CN115752995B - Tee joint pipe fitting strength detection equipment and method - Google Patents
Tee joint pipe fitting strength detection equipment and method Download PDFInfo
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- CN115752995B CN115752995B CN202211495104.5A CN202211495104A CN115752995B CN 115752995 B CN115752995 B CN 115752995B CN 202211495104 A CN202211495104 A CN 202211495104A CN 115752995 B CN115752995 B CN 115752995B
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Abstract
The invention relates to the technical field of pipe fitting quality detection, and particularly provides a three-way pipe fitting strength detection device and a three-way pipe fitting strength detection method, wherein the three-way pipe fitting strength detection device comprises a detection workbench, a clamping groove positioning device is fixedly arranged at the bottom end of a table top of the detection workbench, and a main pipe orifice positioning device, a branch pipe orifice positioning device and a collision force application device are fixedly arranged on the table top of the detection workbench; the device provided by the invention reduces the influence of variable factors on the intensity detection test accuracy in a batch detection mode, so that a more real intensity detection average intensity value can be obtained; in addition, the stability of the test fixation of the tee pipe fitting is enhanced, and the accuracy and the authenticity of the strength detection value are greatly improved.
Description
Technical Field
The invention relates to the technical field of pipe quality detection, and particularly provides a three-way pipe strength detection device and method.
Background
The three-way pipe fitting is a communicating pipe fitting for communicating a pipeline at a position where a branch pipe is required to be separated from a main pipeline in a pipeline system, and can be divided into different three-way pipe fittings according to pipe diameter, installation butt joint form, branch pipe distribution form, material and other classification forms, wherein the three-way pipe fitting can be divided into a normal three-way pipe and an inclined three-way pipe according to the branch pipe distribution form, and can be divided into a stainless steel three-way pipe, a carbon steel three-way pipe, a copper three-way pipe, a plastic three-way pipe, a nodular cast iron three-way pipe and the like according to the material; the invention provides a three-way pipe fitting strength detection device and a three-way pipe fitting strength detection method, which are mainly used for detecting a ductile cast iron positive three-way pipe fitting, wherein the ductile cast iron positive three-way pipe fitting is a three-way pipe fitting which is made of ductile cast iron and is formed in a casting mode, and a branch pipe is vertical to a main pipe.
On one hand, the ductile iron three-way pipe fitting is made of ductile iron, the hardness of the material is high, but the brittleness is high, on the other hand, the casting process is adopted for processing and forming, the density of the forming material is lower than that of common steel and iron, the uneven shrinkage of the casting in the cooling and solidification process directly causes uneven density distribution of the ductile iron three-way pipe fitting, and the integral strength of the ductile iron three-way pipe fitting is finally and directly influenced by the factors. In the practical application process, the nodular cast iron tee pipe fitting can be arranged in various complex environments along with the pipeline system, so that the pipeline system is prevented from being damaged and broken at the joint of the tee pipe fitting due to the fact that the nodular cast iron tee pipe fitting is used in the pipeline system which does not meet the strength requirement, and strength detection is needed to be carried out on the nodular cast iron tee so as to determine the reliable strength range of the tee pipe fitting.
Under the existing strength detection, generally, impact equipment is adopted to carry out independent strength detection on a single three-way pipe fitting, and in the detection process, the following problems generally exist:
1) When the independent detection is carried out, the quality of the three-way pipe fitting selected for detection has randomness, namely the variable factor cannot be better controlled when the three-way pipe fitting is subjected to each impact detection operation, so that the finally measured intensity detection data has a certain proportion of randomness and contingency.
2) When intensity detection is carried out on the three-way pipe fitting, the three-way pipe fitting is not reliably and stably fixed, impact detection is carried out on the premise of unreliable fixation, real intensity detection data cannot be reflected to the greatest extent, and the actual detection data is larger.
Disclosure of Invention
In order to solve the above problems, the present invention provides a three-way pipe strength detecting device and method for solving the above problems in the prior art.
In order to achieve the above purpose, the present invention is implemented by adopting the following technical scheme: the strength detection equipment for the three-way pipe fitting comprises a detection workbench, wherein a clamping groove positioning device is fixedly arranged at the bottom end of a table top of the detection workbench, and a main pipe orifice positioning device, a branch pipe orifice positioning device and a collision force application device are fixedly arranged on the table top of the detection workbench; wherein:
the clamping groove positioning device comprises a plurality of clamping groove positioning blocks which are vertically arranged in a lifting manner and can penetrate through the table top of the detection workbench, the clamping groove positioning blocks are uniformly distributed along the horizontal straight line direction, and when the plurality of three-way pipe fittings are placed in the plurality of clamping groove positioning blocks in a one-to-one correspondence manner, main pipe openings of the plurality of three-way pipe fittings are axially overlapped; the main pipe port positioning device comprises a plurality of opposite inserting positioning tables which are distributed along the straight line distribution direction of the clamping groove positioning blocks and are uniformly and alternately distributed with the clamping groove positioning blocks, the opposite inserting positioning tables are distributed on two sides of each clamping groove positioning block, two main pipe inserting rods which are driven in reverse synchronization are symmetrically arranged on each opposite inserting positioning table, and the symmetrical direction of the two main pipe inserting rods is along the distribution direction of the opposite inserting positioning tables; the main pipe port positioning device further comprises an advance and retreat driving mechanism for synchronously driving the plurality of opposite inserting positioning tables and enabling two main pipe inserting rods in each opposite inserting positioning table to synchronously move in directions; the branch pipe port positioning device comprises a plurality of branch pipe inserting rods which are driven to vertically lift and vertically oppositely arranged in one-to-one correspondence with the clamping groove positioning blocks; the collision force application device comprises a plurality of collision sliding rail vehicles, the number of the collision sliding rail vehicles is larger than that of the clamping groove positioning blocks, the collision force digital display devices are fixedly installed on the detection workbench, one of the collision sliding rail vehicles is correspondingly arranged with the collision force digital display devices, and the rest of the collision sliding rail vehicles are correspondingly arranged with the clamping groove positioning blocks one by one.
Preferably, the collision force application device further comprises a fixed bracket fixed on the detection workbench, a plurality of sliding rails fixed on the fixed bracket and a traction lifting mechanism assembled on the fixed bracket and used for synchronously traction and lifting all the collision sliding rail vehicles; the plurality of collision sliding rail vehicles are correspondingly and slidably arranged on the plurality of sliding rails, the sliding rails are sequentially divided into a vertical section, an arc section and a horizontal end from top to bottom, and the horizontal section is nearest to a clamping groove positioning block at a corresponding position; the plurality of collision sliding rail vehicles are fixedly connected to the traction ends of the traction lifting mechanisms.
Preferably, an impact hammer is horizontally and slidably mounted on one side, facing the clamping groove positioning block, of the impact rail vehicle, a damping spring is sleeved on the impact hammer, and two ends of the damping spring are respectively fixed on the impact hammer and the impact rail vehicle.
Preferably, the traction lifting mechanism comprises a winding motor fixed at the side end of the fixed support and a winding shaft horizontally rotatably mounted on the fixed support, the axial direction of the winding shaft is along the distribution direction of the sliding rails, and one side shaft end is fixed on an output shaft of the winding motor; the vertical section of slide rail is gone up and is close to the both sides symmetry of top and is provided with the pulley of horizontal rotation installation, collide the slide rail car and be located the both sides symmetry that is perpendicular to slip direction and be provided with the tractive pole, the tractive pole with fixedly connected with between the reel draws the rope, the stay rope is walked around with it is connected the pulley of tractive pole homonymy.
Preferably, the opposite-inserting positioning table further comprises a rotation support and a bidirectional screw rod horizontally rotatably mounted on the rotation support, wherein a plurality of guide rods are horizontally and fixedly mounted on two sides of the rotation support in the axial direction of the bidirectional screw rod, a travel plate is jointly and horizontally slidably mounted on the plurality of guide rods on the same side, the bidirectional screw rod penetrates through the travel plate, and two main pipe inserting rods are detachably mounted on the outer end surfaces of the two travel plates in a one-to-one correspondence manner and are in threaded connection with two thread sections of the bidirectional screw rod in a one-to-one correspondence manner; the driving and reversing mechanism is used for driving the bidirectional screw rod to rotate.
Preferably, the clamping groove positioning blocks are provided with V-shaped positioning grooves in an extending mode between two opposite side positions in the distribution direction of the clamping groove positioning blocks, the clamping groove positioning blocks are provided with clearance grooves in two other opposite side positions in an extending mode, and the V-shaped positioning grooves and the clearance grooves are arranged in an interpenetration mode.
Preferably, the branch pipe inserting rod is detachably installed, and the connecting end of the branch pipe inserting rod is a pressure plate capable of pressing the connecting port end of the branch pipe of the three-way pipe fitting.
Preferably, the main pipe inserting rod and the branch pipe inserting rod are cylindrical, and the cylindrical side surfaces of the main pipe inserting rod and the cylindrical side surfaces of the branch pipe inserting rod are wrapped with rubber layers.
In addition, the invention also provides a method for detecting the strength of the three-way pipe fitting, which comprises the following steps:
s1, sequentially placing a plurality of randomly selected three-way pipe fittings in a plurality of clamping groove positioning blocks, and enabling the central shaft of a main pipe port of the three-way pipe fitting to be overlapped and aligned with the central shafts of main pipe inserting rods on two sides through height adjustment of the clamping groove positioning devices.
S2, inserting the branch pipe inserting rod into a branch pipe connecting end port of the three-way pipe fitting through the branch pipe port positioning device, and enabling the three-way pipe fitting to be clamped between the pressure plate and the clamping groove positioning block.
S3, inserting the main pipe inserting rod into a main pipe connecting end port of the three-way pipe fitting through the main pipe port positioning device.
S4, sequentially lifting the heights of the collision sliding rail vehicles according to the sequence from low to high through the traction lifting mechanism, carrying out collision detection on the three-way pipe fittings at different heights, and recording collision force data detected when one of the three-way pipe fittings is damaged and broken.
S5, carrying out repeated intensity detection tests in batches, and taking the average value of the repeated collision intensity detection as the intensity value of the three-way pipe fitting of the detected model.
The technical scheme has the following advantages or beneficial effects: 1. the invention provides a three-way pipe fitting strength detection device which is provided with a plurality of strength detection stations, can perform batch strength detection on three-way pipe fittings in the same batch, reduces the influence of variable factors on strength detection test accuracy, and can obtain a more real strength detection average strength value.
2. The invention provides a three-way pipe fitting strength detection device, which can be used for placing and positioning a three-way pipe fitting through a clamping groove positioning device, and can be matched with a branch pipe port positioning device to finish clamping, positioning and fixing of the three-way pipe fitting; in addition, branch pipe inserted bars insert three-way pipe fitting branch pipe mouth, and two are responsible for the inserted bars one-to-one and insert two mouths of being responsible for of three-way pipe fitting, all be connected with the pipeline and formed the connection internal stay in three mouth of pipe departments of three-way pipe fitting under the actual pipeline connected state to more do benefit to the intensity detection data under the reaction actual pipeline connected state, in conclusion, through reinforcing three-way pipe fitting test fixed stability, improved the accuracy and the authenticity of intensity detection numerical value greatly.
Drawings
The invention and its features, aspects and advantages will become more apparent from the detailed description of non-limiting embodiments with reference to the following drawings. Like numbers refer to like parts throughout the several views, and are not intended to scale, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic perspective view of a three-way pipe strength detecting device according to the present invention under a first view angle.
Fig. 2 is a schematic perspective view of a three-way pipe strength detecting device according to the present invention under a second view angle.
Fig. 3 is a schematic perspective view of a three-way pipe strength detecting device according to the present invention under a third view angle.
Fig. 4 is an enlarged partial schematic view of fig. 1 a.
Fig. 5 is a partially enlarged schematic view of fig. 2B.
Fig. 6 is a top view of the strength detection device for the tee joint pipe fitting.
Fig. 7 is a cross-sectional view of C-C of fig. 6.
Fig. 8 is a cross-sectional view of D-D in fig. 6.
Fig. 9 is a partially enlarged schematic view at E in fig. 7.
Fig. 10 is a partially enlarged schematic view at F in fig. 8.
FIG. 11 is a flow chart of method steps of a method for detecting strength of a three-way pipe.
In the figure: 1. a detection workbench; 11. a guide window; 12. a guide plate; 13. a collision force digital display instrument; 2. a clamping groove positioning device; 21. a fixing frame; 22. a lifting cylinder; 23. lifting the supporting plate; 24. a clamping groove positioning block; 241. v-shaped positioning grooves; 242. a clearance groove; 3. a main pipe orifice positioning device; 31. a butt-inserting positioning table; 311. a rotary support; 3111. a support plate; 3112. a horizontal chute; 312. a bidirectional screw rod; 3121. a driven gear; 313. a guide rod; 314. a travel plate; 315. a main pipe inserted link; 32. a driving mechanism for advancing and retreating; 321. a driving motor; 322. driving a screw rod; 323. a serial connection plate; 324. a rack; 4. a branch pipe orifice positioning device; 41. a support frame; 42. a pressing cylinder; 43. lifting the seat board; 431. a fixing seat; 44. branch pipe inserted link; 441. a pressure plate; 5. a collision force application device; 51. a fixed bracket; 52. a slide rail; 521. a pulley; 53. impacting the sliding rail vehicle; 531. a percussion hammer; 532. a damping spring; 533. a pulling rod; 54. a traction lifting mechanism; 541. a winding motor; 542. a winding shaft; 543. the rope is pulled.
Detailed Description
The following detailed description of the present invention, given by way of example and not by way of limitation, is set forth in the accompanying drawings to provide a more complete, accurate and thorough understanding of the concepts and aspects of the present invention, and to facilitate its practice.
As shown in fig. 1, 2 and 3, the three-way pipe intensity detection device comprises a detection workbench 1, wherein a clamping groove positioning device 2 is fixedly arranged at the bottom end of a table top of the detection workbench 1, and a main pipe orifice positioning device 3, a branch pipe orifice positioning device 4 and a collision force application device 5 are fixedly arranged on the table top of the detection workbench 1. The invention is mainly used for detecting the strength of the positive tee pipe fitting, in particular to the ductile cast iron positive tee pipe fitting.
As shown in fig. 4, 7, 8 and 10, the clamping groove positioning device 2 comprises three clamping groove positioning blocks 24 which are vertically arranged in a lifting manner and can penetrate through the table surface of the detection workbench 1, the three clamping groove positioning blocks 24 are uniformly distributed along the horizontal straight line direction, three square guide windows 11 are correspondingly arranged on the table surface of the detection workbench 1 one by one, two opposite side edges of the guide windows 11 are vertically welded with guide plates 12, the two guide plates 12 are symmetrically arranged, the clamping groove positioning blocks 24 are positioned in the guide windows 11 and vertically and slidably arranged between the two guide plates 12, V-shaped positioning grooves 241 are arranged between two opposite side positions of the clamping groove positioning blocks 24 in a extending manner, and the clamping groove positioning blocks 24 are respectively provided with a position avoiding groove 242 at two opposite side positions; the clamping groove positioning device 2 further comprises a fixing frame 21 welded at the bottom end of the table top of the detection workbench 1 and having a -shaped structure, two lifting air cylinders 22 fixed at the bottom end face of the fixing frame 21 through bolts, and a lifting supporting plate 23 horizontally fixed at the output ends of the two lifting air cylinders 22 through bolts, wherein three clamping groove positioning blocks 24 are fixedly installed on the upper plate face of the lifting supporting plate 23 through bolts.
When the intensity detection is carried out on the three-way pipe fitting, firstly, three randomly selected three-way pipe fittings can be placed in three clamping groove positioning blocks 24 in a one-to-one correspondence mode as detection pieces in the same batch mode, so that the main pipe connecting section of the three-way pipe fitting is horizontally placed in the V-shaped positioning groove 241, the central axes of the main pipe orifices of the three-way pipe fittings which are placed are overlapped, then the height of the central axes of the main pipe orifices of the three-way pipe fittings needs to be adjusted on the same vertical surface, alignment is completed with the main pipe orifice positioning device 3, specifically, the lifting supporting plate 23 is driven to ascend or descend by synchronously starting the two lifting cylinders 22, and then the three clamping groove positioning blocks 24 and the three-way pipe fittings are driven to ascend or descend synchronously along with the three-way pipe fittings, and the height of the central axes of the main pipe orifices of the three-way pipe fitting is adjusted until the central axes and the main pipe orifice positioning device 3 are aligned.
As shown in fig. 7 and 10, the branch pipe port positioning device 4 includes three branch pipe inserting rods 44 which are driven to vertically lift and vertically oppositely arranged in one-to-one correspondence with the three clamping groove positioning blocks 24; the branch pipe opening positioning device 4 further comprises a supporting frame 41 welded on the table top of the detection workbench 1, two lower pressing cylinders 42 fixed at the top end of the supporting frame 41 through bolts, and a lifting seat plate 43 vertically and slidably installed on the supporting frame 41, wherein the lifting seat plate 43 is connected with the output ends of the two lower pressing cylinders 42 through bolts, three fixing seats 431 vertically arranged opposite to the three clamping groove positioning blocks 24 one by one are welded on the bottom end face of the lifting seat plate 43, three branch pipe inserting rods 44 are detachably installed on the bottom end faces of the three fixing seats 431 through bolts in a one-to-one correspondence mode, the connecting ends of the branch pipe inserting rods 44 are pressure plates 441 capable of pressing the connecting port ends of the three-way pipe, the branch pipe inserting rods 44 are cylindrical, the cylindrical side faces of the branch pipe inserting rods 44 are wrapped with rubber layers, the branch pipe inserting rods 44 are used for being inserted into the connecting port ends of the three-way pipe connecting ports, the diameters of the branch pipe inserting rods 44 are arranged in a matched mode with the inner diameters of the connecting port of the branch pipe connecting ports in the three-way pipe to be detected, and when strength detection is carried out on the three-way pipe connecting pipes with different diameters.
After the central shaft of the main pipe orifice of the three-way pipe fitting is aligned with the main pipe orifice positioning device 3 through the height adjustment of the clamping groove positioning device 2, the pipe orifice ends of the branch pipes of the three-way pipe fitting are manually aligned one by one, so that the pipe orifice of the branch pipe fitting is aligned vertically with the pipe inserting rod 44 at the corresponding position above, then, the two pressing cylinders 42 are synchronously started to drive the lifting seat plate 43 to slide vertically downwards, so that the three pipe inserting rod 44 descends synchronously, the pipe inserting rod 44 is correspondingly inserted into the pipe connecting end port of the three-way pipe fitting, the three-way pipe fitting is finally pressed down by the pressing plate 441 to be clamped in the pressing plate 441 and the V-shaped positioning groove 241, the rubber layer wrapped on the outer surface of the pipe inserting rod 44 enables the pipe inserting rod 44 to be in a plugging state in the pipe connecting end port of the three-way pipe fitting, the three-way pipe fitting is pressed by pressing insertion of the pipe inserting rod 44, and the central shaft position of the pipe connecting end port of the branch pipe is fixed.
As shown in fig. 1, fig. 4, fig. 5, fig. 7, fig. 8, fig. 9 and fig. 10, the main pipe opening positioning device 3 comprises four opposite insertion positioning tables 31 which are distributed along the straight line distribution direction of three clamping groove positioning blocks 24 and are uniformly distributed at intervals with the three clamping groove positioning blocks 24, opposite insertion positioning tables 31 are distributed on two sides of each clamping groove positioning block 24, two main pipe inserting rods 315 which are driven reversely and synchronously are symmetrically arranged on the opposite insertion positioning tables 31, the symmetrical direction of the two main pipe inserting rods 315 is along the distribution direction of the three opposite insertion positioning tables 31, the central shaft of the main pipe inserting rods 315 is positioned on the mirror symmetry surface of the V-shaped positioning groove 241, the main pipe inserting rods 315 and the branch pipe inserting rods 44 are of cylindrical structures, the cylindrical side surfaces of the main pipe inserting rods 315 are wrapped with rubber layers, the inner diameters of the connecting end ports of the main pipe inserting rods 315 correspond to the directions of three-way pipe fittings to be detected, and when the three-way pipe fittings with different sizes are detected, the main pipe inserting rods 315 can be disassembled and replaced correspondingly; the opposite-inserting positioning table 31 further comprises a rotating support 311 and a bidirectional screw rod 312, wherein two support plates 3111 are arranged on the rotating support 311, the bidirectional screw rod 312 is horizontally and rotatably arranged on the two support plates 3111 through bearings, two guide rods 313 are horizontally welded on the outer plate surfaces of the two support plates 3111, the two guide rods 313 at the same side are located at the same horizontal height and distributed on two sides of the bidirectional screw rod 312, a travel plate 314 is jointly and horizontally slidably arranged on the two guide rods 313 at the same side, the bidirectional screw rod 312 penetrates through the travel plate 314, the two main pipe inserting rods 315 are detachably arranged on the outer end surfaces of the two travel plates 314 in a one-to-one correspondence mode through bolts, and the two main pipe inserting rods are in one-to-one correspondence threaded connection with two threaded sections of the bidirectional screw rod 312. The driven gear 3121 is fixedly installed at a position of the bi-directional screw 312 between the two support plates 3111, and a horizontal chute 3112 is provided between the two support plates 3111, and a direction of the horizontal chute 3112 is perpendicular to an axial direction of the bi-directional screw 312. The main pipe mouth positioning device 3 further comprises an advance and retreat driving mechanism 32 for synchronously driving the four opposite-insertion positioning tables 31 and enabling two main pipe inserting rods 315 in each opposite-insertion positioning table 31 to synchronously move in directions; the driving mechanism 32 includes two driving motors 321 fixed on the table top of the detection workbench 1 through a motor base, two driving screws 322 are horizontally rotatably installed on the detection workbench 1, the two driving screws 322 are parallel to each other and one end of each driving screw 322 is fixedly connected to the output shafts of the two driving screws 322, a serial plate 323 is connected between the two driving screws 322 in a threaded mode, four racks 324 are welded on the serial plate 323, the four racks 324 are slidably installed in horizontal sliding grooves 3112 in the four opposite-inserting positioning tables 31 in a one-to-one correspondence mode, and the racks 324 are meshed with driven gears 3121 at corresponding positions.
After the three-way pipe fitting is adjusted through the clamping groove positioning device 2 so as to finish alignment with the main pipe opening positioning device 3, the central axes of the two main pipe connecting end ports of the three-way pipe fitting are aligned and overlapped with the central axes of the main pipe inserting rods 315, after the branch pipe inserting rods 44 are inserted and fixed, the three-way pipe fitting can be further fixed and positioned through the main pipe opening positioning device 3, specifically, the two driving motors 321 are synchronously started to drive the two driving screws 322 to synchronously rotate, the two driving screws 322 drive the serial plates 323 to axially move along the driving screws 322, then drive the four racks 324 to move along with the driving screws, the racks 324 drive the driven gears 3121 to rotate, the two main pipe inserting rods 315 in each opposite-inserting positioning table 31 move back under the guide of the guide rods 313 to the travel plates 314, then the main pipe inserting rods 315 positioned on two sides of the main pipe opening of the three-way pipe fitting are correspondingly inserted into the main pipe opening on one side, and the rubber layer 315 on the main pipe opening is in a plugging state in the main pipe connecting end ports of the three-way pipe fitting. The three-way pipe fitting is further clamped and fixed through the insertion of the main pipe inserted rod 315, so that the fixing strength of the three-way pipe fitting is greatly improved, the impact force can be directly born more stably, and more accurate strength data can be reflected; in addition, the branch pipe inserting rods 44 are inserted into the branch pipe openings, and the two main pipe inserting rods 315 are inserted into the two main pipe openings in a one-to-one correspondence manner, which is equivalent to that the three pipe openings of the three-way pipe fitting are connected with the pipeline in the actual pipeline connection state, and the connection internal support is formed, so that the strength detection data in the actual pipeline connection state can be reflected more conveniently.
As shown in fig. 5 and 10, the impact force applying device 5 includes a total of four impact rail vehicles 53 for impacting the three-way pipe fitting, the impact rail vehicles 53 are one more than the number of the clamping groove positioning blocks 24, the impact force digital display 13 is fixedly mounted on the detection workbench 1 through bolts, the impact force digital display 13 is the existing equipment, and can be directly purchased in the market, for example, the impact force digital display 13 is used in a boxing training field and can be used for detecting the boxing force; one of the collision sliding rail vehicles 53 is correspondingly arranged with the collision force digital display 13, the collision force digital display 13 can provide visual collision force values of the collision sliding rail vehicles 53, and the other three collision sliding rail vehicles 53 are correspondingly arranged with the three clamping groove positioning blocks 24 one by one and are used for directly carrying out collision detection on the three-way pipe fitting. The impact hammer 531 is mounted on the impact rail car 53 in a horizontal sliding manner on one side facing the clamping groove positioning block 24, the impact hammer 531 is mounted in the impact rail car 53 in an embedded sliding manner, the impact hammer 531 is sleeved with the damping spring 532, and two ends of the damping spring 532 are respectively welded on the impact hammer 531 and the impact rail car 53. During an actual impact, the impact hammer 531 first impacts the three-way pipe member, and the impact force of the entire impact rail car 53 directly acts on the three-way pipe member, and then the damping spring 532 is compressed and completes damping consumption under multiple impacts until the kinetic energy consumption of the impact rail car 53 is completely stationary.
As shown in fig. 1, 5, 6, 7 and 10, the impact force applying device 5 further includes a fixed bracket 51 welded to the inspection table 1, four slide rails 52 welded to the fixed bracket 51, and a pulling and lifting mechanism 54 mounted on the fixed bracket 51 for simultaneously pulling and lifting all the impact slide rails 53; the four collision sliding rail vehicles 53 are correspondingly and slidably arranged on the four sliding rails 52 one by one, the sliding rails 52 are sequentially divided into vertical sections, arc sections and horizontal ends from top to bottom, the vertical sections are mainly used for accelerating the collision sliding rail vehicles 53, the arc sections are used for reversing and sliding the collision sliding rail vehicles 53 from the vertical sections to the horizontal ends, the horizontal sections are used for guiding the collision sliding rail vehicles 53 to perform front collision relative to the three-way pipe fitting, and the horizontal sections are nearest to the clamping groove positioning blocks 24 at the corresponding positions; the four impact railcars 53 are fixedly connected to the pulling end of the pulling lift mechanism 54. The traction lifting mechanism 54 comprises a winding motor 541 fixed at the side end of the fixed bracket 51 through a bolt and a winding shaft 542 horizontally rotatably mounted on the fixed bracket 51 through a bearing, wherein the axial direction of the winding shaft 542 is along the distribution direction of the four sliding rails 52, and one side shaft end is fixed on an output shaft of the winding motor 541; the two sides of the vertical section of the sliding rail 52, which are close to the top end, are symmetrically provided with the pulleys 521 which are horizontally and rotatably installed, the two sides of the collision sliding rail vehicle 53, which are positioned in the direction perpendicular to the sliding direction, are symmetrically welded with the traction rods 533, the lifting ropes 543 are fixedly connected between the traction rods 533 and the winding shaft 542, the lifting ropes 543 can be steel wire ropes, the reliable tensile strength can be ensured, the lifting ropes 543 bypass the pulleys 521 on the same side of the traction rods 533 connected with the lifting ropes 543, and the pulleys 521 provide guidance for the lifting ropes 543.
The impact rail 53 is used for directly impacting the three-way pipe, the magnitude of impact force mainly looks at the magnitude of kinetic energy obtained by the impact rail 53, and the magnitude of the kinetic energy is related to the mass and the speed, because the mass of the impact rail 53 is fixed, it is obvious that when the speed of the impact rail 53 is higher, the greater the obtained kinetic energy is, and the corresponding impact force is higher. In this embodiment, the pulling lifting mechanism 54 is used to synchronously lift the heights of the four impact sliding rail vehicles 53, specifically, the winding motor 541 is started to drive the winding shaft 542 to rotate, so that the winding shaft 542 winds all the lifting ropes 543 synchronously, the lifting ropes 543 located at two sides of the impact sliding rail vehicles 53 can be lifted to a certain height in cooperation during winding, the more winding quantity is, the higher the lifting height of the impact sliding rail vehicles 53 is, the greater the gravitational potential energy is, the more the winding motor 541 is required to be a self-locking motor, the impact sliding rail vehicles 53 are locked at the corresponding heights after the winding motor 541 completes self-locking, and in a non-self-locking state when the impact detection is performed, so that the impact sliding rail vehicles 53 are not limited by the pulling force of the lifting rope 543, the impact sliding rail vehicles 53 slide down along the sliding rails 52, the gravitational potential energy of the impact sliding rail vehicles 53 is gradually converted into kinetic energy, the speed is higher and the lower sliding to the horizontal section, and the impact hammer 531 directly impacts the center position of three pipe openings after the three-way pipe fitting, thereby completing the test. The height of the rail 52 is sufficient to provide the kinetic energy required for detection of an impact with the rail car 53.
After the three-way pipe fitting is completely positioned and fixed, synchronous collision detection can be carried out on the three-way pipe fittings, in the actual detection process, multiple collision tests are sequentially completed according to the sequence from low height to high height of the sliding rail 52 vehicle, after each collision test is completed, the state of each three-way pipe fitting is observed, when only one of the three-way pipe fittings is required to generate collision and rupture, the subsequent detection can be stopped, and the collision force of the detection can be directly read through the collision force data reflected on the collision force digital display 13.
After the intensity detection of a batch of three tee pipe fittings, the three tee pipe fittings can be disassembled quickly in a mode of firstly withdrawing the branch pipe inserted rod 44 and then withdrawing the main pipe inserted rod 315, then repeated detection of multiple batches is carried out, and finally the average value of the intensity detection values recorded each time is taken as the intensity value of the tee pipe fitting of the detected model.
In addition, as shown in fig. 11, the invention also provides a method for detecting the strength of the tee pipe fitting, which comprises the following steps:
s1, sequentially placing a plurality of randomly selected three-way pipe fittings in a plurality of clamping groove positioning blocks 24, and enabling the central shaft of the main pipe port of the three-way pipe fitting to be coincident with the central shafts of main pipe inserting rods 315 on two sides through height adjustment of the clamping groove positioning devices 2.
S2, the branch pipe inserting rod 44 is inserted into a branch pipe connecting end port of the three-way pipe fitting through the branch pipe port positioning device 4, and the three-way pipe fitting is clamped between the pressure plate 441 and the clamping groove positioning block 24.
S3, inserting the main pipe inserting rod 315 into a main pipe connecting end port of the three-way pipe fitting through the main pipe port positioning device 3.
S4, sequentially lifting the height of the collision sliding rail vehicle 53 through the traction lifting mechanism 54 in sequence from low to high, performing collision detection on the three-way pipe fittings at different heights, and recording collision force data detected when one of the three-way pipe fittings is damaged and broken.
S5, carrying out repeated intensity detection tests in batches, and taking the average value of the repeated collision intensity detection as the intensity value of the three-way pipe fitting of the detected model.
Those skilled in the art will appreciate that the above-described modifications may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and are not described herein. Such modifications do not affect the essence of the present invention, and are not described herein.
The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art will make many possible variations and modifications, or adaptations to equivalent embodiments without departing from the technical solution of the present invention, which do not affect the essential content of the present invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. A tee bend pipe fitting intensity check out test set, its characterized in that: the device comprises a detection workbench (1), wherein a clamping groove positioning device (2) is fixedly arranged at the bottom end of a table top of the detection workbench (1), and a main pipe orifice positioning device (3), a branch pipe orifice positioning device (4) and a collision force application device (5) are fixedly arranged on the table top of the detection workbench (1); wherein:
the clamping groove positioning device (2) comprises a plurality of clamping groove positioning blocks (24) which are vertically arranged in a lifting manner and can penetrate through the table top of the detection workbench (1), the clamping groove positioning blocks (24) are uniformly distributed along the horizontal straight line direction, and when the plurality of three-way pipe fittings are placed in the plurality of clamping groove positioning blocks (24) in a one-to-one correspondence manner, main pipe openings of the plurality of three-way pipe fittings axially coincide; the main pipe opening positioning device (3) comprises a plurality of opposite inserting positioning tables (31) which are distributed along the straight line distribution direction of a plurality of clamping groove positioning blocks (24) and are uniformly and alternately distributed with the clamping groove positioning blocks (24), the opposite inserting positioning tables (31) are distributed on two sides of each clamping groove positioning block (24), two main pipe inserting rods (315) which are driven in opposite directions are symmetrically arranged on each opposite inserting positioning table (31), and the symmetrical direction of the two main pipe inserting rods (315) is along the distribution direction of the opposite inserting positioning tables (31); the main pipe mouth positioning device (3) further comprises an advance and retreat driving mechanism (32) for synchronously driving a plurality of opposite inserting positioning tables (31) and enabling two main pipe inserting rods (315) in each opposite inserting positioning table (31) to move in the synchronous direction; the branch pipe port positioning device (4) comprises a plurality of branch pipe inserting rods (44) which are driven to vertically lift and vertically oppositely arranged in one-to-one correspondence with the clamping groove positioning blocks (24);
the collision force application device (5) comprises a plurality of collision sliding rail vehicles (53) which are used for colliding three-way pipe fittings and are larger than the clamping groove positioning blocks (24), a collision force digital display instrument (13) is fixedly installed on the detection workbench (1), one of the collision sliding rail vehicles (53) is correspondingly arranged with the collision force digital display instrument (13), and the rest of the collision sliding rail vehicles (53) are correspondingly arranged with the clamping groove positioning blocks (24) one by one.
2. The three-way pipe fitting strength detection device according to claim 1, wherein: the collision force application device (5) further comprises a fixed bracket (41) fixed on the detection workbench (1), a plurality of sliding rails (42) fixed on the fixed bracket (41) and a traction lifting mechanism (54) assembled on the fixed bracket (41) and used for synchronously pulling and lifting all the collision sliding rails (53); the collision sliding rail vehicles (53) are correspondingly and slidably arranged on the sliding rails (42), the sliding rails (42) are sequentially divided into vertical sections, arc sections and horizontal ends from top to bottom, and the horizontal sections are nearest to the clamping groove positioning blocks (24) at the corresponding positions; the plurality of collision sliding rail vehicles (53) are fixedly connected to the pulling ends of the pulling lifting mechanisms (54).
3. The three-way pipe fitting strength detection device according to claim 2, wherein: the impact hammer (531) is horizontally and slidably arranged on one side, facing the clamping groove positioning block (24), of the impact rail vehicle (53), the damping spring (532) is sleeved on the impact hammer (531), and two ends of the damping spring (532) are respectively fixed on the impact hammer (531) and the impact rail vehicle (53).
4. The three-way pipe fitting strength detection device according to claim 2, wherein: the traction lifting mechanism (54) comprises a winding motor (541) fixed at the side end of the fixed bracket (41) and a winding shaft (542) horizontally rotatably installed on the fixed bracket (41), wherein the axial direction of the winding shaft (542) is along the distribution direction of a plurality of sliding rails (42), and one side shaft end is fixed on an output shaft of the winding motor (541); the horizontal rotary type track device is characterized in that pulleys (521) which are installed in a horizontal rotary mode are symmetrically arranged on two sides, close to the top end, of the vertical section of the sliding rail (42), traction rods (533) are symmetrically arranged on two sides, perpendicular to the sliding direction, of the collision sliding rail vehicle (53), lifting ropes (543) are fixedly connected between the traction rods (533) and the winding shaft (542), and the lifting ropes (543) bypass the pulleys (521) on the same side of the traction rods (533) connected with the lifting ropes.
5. The three-way pipe fitting strength detection device according to claim 1, wherein: the opposite-inserting positioning table (31) further comprises a rotary support (311) and a bidirectional screw rod (312) horizontally and rotatably installed on the rotary support (311), wherein a plurality of guide rods (313) are horizontally and fixedly installed on two sides of the rotary support (311) in the axial direction of the bidirectional screw rod (312), a travel plate (314) is jointly and horizontally slidably installed on the plurality of guide rods (313) on the same side, the bidirectional screw rod (312) penetrates through the travel plate (314), and two main pipe inserting rods (315) are detachably installed on the outer end faces of the two travel plates (314) in a one-to-one correspondence manner and are in one-to-one correspondence threaded connection with two threaded sections of the bidirectional screw rod (312); the driving and reversing mechanism (32) is used for driving the bidirectional screw rod (312) to rotate.
6. The three-way pipe fitting strength detection device according to claim 1, wherein: the clamping groove positioning blocks (24) are provided with V-shaped positioning grooves (241) in an extending mode between two opposite side positions in the distribution direction of the clamping groove positioning blocks (24), the clamping groove positioning blocks (24) are provided with position avoiding grooves (242) in an extending mode at two other opposite side positions, and the V-shaped positioning grooves (241) and the position avoiding grooves (242) are arranged in an interpenetration mode.
7. The three-way pipe fitting strength detection device according to claim 1, wherein: the branch pipe inserting rod (44) is detachably mounted, and the connecting end of the branch pipe inserting rod (44) is a pressure plate (441) capable of pressing the connecting port end of the branch pipe of the three-way pipe fitting.
8. The three-way pipe fitting strength detection device according to claim 1, wherein: the main pipe inserting rod (315) and the branch pipe inserting rod (44) are cylindrical, and rubber layers are wrapped on the cylindrical side surfaces of the main pipe inserting rod (315) and the branch pipe inserting rod (44).
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| CN202211495104.5A CN115752995B (en) | 2022-11-26 | 2022-11-26 | Tee joint pipe fitting strength detection equipment and method |
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| CN202211495104.5A CN115752995B (en) | 2022-11-26 | 2022-11-26 | Tee joint pipe fitting strength detection equipment and method |
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