A pipeline toughness detection device

Abstract

The application discloses a pipeline toughness detection equipment and belongs to the technical field of pipeline detection. The pipeline toughness detection equipment comprises a fixing box, a control box is installed on the side surface of the fixing box, the control box is electrically connected with an electromagnet, the electromagnet is attached to the lower end surface of a mounting plate, the mounting plate is arranged on the inner side of a support frame, the two ends of the mounting plate and the inner wall of the support frame are slidably connected, a screw rod is screwed through the inside of the mounting plate and is arranged below the electromagnet, a supporting block is movably arranged in the fixing box, a supporting mechanism is arranged on the side of the supporting block, and a negative pressure adsorption mechanism is arranged below the supporting block. When the pipeline toughness detection equipment is used for impact test on a pipeline, the detection hammer can be supported after bouncing up, so that the deviation of the detection result caused by the secondary impact on the pipeline is prevented, and the form of the contact surface between the detection hammer and the pipeline can be changed during the impact test, so that the comprehensiveness of the detection is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline detection, in particular to a pipeline toughness detection equipment. BACKGROUND

[0002] The pipeline needs to detect its toughness during production, and the plastic pipeline toughness detection equipment is a key tool for evaluating the deformation capacity and damage resistance of the pipe under mechanical loads such as bending, stretching and compression, and is widely used in fields such as construction, transportation and chemical industry. At present, the common toughness detection methods include bending or stretching detection, static hydraulic pressure detection and drop hammer detection, etc. For example, a cast pipe toughness detection device with publication number CN208140464U includes a rack and a toughness detection machine, the toughness detection machine is mainly composed of a machine head, a detection head, a top head and a wire winding chain, the detection head is fixed to the front end of the machine head, the top head is located below the detection head, the machine head is provided with a mounting plate for mounting the top head, a gas cylinder A is arranged below the top head to drive the top head to move upward, and a gas cylinder B is arranged at the rear end of the machine head to drive the machine head to move horizontally. Compared with the prior art, the equipment for detecting the toughness of the cast iron pipe is designed to quickly find out unqualified products and improve the product quality of the cast iron pipe.

[0003] For example, a PE pipeline toughness detection device for PE pipeline processing with publication number CN216208043U relates to the technical field of PE pipeline. The PE pipeline toughness detection device for PE pipeline processing includes a workbench, a detection frame is arranged above the workbench, a detection wheel is hingedly connected to the bottom surface of the detection frame, a support plate is arranged above the detection frame, two spring telescopic rods are fixedly connected to the bottom surface of the support plate, the lower ends of the spring telescopic rods are fixedly connected to the upper surface of the detection frame, a detection table is fixedly connected to the upper surface of the workbench, an inclined plate is fixedly connected to the right side of the detection table on the upper surface of the workbench, and a pushing block is arranged on the front and rear sides of the workbench. The PE pipeline toughness detection device for PE pipeline processing changes the pressure received by the pipeline between the detection wheel and the detection table by arranging the pushing block, the inclined plate and the detection table, solves the problem that the existing toughness detection device is not convenient to adjust the detection force and cannot detect different types of pipelines. However, the above-mentioned toughness detection device still has the following shortcomings in actual use:

[0004] 1. The traditional toughness detection equipment will produce a secondary impact on the pipeline after the impact between the detection hammer and the pipeline, which will cause a deviation in the detection result, and lacks a structure to prevent secondary impact after the drop hammer.

[0005] 2. And when the pipeline is subjected to impact test, the contact surface between the detection hammer and the pipeline is mostly flat structure, which is inconvenient to adjust the form of the contact surface between the detection hammer and the pipeline to realize diversified detection, so the detection result is not comprehensive.

[0006] In view of the above problems, it is urgent to make innovative design on the basis of the original toughness detection equipment. SUMMARY

[0007] The toughness detection equipment for the pipeline is provided to solve the problems that the traditional toughness detection equipment will produce secondary impact on the pipeline after the drop hammer test, and it is inconvenient to adjust the form of the contact surface between the detection hammer and the pipeline to realize diversified detection.

[0008] To achieve the above purpose, the present application provides the following technical scheme: a toughness detection equipment for pipeline, comprising a fixed box, a control box is installed on the side of the fixed box, and the control box is electrically connected with an electromagnet, the electromagnet is attached to the lower end surface of the mounting plate, and the mounting plate is arranged on the inner side of the support frame, the two ends of the mounting plate and the inner wall of the support frame are slidingly connected, and the support frame is fixed above the fixed box, a screw rod is threaded through the inside of the mounting plate, the top of the screw rod is connected with the output shaft of the motor, and the motor is installed below the electromagnet;

[0009] A supporting block is movably arranged in the inside of the fixed box, a supporting mechanism is arranged on the side of the supporting block, and the supporting mechanism is used for supporting the falling detection hammer to prevent secondary impact on the pipeline, a negative pressure adsorption mechanism is arranged below the supporting block, and the negative pressure adsorption mechanism is used for limiting the detection pipeline.

[0010] Preferably, a movable frame is rotatably arranged on the outside of the detection hammer, the top of the movable frame is magnetically adsorbed below the electromagnet, and a locking rod is rotatably sleeved on the outside of the rotating shaft of the detection hammer and the movable frame, and the locking rod is arranged to adjust the angle between the detection hammer and the movable frame.

[0011] Preferably, the locking rod, the movable frame and the detection hammer are rotatably connected, first and second detection blocks are respectively fixed on the two sides of the detection hammer, the cross section of the first detection block is isosceles triangular structure, and the cross section of the second detection block is semicircular structure, and the first and second detection blocks are arranged to realize detection of different forms of the pipeline.

[0012] Preferably, the detection hammer is hollow, an adjusting rod is rotatably arranged in the inside of the detection hammer, and a counterweight is threadedly sleeved on the outside of the adjusting rod, and the counterweights are arranged at equal intervals, and the number of the counterweights is adjusted to change the weight of the detection hammer.

[0013] Preferably, the supporting mechanism comprises a support plate fixed to the top surface of the fixed box, the support plate is in a U-shaped structure, both sides of the support plate are slidingly penetrated through limiting plates, and the ends of the two limiting plates away from each other and the end of the movable plate are fixedly connected, the highest point of the limiting plate is higher than the highest point of the pipeline after being placed, and the maximum distance between the two limiting plates is greater than the length of the detection hammer.

[0014] Preferably, the movable plate penetrates the lower end of the support plate, the movable plate and the support plate are elastically and slidably connected, the other end of the movable plate is in abutting contact with the side surface of the supporting block, and both sides of the supporting block are in a slope structure, so that the supporting block can drive the movable plate to slide on the support plate when the supporting block descends.

[0015] Preferably, the upper surface of the supporting block is concave, limiting grooves are formed in the upper ends of both sides of the supporting block, and the limiting grooves and the edges of the movable plate are in clamping connection, the concave part of the supporting block is used for placing the pipeline, and the limiting grooves can temporarily limit the movable plate.

[0016] Preferably, the negative pressure suction mechanism comprises a connecting rod fixed to the bottom of the supporting block, the connecting rod and the support plate are elastically and slidably connected, the lower end surface of the support plate is fixed with a fixed cylinder, and the bottom of the connecting rod is connected with a piston block, so that the piston block is driven to slide in the fixed cylinder through the connecting rod when the supporting block descends.

[0017] Preferably, the edges of the piston block slide in abutting contact with the inner wall of the fixed cylinder, the upper end of the fixed cylinder is in communication with the gas conveying hose and the gas conveying channel, the gas conveying channel is arranged in the supporting block, and the upper part of the piston block is in a negative pressure state after the piston block descends.

[0018] Preferably, the gas conveying channel and the fixed cavity are in communication, the fixed cavity is arranged in the supporting block, and the concave part at the top of the supporting block is reserved with negative pressure holes at equal intervals, so that the gas between the pipeline and the supporting block is extracted through the negative pressure holes, the fixed cavity, the gas conveying channel and the gas conveying hose, and the pipeline is limited.

[0019] Compared with the prior art, the pipeline toughness detection equipment can support the detection hammer after the detection hammer falls and rebounds during the impact test of the pipeline, prevent the detection result from deviating due to secondary impact on the pipeline, and change the shape of the contact surface between the detection hammer and the pipeline during the impact test, thereby improving the comprehensiveness of the detection.

[0020] 1. The detection hammer is rotated by 90 degrees on the movable frame, so as to drive the first detection block or the second detection block downward, so that the detection hammer can contact the pipeline through a plane, a curved surface and a sharp end, different shape detection is realized, the number of the weight blocks in the detection hammer is adjusted through the threaded transmission between the rotating adjusting rod and the weight blocks, and the weight is adjusted, so as to meet the detection requirements of different needs.

[0021] 2. The pressing pipe drives the supporting block to descend through the inclined surface and contacts the edge of the movable plate, pushes the two movable plates and the two limiting plates away from each other, temporarily limits the movable plate through the limiting groove, drives the movable plate and the limiting groove to separate through the vibration force generated when the detection hammer falls, drives the supporting block to rise, and the two limiting plates also approach each other, and the detection hammer rises a distance upward due to the elastic force after falling, and falls on the limiting plate after the second time, supported by the limiting plate, avoiding the phenomenon of inaccurate detection caused by the second impact on the pipe;

[0022] 3. When the supporting block descends, the connecting rod drives the piston block to slide in the fixed cylinder, so that the upper end of the piston block is in a negative pressure state, air between the pipe and the supporting block can be sucked into the fixed cavity through the negative pressure hole, then transmitted to the upper end of the fixed cylinder, and then the stability of the pipe after placement is ensured by the negative pressure adsorption mode. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 It is a schematic diagram of the sectional structure of the fixed box of the present application;

[0025] Figure 3 It is a schematic diagram of the sectional structure of the supporting block of the present application;

[0026] Figure 4 It is a schematic diagram of the structure of the supporting block of the present application;

[0027] Figure 5 It is a schematic diagram of the structure of the supporting block after descending of the present application;

[0028] Figure 6 It is a schematic diagram of the structure of the detection hammer of the present application;

[0029] Figure 7 It is a schematic diagram of the structure of the detection block of the present application;

[0030] Figure 8 It is a schematic diagram of the sectional structure of the detection hammer of the present application;

[0031] Figure 9 It is a schematic diagram of the sectional structure of the locking rod of the present application.

[0032] In the figure: 1, fixed box; 2, control box; 3, mounting plate; 4, motor; 5, support frame; 6, electromagnet; 7, detection hammer; 8, movable frame; 9, locking rod; 10, first detection block; 11, second detection block; 12, adjusting rod; 13, counterweight; 14, support plate; 15, limiting plate; 16, movable plate; 17, bearing block; 18, limiting groove; 19, connecting rod; 20, piston block; 21, fixed cylinder; 22, gas delivery hose; 23, gas delivery channel; 24, fixed cavity; 25, negative pressure hole. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Please refer to Figures 1-9 The present application provides the following technical solutions:

[0035] Embodiment 1: In order to solve the problems existing in the prior art, therefore, the present embodiment provides a pipeline toughness detection device, which comprises a fixed box 1, a control box 2 is installed on the side surface of the fixed box 1, and the control box 2 is electrically connected with an electromagnet 6, the electromagnet 6 is attached to the lower end surface of a mounting plate 3, and the mounting plate 3 is arranged inside a support frame 5, the two ends of the mounting plate 3 and the inner wall of the support frame 5 are slidingly connected, and the support frame 5 is fixed above the fixed box 1, a lead screw is threaded through the inside of the mounting plate 3, the top of the lead screw is connected with the output shaft of a motor 4, and the motor 4 is installed on the top of the support frame 5; further comprising: a detection hammer 7 installed below the electromagnet 6; a bearing block 17 movably arranged inside the fixed box 1, the side of the bearing block 17 is provided with a bearing mechanism, and the bearing mechanism is used for bearing the falling detection hammer 7 to prevent secondary impact on the pipeline, a negative pressure suction mechanism is arranged below the bearing block 17, and the negative pressure suction mechanism is used for limiting the detection pipeline; first, place the pipeline sample to be detected on the bearing block 17 for limiting, then drive the mounting plate 3 to rise by the motor 4, rise to the corresponding height according to the detection requirement, then the electromagnet 6 is de-energized to release the suction of the movable frame 8, the detection hammer 7 falls by gravity to impact the pipeline, realizing toughness detection, after the detection is completed, the mounting plate 3 is lowered, the electromagnet 6 is re-energized to suction the movable frame 8, and after rising, the next detection is facilitated.

[0036] When the existing toughness detection device performs impact test on the pipeline, the contact surface between the detection hammer 7 and the pipeline is mostly a plane structure, which is not convenient for adjusting the shape of the contact surface between the detection hammer 7 and the pipeline to realize diversified detection, so the detection result is not comprehensive.Figures 6-9 As shown, the outer side rotation of the detection hammer 7 is provided with a movable frame 8, and the top of the movable frame 8 is magnetically adsorbed below the electromagnet 6, and the rotation shaft of the detection hammer 7 and the movable frame 8 is provided with a locking rod 9 outside; the locking rod 9 is rotatably connected with the movable frame 8 and the detection hammer 7, and the two sides of the detection hammer 7 are respectively fixed with a first detection block 10 and a second detection block 11, the cross section of the first detection block 10 is an isosceles triangular structure, and the cross section of the second detection block 11 is a semicircular structure; the detection hammer 7 is hollow, and an adjusting rod 12 penetrates the inside of the detection hammer 7, and the outside of the adjusting rod 12 is provided with a counterweight 13 in a threaded sleeve, and the counterweight 13 is distributed at equal intervals; when the detection hammer 7 detects, it can be contacted with the pipeline through its plane, or the shape of the contact surface is adjusted, the locking rod 9 is rotated to separate it from the detection hammer 7, so that the detection hammer 7 can be rotated on the movable frame 8, and after rotating 90° clockwise, the second detection block 11 is downward, so that the arc surface can be contacted with the detected pipeline, and when rotating 90° counterclockwise, the first detection block 10 is downward, so that the tip can be contacted with the pipeline, realizing the detection of different shapes, improving the comprehensiveness of the detection, and after adjusting, the locking rod 9 is connected with the detection hammer 7, so that the adjusted angle thereof can be fixed, when the weight of the detection hammer 7 needs to be adjusted, the adjusting rod 12 is rotated to drive the counterweight 13 to move through the threaded transmission with the counterweight 13, and the weight can be adjusted by adjusting the number of counterweights 13 in the detection hammer 7, meeting the detection of different requirements.

[0037] Example 2: After the existing toughness detection equipment performs the drop hammer test, the detection hammer 7 will bounce after the impact between the detection hammer 7 and the pipeline, thus causing secondary impact on the pipeline, which is easy to cause deviation of the detection result, and lacks a structure for preventing secondary impact after the drop hammer, therefore, the technical scheme is as follows, Figures 2-3 and Figure 5As shown, the supporting mechanism comprises a support plate 14 fixed to the top surface of the fixed box 1, the support plate 14 is in a "U" shape structure, and the two sides of the support plate 14 are slidingly penetrated through the limiting plates 15, and the ends of the two limiting plates 15 away from each other and the end of the movable plate 16 are fixedly connected, at the same time, the highest point of the limiting plate 15 is higher than the highest point of the pipeline after being placed, and the maximum distance between the two limiting plates 15 is greater than the length of the detection hammer 7; the movable plate 16 penetrates the lower end of the support plate 14, and the movable plate 16 and the support plate 14 are elastically and slidingly connected, and the other end of the movable plate 16 and the side surface of the supporting block 17 are in close contact, and the two sides of the supporting block 17 are in a slope structure; the upper surface of the supporting block 17 is concave, and the upper end of the two sides of the supporting block 17 is provided with a limiting groove 18, and the edge of the limiting groove 18 and the movable plate 16 is snap-connected; after placing the pipeline sample to be detected on the supporting block 17, the supporting block 17 is lowered by pressing the pipeline, and when the supporting block 17 is lowered, the edges of the two sides of the supporting block 17 are in contact with the edges of the movable plate 16, which can push the two movable plates 16 away from each other and slide on the support plate 14, and after sliding, the edges of the movable plates 16 can be clamped in the limiting grooves 18 for temporary limiting, at the same time, the two limiting plates 15 are driven away from each other, so that the distance between the two limiting plates 15 is greater than the length of the detection hammer 7, so that the detection hammer 7 will not contact the limiting plate 15 during the falling process, and when the detection hammer 7 falls for detection, a large vibration will be generated, and the vibration force will drive the movable plate 16 and the limiting groove 18 to separate, and the supporting block 17 is lifted by the resilience of the spring, and the movable plate 16 is no longer pushed away, and the two limiting plates 15 are also close to each other, and the distance is less than the length of the detection hammer 7, and the detection hammer 7 is lifted a distance upward due to the elastic force after falling, and falls on the limiting plate 15 after falling again, which is supported by the limiting plate 15, avoiding the secondary impact on the pipeline to cause inaccurate detection.

[0038] Embodiment 3: The existing toughness detection equipment is not convenient for pipeline limiting, and needs additional fixing structure, which is easy to cause shielding to the pipeline and affect detection, therefore, the following technical scheme is adopted in the embodiment, like Figures 3-5As shown, the negative pressure adsorption mechanism comprises a connecting rod 19 fixed at the bottom of the supporting block 17, the connecting rod 19 and the supporting plate 14 are elastically and slidably connected, the lower end surface of the supporting plate 14 is fixed with a fixing cylinder 21, and the bottom of the connecting rod 19 is connected with a piston block 20; the edge of the piston block 20 is slidably combined with the inner wall of the fixing cylinder 21, the upper end of the fixing cylinder 21 is communicated with a gas conveying hose 22 and a gas conveying channel 23, the gas conveying channel 23 is arranged in the supporting block 17; the gas conveying channel 23 is communicated with a fixing cavity 24, the fixing cavity 24 is arranged in the supporting block 17, and the recess at the top of the supporting block 17 is equidistantly reserved with negative pressure holes 25; when the supporting block 17 is lowered to drive the connecting rod 19 to slide on the supporting plate 14, the piston block 20 is further driven to slide in the fixing cylinder 21, so that the upper end of the piston block 20 is in a negative pressure state, air between the pipeline and the supporting block 17 can be sucked into the fixing cavity 24 through the negative pressure holes 25, then transmitted to the upper end of the fixing cylinder 21 through the gas conveying channel 23 and the gas conveying hose 22, and the stability of the pipeline after being placed is ensured through the negative pressure adsorption.

[0039] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pipe toughness testing device, comprising a fixed box (1), a control box (2) installed on the side of the fixed box (1), and the control box (2) being electrically connected to an electromagnet (6), the electromagnet (6) being fitted to the lower end face of a mounting plate (3), the mounting plate (3) being disposed on the inner side of a support frame (5), the two ends of the mounting plate (3) being slidably connected to the inner wall of the support frame (5), and the support frame (5) being fixed above the fixed box (1), the internal thread of the mounting plate (3) having a lead screw passing through it, and the top of the lead screw being connected to the output shaft of a motor (4), and the motor (4) being mounted on the top of the support frame (5); Its features are, Also includes: The detection hammer (7) is installed below the electromagnet (6); The support block (17) is movably installed inside the fixed box (1). The support block (17) is provided with a support mechanism on its side, and the support mechanism is used to support the falling detection hammer (7) to prevent secondary impact on the pipeline. The support block (17) is provided with a negative pressure adsorption mechanism below it, and the negative pressure adsorption mechanism is used to limit the detection pipeline. The supporting mechanism includes a support plate (14) fixed to the top surface of the fixed box (1). The support plate (14) has a "U" shaped structure, and both sides of the support plate (14) slide through limit plates (15). The ends of the two limit plates (15) that are far apart from each other are fixedly connected to one end of the movable plate (16). At the same time, the highest point of the limit plate (15) is higher than the highest point after the pipe is placed. The maximum distance between the two limit plates (15) is greater than the length of the detection hammer (7). The movable plate (16) passes through the lower end of the support plate (14), and the movable plate (16) and the support plate (14) are elastically slidably connected. The other end of the movable plate (16) is in close contact with the side of the support block (17), and both sides of the support block (17) are inclined structures.

2. The pipeline toughness testing equipment according to claim 1, characterized in that: The outer side of the detection hammer (7) is rotatably provided with a movable frame (8), and the top of the movable frame (8) is magnetically attracted to the bottom of the electromagnet (6). A locking rod (9) is rotatably sleeved on the outer side of the rotating shaft of the detection hammer (7) and the movable frame (8).

3. The pipeline toughness testing equipment according to claim 2, characterized in that: The locking rod (9) is rotatably connected to the movable frame (8) and the detection hammer (7), and the first detection block (10) and the second detection block (11) are fixed on both sides of the detection hammer (7). The cross section of the first detection block (10) is an isosceles triangle structure, and the cross section of the second detection block (11) is a semi-circular structure.

4. The pipeline toughness testing equipment according to claim 3, characterized in that: The detection hammer (7) is hollow, and the internal rotation of the detection hammer (7) is traversed by an adjusting rod (12), and a counterweight (13) is threaded on the outer side of the adjusting rod (12), and the counterweight (13) is evenly distributed.

5. The pipeline toughness testing equipment according to claim 1, characterized in that: The upper surface of the support block (17) is recessed, and the upper ends of both sides of the support block (17) are provided with limiting grooves (18), and the limiting grooves (18) and the edges of the movable plate (16) are engaged.

6. The pipeline toughness testing equipment according to claim 5, characterized in that: The negative pressure adsorption mechanism includes a connecting rod (19) fixed to the bottom of the support block (17), and the connecting rod (19) and the support plate (14) are elastically slidably connected. The lower end face of the support plate (14) is fixed with a fixing cylinder (21), and the bottom of the connecting rod (19) is connected with a piston block (20).

7. The pipeline toughness testing equipment according to claim 6, characterized in that: The piston block (20) slides against the inner wall of the fixed cylinder (21) at its edge, and the upper end of the fixed cylinder (21) is connected to the gas delivery hose (22) and the gas delivery channel (23) through which the gas delivery channel (23) is located in the support block (17).

8. The pipeline toughness testing equipment according to claim 7, characterized in that: The gas delivery channel (23) is connected to the fixed cavity (24), and the fixed cavity (24) is located inside the support block (17). Negative pressure holes (25) are reserved at equal intervals in the recess at the top of the support block (17).

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