CN112763354A - High-low temperature bending test device for pipe - Google Patents
High-low temperature bending test device for pipe Download PDFInfo
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- CN112763354A CN112763354A CN202011597508.6A CN202011597508A CN112763354A CN 112763354 A CN112763354 A CN 112763354A CN 202011597508 A CN202011597508 A CN 202011597508A CN 112763354 A CN112763354 A CN 112763354A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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Abstract
The invention belongs to the field of pipe testing, and discloses a high-low temperature bending test device for a pipe, which comprises a high-low temperature test box, a support frame, a locking pipe fitting and a roller; the support frame is arranged in the high-low temperature test box; the locking pipe fitting is arranged on the support frame and used for fixing a pipe; the roller is arranged on the support frame and located below the locking pipe fitting, and the roller can move in a reciprocating mode along a first direction and is used for bending or loosening a pipe extending out of the bottom of the locking pipe fitting. By combining the high-low temperature cycle test and the bending fatigue test, compared with the traditional test method, the test device has the advantages of short test period, capability of reflecting the real use performance of the pipe, controllable test conditions, simplicity in operation and stable test process.
Description
Technical Field
The invention relates to the field of pipe testing, in particular to a high-low temperature bending test device for a pipe.
Background
TPU (thermoplastic polyurethane elastomer rubber) pneumatic tubes have wide application in automotive upholsteries, which are key connecting pieces for connecting waist supports and airbags in automobile seats. Therefore, certain performance requirements are required for the hardness, the bursting performance, the bending resistance, the aging performance, the low-temperature performance, the fatigue performance and the like of the TPU pneumatic pipe. At present, the above performances of the TPU pneumatic pipe are respectively tested on each single performance through related experimental equipment. However, in the actual use process of the TPU pneumatic pipe, each condition does not exist independently, but the existing test mode is a static process, so that the real use condition of the TPU pneumatic pipe is difficult to simulate, and the real performance of the TPU pneumatic pipe cannot be well reflected.
Disclosure of Invention
The invention aims to provide a high-low temperature bending test device for a pipe, which can simultaneously give consideration to the test of temperature and bending fatigue, is simple to operate and stable in test process, and can test the real performance of the pipe.
The technical scheme provided by the invention is as follows:
a high and low temperature bending test device for a pipe comprises:
a high and low temperature test chamber;
the support frame is arranged in the high-low temperature test box;
the locking pipe fitting is arranged on the support frame and used for fixing a pipe;
the roller is arranged on the support frame and located below the locking pipe fitting, and the roller can move in a reciprocating mode along the first direction and is used for bending or loosening the pipe extending out of the bottom of the locking pipe fitting.
Further preferably, the lock pipe fitting includes lock pipe piece and guide bar, the guide bar sets up the below of lock pipe piece, the guide bar with gyro wheel parallel arrangement, lock pipe piece is used for fixed tubular product, the surface of guide bar is equipped with the fluting with the tubular product looks adaptation that corresponds for hold follow the tubular product that lock pipe piece bottom stretches out.
Further preferably, a mounting hole for mounting a pipe is formed in the pipe locking block, the mounting hole penetrates through the pipe locking block in the height direction, and the mounting hole and the groove are correspondingly formed.
Further preferably, the pipe locking device further comprises a fastener, the support frame is provided with a through hole along the height direction, the locking pipe fitting penetrates through the through hole and is movably arranged in the through hole along the first direction, an opening is formed in the side wall of the mounting hole and corresponds to the side wall of the through hole, and the fastener fixes the locking pipe fitting at the position where the opening is abutted to the side wall of the through hole and is used for fixing the pipe in the mounting hole.
Further preferably, the guide rod is a multi-step rod, the roller is a multi-step roller, and the diameter increasing direction of the guide rod along the axial direction is opposite to the diameter increasing direction of the roller along the axial direction.
Further preferably, the guide bar includes first order guide bar, second level guide bar and the third level guide bar that the diameter increases in proper order, the gyro wheel includes first order gyro wheel, second level gyro wheel and the third level gyro wheel that the diameter increases in proper order, first order guide bar corresponds the third level gyro wheel, the second level guide bar corresponds the second level gyro wheel, the third level guide bar corresponds the first order gyro wheel.
Further preferably, a plurality of groups of mounting holes with different apertures are arranged in the lock pipe block, the apertures of the mounting holes in each group are different, the mounting hole with the smaller aperture corresponds to the small-diameter end on the guide rod, and the mounting hole with the larger aperture corresponds to the large-diameter end on the guide rod.
Further preferably, a plurality of groups of slots with different widths are arranged on the guide rod, the slots are arranged in one-to-one correspondence with the mounting holes, and the widths of the slots are matched with the apertures of the corresponding mounting holes.
Further preferably, the support frame is provided with a through hole, the lock pipe block penetrates through the through hole and can move in the through hole, one surface of the lock pipe block, which is provided with the mounting hole, is a first step surface, one side wall, which is opposite to the first step surface, of the through hole is a second step surface, the first step surface is matched with the second step surface, and the side wall of the mounting hole is provided with an opening right opposite to the second step surface.
Further preferably, the support frame comprises a bottom plate, a side plate and a top plate, the bottom plate is fixed to the bottom of the high-low temperature test box, the side plate is fixed to the bottom plate, the top plate is fixed to the side plate, the locking pipe fitting is arranged on the top plate, the roller is arranged on the side plate, and the locking pipe fitting and the roller are located on the same side of the side plate.
Further preferably, the lock tube piece further comprises a connecting rod, and the guide rod is fixedly connected with the lock tube block through the connecting rod;
the roof is followed first direction is equipped with the guide way, the guide bar passes the guide way, just lock the pipe fitting along the guide way movably sets up.
Further preferably, the high-low temperature test box further comprises a driving piece, the driving piece is arranged outside the high-low temperature test box, and a power shaft of the driving piece penetrates through the side plate and is connected with the roller and used for driving the roller to move back and forth along the first direction.
Further preferably, the power shaft device further comprises a roller fixing piece, the roller fixing piece is fixedly connected with the power shaft, and the roller is arranged on the roller fixing piece.
Further preferably, the test chamber further comprises a plurality of rubber bases, and the bottom plate is fixed at the bottom of the high-low temperature test chamber through the plurality of rubber bases.
Further preferably, the guide bar is cylindrical, and when the roller moves along the first direction to contact with a pipe extending out of the locking pipe fitting, the roller is tangent to the guide bar.
The invention has the technical effects that:
(1) by combining the high-low temperature cycle test and the bending fatigue test, compared with the traditional test method, the test device has the advantages that the test period is short, the real use performance of the pipe can be reflected, meanwhile, the test device is controllable in test condition, simple to operate and stable in test process.
(2) Can guarantee through setting up the guide bar that tubular product can carry out 90 and bend, set up the fluting on the guide bar, guaranteed that tubular product can not take place the skew in position, two pipe winding when experimental, fold the condition such as pressure, slippage, not only improved test device's efficiency of software testing, guaranteed test data's stability and reliability moreover.
(3) The pipe locking block is provided with a mounting hole for mounting a pipe, the pipe is limited through the mounting hole, and the pipe cannot deviate on the pipe locking block when being bent.
(4) Different gradients are designed on the guide rod and the roller, so that pipe products with different outer diameters can be tested simultaneously, and the testing efficiency and the universality of the testing device are improved.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic structural diagram of a high and low temperature bending test device for a pipe of the present invention;
FIG. 2 is a schematic view of the internal structure of the high-low temperature test chamber of the present invention;
FIG. 3 is a schematic structural view of the locking tube assembly of the present invention;
FIG. 4 is a schematic view of the fitting structure of the locking tube member and the roller of the present invention;
fig. 5 is a schematic view of the structure of the top plate of the present invention.
The reference numbers illustrate:
1. a high and low temperature test chamber; 2. a support frame; 201. a through opening; 202. a second step surface; 21. a base plate; 22. a side plate; 23. a top plate; 231. a guide groove; 3. locking the pipe fitting; 31. a tube locking block; 311. mounting holes; 312. an opening; 313. a first step surface; 32. a guide bar; 321. grooving; 322. a first stage guide bar; 323. a second stage guide bar; 324. a third stage guide bar; 33. a connecting rod; 4. a roller; 41. a first-stage roller; 42. a second stage roller; 43. a third-stage roller; 5. a pipe; 6. a fastener; 7. a rubber base; 8. a drive member; 81. a power shaft; 82. a linear bearing; 9. a roller fixing member; 91. a first fixing plate; 92. and a second fixing plate.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
Example one
A high and low temperature bending test device for a pipe is shown in figures 1 and 2 and comprises a high and low temperature test box 1, a support frame 2, a pipe locking piece 3 and a roller 4, wherein the support frame 2 is arranged in the high and low temperature test box 1; the locking pipe fitting 3 is arranged on the support frame 2 and used for fixing the pipe 5; the roller 4 is arranged on the support frame 2 and is located below the locking pipe fitting 3, and the roller 4 can move back and forth along the first direction and is used for bending or loosening the pipe 5 extending out of the bottom of the locking pipe fitting 3.
Specifically, the high-low temperature test chamber 1 is a chamber body capable of generating high temperature conditions and low temperature conditions, and in practical use, an appropriate high-low temperature test chamber 1 can be selected according to the high temperature and low temperature required for testing, for example, the highest temperature required in the testing conditions of the present invention is about 80 degrees, and the lowest temperature is about-20 degrees, so that the high-low temperature test chamber 1 capable of generating high temperature of 80 degrees and low temperature of-20 degrees can be selected. During testing, the temperature change logic of the high-low temperature test box 1 can be adjusted according to the required test conditions, for example, the high-temperature test box can be kept for a long time under the high-temperature condition, the bending resistance of the pipe 5 which is bent for 2 ten thousand times under the high-temperature condition is tested, then the temperature is reduced, the pipe 5 is kept for a long time under the low-temperature condition, and the bending resistance of the pipe 5 which is bent for 2 ten thousand times under the low-temperature condition is tested. Of course, the test conditions may be alternated between high and low temperatures, such as holding at high temperature for a period of time, then holding at low temperature for a period of time, and then holding at high temperature for a period of time.
The roller 4 is arranged below the locking pipe fitting 3, when the roller 4 moves towards the locking pipe fitting 3 along the first direction, the roller 4 is matched with the locking pipe fitting 3 to bend a pipe 5 extending out of the bottom of the locking pipe fitting 3, and the roller 4 loosens the pipe 5 when moving along the opposite direction of the first direction. The pipe 5 can be repeatedly bent and loosened by the reciprocating movement of the roller 4 in the first direction, so that the bending fatigue resistance of the pipe 5 can be tested. Wherein, the first direction is perpendicular to the axial direction of the tube 5, i.e. along the radial direction of the tube 5, so that the roller 4 can bend the tube 5. The reciprocating movement of the roller 4 can be automatically driven by a manual mode area or a motor and the like.
The inventor finds that under the action of low temperature in the low-temperature test process, the pipe 5 can not be restored to a vertical state under the condition of no stress, such test results cannot guarantee the bending times and bending degree of the test conditions, which can cause great errors with the target experimental data, therefore, in order to ensure that the tube 5 can be recovered to the vertical state after being bent for a plurality of times under the condition of no tension, a Teflon conducting wire can pass through the upper part of the tube 5 and penetrate out from the lower end of the tube 5 during testing, knotting the conducting wire at the upper end of the pipe 5 to ensure that the conducting wire cannot slide out of the pipe 5, tying a 500g weight at the lower end of the conducting wire, loosening the pipe 5 by the roller 4, the pipe 5 can be restored to a vertical state under the action of the gravity of the weight, so that the accuracy of experimental test data is guaranteed, the timing maintenance in an experimental operation stage is not needed, and the manual operation is simpler.
Under different temperature conditions, the crystallinity inside the pipe 5 (such as a TPU pneumatic pipe) is different, so that the chain breaking behavior of the subchain is greatly different during bending, and the test result of the bending fatigue resistance of the pipe 4 is greatly different, therefore, the high-low temperature environment is generated by the high-low temperature test box 1 to simulate the real use condition of the pipe 5, and the bending fatigue resistance of the pipe 5 under the high-temperature environment and the bending fatigue resistance of the pipe 5 under the low-temperature environment are tested, so that the real performance of the pipe 5 is better represented.
It should be noted that the high-low temperature bending test device of the invention can be used for testing the bending fatigue resistance of the TPU pneumatic tube in different temperature environments, and can also be used for testing the bending fatigue resistance of other tubes 5 in different temperature environments.
Preferably, as shown in fig. 2 and 3, the tube locking member 3 includes a tube locking block 31 and a guide rod 32, the guide rod 32 is disposed below the tube locking block 31, the guide rod 32 is disposed in parallel with the roller 4, the tube locking block 31 is used for fixing the tube 5, and the surface of the guide rod 32 is provided with a slot 321 adapted to the corresponding tube 5 for receiving the tube 5 protruding from the bottom of the tube locking block 31. The roller 4 moves to be close to the guide rod 32 along a first direction, and the pipe 5 is bent by the acting force of the roller 4 and the guide rod 32, wherein the first direction is vertical to the axial direction of the guide rod 32. Set up fluting 321 on the guide bar 32, stretch out tubular product 5 of lock pipe block 31 bottom and be located fluting 321, fluting 321 can carry on spacingly to tubular product 5, ensures that tubular product 5 can not take place the situation that position deviation, two pipe winding stack pressure lead to conquassation destruction, slippage when the bending test.
The guide bar 32 is cylindrical and the roller 4 is tangent to the guide bar 32 when the roller 4 is moved in the first direction into contact with the tube 5 extending from the locking tube 3. The gyro wheel 4 begins to exert the effort to tubular product 5 from the position tangent with guide bar 32, can guarantee the effect of buckling to tubular product 5, avoids reducing the effort of buckling to tubular product 5 because of gyro wheel 4 and guide bar 32 interval are too big, improves the effect of buckling, and then improves experimental accuracy.
Preferably, as shown in fig. 2 and 3, a mounting hole 311 for mounting the pipe 5 is provided in the pipe locking block 31, the mounting hole 311 penetrates through the pipe locking block 31 in the height direction, and the mounting hole 311 is provided corresponding to the slot 321. Tubular product 5 is installed in mounting hole 311, and tubular product 5 is when buckling, and mounting hole 311 can carry out spacingly to tubular product 5. The tubular product 5 installed in the mounting hole 311 can be prevented from slipping from the mounting hole 311 by the limiting structure, for example, a flange protruding out of the side wall of the tubular product 5 is arranged at the upper end of the tubular product 5, and the tubular product 5 is fixed in the mounting hole 311 by clamping the flange at the top end of the mounting hole 311.
Preferably, the pipe 5 can be fixed in the mounting hole 311 by other means, specifically, as shown in fig. 2 and fig. 3, the mounting frame 2 further includes a fastening member 6, the supporting frame 2 is provided with a through opening 201 along the height direction, the locking pipe 3 passes through the through opening 201 and is movably disposed in the through opening 201 along the first direction, an opening 312 is disposed on a side wall of the mounting hole 311 corresponding to a side wall of the through opening 201, and the fastening member 6 fixes the locking pipe 3 at a position where the opening 312 abuts against the side wall of the through opening 201, so as to fix the pipe 5 in the mounting hole 311.
The mounting hole 311 extends along the height direction of the lock pipe block 31, an opening 312 is formed at a certain position on the side wall of the mounting hole 311, and after the pipe 5 is mounted in the mounting hole 311, the position of the pipe 5 corresponding to the opening 312 is exposed. The opening 312 on the mounting hole 311 corresponds to the side wall of the through opening 201, one side of the locking member 3 provided with the mounting hole 311 moves towards the side wall of the through opening 201, the exposed part of the pipe 5 is pressed with the side wall of the mounting hole 311 through the side wall of the through opening 201, and the pipe 5 can be fixed in the mounting hole 311. The pipe 5 is fixed in the mounting hole 311 by pressing the side wall of the through opening 201 and the side wall of the mounting hole 311, and the contact area with the pipe 5 can be increased when the pipe 5 is fixed, so that the pipe 5 is kept in a vertical state in the mounting hole 311.
The fastening member 6 is screwed to the locking pipe block 31, the locking pipe 3 is moved toward one side wall of the through hole 201 by rotating the fastening member 6, and the locking pipe 3 is fixed in the through hole 201, and at this time, the opening 312 of the mounting hole 311 abuts against the side wall of the through hole 201, so as to clamp the pipe 5 in the mounting hole 311. The number of the fastening members 6 may be plural, and plural fastening members 6 are provided on the lock tube block 31 at intervals in a direction parallel to the guide bar 32 to make the fastening force of the fastening members 6 to the lock tube block 31 more uniform.
As shown in fig. 2, the supporting frame 2 includes a bottom plate 21, a side plate 22 and a top plate 23, the bottom plate 21 is fixed at the bottom of the high and low temperature test chamber 1 through a plurality of rubber bases 7, the side plate 22 is fixed on the bottom plate 21, the top plate 23 is fixed on the side plate 22, the lock pipe 3 is arranged on the top plate 23, the roller 4 is arranged on the side plate 22, and the lock pipe 3 and the roller 4 are located on the same side of the side plate 22. As shown in fig. 5, the top plate 23 is provided with a through opening 201, and the locking pipe 3 passes through the through opening 201 of the top plate 23 and is movably disposed in the through opening 201. The pipe 5 is pressed by the side wall of the opening 312 of the mounting hole 311 and the side wall of the through opening 201 of the top plate 23 to fix the pipe 5 in the mounting hole 311.
As shown in fig. 2 and 3, the locking tube member 3 further includes a connecting rod 33, and the guide rod 32 is fixedly connected to the locking tube block 31 through the connecting rod 33; the top plate 23 is provided with a guide groove 231 in the first direction, the guide bar 32 passes through the guide groove 231, and the lock pipe member 3 is movably disposed along the guide groove 231. When the locking pipe member 3 moves in the through-hole 201, the locking pipe member 3 is guided to be limited by the guide groove 231 and moves in the extending direction of the guide groove 231.
Preferably, as shown in fig. 1, the test device further comprises a driving member 8, the driving member 8 is arranged outside the high-low temperature test chamber 1, and a power shaft 81 of the driving member 8 penetrates through the side plate 22 and is connected with the roller 4 for driving the roller 4 to reciprocate along the first direction. The driving member 8 can be a motor, a pneumatic system, a hydraulic system and the like. The connection between the power shaft 81 and the side plate 22 is provided with a linear bearing 82 to realize the movement of the power shaft 81 relative to the side plate 22.
As shown in fig. 2, the roller 4 is fixedly connected to the power shaft 81 through a roller fixing member 9, the roller fixing member 9 includes a first fixing plate 91 and a second fixing plate 92, the first fixing plate 91 is fixedly connected to the power shaft 81, the second fixing plate 92 is perpendicular to the first fixing plate 91, the roller 4 is mounted on the second fixing plate 92, and the roller 4 can rotate relative to the second fixing plate 92.
Example two
In addition to the first embodiment, as shown in fig. 4, the guide bar 32 in the present embodiment is a multi-step bar, the roller 4 is a multi-step roller, and the diameter of the guide bar 32 in the axial direction is increased in a direction opposite to the diameter of the roller 4 in the axial direction. Set up guide bar 32 and gyro wheel 4 into many steps form, make gyro wheel 4 and guide bar 32 can buckle the tubular product 5 of different diameters simultaneously to test the tubular product 5 of different specifications, improve test device's efficiency of software testing and commonality.
Illustratively, as shown in fig. 4, the guide rod 32 includes a first-stage guide rod 322, a second-stage guide rod 323, and a third-stage guide rod 324 having successively larger diameters, the roller 4 includes a first-stage roller 41, a second-stage roller 42, and a third-stage roller 43 having successively larger diameters, the first-stage guide rod 322 corresponds to the third-stage roller 43, the second-stage guide rod 323 corresponds to the second-stage roller 42, and the third-stage guide rod 324 corresponds to the first-stage roller 41. During testing, the first-stage guide rod 322 and the third-stage roller 43 are matched to bend the pipe 5 extending out of the first-stage guide rod 322, the second-stage guide rod 323 and the second-stage roller 42 are matched to bend the pipe 5 extending out of the second-stage guide rod 323, and the third-stage guide rod 324 and the first-stage roller 41 are matched to bend the pipe 5 extending out of the third-stage guide rod 324.
Preferably, as shown in fig. 2, a plurality of sets of mounting holes 311 with different apertures are disposed in the lock tube block 31, the mounting holes 311 with different apertures in each set have different apertures, the mounting hole 311 with a small aperture corresponds to a small-diameter end on the guide rod 32, and the mounting hole 311 with a large aperture corresponds to a large-diameter end on the guide rod 32. Illustratively, the lock pipe block 31 is provided with three sets of mounting holes 311 with different apertures, the apertures of the plurality of mounting holes 311 in each set are the same, the three sets of mounting holes are respectively a first set of mounting holes, a second set of mounting holes and a third set of mounting holes, the aperture of the first set of mounting holes is smaller than that of the second set of mounting holes, the aperture of the second set of mounting holes is smaller than that of the third set of mounting holes, the first set of mounting holes corresponds to the first-stage guide rod 322, the second set of mounting holes corresponds to the second-stage guide rod 323, and the third set of mounting holes corresponds to the third-stage guide rod 324. The first group of mounting holes are used for mounting the pipe 5 with the smaller diameter, the third group of mounting holes are used for mounting the pipe 5 with the larger diameter, and the second group of mounting holes are used for mounting the pipe 5 with the moderate diameter.
Preferably, as shown in fig. 3 and 4, a plurality of groups of slots 321 with different widths are provided on the guide rod 32, the slots 321 are disposed in one-to-one correspondence with the mounting holes 311, and the width of the slot 321 is adapted to the aperture of the corresponding mounting hole 311. Each stage of guide rod is provided with a group of slots, the width of the slot 321 in each group is the same, and the pipe 5 penetrating out of the mounting hole 311 is positioned in the corresponding slot 321.
Preferably, as shown in fig. 2, a through hole 201 is formed in the top plate 23, the lock pipe block 31 passes through the through hole 201 and is movable in the through hole 201, one surface of the lock pipe block 31 where the mounting hole 311 is formed is a first step surface 313, the first step surface 313 includes a plurality of non-coplanar planes, each plane is correspondingly provided with a set of mounting holes, the aperture of each set of mounting holes is different, one side wall of the through hole 201 opposite to the first step surface 313 is a second step surface 202, the first step surface 313 is adapted to the second step surface 202, and the position where the side wall of the mounting hole 311 faces the second step surface 202 is provided with an opening 312. After the pipe 5 passes through the mounting hole 311, the locking pipe 3 is moved to make the first step surface 313 close to the second step surface 202, the pipe 5 exposed at the opening 312 is pressed by the second step surface 202 to fix the pipe 5 in the mounting hole 311, and the locking pipe 3 is fixed by the fastener 6 after moving to a proper position in the through opening 201. By providing the first step surface 313 and the second step surface 202, pipes 5 of different diameters can be simultaneously pressed to fix the pipes 5 in different bore diameters.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (15)
1. The utility model provides a high low temperature test device that buckles of tubular product which characterized in that includes:
a high and low temperature test chamber;
the support frame is arranged in the high-low temperature test box;
the locking pipe fitting is arranged on the support frame and used for fixing a pipe;
the roller is arranged on the support frame and located below the locking pipe fitting, and the roller can move in a reciprocating mode along the first direction and is used for bending or loosening the pipe extending out of the bottom of the locking pipe fitting.
2. The high and low temperature bending test device of a pipe according to claim 1, wherein the pipe locking piece comprises a pipe locking block and a guide rod, the guide rod is arranged below the pipe locking block, the guide rod is arranged in parallel with the roller, the pipe locking block is used for fixing the pipe, and the surface of the guide rod is provided with a groove matched with the corresponding pipe and used for accommodating the pipe extending from the bottom of the pipe locking block.
3. The high and low temperature bending test device for the pipe according to claim 2, wherein a mounting hole for mounting the pipe is arranged in the pipe locking block, the mounting hole penetrates through the pipe locking block along the height direction, and the mounting hole is arranged corresponding to the slot.
4. The high and low temperature bending test device for the pipe according to claim 3, further comprising a fastening member, wherein the supporting frame is provided with a through hole along a height direction, the locking pipe fitting penetrates through the through hole and is movably arranged in the through hole along a first direction, an opening is arranged on the side wall of the mounting hole corresponding to the side wall of the through hole, and the fastening member fixes the locking pipe fitting at a position where the opening abuts against the side wall of the through hole, so as to fix the pipe in the mounting hole.
5. The high and low temperature bending test device for the pipe according to claim 2, wherein the guide rod is a multi-step rod, the roller is a multi-step roller, and the diameter of the guide rod in the axial direction is increased in a direction opposite to the diameter of the roller in the axial direction.
6. The high and low temperature bending test device of a pipe according to claim 5, wherein the guide rods comprise a first-stage guide rod, a second-stage guide rod and a third-stage guide rod with successively increasing diameters, the rollers comprise a first-stage roller, a second-stage roller and a third-stage roller with successively increasing diameters, the first-stage guide rod corresponds to the third-stage roller, the second-stage guide rod corresponds to the second-stage roller, and the third-stage guide rod corresponds to the first-stage roller.
7. The device for testing high and low temperature bending of a pipe according to claim 5, wherein a plurality of sets of mounting holes with different apertures are provided in the lock pipe block, each set of mounting holes has a different aperture, the mounting hole with a smaller aperture corresponds to the small diameter end of the guide rod, and the mounting hole with a larger aperture corresponds to the large diameter end of the guide rod.
8. The high and low temperature bending test device of a pipe according to claim 7, wherein a plurality of groups of slots with different widths are arranged on the guide rod, the slots are arranged in one-to-one correspondence with the mounting holes, and the widths of the slots are adapted to the apertures of the corresponding mounting holes.
9. The device for testing high and low temperature bending of a tubular product according to claim 7, wherein the supporting frame is provided with a through hole, the tube locking block passes through the through hole and is movable in the through hole, one side of the tube locking block provided with the mounting hole is a first step surface, one side wall of the through hole opposite to the first step surface is a second step surface, the first step surface is matched with the second step surface, and an opening is arranged at a position of the side wall of the mounting hole facing the second step surface.
10. The device for testing high and low temperature bending of a pipe according to any one of claims 2 to 9, wherein the supporting frame comprises a bottom plate, a side plate and a top plate, the bottom plate is fixed at the bottom of the high and low temperature test chamber, the side plate is fixed on the bottom plate, the top plate is fixed on the side plate, the locking pipe is arranged on the top plate, the roller is arranged on the side plate, and the locking pipe and the roller are located on the same side of the side plate.
11. The high and low temperature bending test device of the pipe according to claim 10,
the locking pipe fitting further comprises a connecting rod, and the guide rod is fixedly connected with the locking pipe block through the connecting rod;
the roof is followed first direction is equipped with the guide way, the guide bar passes the guide way, just lock the pipe fitting along the guide way movably sets up.
12. The device for testing high and low temperature bending of a pipe according to claim 10, further comprising a driving member, wherein the driving member is disposed outside the high and low temperature test chamber, and a power shaft of the driving member passes through the side plate and is connected to the roller for driving the roller to reciprocate along a first direction.
13. The device for testing high and low temperature bending of a pipe according to claim 12, further comprising a roller fixing member, wherein the roller fixing member is fixedly connected with the power shaft, and the roller is disposed on the roller fixing member.
14. The apparatus according to claim 10, further comprising a plurality of rubber bases, wherein the bottom plate is fixed to the bottom of the high-low temperature test chamber through the plurality of rubber bases.
15. The device for testing high and low temperature bending of a pipe according to claim 2, wherein the guide rod is cylindrical, and the roller is tangent to the guide rod when the roller moves along the first direction to contact the pipe extending out of the locking pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP3205593U (en) * | 2016-05-10 | 2016-08-04 | 有限会社カワサキ機工 | Equipment for bending pipe materials |
| CN105965864A (en) * | 2016-06-20 | 2016-09-28 | 天津瑞岭科技发展有限公司 | Plastic pipe bending machine |
| CN206104619U (en) * | 2016-10-27 | 2017-04-19 | 千钟焕 | Can debug multicell mould that directly bends of colding pressing |
| CN109374411A (en) * | 2018-11-05 | 2019-02-22 | 清华大学苏州汽车研究院（相城） | A kind of tensile test device of bending material |
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| CN210487498U (en) * | 2019-04-29 | 2020-05-08 | 上海李尔实业交通汽车部件有限公司 | Automobile wire harness bending simulation test device |
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| JP3205593U (en) * | 2016-05-10 | 2016-08-04 | 有限会社カワサキ機工 | Equipment for bending pipe materials |
| CN105965864A (en) * | 2016-06-20 | 2016-09-28 | 天津瑞岭科技发展有限公司 | Plastic pipe bending machine |
| CN206104619U (en) * | 2016-10-27 | 2017-04-19 | 千钟焕 | Can debug multicell mould that directly bends of colding pressing |
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