CN115752995A - Three-way pipe fitting strength detection equipment and method - Google Patents
Three-way pipe fitting strength detection equipment and method Download PDFInfo
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- CN115752995A CN115752995A CN202211495104.5A CN202211495104A CN115752995A CN 115752995 A CN115752995 A CN 115752995A CN 202211495104 A CN202211495104 A CN 202211495104A CN 115752995 A CN115752995 A CN 115752995A
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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 method, wherein the three-way pipe fitting strength detection device comprises a detection workbench, a clamping groove positioning device is fixedly installed 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 assembled on the table top of the detection workbench; the equipment provided by the invention reduces the influence of variable factors on the strength detection test accuracy in a batch detection mode, so that a more real strength detection average strength value can be obtained; in addition, the fixing stability is tested by enhancing the tee pipe fitting, 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 fitting quality detection, and particularly provides a three-way pipe fitting strength detection device and method.
Background
The three-way pipe fitting is a communicating pipe fitting used for communicating pipelines at the position where a branch pipe needs to be separated in a main pipeline in a pipeline system, and can be divided into different three-way pipe fittings according to the classification forms such as pipe diameter, installation butt joint form, branch pipe distribution form and material, wherein the three-way pipe fitting can be divided into a positive tee joint and an oblique tee joint according to the branch pipe distribution form, and can be divided into a stainless steel tee joint, a carbon steel tee joint, a copper tee joint, a plastic tee joint, a nodular cast iron tee joint and the like according to the material; the invention provides a tee pipe strength detection device and method, which mainly aim at detecting a nodular cast iron positive tee which is a tee pipe made of nodular cast iron and formed by casting, and a branch pipe is vertical to a main pipe.
On one hand, the nodular cast iron tee pipe fitting is made of nodular cast iron, the hardness of the nodular cast iron is high, but the brittleness of the nodular cast iron tee pipe fitting is high, on the other hand, the nodular cast iron tee pipe fitting is formed by adopting a casting process, the casting process determines that the density of the formed material is lower than that of common steel, the density distribution of the nodular cast iron tee pipe fitting is directly uneven due to uneven shrinkage of the casting in the cooling and solidification process, and the overall strength of the nodular cast iron tee pipe fitting is finally and directly influenced by the combination of the above factors. In the practical application process, the nodular cast iron tee joint pipe fitting can be arranged in various different complex environments along with a pipeline system, and in order to avoid damage and fracture of the pipeline system at the joint of the tee joint pipe fitting caused by the fact that the nodular cast iron tee joint pipe fitting is used in the pipeline system which does not meet the strength requirement, the strength of the nodular cast iron tee joint pipe fitting is required to be detected, so that the reliable strength range of the tee joint pipe fitting is determined.
Under current intensity detection, generally adopt impact equipment to carry out individual intensity detection to single tee bend pipe fitting, in the testing process, have following problem usually:
1) When the three-way pipe fitting is detected independently, the quality of the selected three-way pipe fitting for detection is random, the operation of each impact detection is random, namely variable factors cannot be controlled better, and therefore the finally detected strength detection data has randomness and contingency in a certain proportion.
2) When the strength of the three-way pipe fitting is detected, the three-way pipe fitting is not reliably and stably fixed generally, impact detection is carried out on the premise of unreliable fixation, and real strength detection data cannot be reflected to the greatest extent, so that actual detection data are large.
Disclosure of Invention
In order to solve the above problems, the present invention provides a tee pipe strength detection apparatus and method, which are used to solve the above problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a tee pipe fitting strength detection device comprises a detection workbench, wherein a clamping groove positioning device is fixedly installed at the bottom end of the table top of the detection workbench, and a main pipe orifice positioning device, a branch pipe orifice positioning device and an impact force application device are fixedly assembled 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 mode and can penetrate through the table surface of the detection workbench, the clamping groove positioning blocks are uniformly distributed along the horizontal linear direction, and when the three-way pipes are placed in the clamping groove positioning blocks in a one-to-one correspondence mode, main pipe openings of the three-way pipes are axially overlapped; the main pipe opening positioning device comprises a plurality of opposite-insertion positioning tables which are distributed along the linear distribution direction of the plurality of clamping groove positioning blocks and are uniformly distributed with the plurality of clamping groove positioning blocks at intervals, the opposite-insertion positioning tables are distributed on two sides of each clamping groove positioning block, two main pipe inserting rods driven in a reverse synchronous mode are symmetrically arranged on the opposite-insertion positioning tables, and the symmetrical direction of the two main pipe inserting rods is along the distribution direction of the plurality of opposite-insertion positioning tables; the main pipe opening positioning device also comprises an advancing and retreating driving mechanism which is used for synchronously driving the plurality of opposite insertion positioning tables and enabling the two main pipe inserted rods in each opposite insertion positioning table to move in the synchronous direction; the branch pipe opening positioning device comprises a plurality of branch pipe inserted rods which are vertically driven to lift and are vertically and oppositely arranged in one-to-one correspondence with the plurality of clamping groove positioning blocks; the collision force application device comprises collision slide rail vehicles which are more than the clamping groove positioning blocks in number and used for colliding the tee pipe fitting, collision force digital display instruments are fixedly installed on the detection workbench, one collision slide rail vehicle is arranged corresponding to the collision force digital display instrument, and the rest collision slide rail vehicles are arranged corresponding to the clamping groove positioning blocks one to one.
Preferably, the collision force application device further comprises a fixed support fixed on the detection workbench, a plurality of slide rails fixed on the fixed support, and a traction lifting mechanism assembled on the fixed support and used for synchronously traction lifting all collision slide rail vehicles; the collision slide rail vehicles are slidably mounted on the slide rails in a one-to-one correspondence manner, the slide rails are sequentially divided into a vertical section, an arc-shaped section and a horizontal end from top to bottom, and the horizontal section is closest to the corresponding position of the clamping groove positioning block; and the plurality of collision slide rail vehicles are all fixedly connected to the traction end of the traction lifting mechanism.
Preferably, an impact hammer is horizontally and slidably mounted on one side, facing the clamping groove positioning block, of the impacting slide rail vehicle, a damping spring is sleeved on the impact hammer, and two ends of the damping spring are fixed to the impact hammer and the impacting slide rail vehicle respectively.
Preferably, the traction lifting mechanism comprises a winding motor fixed at the side end of the fixed support and a winding shaft horizontally and rotatably mounted on the fixed support, the axial direction of the winding shaft is along the distribution direction of the plurality of slide rails, and one side shaft end of the winding shaft is fixed on an output shaft of the winding motor; the two sides of the vertical section of the slide rail, which are close to the top end, are symmetrically provided with pulleys which are horizontally and rotatably installed, the two sides of the collision slide rail vehicle, which are perpendicular to the sliding direction, are symmetrically provided with traction rods, a lifting rope is fixedly connected between the traction rods and the winding shaft, and the lifting rope bypasses the pulleys which are connected with the lifting rods and are on the same side of the traction rods.
Preferably, the opposite-insertion positioning table further comprises a rotary support and a bidirectional screw rod horizontally and rotatably mounted on the rotary support, the rotary support is horizontally and fixedly mounted with a plurality of guide rods on two sides in the axial direction of the bidirectional screw rod, a stroke plate is jointly and horizontally slidably mounted on the plurality of guide rods on the same side, the bidirectional screw rod penetrates through the stroke plate, the two main pipe insertion rods are detachably mounted on the outer end surfaces of the two stroke 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 driving mechanism is used for driving the bidirectional screw rod to rotate.
Preferably, the clamping groove positioning blocks extend and are provided with V-shaped positioning grooves between two opposite side positions in the distribution direction of the plurality of clamping groove positioning blocks, the clamping groove positioning blocks extend and are provided with avoiding grooves at the other two opposite side positions, and the V-shaped positioning grooves and the avoiding grooves are arranged in an alternating manner.
Preferably, the branch pipe inserted bar is detachably mounted, and the connecting end of the branch pipe inserted bar is a pressure plate capable of compressing the end of the branch pipe connecting end of the tee pipe fitting.
Preferably, the main pipe inserted bar and the branch pipe inserted bar are cylindrical, and the rubber layer is wrapped on the side surface of the main pipe inserted bar cylinder and the side surface of the branch pipe inserted bar cylinder.
In addition, 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 tee pipe fittings in a plurality of clamping groove positioning blocks, and enabling the central shaft of a main pipe port of each tee pipe fitting to be coincident and aligned with the central shafts of main pipe inserted rods on two sides through height adjustment of clamping groove positioning devices.
S2, inserting the branch pipe inserted bar 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 pressing plate and the clamping groove positioning block.
And S3, inserting the main pipe inserted bar into the main pipe connecting end port of the three-way pipe fitting through the main pipe port positioning device.
And S4, sequentially lifting the heights of the collision slide rail cars through the traction lifting mechanism according to the sequence from low to high, performing collision detection on the three-way pipe fittings at different heights, and recording collision force data of the detection when one of the three-way pipe fittings is damaged and broken.
And S5, carrying out repeated strength detection tests in multiple batches, and taking the average value of multiple times of collision force detection as the strength value of the tee pipe fitting of the detected type.
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 carry out batch strength detection on three-way pipes in the same batch, and reduces the influence of variable factors on strength detection test accuracy, thereby obtaining a more real strength detection average strength value.
2. The invention provides a tee pipe fitting strength detection device, which can position and fix a tee pipe fitting through an arranged clamping groove positioning device, can be matched with a branch pipe opening positioning device to clamp, position and fix the tee pipe fitting, and can further strengthen the clamping and fixing of the tee pipe fitting through an arranged main pipe opening positioning device, so that the stability of the test state of the tee pipe fitting is greatly improved, the tee pipe fitting can bear the detection impact force more stably and directly, and more accurate strength data can be reflected; in addition, the branch pipe inserted bar inserts three-way pipe spare branch mouth of pipe, and two main pipe inserted bars one-to-one insert two main mouths of pipe of three-way pipe spare, and three mouth of pipe department that is equivalent to three-way pipe spare all is connected with the pipeline and has formed the connection interior support under the actual pipeline connected state to more do benefit to the intensity detection data under the reaction actual pipeline connected state, to sum up, through reinforcing three-way pipe spare test fixed stability, improved intensity detection numerical accuracy and authenticity greatly.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic perspective view of a tee pipe strength testing apparatus provided by the present invention at a first viewing angle.
Fig. 2 is a schematic perspective view of a tee pipe strength testing apparatus provided by the present invention at a second viewing angle.
Fig. 3 is a schematic perspective structure view of a tee pipe strength detection apparatus provided by the invention at a third viewing angle.
Fig. 4 is a partially enlarged schematic view of a in fig. 1.
Fig. 5 is a partially enlarged schematic view of B in fig. 2.
FIG. 6 is a top view of a tee pipe strength testing apparatus provided by the present invention.
Fig. 7 is a cross-sectional view of C-C in 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 tee fitting strength detection method.
In the figure: 1. a detection workbench; 11. a guide window; 12. a guide plate; 13. a digital display instrument for the collision force; 2. a card slot positioning device; 21. a fixed mount; 22. a lifting cylinder; 23. a lifting support plate; 24. a clamping groove positioning block; 241. a V-shaped positioning groove; 242. a position avoiding groove; 3. a main pipe orifice positioning device; 31. opposite insertion positioning table; 311. a rotary support; 3111. a support plate; 3112. a horizontal chute; 312. a bidirectional lead screw; 3121. a driven gear; 313. a guide bar; 314. a stroke plate; 315. a main pipe inserted rod; 32. a forward and backward driving mechanism; 321. a drive motor; 322. driving a lead screw; 323. a series of plates; 324. a rack; 4. a branch pipe orifice positioning device; 41. a support frame; 42. pressing down the air cylinder; 43. a lifting seat plate; 431. a fixed seat; 44. inserting a branch pipe into a rod; 441. a platen; 5. a collision force application device; 51. a fixed bracket; 52. a slide rail; 521. a pulley; 53. impacting the slide rail vehicle; 531. an impact hammer; 532. a damping spring; 533. a traction rod; 54. a pulling and lifting mechanism; 541. a winding motor; 542. a winding shaft; 543. and (5) lifting the rope.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.
As shown in fig. 1, fig. 2 and fig. 3, a tee pipe strength detection device comprises a detection workbench 1, a clamping groove positioning device 2 is fixedly mounted at the bottom end of the table top of the detection workbench 1, and a main pipe orifice positioning device 3, a branch pipe orifice positioning device 4 and an impact force application device 5 are fixedly mounted on the table top of the detection workbench 1. The invention is mainly used for detecting the strength of the tee pipe fitting, in particular to the nodular cast iron tee pipe fitting.
As shown in fig. 4, 7, 8 and 10, the slot positioning device 2 includes three slot positioning blocks 24 vertically disposed and capable of penetrating through the table top of the detection table 1, the three slot positioning blocks 24 are uniformly distributed along a horizontal straight line direction, three square guide windows 11 are correspondingly disposed on the table top of the detection table 1 with respect to the three slot positioning blocks 24 one by one, two opposite side positions in the guide windows 11 are vertically welded with guide plates 12, the two guide plates 12 are symmetrically disposed, the slot positioning blocks 24 are disposed in the guide windows 11 and vertically slidably mounted between the two guide plates 12, the slot positioning blocks 24 are provided with V-shaped positioning slots 241 extending between two opposite side positions in the distribution direction of the three slot positioning blocks 24, the slot positioning blocks 24 are provided with clearance slots 242 extending between the other two opposite side positions, the V-shaped positioning slots 241 and the clearance slots 242 are disposed to be inserted into each other, the V-shaped positioning slots 241 are used for horizontally positioning the tee pipe, when the three tee pipe fittings are correspondingly disposed in the V-shaped positioning slots 241 of the three positioning blocks 24 one by one, main pipe mouths of the three tee pipe fittings coincide axially, that is used for determining the central axis position of the tee pipe mouths of the tee pipe, and mainly used for collision of the clearance slots 242 for detection; the clamping groove positioning device 2 further comprises a fixing frame 21 of a V-21274-shaped structure welded at the bottom end of the table top of the detection workbench 1, two lifting cylinders 22 fixed at the bottom end face of the fixing frame 21 through bolts, and a lifting support plate 23 horizontally fixed at the output ends of the two lifting cylinders 22 through bolts, and three clamping groove positioning blocks 24 are fixedly mounted on the upper plate face of the lifting support plate 23 through bolts together.
Carry out intensity detection to the tee bend pipe fitting when, at first can place three tee bend pipe fitting of choosing at random in three draw-in groove locating piece 24 as with batching detection piece one-to-one, make the main pipe linkage segment level of tee bend pipe fitting place in V type constant head tank 241, the mouth center pin coincidence of being responsible for of the three tee bend pipe fitting of accomplishing placing, need adjust the height of tee bend pipe fitting main mouth of pipe center pin afterwards on same vertical plane, thereby accomplish the counterpoint with being responsible for mouth positioner 3, it is concrete, drive lifting support plate 23 through two lift cylinders 22 of synchronous start-up and rise or descend, then drive three draw-in groove locating piece 24 and three tee bend pipe fitting synchronous rising or descending thereupon, thereby adjust the height of tee bend pipe fitting main mouth of pipe center pin, it can to accomplish the counterpoint with being responsible for mouth positioner 3 up to the center pin.
As shown in fig. 7 and 10, the branch pipe opening positioning device 4 includes three branch pipe insertion rods 44 vertically driven to move up and down and vertically arranged opposite to the three slot positioning blocks 24 one by one; the branch pipe port positioning device 4 further comprises a support frame 41 welded on the table top of the detection workbench 1, two down-pressure cylinders 42 fixed at the top end of the support frame 41 through bolts, and a lifting seat plate 43 vertically and slidably mounted on the support frame 41, the lifting seat plate 43 is connected with the output ends of the two down-pressure cylinders 42 through bolts, three fixing seats 431 vertically and oppositely arranged with three clamping groove positioning blocks 24 are welded on the bottom end face of the lifting seat plate 43, three branch pipe insertion rods 44 are detachably mounted on the bottom end faces of the three fixing seats 431 in a one-to-one correspondence manner through bolts, the connecting end of each branch pipe insertion rod 44 is a pressure plate 441 capable of compressing the branch pipe connecting end of the tee pipe, each branch pipe insertion rod 44 is cylindrical, the cylindrical side face of each branch pipe insertion rod 44 is wrapped with a rubber layer, each branch pipe insertion rod 44 is used for being inserted into the branch pipe connecting end port of the tee pipe, the diameter of each branch pipe insertion rod 44 is matched with the inner diameter of the branch pipe connecting end port in the tee pipe to be detected, and when strength detection is carried out on the tee pipe with different diameters, the branch pipe connecting end ports, the branch pipe insertion rods 44 with corresponding sizes can be detachably replaced.
After the alignment between the main pipe orifice central shaft of the three-way pipe fitting and the main pipe orifice positioning device 3 is completed through the height adjustment of the clamping groove positioning device 2, the branch pipe orifice ends of the three-way pipe fittings can be manually aligned one by one, so that the branch pipe orifice of the three-way pipe fitting and the branch pipe inserted rod 44 at the corresponding position above the branch pipe orifice end of the three-way pipe fitting complete vertical alignment, then, the two pressing cylinders 42 are synchronously started to drive the lifting seat plate 43 to vertically slide downwards, so that the three branch pipe inserted rods 44 synchronously descend, the branch pipe inserted rod 44 is correspondingly inserted into the branch pipe connecting end port of the three-way pipe fitting, and finally, the three-way pipe fitting is clamped in the pressure plate 441 and the V-shaped positioning groove 241 through the pressing of the pressure plate 441 downwards, the rubber layer wrapped on the outer surface of the branch pipe inserted rod 44 enables the branch pipe inserted rod 44 to be in a plugging state in the branch pipe connecting end port of the three-way pipe fitting, the three-way pipe fitting is compacted through the compaction insertion of the branch pipe inserted rod 44, and the central shaft position of the branch pipe connecting end port can be fixed.
As shown in fig. 1, 4, 5, 7, 8, 9 and 10, the main pipe port positioning device 3 includes four opposite insertion positioning tables 31 distributed linearly along the three slot positioning blocks 24 and uniformly spaced from the three slot positioning blocks 24, opposite insertion positioning tables 31 are distributed on both sides of each slot positioning block 24, two main pipe insertion rods 315 driven reversely and synchronously are symmetrically arranged on the opposite insertion positioning tables 31, the symmetric directions of the two main pipe insertion rods 315 are along the distribution directions of the three opposite insertion positioning tables 31, the central axis of the main pipe insertion rod 315 is located on the mirror symmetry plane of the V-shaped positioning slot 241, the main pipe insertion rod 315 and the branch pipe insertion rods 44 are also in a cylindrical structure, and the cylindrical side surfaces of the main pipe insertion rods 315 are wrapped with rubber layers, the inner diameter of the main pipe connection end port in the main pipe insertion rod 315 corresponds to the three-way pipe to be detected, and the main pipe insertion rod 315 can be detached and replaced correspondingly when the three-way pipe to be detected for different sizes; opposite-inserting positioning table 31 further comprises a rotary support 311 and a bidirectional screw 312, two support plates 3111 are arranged on rotary support 311, bidirectional screw 312 is horizontally rotatably mounted on two support plates 3111 through bearings, two guide rods 313 are horizontally welded on outer plate surfaces of two support plates 3111, two guide rods 313 at the same side are located at the same horizontal height and distributed on two sides of bidirectional screw 312, two guide rods 313 at the same side are jointly horizontally slidably mounted with stroke plates 314 on the same side, bidirectional screw 312 penetrates through stroke plates 314, two main pipe inserted rods 315 are detachably mounted on outer end surfaces of two stroke plates 314 through bolts in one-to-one correspondence, and the one-to-one correspondence is in threaded connection with two thread sections of bidirectional screw 312. A driven gear 3121 is fixedly mounted on the bidirectional screw 312 at a position between the two support plates 3111, a horizontal sliding groove 3112 is provided between the two support plates 3111, and the direction of the horizontal sliding groove 3112 is perpendicular to the axial direction of the bidirectional screw 312. The main pipe opening positioning device 3 further comprises an advancing and retreating driving mechanism 32 for synchronously driving the four opposite insertion positioning tables 31 and enabling the two main pipe insertion rods 315 in each opposite insertion positioning table 31 to move in the synchronous direction; the driving and reversing driving mechanism 32 comprises two driving motors 321 fixed on the table top of the detection workbench 1 through motor bases, two driving screws 322 are horizontally and rotatably installed on the detection workbench 1, the two driving screws 322 are arranged in parallel, one end of each driving screw is fixedly connected to the output shafts of the two driving screws 322 in a one-to-one correspondence mode, a common threaded connection is formed between the two driving screws 322 and is provided with a series connection plate 323, four racks 324 are welded on the series connection plate 323, the four racks 324 are slidably installed in horizontal sliding grooves 3112 in the four opposite-insertion positioning tables 31 in a one-to-one correspondence mode, and the racks 324 are meshed with driven gears 3121 in corresponding positions.
After the three-way pipe fitting is adjusted through the clamping groove positioning device 2 to be aligned 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 and the central axis of the main pipe inserting rod 315 are aligned and overlapped, 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, two driving screws 321 are driven by synchronously starting the two driving motors 321 to synchronously rotate, the two driving screws 322 drive the serial plate 323 to axially move along the driving screws 322, and then the four racks 324 are driven to move along with the driving screws, the racks 324 drive the driven gears 3121 to enable the two-way screws 312 to rotate, under the guiding of the guide rods 313 to the stroke plate 314, the two main pipe inserting rods 315 in each opposite-insertion positioning table 31 move backwards, and then the main pipe inserting rods 315 at the two sides of the main pipe opening of the three-way pipe fitting are correspondingly inserted into the main pipe opening at one side, and the main pipe opening is in a tight plugging state on the rubber layer of the main pipe opening. Through the insertion of the main pipe inserted rod 315, the three-way pipe is further supported and fixed, the fixing strength of the three-way pipe is greatly improved, the impact force can be borne more stably and directly, and more accurate strength data can be reflected; in addition, the branch pipe insertion rods 44 are inserted into the branch pipe openings, the two main pipe insertion rods 315 are inserted into the two main pipe openings in a one-to-one correspondence manner, and equivalently, the three pipe openings of the three-way pipe fitting are all connected with the pipelines and form the connection inner support in the actual pipeline connection state, so that the intensity detection data in the actual pipeline connection state can be better reflected.
As shown in fig. 5 and 10, the impact force application device 5 includes impact slide rail cars 53 which are more than the slot positioning blocks 24 and are used for impacting tee pipe fittings, the number of the impact slide rail cars 53 is four, the detection workbench 1 is fixedly provided with a digital impact force display instrument 13 through bolts, the digital impact force display instrument 13 is an existing device and can be directly purchased in the market, for example, the digital impact force display instrument 13 is used in a boxing training field and can be used for detecting boxing force; one of the collision slide rail vehicles 53 is arranged corresponding to the collision force digital display instrument 13, the collision force digital display instrument 13 can provide visual collision force numerical values of the collision slide rail vehicles 53, and the other three collision slide rail vehicles 53 are arranged corresponding to the three clamping groove positioning blocks 24 one by one and are used for directly performing collision detection on the three-way pipe fitting. The impact hammer 531 is horizontally installed on one side, facing the clamping groove positioning block 24, of the impact slide rail car 53 in a sliding mode, specifically, the impact hammer 531 is installed in the impact slide rail car 53 in an embedded mode in a sliding mode, the impact hammer 531 is sleeved with a damping spring 532, and two ends of the damping spring 532 are respectively welded to the impact hammer 531 and the impact slide rail car 53. In the actual collision process, the impact hammer 531 impacts the tee pipe for the first time, the impact force of the whole collision trolley 53 directly acts on the tee pipe, and then the damping spring 532 is compressed and finishes damping consumption under multiple impacts until the kinetic energy consumption of the collision trolley 53 is completely static.
As shown in fig. 1, 5, 6, 7 and 10, the collision force application device 5 further includes a fixed bracket 51 welded to the detection 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 synchronously pulling and lifting all the collision slide rails 53; the four collision slide rail vehicles 53 are slidably mounted on the four slide rails 52 in a one-to-one correspondence manner, the slide rails 52 are sequentially divided into a vertical section, an arc-shaped section and a horizontal end from top to bottom, the vertical section is mainly used for accelerating the collision slide rail vehicles 53, the arc-shaped section is used for reversing and sliding the collision slide rail vehicles 53 from the vertical section to the horizontal end, the horizontal section is used for guiding the collision slide rail vehicles 53 to perform frontal collision relative to the tee pipe fitting, and the horizontal section is closest to the clamping groove positioning blocks 24 at the corresponding positions; four crash carriages 53 are fixedly attached to the pulling end of the pulling and lifting mechanism 54. The drawing and 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 and rotatably mounted on the fixed bracket 51 through a bearing, the axial direction of the winding shaft 542 is along the distribution direction of the four slide rails 52, and the shaft end at one side is fixed on the output shaft of the winding motor 541; the pulleys 521 which are horizontally and rotatably installed are symmetrically arranged on two sides of the vertical section of the slide rail 52 close to the top end, the traction rods 533 are symmetrically welded on two sides of the collision slide rail vehicle 53 perpendicular to the sliding direction, the lifting rope 543 is fixedly connected between the traction rods 533 and the winding shaft 542, the lifting rope 543 can be specifically a steel wire rope, reliable tensile strength can be guaranteed, the lifting rope 543 bypasses the pulleys 521 on the same side of the traction rods 533 connected with the lifting rope 543, and the pulleys 521 guide the lifting rope 543.
The collision trolley 53 is used for directly colliding the tee pipe, and the magnitude of the collision force is mainly determined by the magnitude of the kinetic energy obtained by the collision trolley 53, and the magnitude of the kinetic energy is related to the mass and the speed, because the mass of the collision trolley 53 is constant, obviously, when the speed of the collision trolley 53 is higher, the obtained kinetic energy is higher, and the corresponding collision force is higher. In this embodiment, the pulling and lifting mechanism 54 is used to synchronously lift the heights of the four collision trolleys 53, specifically, the winding shaft 542 is driven to rotate by starting the winding motor 541, so that the winding shaft 542 synchronously winds all the lifting ropes 543, when winding, the lifting ropes 543 on both sides of the collision trolley 53 are matched to lift the collision trolley to a certain height, the more winding, the higher the lifting height of the collision trolley 53 and the greater the gravitational potential energy, it should be noted that the winding motor 541 is a self-locking motor, after the winding motor 541 finishes self-locking, the collision trolley 53 will be locked at the corresponding height, when collision detection is performed, the winding motor 541 is started to unwind and is in a non-self-locking state, so that the collision trolley 53 is not limited by the pulling force of the lifting ropes 543, the sliding trolley 53 will follow the sliding rail 52, the gravitational potential energy of the sliding trolley 53 will be gradually converted into kinetic energy, and the speed is higher, and when sliding down to the horizontal section, the hammer 531 will directly collide at the center positions of the three pipe orifices of the tee pipe fittings, thereby completing the collision trolley 53. The height of the slide rail 52 is sufficient to provide the kinetic energy required for detection of an impact on the slide rail car 53.
After the tee pipe fitting is completely positioned and fixed, synchronous collision detection can be carried out on the three tee pipe fittings, in the actual detection process, multiple collision tests are sequentially completed according to the sequence from low to high of the height of the sliding rail 52 vehicle, after each collision test is completed, the state of each tee pipe fitting is observed, when only one tee pipe fitting is required to generate collision and fracture, follow-up detection can be stopped, and the collision force detected at the time can be directly read according to the data of the collision force reflected on the collision force digital display instrument 13 at the moment.
After the intensity of a batch of three tee pipe fittings is detected, the three tee pipe fittings can be detached, the detached tee pipe fittings can be rapidly detached 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 obtained and is used as the intensity value of the tee pipe fitting with the detected type.
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 tee pipe fittings in a plurality of clamping groove positioning blocks 24, and enabling the central shaft of a main pipe port of each tee pipe fitting to be coincident and aligned with the central shafts of main pipe inserted rods 315 on two sides through height adjustment of the clamping groove positioning devices 2.
S2, inserting the branch pipe inserted rod 44 into the branch pipe connecting end port of the three-way pipe fitting through the branch pipe port positioning device 4, and clamping the three-way pipe fitting between the pressing disc 441 and the clamping groove positioning block 24.
And S3, inserting the main pipe inserted bar 315 into the main pipe connecting end port of the three-way pipe fitting through the main pipe port positioning device 3.
And S4, sequentially lifting the heights of the collision slide rail cars 53 by drawing the lifting mechanisms 54 according to the sequence from low to high, performing collision detection on the tee pipe fittings at different heights, and recording collision force data detected at the time when one tee pipe fitting is damaged and broken.
And S5, carrying out repeated strength detection tests in multiple batches, and taking the average value of multiple times of collision force detection as the strength value of the tee pipe fitting of the detected type.
It should be understood by those skilled in the art that the modifications can be implemented by combining the prior art and the above embodiments, and the detailed description is omitted here. Such variations do not affect the essence of the present invention, and are not described herein.
The above description is that of the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, in which devices and structures not described in detail are understood to be implemented in a manner that is conventional in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be modified, without departing from the spirit of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention, unless the technical essence of the present invention is not departed from the content of the technical solution of the present invention.
Claims (8)
1. The utility model provides a tee bend pipe fitting intensity check out test set which 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 the table top of the detection workbench (1), and a main pipe orifice positioning device (3), a branch pipe orifice positioning device (4) and an impact 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 mode and can penetrate through the table top of the detection workbench (1), the clamping groove positioning blocks (24) are uniformly distributed in the horizontal linear direction, and when the three-way pipe fittings are placed in the clamping groove positioning blocks (24) in a one-to-one correspondence mode, main pipe openings of the three-way pipe fittings are axially overlapped; the main pipe orifice positioning device (3) comprises a plurality of oppositely-inserted positioning tables (31) which are linearly distributed along a plurality of clamping groove positioning blocks (24) and uniformly distributed at intervals with the plurality of clamping groove positioning blocks (24), the oppositely-inserted positioning tables (31) are distributed on two sides of each clamping groove positioning block (24), two main pipe insertion rods (315) driven in opposite directions and synchronous are symmetrically arranged on the oppositely-inserted positioning tables (31), and the symmetrical directions of the two main pipe insertion rods (315) are along the distribution directions of the oppositely-inserted positioning tables (31); the main pipe orifice positioning device (3) further comprises a forward and backward driving mechanism (32) which is used for synchronously driving the plurality of opposite insertion positioning tables (31) and enabling two main pipe inserted rods (315) in each opposite insertion positioning table (31) to move in the synchronous direction; the branch pipe orifice positioning device (4) comprises a plurality of branch pipe inserted rods (44) which are vertically driven to lift and are vertically and oppositely arranged in one-to-one correspondence with the plurality of clamping groove positioning blocks (24);
the collision force application device (5) comprises collision slide rail vehicles (53) which are more than the clamping groove positioning blocks (24) in number and are used for colliding three-way pipe fittings, collision force digital display instruments (13) are fixedly mounted on the detection workbench (1), one of the collision slide rail vehicles (53) is arranged corresponding to the collision force digital display instrument (13), and the rest collision slide rail vehicles (53) are arranged corresponding to the clamping groove positioning blocks (24) in a one-to-one mode.
2. The tee pipe strength testing apparatus of claim 1, wherein: the collision force application device (5) further comprises a fixed support (41) fixed on the detection workbench (1), a plurality of slide rails (42) fixed on the fixed support (41), and a traction lifting mechanism (54) assembled on the fixed support (41) and used for synchronously pulling and lifting all collision slide rail vehicles (53); the plurality of collision slide rail vehicles (53) are correspondingly arranged on the plurality of slide rails (42) in a sliding manner one by one, the slide rails (42) are sequentially divided into a vertical section, an arc-shaped section and a horizontal end from top to bottom, and the horizontal section is closest to the clamping groove positioning block (24) at the corresponding position; the collision slide rail vehicles (53) are all fixedly connected to the drawing end of the drawing and lifting mechanism (54).
3. The tee pipe strength testing apparatus of claim 2, wherein: an impact hammer (531) is horizontally installed on one side, facing the clamping groove positioning block (24), of the collision slide rail car (53) in a sliding mode, a damping spring (532) is sleeved on the impact hammer (531), and two ends of the damping spring (532) are fixed to the impact hammer (531) and the collision slide rail car (53) respectively.
4. The tee pipe strength testing apparatus of 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 and rotatably mounted on the fixed bracket (41), the axial direction of the winding shaft (542) is along the distribution direction of the plurality of slide rails (42), and one shaft end is fixed on the output shaft of the winding motor (541); the utility model discloses a take-up pulley, including the vertical section of slide rail (42), be close to the both sides position symmetry on top on the vertical section of slide rail (42) and be provided with pulley (521) that the horizontal rotation was installed, clash slide rail car (53) and be located the bilateral symmetry of perpendicular to slip direction and be provided with tractive pole (533), tractive pole (533) with fixedly connected with between rolling axle (542) lifts rope (543), it is connected with to lift rope (543) walk around with it pull pole (533) homonymy pulley (521).
5. The tee pipe strength testing apparatus of claim 1, wherein: the opposite-inserting positioning table (31) further comprises a rotary support (311) and a bidirectional screw rod (312) horizontally and rotatably mounted on the rotary support (311), a plurality of guide rods (313) are horizontally and fixedly mounted on two sides of the rotary support (311) in the axial direction of the bidirectional screw rod (312), a stroke plate (314) is horizontally and slidably mounted on the guide rods (313) on the same side, the bidirectional screw rod (312) penetrates through the stroke plate (314), two main pipe insertion rods (315) are detachably mounted on the outer end surfaces of the two stroke plates (314) in a one-to-one correspondence mode, and are in threaded connection with two thread sections of the bidirectional screw rod (312) in a one-to-one correspondence mode; the advancing and retreating driving mechanism (32) is used for driving the bidirectional lead screw (312) to rotate.
6. The tee pipe strength testing apparatus of 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 avoiding grooves (242) in two opposite side positions in an extending mode, and the V-shaped positioning grooves (241) and the avoiding grooves (242) are arranged in an inserting mode.
7. The tee pipe strength testing apparatus of claim 1, wherein: the branch pipe inserted bar (44) is detachably mounted, and the connecting end of the branch pipe inserted bar (44) is a pressing disc (441) capable of pressing the end of the branch pipe connecting end of the three-way pipe fitting.
8. The tee pipe strength testing apparatus of claim 1, wherein: be responsible for inserted bar (315) and branch pipe inserted bar (44) are cylindricly, just be responsible for inserted bar (315) cylinder side and branch pipe inserted bar (44) cylinder side all wraps up the rubber layer.
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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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| Application Number | Priority Date | Filing Date | Title |
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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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| CN115752995B (en) | 2023-05-30 |
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