 24.

[0046] Both the pressure sensor and the tension sensor should be connected to the computer with wires so that the staff can use the test software to print the test data into a line graph for observation and analysis, which will facilitate subsequent staff to further optimize the ductile iron pipe material.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A strength testing device for ductile iron pipes, characterized in that: The utility model comprises a base (1), a mounting frame (2) is vertically provided on the top surface of the base (1), a crossbeam (21) is horizontally arranged between the mounting frames (2), and the two ends of the crossbeam (21) respectively extend to the inside of the two side walls of the mounting frame (2), a lifting adjustment component (3) is also provided inside the mounting frame (2) and is threadedly assembled with the end of the crossbeam (21), a connecting seat is also provided at the bottom of the crossbeam (21), and a pressure block is provided at the center of the bottom surface of the connecting seat; a slide groove (11) is also provided on the top surface of the base (1), two sliders (12) are provided on the slide groove (11), and each slider (12) is provided with a group of auxiliary positioning components (4), and the auxiliary positioning components (4) are arranged in contact with the side wall of the pipeline.

2. The strength testing device for ductile iron pipes according to claim 1, characterized in that: The mounting frame (2) is a rectangular support vertically arranged at both ends of the top surface of the base (1), and the interior of the mounting frame (2) is hollow and has an opening (22) on the opposite side. The two ends of the crossbeam (21) extend outward and the protruding portion thereof is inserted into the interior of the mounting frame (2) along the opening (22), and a threaded hole is also provided on the protruding portion of the crossbeam (21).

3. The strength testing device for ductile iron pipes according to claim 2, characterized in that: The lifting and adjusting assembly (3) includes an adjusting shaft (31) vertically arranged inside a rectangular pillar, a surface of the adjusting shaft (31) is provided with a thread and is movably assembled with the thread on the crossbeam (21), and the upper and lower ends of the adjusting shaft (31) are movably connected to the rectangular pillar through bearings, and the interior of the base (1) is hollow and provided with a driving motor (34), the output end of the driving motor (34) is arranged vertically upward and is transmission-connected to one of the adjusting shafts (31), and the bottoms of the two adjusting shafts (31) are further provided with driving gears (32), and the two driving gears (32) are transmission-connected through a chain (33).

4. The strength testing device for ductile iron pipes according to claim 1, characterized in that: The slide grooves (11) are provided with two and are spaced apart at the center of the base (1). The bottom of the slider (12) is provided with a protrusion and is inserted into the two slide grooves (11) at the same time. The top surface of the base (1) is also provided with a marking scale for measuring the moving distance of the slider (12), and the marking scale is arranged near one of the slide grooves (11).

5. The strength testing device for ductile iron pipes according to claim 1, characterized in that: The auxiliary positioning assembly (4) includes an adjustment plate (42) rotatably mounted inside the slider (12), and a limiting groove (46) is further provided on the top surface of the slider (12). A support (41) is slidably mounted on the limiting groove (46), and a positioning roller (44) is movably mounted on the top of the support (41), and the side wall of the positioning roller (44) is in contact with the outer wall of the pipe.

6. The strength testing device for ductile iron pipes according to claim 5, characterized in that: The top surface of the adjustment plate (42) is also provided with a vortex-shaped groove, and the bottom of the support (41) extends downward and is movably inserted into the groove.

7. The strength testing device for ductile iron pipes according to claim 6, characterized in that: A worm gear (43) is also provided at the bottom of the adjustment plate (42), and a worm is rotatably installed inside the slider (12). The worm is arranged on one side of the worm gear (43) and is in mutual transmission engagement with the worm gear (43). One end of the worm is extended to the end surface of the slider (12) and is provided with an adjustment handle (45).

8. The strength testing device for ductile iron pipes according to claim 1, characterized in that: The top of the mounting frame (2) is capped by a transversely arranged connecting plate (23), and a clamp (24) is detachably mounted at the center of the bottom surface of the connecting plate (23) and the center of the top surface of the crossbeam (21), and a tension sensor and a pressure sensor are respectively provided inside the crossbeam (21), and the tension sensor and the pressure sensor are both externally connected to a computer.

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