CN117848865B - Rubber bushing fatigue test device - Google Patents
Rubber bushing fatigue test device Download PDFInfo
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- CN117848865B CN117848865B CN202410263509.9A CN202410263509A CN117848865B CN 117848865 B CN117848865 B CN 117848865B CN 202410263509 A CN202410263509 A CN 202410263509A CN 117848865 B CN117848865 B CN 117848865B
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 21
- 241001247986 Calotropis procera Species 0.000 abstract description 19
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000004154 testing of material Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of material testing, and discloses a rubber bushing fatigue test device which comprises a bottom shell, wherein an installation block is fixedly installed on the upper surface of the bottom shell, a supporting mechanism is fixedly installed in the middle of the installation block, the supporting mechanism comprises an installation shaft, a plurality of side grooves are formed in the curved surface of the installation shaft at equal intervals, a sleeve rod is fixedly installed in the upper circumference of the curved surface of the installation shaft at equal intervals, the sleeve rod is located in the middle of two adjacent side grooves, and a sleeve is sleeved on the sleeve rod in a sliding manner away from the installation shaft. The distance that the clamping mechanism is regulated and controlled to push the bent plate to move to one side far away from the installation shaft through the weight groups with different masses simulates the pressure born by the inner curved surface of the rubber bush and the fatigue limit change of the rubber bush with different diameters on the same inner curved surface pressure when the same rubber bush is sleeved on workpieces with different diameters, so that the problem that the conventional rubber bush fatigue test device cannot measure the fatigue strength and the measured force of the rubber bush and the numerical relation of various dimensional changes of the rubber bush is solved.
Description
Technical Field
The invention belongs to the technical field of material testing, and particularly relates to a rubber bushing fatigue test device.
Background
The rubber bushing is a matched set for mechanical parts to achieve the effects of sealing, abrasion protection and the like, is widely applied in the field of valves, and is arranged in a valve cover and used for sealing.
In the running process of the machine, vibration and reciprocating motion of the machine can generate multiple changes such as stretching and extrusion on the rubber bushing, so that the time of failure of the rubber bushing when the rubber bushing is used and the machine is needed to be timely judged, so that the rubber bushing is timely replaced, severe abrasion and hydraulic leakage of mechanical parts are avoided, the rubber bushing is needed to be subjected to a sleeve fatigue test, the conventional rubber bushing fatigue test equipment generally adopts the extrusion and stretching mode to measure the elastic performance change of the rubber bushing, but the fatigue strength and the numerical relation between the measured force and each dimensional change of the rubber bushing cannot be measured, and the problem that the effect of the rubber bushing is poor is caused because the fatigue strength of the rubber bushing is in the required range, and the rubber bushing and the workpiece are originally detected to be loose and generate gaps due to the change of each dimensional change of the rubber bushing and the contact force of the rubber bushing and the workpiece.
Disclosure of Invention
The invention aims to provide a rubber bushing fatigue test device for solving the problems in the background technology.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a rubber bushing fatigue test device, includes the drain pan, the last fixed surface of drain pan installs the installation piece, the middle part fixed mounting of installation piece has supporting mechanism, supporting mechanism includes the installation axle, a plurality of side slots have been seted up to the curved surface equidistance of installation axle, the upper portion circumference equidistance fixed mounting of the curved surface of installation axle has the loop bar, the loop bar is located the middle part of two adjacent side slots, the loop bar is kept away from the installation axle and is slidingly sleeved with the sleeve, one side fixed mounting that the sleeve kept away from the installation axle has the bent plate, the upper portion fixed mounting of installation axle curved surface has the lower limit cover, the top fixed mounting of installation axle curved surface has the upper limit cover, a plurality of bent plate and installation axle between be equipped with clamping mechanism, clamping mechanism includes a plurality of swivel mount, a plurality of the equal movable sleeve in the middle part of swivel mount has the rotor plate, a plurality of the rotor plate is close to the outer curved surface of installation axle one end movable sleeve, the sliding sleeve cup joints at the outer curved surface of installation axle, the fixed surface of sliding sleeve has a plurality of bent plate, a plurality of fixed surface fixed mounting of bent plate have the electrical resistance to be equipped with the first curved surface, the fixed surface is equipped with the fixed surface of electrical resistance of fixed ring, the fixed surface of the first fixed ring is equipped with the bottom of the fixed surface of the fixed ring.
Preferably, the pushing mechanism comprises a plurality of external thread sleeves, the circumference of each external thread sleeve is equidistantly rotated and arranged on the upper surface of the mounting block, a middle rod is sleeved at the middle part of each external thread sleeve in a sliding mode, a plurality of connecting rings are fixedly mounted at the top ends of the middle rods, a plurality of pressing shafts are fixedly mounted at the circumference of an inner curved surface of each connecting ring in an equidistance mode, a pressing block is sleeved at one side, close to the mounting shaft, of each pressing shaft in a sliding mode, a plurality of elastic bases are connected with the middle part of each external thread sleeve in a threaded mode, a plurality of elastic pieces are fixedly mounted at the circumference of the upper surface of each elastic base in an equidistance mode, outer tooth sleeves are fixedly sleeved at the bottoms of the external thread sleeves, inner tooth rings are arranged at the outer sides of the outer tooth sleeves, the outer tooth sleeves are meshed with the inner tooth rings, and a plurality of distance measuring mechanisms are fixedly mounted at the circumference of the outer curved surface of each connecting ring and the elastic bases in an equidistance mode.
Preferably, the stamping mechanism comprises side plates, the side plates are symmetrically and fixedly arranged in front of and behind the bottom shell, supporting seats are fixedly arranged on the upper surfaces of the side plates, supporting plates are fixedly arranged at the top ends of the two supporting seats, a telescopic cylinder is fixedly arranged in the middle of the bottom surface of the supporting plate, and a pressing plate is fixedly arranged at the telescopic end of the telescopic cylinder.
Preferably, the distance measuring mechanism comprises a plurality of upper side blocks, the upper side blocks are circumferentially equidistantly and fixedly arranged on the outer curved surface of the connecting ring, a central shaft is fixedly arranged at the bottom end of the upper side block, a second electric ring is fixedly arranged at the bottom end of the central shaft, a second resistor sleeve is sleeved on the outer curved surface of the second electric ring in a sliding manner, a lower side block is fixedly arranged at the bottom end of the second resistor sleeve, and the lower side block is fixedly arranged on the outer side surface of the elastic seat.
Preferably, the installation shaft is made of high-strength wear-resistant insulating materials, the inner curved surface of the installation shaft is a smooth surface, and the installation shaft is made of PVE plastics.
Preferably, the outer curved surface of the curved plate is a smooth surface, and the hanging rod is made of high-strength wear-resistant insulating materials.
Preferably, the weights are different in size, and the weights are made of high-density materials.
Preferably, the rotation directions of the plurality of external thread sleeves are the same, and the inner curved surface of the pressing block is a smooth plane.
The beneficial effects of the invention are as follows:
1. According to the invention, the clamping mechanism is regulated by a weight set with different masses to push the curved plate to move towards the side far away from the mounting shaft, when the same rubber bush is sheathed on workpieces with different diameters, the pressure born by the inner curved surface of the rubber bush and the fatigue limit change of the rubber bush with different diameters under the same inner curved surface pressure are simulated, then the top end of the rubber bush is continuously and alternately extruded by the stamping mechanism, so that the fatigue strength of the rubber bush is increased, the elasticity of the rubber bush is weakened, at the moment, the weight does not change the pressure of the curved plate on the inner curved surface of the rubber bush due to the unchanged mass of the weight set, along with the weakening of the elasticity of the rubber bush, the weight pushes the curved plate to move towards the side far away from the mounting shaft through the clamping mechanism, at the moment, the first electric ring on the clamping mechanism moves downwards, at the moment, the distance between the first electric ring moves downwards and the electric block is reduced according to the principle of a slide rheostat, the resistance between the first electric ring and the electric block is reduced, at the moment, the current change between the first electric ring and the electric block can be obtained through the current change between the first electric ring and the electric block under different inner curved surface pressures, the rubber bush with the different diameters of the rubber bush, the rubber bush is reduced under the different diameters, the workpiece, the rubber strength and the rubber bush with the same diameter, the weight is unchanged, the weight is pressed on the inner curved surface, the curve is and the rubber bush with different diameters, the weight is;
2. The invention rotates the inner gear ring forward to move the elastic seat downward, changes the distance between the connecting ring and the elastic seat when the bottom surface of the pressing block contacts with the top surface of the rubber bushing, adjusts the extension length of the elastic piece between the connecting ring and the elastic seat, thereby controlling the pressure of the connecting ring on the top surface of the rubber bushing, then continuously and alternately presses the top end of the rubber bushing through the stamping mechanism to increase the fatigue strength of the rubber bushing, weakens the elasticity of the rubber bushing, reduces the supporting force of the rubber bushing on the pressing block, pulls the connecting ring to move downward by the elastic piece, gradually reduces the distance between the connecting ring and the elastic seat, and reduces the distance between the second electric ring and the second resistance sleeve according to the principle of the slide rheostat, the resistance between the second electric ring and the bottom end of the second resistance sleeve is reduced, at the moment, the change of the current value between the second electric ring and the bottom end of the second resistance sleeve can be used for measuring the change value of the fatigue strength of the rubber sleeve and the pressure of the two ends of the rubber sleeve and the workpiece under different pressures, so that the extrusion times which can be born when the two ends of the rubber sleeve are tightly sleeved on the side surface of the workpiece are obtained, the tightness of the two ends of the connecting part of the workpiece is ensured, meanwhile, the extension length of the spring can be judged through the change of the current value, the pressure change of the connecting ring and the top surface of the rubber sleeve is determined, the change value of the pressure of the top surface of the rubber sleeve and the contact surface of the workpiece is deduced, and the sealing failure time of the two ends of the rubber sleeve is determined.
Drawings
FIG. 1 is a schematic view of the overall appearance structure of the present invention;
FIG. 2 is a schematic view of the pressing mechanism of the present invention;
FIG. 3 is a schematic view of a ranging mechanism according to the present invention;
FIG. 4 is a schematic view of a clamping mechanism according to the present invention;
FIG. 5 is a schematic view of the structure of the supporting mechanism of the present invention;
FIG. 6 is a schematic diagram of the weight structure of the present invention.
In the figure: 1. a bottom case; 2. a mounting block; 3. a support mechanism; 301. a mounting shaft; 302. a side groove; 303. a loop bar; 304. a sleeve; 305. a lower limit sleeve; 306. an upper limit sleeve; 4. a curved plate; 5. a clamping mechanism; 501. rotating base; 502. a rotating plate; 503. a sliding sleeve; 504. a hanging rod; 505. a law disc; 506. a first electrical ring; 6. a weight; 7. a first resistor sleeve; 701. an electrical block; 8. a pressing mechanism; 801. an external thread sleeve; 802. a middle rod; 803. a connecting ring; 804. pressing a shaft; 805. briquetting; 806. an elastic seat; 807. an elastic member; 808. an outer tooth sleeve; 809. an inner gear ring; 9. a punching mechanism; 901. a side plate; 902. a support base; 903. a support plate; 904. a telescopic cylinder; 905. a pressure plate; 10. a distance measuring mechanism; 1001. an upper block; 1002. a center shaft; 1003. a second electrical ring; 1004. a second resistor sleeve; 1005. and a lower block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, the embodiment of the invention provides a rubber bushing fatigue test device, which comprises a bottom shell 1, wherein a mounting block 2 is fixedly mounted on the upper surface of the bottom shell 1, a supporting mechanism 3 is fixedly mounted in the middle of the mounting block 2, the supporting mechanism 3 comprises a mounting shaft 301, the mounting shaft 301 is made of a high-strength wear-resistant insulating material, the inner curved surface of the mounting shaft 301 is a smooth surface, the mounting shaft 301 is made of PVE plastic, so that when a weight 6 slides downwards along the inner curved surface of the mounting shaft 301, the inner curved surface of the mounting shaft 301 and the weight 6 are prevented from rubbing with each other, the weight 6 is prevented from being rapidly worn, the weight 6 is prevented from being reduced in mass, and the force when a clamping mechanism 5 pushes a curved plate 4 to press the inner curved surface of the rubber bushing is reduced, and the subsequent detection precision is prevented from being reduced;
The curved surface of the installation shaft 301 is provided with a plurality of side grooves 302 at equal intervals, the upper circumference of the curved surface of the installation shaft 301 is fixedly provided with a loop bar 303 at equal intervals, the loop bar 303 is positioned in the middle of two adjacent side grooves 302, the loop bar 303 is far away from the installation shaft 301 and is in sliding sleeve joint with a sleeve 304, one side of the sleeve 304 far away from the installation shaft 301 is fixedly provided with a curved plate 4, the upper part of the curved surface of the installation shaft 301 is fixedly provided with a lower limit sleeve 305, the top of the curved surface of the installation shaft 301 is fixedly provided with an upper limit sleeve 306, thereby controlling the expanding diameter of a plurality of curved plates 4 by controlling the displacement of the sliding sleeve 503 along the upper and lower curved surfaces of the installation shaft 301, avoiding the inward shrinkage of the plurality of curved plates 4 when the sliding sleeve 503 moves downwards, realizing the anti-fatigue performance test of rubber bushings with different inner curved surface diameters, avoiding the curved plates 4 from scratching the rubber bushing when the inner side surface of the curved plate 4 clamps the rubber bushing, causing inaccurate detection result due to the scratch of the rubber bushing, and a clamping mechanism 5 arranged between the plurality of curved plates 4 and the installation shaft 301;
The clamping mechanism 5 comprises a plurality of rotary bases 501, the rotary bases 501 are respectively and fixedly arranged at the upper parts of the inner curved surfaces of the curved plates 4, the rotary plates 502 are movably sleeved at the middle parts of the rotary bases 501, the sliding sleeves 503 are movably sleeved at one ends of the rotary plates 502 close to the mounting shafts 301, the sliding sleeves 503 are slidably sleeved on the outer curved surfaces of the mounting shafts 301, the inner curved surfaces of the sliding sleeves 503 are fixedly provided with a plurality of hanging rods 504 at equal intervals, the hanging rods 504 are made of high-strength wear-resistant insulating materials, and the hanging rods 504 are made of PVE plastics, so that when the first electric rings 506 are electrified, current on the first electric rings 506 is prevented from being conducted upwards through the mounting shafts 301 and the hanging rods 504 to cause electric leakage, the hanging rods 504 are respectively and slidably sleeved at the middle parts of the side grooves 302, the bottoms of the inner curved surfaces of the rotary bases 501 are fixedly provided with the law plates 505, the outer curved surfaces at the bottoms of the hanging rods 504 are fixedly sleeved with the first electric rings 506, and the inner curved surfaces of the first electric rings 506 are in sliding contact with the outer curved surfaces of the mounting shafts 301;
The upper surface of the law disc 505 is provided with a plurality of weights 6, the sizes of the weights 6 are different, the weights 6 can be freely combined into a plurality of different and accurate mass values, thereby freely regulating and controlling the fatigue limit change under different extrusion forces of the inner side surface of the rubber bushing, the weights 6 are made of high-density materials, the weights 6 are made of tungsten metal, thereby solving the problems that when the inner curved surface diameter of the hanging rod 504 is small and the weight 6 is small in mass, the weight of the weights 6 can still pull the sliding sleeve 503 to move downwards through the law disc 505 and the hanging rod 504, the sliding sleeve 503 can push the bent plate 4 to move towards one side far away from the mounting shaft 301 through the rotating plate 502 and the rotating seat 501, the problem that the force of the bent plate 4 for clamping the rubber bushing is insufficient when the weight 6 is too small in mass, the fatigue limit test range is reduced under different pressures of the inner side surface of the rubber bushing is solved, the first resistor sleeve 7 is fixedly arranged in the middle of the inner cavity bottom surface of the bottom shell 1, the electric block 903 is fixedly arranged at the bottom of the inner curved surface of the first resistor sleeve 7, the lower pressing mechanism 8 is fixedly arranged at the upper part of the mounting block 2, the front and the bottom shell 1 are respectively provided with the pressing mechanism 9, the pressing mechanism is fixedly arranged on the front and the two sides of the bottom shell 902 are respectively, the pressing mechanism is fixedly arranged, the pressing mechanism is provided with the supporting plate 902 and the supporting plate 902 is fixedly arranged, the supporting plate is fixedly arranged at the bottom plate 902, and the bottom plate is fixedly arranged at the bottom of the bottom shell is fixedly arranged, and support plate 902, and the bottom support plate is fixedly arranged, and top support plate is fixedly arranged on the bottom support plate and top, and top support plate and top, and support plate is respectively.
As shown in fig. 1 to 3, the pressing mechanism 8 comprises a plurality of external thread sleeves 801, the circumferences of the plurality of external thread sleeves 801 are equidistantly rotated and arranged on the upper surface of the mounting block 2, and the rotation directions of the plurality of external thread sleeves 801 are the same, so that when the inner gear ring 809 is rotated, the inner gear ring 809 simultaneously drives the plurality of external thread sleeves 801 to rotate together through the external thread sleeves 808, the elastic seat 806 is pushed to move upwards or downwards, the distance between the connecting ring 803 and the pressing block 805 is changed, the telescopic length of the elastic piece 807 is adjusted, the pressure of the connecting ring 803 to the top of the rubber bushing is changed, and the change condition of the elastic performance and the fatigue strength of the rubber bushing under different pressures is measured;
The middle part of the external thread bush 801 is slidably sleeved with a middle rod 802, the top ends of the plurality of middle rods 802 are fixedly provided with a connecting ring 803, the circumferences of inner curved surfaces of the plurality of external thread bushes 803 are fixedly sleeved with a plurality of pressing shafts 804 at equal intervals, one side of each pressing shaft 804 close to the corresponding mounting shaft 301 is slidably sleeved with a pressing block 805, the inner curved surfaces of the pressing blocks 805 are smooth planes, accordingly, the pressing blocks 805 are prevented from scratching rubber bushings, fatigue resistance of the rubber bushings is reduced, the detection results are inaccurate, the middle threads of the plurality of external thread bushes 801 are connected with elastic bases 806, the upper surface circumferences of the elastic bases 806 are fixedly provided with a plurality of elastic pieces 807 at equal intervals, the top ends of the plurality of elastic pieces 807 are fixedly connected with the bottom ends of the connecting ring 803, the bottoms of the plurality of the external thread bushes 801 are fixedly sleeved with an outer tooth bush 808, the outer tooth bush 808 is provided with an inner tooth ring 809, the outer tooth bush 808 is meshed with the ring 809, the circumferences of the outer curved surfaces of the connecting ring 803 are fixedly provided with a plurality of ranging mechanisms 10 at equal intervals, each ranging mechanism 10 comprises a plurality of upper side blocks 1001, the circumferences of the upper side blocks 1001 are fixedly arranged on the outer curved surfaces of the connecting ring 1001, the upper side blocks 803 are fixedly provided with the bottom ends of the second inner tooth bush 1003, the second inner tooth bush 1003 is fixedly arranged at the bottom ends of the second inner tooth bush 1003, and the second inner tooth bush is fixedly arranged on the second inner tooth bush 1003 is fixedly connected with the bottom end of the second inner tooth bush 1003, and fixedly arranged on the second inner tooth bush is fixedly arranged on the bottom end of the second inner tooth bush, and is fixedly arranged on the second inner tooth bush side of the second electric ring, and is fixedly arranged on the second side, and is fixedly on the bottom axle upper side, and is fixedly arranged on the bottom axle, and is fixedly, and fixed, and on the upper side.
Working principle:
When the device is used, firstly, the pressing block 805 is moved to one side far from the mounting shaft 301, then the rubber bushing with detection is sleeved on the outer curved surface of the plurality of curved plates 4, then the pressing block 805 is moved to one side of the mounting shaft 301, so that the pressing block 805 moves to the position right above the rubber bushing, then the plurality of weights 6 are sequentially put into the middle part of the mounting shaft 301 from the opening of the inner cavity at the top of the mounting shaft 301, the weights 6 in the mounting shaft 301 move downwards to be contacted with the law disc 505, the law disc 505 is pushed by the gravity to pull the sliding sleeve 503 to move downwards through the vertical rod 504, the sliding sleeve 503 pushes the swivel seat 501 to move to one side far from the mounting shaft 301 through the rotating plate 502, the swivel seat 501 pushes the curved plate 4 to move to be closely attached to the inner side far from the mounting shaft 301, the inner side of the rubber bushing is simulated, the pressure born by the inner curved surface of the rubber bushing is simulated when the rubber bushing is sleeved on a workpiece with different diameters, at the same time, the plurality of weights 6 with different and accurate mass values are freely combined at the moment, the large diameter of the plurality of curved plates 4 are adjusted, the large diameter of the rubber bushings 4 are adjusted, the large diameter of the rubber is freely, and the inner curved surfaces of the rubber bushing is measured, and the inner diameter of the rubber bushing is different, and the inner diameter of the inner curved surfaces of the workpiece is adjusted and the inner diameter is adjusted and different, and the inner diameter of the workpiece is measured and different;
Then the inner gear ring 809 is rotated positively, the inner gear ring 809 drives the outer gear sleeve 808 to rotate, the outer gear sleeve 808 drives the outer thread sleeve 801 to rotate, the outer thread sleeve 801 drives the elastic seat 806 to move downwards, at the moment, the bottom surface of the pressing block 805 is contacted with the top surface of the rubber bushing, the pressing block 805 keeps consistent with the height of the connecting ring 803 through the pressing shaft 804, the elastic piece 807 is pulled to stretch by the downward moving elastic seat 806, so that the pressure of the pressing block 805 to the top surface of the rubber bushing is improved, the fatigue limit change of the rubber bushing is measured under different pressures of the rubber bushing, then the telescopic cylinder 904 is started, the telescopic end of the telescopic cylinder 904 pushes the pressing block 905 to move downwards, the bottom surface of the pressing block 905 is contacted with the top surface of the pressing block 805, and the pressing block 805 pushes the pressing block 805 to move downwards to squeeze the rubber bushing to shrink;
At this time, after the position of the elastic seat 806 is fixed, the pressing block 805 compresses the elastic piece 807 through the pressing shaft 804 and the connecting ring 803, the connecting ring 803 drives the middle rod 802 to slide towards the inner cavity of the external thread sleeve 801, then the telescopic cylinder 904 is reversely started, the elastic piece 807 resets to push the connecting ring 803 to move upwards, the rubber bushing resets to be tightly attached to the pressing block 805, along with the increase of the extrusion times of the rubber bushing, the extrusion elasticity of the rubber bushing is continuously weakened, at this time, the supporting force of the rubber bushing on the pressing block 805 is reduced, at this time, the elastic piece 807 pulls the connecting ring 803 to move downwards, so that the distance between the connecting ring 803 and the elastic seat 806 is gradually reduced, at this time, the connecting ring 803 drives the upper side block 1001 to move downwards, the upper side block 1001 drives the second electric ring 1003 to move downwards through the middle shaft 1002, at this time, according to the principle of a slide rheostat, the distance between the second electric ring 1003 and the second electric resistance sleeve 1004 is reduced, at this time, the resistance between the second electric ring 1003 and the bottom end of the second electric resistance sleeve 1004 is reduced, at this time, the change of the current value between the bottom ends of the second electric ring 1003 and the second electric resistance sleeve 1004 can be increased along with the increase of the rubber bushing fatigue strength, the change curve of the elasticity is obtained;
In addition, along with the increase of the fatigue strength of the rubber bushing, the elasticity of the rubber bushing continuously weakens, at this moment, the weight 6 pulls the sliding sleeve 503 to move downwards through the normal plate 505 and the vertical rod 504, the sliding sleeve 503 pushes the curved plate 4 to move to one side far away from the installation shaft 301 through the rotating plate 502 and the rotating seat 501, the curved plate 4 contacts with the inner curved surface of the rubber bushing with the same strength, at this moment, the vertical rod 504 which moves downwards drives the first electric ring 506 to move downwards, so that the distance between the first electric ring 506 and the electric block 701 is reduced, at this moment, according to the principle of a sliding rheostat, the distance between the first electric ring 506 and the electric block 701 is reduced, at this moment, the resistance between the first electric ring 506 and the electric block 701 is reduced, at this moment, the change value of the fatigue strength of the rubber bushing and the inner curved surface diameter of the rubber bushing under different inner curved surface pressures can be obtained, thereby realizing the measurement of the standard value of the fatigue limit change of the rubber bushing, and further, the number of extrusion times that can be born when the rubber bushing is tightly sleeved on the side of a workpiece can be measured.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a rubber bushing fatigue test device, includes drain pan (1), the upper surface fixed mounting of drain pan (1) has installation piece (2), its characterized in that: the middle part fixed mounting of installation piece (2) has supporting mechanism (3), supporting mechanism (3) are including installation axle (301), a plurality of side slots (302) have been seted up to the curved surface equidistance of installation axle (301), the upper portion circumference equidistance fixed mounting of the curved surface of installation axle (301) has loop bar (303), loop bar (303) are located the middle part of two adjacent side slots (302), loop bar (303) keep away from installation axle (301) and slide and cup joint sleeve (304), one side fixed mounting that sleeve (304) kept away from installation axle (301) has bent plate (4), the upper portion fixed mounting of installation axle (301) curved surface has lower limit cover (305), the top fixed mounting of installation axle (301) curved surface has upper limit cover (306), a plurality of bent plate (4) and installation axle (301) between be equipped with fixture (5), fixture (5) include a plurality of swivel mount (501) respectively fixed mounting in bent plate (4) upper portion of curved surface, a plurality of swivel mount (501) are close to the swivel mount (301) and are all cup jointed at the swivel mount (503) outside the swivel mount (301), the utility model discloses a device for manufacturing a liquid crystal display device, including sliding sleeve (503), including side groove (302), slide sleeve (503), fixed mounting of the inner curved surface circumference of sliding sleeve (503), a plurality of perpendicular pole (504) are respectively sliding sleeve joint in the middle part of side groove (302), a plurality of fixed mounting in the bottom of swivel mount (501) inner curved surface has law dish (505), a plurality of fixed sleeve joint of the outer curved surface of perpendicular pole (504) bottom has first electric ring (506), the inner curved surface of first electric ring (506) and the outer curved surface sliding contact of installation axle (301), the upper surface of law dish (505) is equipped with weight (6), the middle part fixed mounting of drain pan (1) inner chamber bottom has first resistance cover (7), the bottom fixed mounting of the inner curved surface of first resistance cover (7) has electric block (701), the upper portion fixed mounting of installation piece (2) has pushing mechanism (8), the front and back both sides of drain pan (1) are equipped with stamping mechanism (9).
2. The rubber bushing fatigue test device according to claim 1, wherein: the utility model provides a push down mechanism (8) including a plurality of external screw thread cover (801), a plurality of external screw thread cover (801) circumference equidistance rotates the upper surface that sets up in installation piece (2), the middle part slip of external screw thread cover (801) cup joints midpole (802), a plurality of the top fixed mounting of midpole (802) has go-between (803), the equidistant fixed mounting of inner surface circumference of go-between (803) has a plurality of pressure shafts (804), one side that pressure shaft (804) is close to installation axle (301) has slidingly cup jointed briquetting (805), a plurality of the middle part threaded connection of external screw thread cover (801) has elastic seat (806), the upper surface circumference equidistance fixed mounting of elastic seat (806) has a plurality of elastic component (807), a plurality of the top of elastic component (807) and the bottom fixed connection of go-between (803), a plurality of the bottom of external screw thread cover (801) all has fixed cup jointed outer tooth cover (808), a plurality of the outside of outer tooth cover (808) is equipped with ring (808), outer tooth cover (809) and ring (809) have elastic surface (803) to mesh with fixed equidistant fixed seat (10) of outer tooth ring (803).
3. The rubber bushing fatigue test device according to claim 1, wherein: the stamping mechanism (9) comprises side plates (901), the side plates (901) are symmetrically and fixedly arranged in front of and behind the bottom shell (1), supporting seats (902) are fixedly arranged on the upper surfaces of the side plates (901), supporting plates (903) are fixedly arranged at the top ends of the supporting seats (902), telescopic cylinders (904) are fixedly arranged in the middle of the bottom surfaces of the supporting plates (903), and pressure plates (905) are fixedly arranged at the telescopic ends of the telescopic cylinders (904).
4. The rubber bushing fatigue test device according to claim 2, wherein: the range finding mechanism (10) comprises a plurality of upper side blocks (1001), wherein the upper side blocks (1001) are fixedly arranged on the outer curved surface of the connecting ring (803) at equal intervals in circumference, a middle shaft (1002) is fixedly arranged at the bottom end of the upper side block (1001), a second electric ring (1003) is fixedly arranged at the bottom end of the middle shaft (1002), a second resistor sleeve (1004) is sleeved on the outer curved surface of the second electric ring (1003) in a sliding manner, a lower side block (1005) is fixedly arranged at the bottom end of the second resistor sleeve (1004), and the lower side block (1005) is fixedly arranged on the outer side surface of the elastic seat (806).
5. The rubber bushing fatigue test device according to claim 1, wherein: the mounting shaft (301) is made of high-strength wear-resistant insulating materials, the inner curved surface of the mounting shaft (301) is a smooth surface, and the mounting shaft (301) is made of PVE plastics.
6. The rubber bushing fatigue test device according to claim 1, wherein: the outer curved surface of the curved plate (4) is a smooth surface, and the hanging rod (504) is made of high-strength wear-resistant insulating material.
7. The rubber bushing fatigue test device according to claim 1, wherein: the weights (6) are different in size, and the weights (6) are made of high-density materials.
8. The rubber bushing fatigue test device according to claim 2, wherein: the rotation directions of the plurality of external thread sleeves (801) are the same, and the inner curved surface of the pressing block (805) is a smooth plane.
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| CN202410263509.9A CN117848865B (en) | 2024-03-08 | 2024-03-08 | Rubber bushing fatigue test device |
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| CN202410263509.9A CN117848865B (en) | 2024-03-08 | 2024-03-08 | Rubber bushing fatigue test device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100369A (en) * | 1986-01-24 | 1987-08-12 | 明尼苏达州采矿制造公司 | Electric cable splice enclosure |
| CN203758863U (en) * | 2014-03-20 | 2014-08-06 | 辽宁工业大学 | Crank connecting rod double-spring fatigue test bench for rubber bushings |
| CN209043729U (en) * | 2018-10-17 | 2019-06-28 | 浙江埃科汽车技术服务有限公司 | A kind of bushing torsional fatigue test tooling |
| CN114001936A (en) * | 2021-10-16 | 2022-02-01 | 江苏橡倍特新材料科技有限公司 | Fatigue test device for rubber bushing of shock absorber |
| CN116858716A (en) * | 2023-06-29 | 2023-10-10 | 河南省计量测试科学研究院 | Composite material performance detection device for weights |
-
2024
- 2024-03-08 CN CN202410263509.9A patent/CN117848865B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100369A (en) * | 1986-01-24 | 1987-08-12 | 明尼苏达州采矿制造公司 | Electric cable splice enclosure |
| CN203758863U (en) * | 2014-03-20 | 2014-08-06 | 辽宁工业大学 | Crank connecting rod double-spring fatigue test bench for rubber bushings |
| CN209043729U (en) * | 2018-10-17 | 2019-06-28 | 浙江埃科汽车技术服务有限公司 | A kind of bushing torsional fatigue test tooling |
| CN114001936A (en) * | 2021-10-16 | 2022-02-01 | 江苏橡倍特新材料科技有限公司 | Fatigue test device for rubber bushing of shock absorber |
| CN116858716A (en) * | 2023-06-29 | 2023-10-10 | 河南省计量测试科学研究院 | Composite material performance detection device for weights |
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| CN117848865A (en) | 2024-04-09 |
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