CN115235984B - Single-degree-of-freedom testing device for output end of metal hose - Google Patents
Single-degree-of-freedom testing device for output end of metal hose Download PDFInfo
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- CN115235984B CN115235984B CN202211165453.0A CN202211165453A CN115235984B CN 115235984 B CN115235984 B CN 115235984B CN 202211165453 A CN202211165453 A CN 202211165453A CN 115235984 B CN115235984 B CN 115235984B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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Abstract
The invention discloses a single degree of freedom testing device for an output end of a metal hose, which comprises a testing frame, wherein two testing units are arranged on the testing frame in a sliding fit mode, the two testing units are respectively connected with two ends of the metal hose, and the two ends of the metal hose can deviate or follow the testing units, and the single degree of freedom testing device also comprises: the simulation unit is installed between test jig and test unit for to the test unit on the metal collapsible tube shakes, connects metal collapsible tube's both ends respectively through the test unit to simulate metal collapsible tube's vibrations environment in the in-service use through the simulation unit, reachs the metal collapsible tube experimental data under the condition that takes place skew or follow-up, more accurate production quality who reachs metal collapsible tube.
Description
Technical Field
The invention relates to the technical field of pipe fittings, in particular to a single-degree-of-freedom testing device for an output end of a metal hose.
Background
The dynamic characteristic parameters of the metal hose serving as a non-supporting elastic element are mainly obtained by measurement through a test device, at present, in the pipeline design of the industries such as aerospace and nuclear power, a dynamic characteristic test method is limited to the fixed installation of the metal hose, the factors such as deviation and follow-up of the hose in actual use are not considered, and a corresponding follow-up test device is not provided.
The invention relates to the technical field of pipe fittings, in particular to a testing device for hose testing, which comprises a water containing frame, wherein a main testing device and an auxiliary testing device are respectively arranged at two ends of the water containing frame, the main testing device comprises a main testing frame, a movable frame, a front driving device, a rear driving device and an upper driving device, the front part of the front driving device and the rear driving device is connected with an inflation pipe, and the auxiliary testing device comprises an auxiliary testing frame, an auxiliary movable frame, an upper auxiliary driving device, an lower auxiliary driving device, an auxiliary rod and an auxiliary supporting block; during the use, locate the metal collapsible tube clamp between connecting rod and the auxiliary rod, promote the cylinder through the front and back and promote the connecting rod and move forward, compress tightly metal collapsible tube, later aerify in to metal collapsible tube through the gas tube, the rethread drives actuating cylinder from top to bottom and promotes and remove the whole pushing down of frame, and auxiliary cylinder drives supplementary removal frame simultaneously and pushes down, sends into metal collapsible tube flourishing water frame in, can test, and the measuring accuracy is high like this, and the test is convenient.
The metal hose testing equipment in the prior art can only detect the air tightness or the tensile property of the metal hose, the metal hose is fixedly installed during detection, and factors such as the offset of the metal hose in actual use are not simulated, so that the detection result of the metal hose is inaccurate.
Disclosure of Invention
The invention aims to provide a single-degree-of-freedom testing device for an output end of a metal hose, which is used for solving the problems in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a metal collapsible tube output single degree of freedom testing arrangement, includes the test jig, install two test unit through sliding fit's mode on the test jig, two the test unit is used for connecting respectively metal collapsible tube's both ends to metal collapsible tube's both ends can take place skew or follow-up on the test unit, still include:
and the simulation unit is arranged between the test frame and the test unit and used for vibrating the metal hose on the test unit.
Foretell, the test unit includes the vibrating mass, be provided with L type circular slot in the vibrating mass, install the slip pipe through sliding fit's mode in the horizontal segment of L type circular slot, the connection flange dish is installed to the part that the slip pipe is located the vibrating mass outside, keep away from vertical section one side in L type circular slot in the horizontal segment of L type circular slot and seted up the square groove, a plurality of logical grooves have been seted up to the symmetry on the both sides inner wall in square groove, vertical section one side that is close to L type circular slot in the horizontal segment of L type circular slot is provided with ellipsoid type sealing washer, its radial cross-section is oval for ellipsoid type to the ellipsoid type of ellipsoid type sealing washer, the inside of ellipsoid type sealing washer is sealed liquid, the slip pipe is located L type circular slot and serves and is provided with ring seal on the outer wall, and ring seal mutually supports the use with ellipsoid type sealing washer.
And the connecting flange plate is connected with the outer wall of the vibrating block through the tension and compression bidirectional force sensor.
In the above, an auxiliary sealing ring is arranged on part of the inner wall between the square groove in the vibration block and the ellipsoidal sealing ring, and the auxiliary sealing ring and the sliding circular tube are matched with each other.
It is foretell, install two carry over pinch rolls through normal running fit's mode symmetry in the square groove, the vibrating mass is located and installs two propulsion cylinders, two on the both sides outer wall of L type circular slot propulsion cylinder output all installs the propulsion plate, and two draw-in grooves have been seted up to propulsion plate middle part symmetry, two fixture blocks are installed through sliding fit's mode symmetry in the draw-in groove, and the traction round bar is installed to carry over pinch roll one end, and the traction round bar runs through logical groove and installs in the fixture block of vibrating mass one side with normal running fit's mode, and the power round bar is installed to the carry over pinch roll other end, and the power round bar runs through the fixture block of square groove inner wall and vibrating mass opposite side and installs power gear, and two power gear that two carry over pinch rolls correspond mesh mutually, lie in power gear and install motor through the motor cabinet on the propulsion plate outer wall with one side, and the power motor output is connected on one of them power gear.
The one end that leads to the groove is the horizontal groove, and the other end that leads to the groove is the cambered surface groove, and the tip in cambered surface groove is to keeping away from one end bending each other.
The inner wall of each clamping groove is provided with a groove, and the inner wall of each groove is connected with the corresponding clamping block through a second spring rod.
The outer wall of the traction roller is evenly provided with a plurality of abutting grooves along the circumferential direction of the outer wall of the traction roller, friction blocks are installed in the abutting grooves in a sliding fit mode, and the friction blocks are connected with the inner walls of the abutting grooves through first spring rods.
In the above description, the pressure injection pipe is arranged at one end of the vibrating block, which is located at the vertical end of the L-shaped circular groove.
In the above, a non-contact displacement sensor is mounted on the portion of the test frame located between the two test units.
The invention has the beneficial effects that: connect respectively through the test unit at metal collapsible tube's both ends to simulate metal collapsible tube's vibrations environment in the in-service use through the analog unit, obtain metal collapsible tube in the experimental data under the condition that takes place the skew or follow-up, more accurate production quality who reachs metal collapsible tube.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of FIG. 1 of the present invention;
FIG. 3 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of the structure at M of FIG. 3 according to the present invention;
FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 2 according to the present invention;
FIG. 6 is an enlarged view of FIG. 5 at point N according to the present invention;
FIG. 7 is a schematic cross-sectional view taken at C-C of FIG. 2 according to the present invention;
FIG. 8 is a schematic cross-sectional view of an eccentric wheel according to the present invention;
FIG. 9 is a schematic perspective view of a simulation unit according to the present invention;
FIG. 10 is a schematic perspective view of a test unit according to the present invention;
FIG. 11 is a partial perspective view of a first view of a test unit according to the present invention;
fig. 12 is a schematic partial perspective view of a second viewing angle of the testing unit according to the present invention.
Description of reference numerals:
1. a test jig; 11. an adjustment groove; 12. a base plate; 2. a test unit; 21. vibrating the block; 22. an L-shaped circular groove; 23. sliding the circular tube; 24. connecting a flange plate; 25. a square groove; 26. a through groove; 261. a horizontal groove; 262. a cambered surface groove; 27. an ellipsoidal seal ring; 28. an annular seal ring; 29. a tension and compression bidirectional force sensor; 210. an auxiliary seal ring; 211. a traction roller; 212. propelling the cylinder; 213. a propulsion plate; 214. a card slot; 215. a clamping block; 216. a traction round bar; 217. a powered round bar; 218. a power gear; 219. a power motor; 220. a groove; 221. a second spring lever; 222. tightly pressing the groove; 223. a friction block; 224. a first spring lever; 225. injecting a pressure pipe; 3. an analog unit; 31. a U-shaped frame; 32. a circular through groove; 33. a sliding round bar; 34. a square frame; 35. a third spring; 36. vibrating the frame; 37. a fourth spring bar; 38. a hollow groove; 39. a vibration shaft; 310. a first bevel gear; 311. vibrating a motor; 312. a second bevel gear; 313. an eccentric wheel; 314. a U-shaped plate; 315. positioning a threaded rod; 316. sector filling cavities; 317. a baffle plate; 318. a cambered surface block; 4. a non-contact displacement sensor; 5. a linear reciprocating mechanism; 51. a lead screw; 52. a flat plate; 53. the motor is regulated.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 12, a single-degree-of-freedom testing apparatus for an output end of a metal hose provided in an embodiment of the present invention includes a testing jig 1, two testing units 2 are installed on the testing jig 1 in a sliding fit manner, the two testing units 2 are used to connect two ends of the metal hose respectively, and two ends of the metal hose can deviate or follow up on the testing units 2, and the single-degree-of-freedom testing apparatus further includes:
and the simulation unit 3 is arranged between the test frame 1 and the test unit 2, and is used for vibrating the metal hose on the test unit 2.
Specifically, two ends of a metal hose are respectively connected with two test units 2 through flange structures, that is, two ends of the metal hose are respectively connected with a flange pipe, the two flange pipes are connected with the two test units 2 in a one-to-one correspondence manner, so that the metal hose can deviate or follow up on the test units 2 (that is, the metal hose can slide or shake freely along with the simulated vibration of the simulation unit 3), the two test units 2 slide to positions to be detected on the test frame 1 (that is, the test units 2 slide to the test positions on the test frame 1, because the metal hose is connected with the test units 2, the difference of the positions of the two test units 2 on the test frame 1 brings the difference of the shapes of the metal hose, so that the tensile degree of the metal hose changes, which can lead to the change of the test result of the metal hose), the simulation unit 3 drives the metal hose on the test units 2 to simulate the vibration, so that the metal hose can simulate the vibration in the actual use process, so as to obtain more accurate test results, when a test unit 2 on the test frame 1 needs to regulate the sliding position of the test unit, the test result of the metal hose can obtain more accurate detection result, and the more accurate detection result of the invention: the test can be carried out when the metal hose deviates or follows up, and the prior art fixes the two ends of the metal hose and then carries out the test, but in the actual use process, the metal hose deviates or follows up to a certain extent along with the connection of the ends, so that the test result of the invention is more accurate.
Further, the testing unit 2 includes a vibrating block 21, an L-shaped circular groove 22 is provided in the vibrating block 21, a sliding circular tube 23 is installed in a sliding fit manner in a horizontal section (horizontal section, vertical section, azimuth horizontal, vertical is only relative to L, in an actual experiment, the L-shaped circular groove 22 is entirely horizontally arranged, or partially horizontally arranged), a connecting flange 24 is installed in a part of the sliding circular tube 23 located outside the vibrating block 21, a square groove 25 is opened on one side of a vertical section far from the L-shaped circular groove 22 in the horizontal section of the L-shaped circular groove 22, a plurality of through grooves 26 are symmetrically opened on inner walls of two sides of the square groove 25, an ellipsoidal seal ring 27 is provided on one side of the vertical section near the L-shaped circular groove 22 in the horizontal section of the L-shaped circular groove 22, that is, the ellipsoidal seal ring 27 is in the horizontal section of the ellipsoidal seal ring 27, that is, the radial section of the ellipsoidal seal ring 27 is elliptical seal ring, the sealing liquid inside the sliding circular groove 23 is provided with an annular seal ring 28, and the elliptical seal ring is connected with the elliptical seal ring 23 by sliding metal seal ring, and the elliptical seal ring 23 is connected with the elliptical seal ring by a metal sliding flange, and the elliptical seal ring 23, and the elliptical seal ring is connected with the elliptical seal ring by a sliding seal ring 23 in a sliding seal ring connected with the elliptical seal ring in a flexible tube, when the sliding circular tube 23 drives the annular sealing ring 28 to abut against and slide on the inner wall of the ellipsoidal sealing ring 27, the position of the sealing liquid in the ellipsoidal sealing ring 27 moves, so that the abutting position of the annular sealing ring 28 and the ellipsoidal sealing ring 27 is always in an inward concave type (that is, the annular sealing ring 28 extrudes the ellipsoidal sealing ring 27, and the ellipsoidal sealing ring 27 wraps the annular sealing ring 28), and the sealing performance between the annular sealing ring 28 and the ellipsoidal sealing ring 27 is better.
Further, connect between flange 24 and the vibrating mass 21 outer wall through drawing and pressing two-way force transducer 29 and be connected, specifically, when the analog unit 3 drives test unit 2 and simulates vibrations, metal collapsible tube can drive connecting flange 24 motion when skew or follow-up to certain skew or follow-up can take place between connecting flange 24 and the vibrating mass 21, through drawing and pressing two-way force transducer 29 can be accurate measure the change of the power between connecting flange 24 and the vibrating mass 21 when metal collapsible tube skew or follow-up, can obtain more accurate test result.
Further, be provided with supplementary sealing washer 210 on the partial inner wall between square groove 25 in the vibrating mass 21 and the ellipsoid type sealing washer 27, and supplementary sealing washer 210 uses with mutually supporting between the slip pipe 23, and is specific, when slip pipe 23 slides in L type circular slot 22, supplementary sealing washer 210 can carry out the secondary to sliding pipe 23 and seal, has further promoted the sealed effect between slip pipe 23 and the L type circular slot 22.
Further, two traction rollers 211 are symmetrically installed in the square groove 25 in a rotation fit manner, two propulsion cylinders 212 are installed on outer walls of two sides of the L-shaped circular groove 22 of the vibration block 21, a propulsion plate 213 is installed at output ends of the two propulsion cylinders 212, two clamping grooves 214 are symmetrically formed in the middle of the propulsion plate 213, two clamping blocks 215 are symmetrically installed in the two clamping grooves 214 in a sliding fit manner, a traction circular rod 216 is installed at one end of each traction roller 211, the traction circular rod 216 penetrates through the through groove 26 and is installed in the clamping block 215 at one side of the vibration block 21 in a rotation fit manner, a power circular rod 217 is installed at the other end of each traction roller 211, the power circular rod 217 penetrates through the inner wall of the square groove 25 and the clamping block 215 at the other side of the vibration block 21 and is provided with a power gear 218, the two power gears 218 corresponding to the two traction rollers 211 are engaged with each other, and a power motor 219 is installed on the outer wall of the propulsion plate 213 at the same side of the power gear 218 through a motor seat, an output end of the power motor 219 is connected to one of the power gears 218 (i.e., is coaxial with one of the power circular rods 217), specifically, (1) when the sliding circular tube 23 needs to be adjusted to a position in the L-shaped circular slot 22, the power motor 219 is started (the power motor 219 is a forward and reverse rotation motor) to drive one of the power gears 218 to rotate, the two power gears 218 are mutually driven in a gear engagement manner, so that the two power gears 218 respectively drive the two power circular rods 217 to rotate, the two power circular rods 217 respectively drive the two traction rollers 211 to rotate in opposite directions (i.e., the rotation directions of the two traction rollers 211 are opposite), so that the traction rollers 211 drive the sliding circular tube 23 to slide in the L-shaped circular slot 22, and the sliding circular tube 23 slides to a proper position in the L-shaped circular slot 22 (i.e., the sliding circular tube 23 slides in the L-shaped circular slot 22) To a predetermined detection position), when the sliding circular tube 23 slides to a proper position in the L-shaped circular groove 22, the power motor 219 is turned off; (2) When the sliding circular tube 23 needs to be in a fixed state in the L-shaped circular groove 22, due to a certain positioning function of the power motor 219, the traction roller 211 is in a static state and is clamped by friction between the traction roller 211 and the sliding circular tube 23, so that the sliding circular tube 23 is in a static positioning state in the L-shaped circular groove 22; (3) When the sliding circular tube 23 needs to be shifted or follow up in the L-shaped circular groove 22, the pushing cylinder 212 is started to drive the pushing plate 213 to move, the pushing plate 213 drives the fixture block 215 to move, the fixture block 215 drives the pulling circular rod 216 and the power circular rod 217 to slide along the track of the through groove 26 (namely, the pulling circular rod 216 and the power circular rod 217 slide from the horizontal groove 261 part of the through groove 26 to the arc groove 262 part, and the arc groove 262 and the horizontal groove 261 are described in detail later), so that the pulling circular rod 216 and the power circular rod 217 slide towards the ends far away from each other, the pulling circular rod 216 and the power circular rod 217 drive the fixture block 215 to slide towards the ends far away from each other in the clamping groove 214 (namely, the fixture blocks 215 slide towards the ends far away from each other in each clamping groove 214, see fig. 11 and 12), the pulling circular rod 216 and the power circular rod 217 drive the pulling roller 211 to slide towards the sides far away from each other, so that the pulling roller 211 is not contacted with the sliding circular tube 23 any more, so that the pulling roller 211 is released from the positioning of the sliding circular rod 33, and the sliding circular tube 23 can be shifted or follow up in the L-shaped circular groove 22; (4) When the pulling roller 211 needs to clamp and position the sliding round tube 23 again, the pushing cylinder 212 is activated to drive the pushing plate 213 to move (that is, when the sliding round tube 23 can shift or follow up in the L-shaped round slot 22, the pushing cylinder 212 drives the pushing plate 213 to move in an opposite direction), the pushing plate 213 drives the pulling round rod 216 and the power round rod 217 to slide along the track of the through slot 26 through the fixture block 215 (that is, the pulling round rod 216 and the power round rod 217 slide from the arc groove 262 part to the horizontal groove 261 part of the through slot 26, the arc groove 262 and the horizontal groove 261 are described in detail later), so that the pulling round rod 216 and the power round rod 217 drive the fixture block 215 to slide toward one end of each other in the slot 214 (that the fixture block 215 slides toward one end of each slot 214), the pulling round rod 216 and the power round rod 217 drive the pulling roller 211 to slide toward one side of each other, so that the pulling roller 211 abuts against the sliding round tube 23 again, so that the pulling roller 211 positions the sliding round rod 33, and the sliding round tube 23 performs positioning operation in the L-shaped round slot 22.
Further, one end of the through groove 26 is a horizontal groove 261, the other end of the through groove 26 is an arc-shaped groove 262, and the ends of the arc-shaped groove 262 are bent to the ends away from each other, specifically, (1) when the sliding circular tube 23 is required to be able to shift or follow in the L-shaped circular groove 22, the fixture block 215 drives the traction circular rod 216 and the power circular rod 217 to slide along the track of the through groove 26, that is, the traction circular rod 216 and the power circular rod 217 slide from the horizontal groove 261 at one end of the through groove 26 to the arc-shaped groove 262 at the other end of the through groove 26, since the ends of the arc-shaped grooves 262 are bent to the ends away from each other, each traction circular rod 216 and each power circular rod 217 slide to the ends away from each other, the traction circular rod 216 and each power circular rod 217 drive the fixture block 215 in the same through groove 214 to slide to the ends away from each other (see fig. 11 and 12), and the traction circular rod 216 and the power circular rod 217 drive the traction roller 211 to slide to the sides away from each other, so that the traction roller 211 releases the positioning of the sliding circular rod 33; (2) When the traction roller 211 is to clamp and position the sliding circular tube 23 again, the pushing plate 213 drives the traction circular rod 216 and the power circular rod 217 to slide along the track of the through groove 26 through the fixture block 215, that is, the traction circular rod 216 and the power circular rod 217 slide from the arc groove 262 at one end of the through groove 26 to the horizontal groove 261 at the other end of the through groove 26, so that the traction circular rod 216 and the power circular rod 217 drive the traction roller 211 to abut against the sliding circular tube 23 again, and the sliding circular tube 23 is positioned in the L-shaped circular groove 22.
Further, a groove 220 is formed in an inner wall of each of the slots 214, the inner wall of each groove 220 is connected with the fixture block 215 through a second spring rod 221, and specifically, when the traction round rods 216 and the power round rods 217 slide towards ends away from each other, the traction round rods 216 and the power round rods 217 drive the fixture block 215 to slide towards ends away from each other in the slots 214 (the fixture block 215 slides towards the ends away from each other in each slot 214), and at this time, the fixture block 215 extrudes the second spring rod 221 to a certain extent, so that the second spring rod 221 is in a compressed state; when the traction round rod 216 and the power round rod 217 drive the fixture block 215 to slide towards one end close to each other in the clamping groove 214, under the resilience action of the second spring rod 221, the second spring rod 221 drives the fixture block 215 to slide towards one end close to each other in the clamping groove 214, so that the traction round rod 216 and the power round rod 217 drive the traction roller 211 to abut against the sliding round tube 23 again.
Preferably, a plurality of abutting grooves 222 are uniformly formed in the outer wall of the traction roller 211 along the circumferential direction of the traction roller, a friction block 223 is installed in the abutting groove 222 in a sliding fit manner, the friction block 223 is connected with the inner wall of the abutting groove 222 through a first spring rod 224, specifically, when the traction roller 211 drives the sliding circular tube 23 to slide in the L-shaped circular groove 22, the traction roller 211 drives the sliding circular tube 23 to slide in the L-shaped circular groove 22 through the friction block 223, and through the contact between the friction block 223 and the sliding circular tube 23, the friction between the traction roller 211 and the sliding circular tube 23 can be improved, so that the traction roller 211 is prevented from idling when driving the sliding circular tube 23 to slide; when the sliding circular tube 23 needs to be in a fixed state in the L-shaped circular groove 22, the friction force between the traction roller 211 and the sliding circular tube 23 is increased by the friction force between the first spring rod 224 and the friction block 223 on the sliding circular tube 23, so that the sliding circular tube 23 is kept in a static state.
Further, last and the vertical end one end that is located L type circular slot 22 of vibrating mass 21 is provided with injection pipe 225, and is concrete, when simulation unit 3 drives metal collapsible tube through test unit 2 and simulates vibrations, will detect liquid (also the metal collapsible tube carries out the liquid of carrying in the in-service use process) and carry the metal collapsible tube through slip pipe 23 through injection pipe 225 in, simulate the transport of the detection liquid of metal collapsible tube when shaking to obtain more accurate testing result.
Further, non-contact displacement sensor 4 is installed to the part that lies in between two test unit 2 on test jig 1, and is concrete, when simulation unit 3 drives metal collapsible tube through test unit 2 and simulates vibrations, detects the displacement that metal collapsible tube takes place when simulating vibrations through non-contact displacement sensor 4 to guarantee the accuracy of testing result.
Further, the simulation unit 3 comprises a U-shaped frame 31, two circular through grooves 32 are formed in two vertical sections of the U-shaped frame 31, sliding round rods 33 are installed in the circular through grooves 32 in a sliding fit mode, the sliding round rods 33 are connected through a square frame 34, a third spring 35 is sleeved on the outer wall of each sliding round rod 33 and located between the square frame 34 and the inner wall of the two vertical sections of the U-shaped frame 31, a vibration frame 36 is installed in the square frame 34 in a sliding fit mode, parts, located between two end faces of the part, located in the square frame 34, of the vibration frame 36 and the inner wall of the square frame 34 are connected through a plurality of uniformly arranged fourth spring rods 37, a vibration block 21 is fixedly installed at the top end of the vibration frame 36, a hollow groove 38 is formed in the part, located in the square frame 34, of the vibration frame 36, a vibration shaft 39 is installed in the hollow groove 38 in a rotating fit mode, a first bevel gear 310 is arranged on the part of the vibration shaft 39 positioned in the hollow groove 38, a vibration motor 311 is arranged on the inner wall of the hollow groove 38, a second bevel gear 312 is arranged at the output end of the vibration motor 311, the second bevel gear 312 and the first bevel gear 310 are engaged with each other for use, two ends of the vibration shaft 39 both penetrate through the hollow groove 38 and are provided with eccentric wheels 313, a U-shaped plate 314 is arranged on the outer wall of one side of the U-shaped frame 31 (namely, on the outer wall of the same side of one of the eccentric wheels 313), a positioning threaded rod 315 is arranged on the U-shaped plate 314 in a thread matching manner, the positioning threaded rod 315 penetrates one end of the U-shaped plate 314 and is arranged on the outer wall of the square frame 34 in a thread matching manner, concretely, initially, because the positioning threaded rod 315 is arranged in the U-shaped plate 314 and on the outer wall of the square frame 34 in a thread matching manner, and the U-shaped plate 314 is arranged on the outer wall of the U-shaped frame 31, when the simulation unit 3 is required to provide simulation vibration for the detection unit, a worker rotates the positioning threaded rod 315 by using a tool, so that the positioning threaded rod 315 rotates out of the U-shaped plate 314, the positioning threaded rod 315 releases the positioning operation on the square frame 34, the vibration motor 311 (the vibration motor 311 is a forward and reverse rotation motor) is started to drive the second bevel gear 312 to rotate, the second bevel gear 312 drives the first bevel gear 310 to rotate in a gear meshing manner, the first bevel gear 310 drives the vibration shaft 39 to rotate, the vibration shaft 39 drives the eccentric wheel 313 (a disc with a shifted circle center, namely similar to a cam) to rotate, the gravity center of the eccentric wheel 313 changes at any time, so that the eccentric wheel 313 drives the vibration frame 36 to slide in the square frame 34 through the vibration shaft 39, and under the reciprocating vibration action of the fourth spring rod 37, the vibration frame 36 vibrates in the square frame 34, and at the same time, the vibration generated during the reciprocating sliding of the third spring 35 vibrates the square frame 34 in the sliding direction of the sliding round rod 33, so that the square frame 34 drives the vibration block 21 to vibrate, the vibration block 21 drives the metal hose to vibrate, and the vibration of the metal hose in the actual use process is simulated, so as to obtain a more accurate test result, (1) when the simulation unit 3 at one end (such as the left end) of the metal hose needs to vibrate and the simulation unit 3 at the other end (such as the right end) of the metal hose does not need to vibrate, the positioning threaded rod 315 at one end (such as the left end) needing to vibrate is turned out of the U-shaped plate 314, and the positioning threaded rod 315 at the other end (such as the right end) on the simulation unit 3 continues to be in the square frame 34, positioning the square frame 34; (2) When the simulation units 3 at two ends of the metal hose need to vibrate, the positioning threaded rods 315 on the simulation units 3 need to be rotated out of the U-shaped plate 314, so that the simulation units 3 can vibrate.
Preferably, a sector filling cavity 316 is formed in a side wall of the eccentric wheel 313, a baffle 317 is arranged on the sector filling cavity 316, a plurality of arc blocks 318 with different masses are uniformly placed in the sector filling cavity 316, specifically, when the eccentric wheel 313 is driven by the vibration shaft 39 to rotate, and due to the eccentric design of the eccentric wheel 313, the gravity center of the eccentric wheel 313 changes at any time in the rotating process, under the condition that the rotating speed of the vibration motor 311 is constant, the frequencies when the eccentric wheel 313 rotates and drives the square frame 34 to vibrate are different, when the vibration frequency of the square frame 34 needs to be adjusted and driven by the eccentric wheel 313 to change, only the number of the arc blocks 318 in the sector filling cavity 316 needs to be changed, the overall mass of the eccentric wheel 313 is changed by changing the number of the arc blocks 318, so as to achieve the change of the vibration frequency of the square frame 34, so that the metal hose can be tested under various vibration frequencies, and the accuracy of the test result of the metal hose is improved.
Further, two adjusting grooves 11 have been seted up on test jig 1, bottom plate 12 is installed through sliding fit's mode in the adjusting groove 11, U type frame 31 is installed to bottom plate 12 one side, bottom plate 12 opposite side is connected with linear reciprocating motion mechanism 5, linear reciprocating motion mechanism 5 is used for driving the bottom plate 12 slip in adjusting groove 11, concretely, before simulation unit 3 drives metal collapsible tube and simulates vibrations, through adjusting the position of bottom plate 12 in adjusting groove 11, make the difference of metal collapsible tube's tensile condition, make metal collapsible tube can test the operation under different situations, further increase metal collapsible tube's test kind, so that obtain more accurate test result.
Preferably, the linear reciprocating mechanism 5 includes a screw 51, the screw 51 is installed on the bottom plate 12 in a thread fit manner, flat plates 52 are installed on two sides of the adjustment groove 11 on the test rack 1, two ends of the screw 51 are installed on the flat plates 52 in a rotation fit manner, two adjustment motors 53 are installed on the flat plates 52 on one side of the adjustment groove 11, an output end of each adjustment motor 53 is connected with the screw 51, specifically, when the position of the bottom plate 12 in the adjustment groove 11 needs to be adjusted, the adjustment motors 53 are started (the adjustment motors 53 are forward and reverse rotating motors) to drive the screw 51 to rotate, the screw 51 drives the bottom plate 12 to slide in the adjustment groove 11 in a thread engagement manner, when the bottom plate 12 slides to a proper position (that is, the metal hose needs to be tested), the adjustment motors 53 are closed, and the screw 51 has a certain positioning effect, so that the bottom plate 12 cannot slide when the simulation unit 3 vibrates.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. The utility model provides a single degree of freedom testing arrangement of metal collapsible tube output, includes the test jig, install two test units through sliding fit's mode on the test jig, two the test unit is used for connecting respectively metal collapsible tube's both ends to metal collapsible tube's both ends can take place skew or follow-up on the test unit, its characterized in that still includes:
the simulation unit is arranged between the test frame and the test unit and is used for vibrating the metal hose on the test unit;
the testing unit comprises a vibrating block, an L-shaped circular groove is formed in the vibrating block, a sliding circular pipe is arranged in a horizontal section of the L-shaped circular groove in a sliding fit mode, a connecting flange is arranged at the part, located on the outer side of the vibrating block, of the sliding circular pipe, a square groove is formed in one side, far away from the vertical section of the L-shaped circular groove, of the horizontal section of the L-shaped circular groove, a plurality of through grooves are symmetrically formed in the inner walls of the two sides of the square groove, an ellipsoidal sealing ring is arranged on one side, close to the vertical section of the L-shaped circular groove, of the horizontal section of the L-shaped circular groove, the ellipsoidal shape of the ellipsoidal sealing ring means that the radial section of the ellipsoidal sealing ring is elliptical, sealing liquid is arranged inside the ellipsoidal sealing ring, an annular sealing ring is arranged on the outer wall of one end, located in the L-shaped circular groove, of the sliding circular groove, and the annular sealing ring and the ellipsoidal sealing ring are matched with each other for use; the connecting flange plate is connected with the outer wall of the vibrating block through a tension and compression bidirectional force sensor, an auxiliary sealing ring is arranged on part of the inner wall between the square groove in the vibrating block and the ellipsoidal sealing ring, the auxiliary sealing ring and the sliding circular tube are matched with each other for use, two ends of the metal hose are respectively connected with the connecting flange plate through flanges, so that the metal hose can be connected with the sliding circular tube through the flanges and the connecting flange plate, the sliding circular tube can slide in the L-shaped circular groove, and two ends of the metal hose can freely shift or follow up;
the simulation unit includes U type frame, two circle threading grooves have all been seted up on two vertical sections of U type frame, all install the slip pole through sliding fit's mode in each circle threading groove, be connected through a square frame between each slip pole, the slip pole outer wall just is located and is equipped with the third spring between two vertical section inner walls of square frame and U type frame, install the vibrations frame through sliding fit's mode in the square frame, the part between two terminal surfaces of the part that the vibrations frame is located the square frame and the square frame inner wall is connected through a plurality of fourth spring-beams that evenly set up, vibrations frame top fixed mounting has the vibrating mass, the hollow groove has been seted up to the part that the vibrations frame is located the square frame, the vibrations axle is installed through normal running fit's mode in the hollow groove, first bevel gear is installed to the epaxial part that is located the hollow groove of vibrations, install the shock dynamo on the hollow groove inner wall, second bevel gear is installed to the motor output, and intermeshing uses between second bevel gear and the first bevel gear, the vibrations axle both ends all run through the hollow groove and install the U type frame, be located the U type frame one end on the outer wall of U type frame and install the screw-thread formula mode through the U type threaded rod, the U type threaded rod runs through the screw-plate cooperation mode.
2. The single-degree-of-freedom testing device for the output end of the metal hose as claimed in claim 1, wherein two traction rollers are symmetrically installed in the square groove in a rotation fit manner, the vibrating block is located on outer walls of two sides of the L-shaped circular groove and provided with two propulsion cylinders, the output ends of the two propulsion cylinders are provided with propulsion plates, two clamping grooves are symmetrically formed in the middle of the propulsion plates, two clamping blocks are symmetrically installed in the clamping grooves in a sliding fit manner, a traction round rod is installed at one end of each traction roller and penetrates through the through groove and is installed in the clamping block on one side of the vibrating block in a rotation fit manner, a power round rod is installed at the other end of each traction roller and penetrates through the inner wall of the square groove and the clamping block on the other side of the vibrating block and is provided with a power gear, two power gears corresponding to the two traction rollers are meshed, a motor is installed on the outer wall of the propulsion plate located on the same side of the power gear through a motor base, and the output end of the power motor is connected to one power gear.
3. The single-degree-of-freedom testing device for the output end of the metal hose as claimed in claim 2, wherein one end of the through groove is a horizontal groove, the other end of the through groove is a cambered groove, and the ends of the cambered groove are bent towards the ends away from each other.
4. The single-degree-of-freedom testing device for the output end of the metal hose as claimed in claim 2, wherein each of the inner walls of the slots is provided with a groove, and the inner wall of the groove is connected with the fixture block through a second spring rod.
5. The single-degree-of-freedom testing device for the output end of the metal hose as claimed in claim 2, wherein the outer wall of the traction roller is uniformly provided with a plurality of abutting grooves along the circumferential direction, friction blocks are arranged in the abutting grooves in a sliding fit manner, and the friction blocks are connected with the inner walls of the abutting grooves through first spring rods.
6. The single-degree-of-freedom testing device for the output end of the metal hose as claimed in claim 1, wherein a pressure injection pipe is arranged at one end of the vibrating block, which is located at the vertical end of the L-shaped circular groove.
7. The single-degree-of-freedom testing device for the output end of the metal hose as claimed in claim 1, wherein a non-contact displacement sensor is mounted on a portion of the testing frame located between the two testing units.
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| CN202211165453.0A CN115235984B (en) | 2022-09-23 | 2022-09-23 | Single-degree-of-freedom testing device for output end of metal hose |
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