CN114412879A - Hydraulic cylinder fatigue performance test equipment and test method - Google Patents
Hydraulic cylinder fatigue performance test equipment and test method Download PDFInfo
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- CN114412879A CN114412879A CN202210308555.7A CN202210308555A CN114412879A CN 114412879 A CN114412879 A CN 114412879A CN 202210308555 A CN202210308555 A CN 202210308555A CN 114412879 A CN114412879 A CN 114412879A
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- 238000011056 performance test Methods 0.000 title claims abstract description 16
- 238000010998 test method Methods 0.000 title abstract description 4
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims description 12
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 abstract description 92
- 238000012360 testing method Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- RRLHMJHRFMHVNM-BQVXCWBNSA-N [(2s,3r,6r)-6-[5-[5-hydroxy-3-(4-hydroxyphenyl)-4-oxochromen-7-yl]oxypentoxy]-2-methyl-3,6-dihydro-2h-pyran-3-yl] acetate Chemical compound C1=C[C@@H](OC(C)=O)[C@H](C)O[C@H]1OCCCCCOC1=CC(O)=C2C(=O)C(C=3C=CC(O)=CC=3)=COC2=C1 RRLHMJHRFMHVNM-BQVXCWBNSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
- F16F6/005—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid using permanent magnets only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/06—Magnetic or electromagnetic
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Abstract
The invention relates to the technical field of hydraulic oil cylinder testing, in particular to a hydraulic oil cylinder fatigue performance test device and a test method, which comprises a fixed support, wherein the upper end of the fixed support is clamped with a connecting part, a supporting device is arranged in the connecting part, and the top of the fixed support is provided with a detection device; the existing detection device also has the following problems: the device can not fix hydraulic oil cylinders with different specifications, so that the fixing effect on the hydraulic oil cylinders can not be ensured; the device cannot ensure the uniformity of extrusion force applied to the telescopic end of the hydraulic oil cylinder and cannot quickly detect the fatigue resistance of the hydraulic oil cylinder; the clamping device can clamp and fix the hydraulic oil cylinder in a circumferential multi-direction manner, so that the hydraulic oil cylinders with different specifications can be fixed; the invention can increase the bearing weight of the hydraulic oil cylinder according to the test requirement to simulate different working states of the hydraulic oil cylinder, thereby being convenient for rapidly detecting the fatigue resistance of the hydraulic oil cylinder.
Description
Technical Field
The invention relates to the technical field of hydraulic oil cylinder testing, in particular to a hydraulic oil cylinder fatigue performance test device and a test method.
Background
The hydraulic cylinder is a hydraulic actuating element for converting hydraulic energy into mechanical energy, the hydraulic cylinder generally adopts hydraulic oil as a hydraulic medium to drive an actuating end of the hydraulic cylinder to reciprocate, and the hydraulic cylinder has no transmission gap and moves stably. Generally, hydraulic cylinders with different thrust can be used according to different bearing weights, and in the application of small bearing weight, materials can be driven through small hydraulic cylinders.
After the general small hydraulic cylinder is manufactured, the fatigue resistance performance needs to be tested so as to ensure the reliability of the small hydraulic cylinder in later use; when the existing hydraulic cylinder is subjected to fatigue testing, a type test is usually adopted, and the type test easily consumes more power.
To the problem of consuming excessive power when above-mentioned pneumatic cylinder detects, prior art has proposed corresponding solution: chinese patent publication No. CN103939421B discloses a fatigue testing method and device for hydraulic cylinders, in which a signal generator generates an alternating signal, which is acted on an electrohydraulic servo valve through a servo amplifier, so that the electrohydraulic servo valve makes hydraulic oil pass through oil inlet and outlet ports of the hydraulic cylinder, respectively, and then the left and right sides of a piston in the hydraulic cylinder generate pressure alternating changes, so as to simulate the reciprocating motion of the hydraulic cylinder under the load action, and further verify the reliability of the hydraulic cylinder.
The detection device related to the above patent also has the following problems: 1. the device passes through the fixed bolster to be fixed hydraulic cylinder, and the fixed bolster can't be adjusted according to hydraulic cylinder's size and dimension, if need fix the hydraulic cylinder of equidimension not, can't ensure the fixed effect to hydraulic cylinder through the fixed bolster, consequently hydraulic cylinder takes place to rock easily at flexible in-process to influence easily and detect the precision, and the hydraulic cylinder in the device can't install fast and pull down.
2. Testing arrangement in the above-mentioned patent passes through hydraulic oil and tests hydraulic cylinder, and can't ensure the degree of consistency of the extrusion force that applies hydraulic cylinder's flexible end through hydraulic oil to hydraulic cylinder's flexible end can't carry out vertical motion along the cylinder in-process, thereby hydraulic cylinder lacks stability when testing, consequently the fatigue resistance ability of unable accurate detection hydraulic cylinder, thereby can't ensure the reliability in hydraulic cylinder later stage.
Disclosure of Invention
In order to solve the problems, the invention provides a hydraulic cylinder fatigue performance test device which comprises a fixed support, wherein a connecting part is clamped at the upper end of the fixed support, a supporting device is installed in the connecting part, and a detection device is arranged at the top of the fixed support.
The standing groove has been seted up at fixing support upper end middle part, and connecting portion joint is in the standing groove, and fixing support's top bilateral symmetry is provided with two pars contractilis, and one side that fixing support was kept away from to two pars contractilis is connected with detection device jointly.
The supporting device comprises a mounting hole formed in the middle of the upper end of the connecting portion, a supporting base is arranged at the bottom of the mounting hole, four stepping grooves communicated with the mounting hole are uniformly formed in the connecting portion in the circumferential direction, four pushing grooves communicated with the stepping grooves are uniformly formed in the connecting portion in the circumferential direction, a clamping block is arranged in the pushing grooves in a sliding mode, a jacking elastic piece is arranged between one side, close to the mounting hole, of the clamping block and the inner wall of each pushing groove, a push rod is arranged on one side, close to the mounting hole, of the clamping block, and a abutting piece arranged in the stepping groove in a sliding mode is arranged at one end, far away from the clamping block, of the push rod; the supporting device supports against the outer side of the hydraulic oil cylinder through the plurality of supporting parts, and can clamp and fix the hydraulic oil cylinder circumferentially in a multidirectional mode to prevent the hydraulic oil cylinder from shaking in the detection process to influence the detection precision.
The detection device comprises a positioning cylinder arranged between one sides of two telescopic parts far away from a fixed support, a plurality of rectangular weighting blocks are arranged in the positioning cylinder in a sliding manner, an annular pad is arranged at the bottom of each rectangular weighting block, a linkage plate is arranged at the top of the positioning cylinder, a threaded rod is arranged in the middle of the upper end of the linkage plate in a threaded connection manner, the bottom of the threaded rod is of a conical structure, vertical sliding grooves are symmetrically formed in the left and right sides of the outer wall of the threaded rod, the threaded rod penetrates through the rectangular weighting block in a threaded connection mode, the middle part of the upper end of the linkage plate is rotatably provided with an execution ring, the inner wall of the execution ring is bilaterally symmetrically provided with two key teeth which are arranged in the vertical sliding chute in a sliding mode, a plurality of gear teeth are uniformly arranged on the outer wall of the execution ring in the circumferential direction, an intermittent motor is mounted at the upper end of the linkage plate and positioned on the left side of the execution ring, and a rotating gear meshed with the gear teeth is sleeved on an output shaft of the intermittent motor; the detection device can apply downward pressure to the hydraulic oil cylinder through the rectangular weight block so as to simulate the working state of the hydraulic oil cylinder during bearing, and the bearing weight of the hydraulic oil cylinder can be increased according to the test requirement.
According to a preferable technical scheme, a threaded hole is formed in the joint of the rectangular weight and the threaded rod, the upper side and the lower side of the threaded hole are of a conical structure, sliding parts which are staggered with the limiting strips are installed on the left side wall and the right side wall of the rectangular weight at equal intervals, the sliding parts are connected with the limiting strips in a sliding mode, a plurality of magnetic balls are uniformly arranged on the outer wall of each sliding part in a rotating mode, and a plurality of bulges are uniformly arranged on the outer wall of each magnetic ball.
As a preferred technical scheme of the invention, the fixed end of the telescopic part and one side of the telescopic end of the telescopic part, which is far away from the positioning cylinder, are both provided with a support piece, the bottom of the support piece on the fixed end of the telescopic part is provided with a fixed motor through a motor base, an output shaft of the fixed motor penetrates through the support piece to be connected with a rotating screw rod rotatably arranged on the support piece, and the upper side of the rotating screw rod penetrates through the support piece on the telescopic end of the telescopic part in a threaded connection manner; can drive a location section of thick bamboo rebound through the pars contractilis for the stiff end of pars contractilis and the distance adjustment between its flexible end are the biggest, thereby ensure to leave sufficient space between a location section of thick bamboo and the fixing support, are convenient for will install hydraulic cylinder's connecting portion and install in the standing groove.
As a preferred technical scheme of the invention, a reciprocating moving plate is slidably arranged between a fixed end of a telescopic part and a telescopic end of the telescopic part, a plurality of jacks penetrating through the telescopic part are uniformly formed in the reciprocating moving plate from top to bottom, a limiting plate inserted in the uppermost jack is arranged on one side, away from the middle part of a fixed support, of the fixed end of the telescopic part, a push plate is arranged on one side, away from the middle part of the fixed support, of the limiting plate, two fixed hydraulic cylinders are symmetrically arranged at the upper end of the fixed support in a left-right mode by taking a placing groove as a center, and the telescopic ends of the fixed hydraulic cylinders are connected with the telescopic part; the distance between the positioning cylinder and the fixed support can be adjusted through the telescopic part, so that the hydraulic oil cylinder can be conveniently mounted and dismounted.
As a preferable technical scheme of the invention, a plurality of limiting strips are arranged on the left side wall and the right side wall of the positioning cylinder at equal intervals from front to back, and a baffle is arranged at the bottom of each limiting strip.
As a preferred technical scheme of the invention, metal strips are respectively arranged on the front side wall and the rear side wall of the limiting strip between two adjacent sliding parts, and the metal strips and the magnetic balls are attracted through magnetism; the magnetic ball of slider outer wall on the rectangle weight can slow down the slew velocity of slider through its magnetic attraction between with the metal strip, thereby and the arch through the magnetic ball outer wall can increase its and slider between frictional force increase magnetic ball pivoted resistance, thereby also can further slow down the slew velocity of slider, the rectangle weight of being convenient for puts gently at the hydraulic cylinder top, avoid the rectangle weight to drop suddenly at hydraulic cylinder's flexible end top and take place the skew, thereby can ensure that hydraulic cylinder's flexible end top atress is even when detecting.
As a preferred technical scheme of the invention, the top of the placing groove is a wedge-shaped surface which gradually inclines towards the middle of the fixed support from top to bottom, the inner wall of the placing groove is a stepped groove which gradually approaches towards the middle of the fixed support from top to bottom, two sliding grooves are symmetrically arranged in the fixed support in a left-right sliding mode by taking the placing groove as a center, a stepped block matched with the notch is arranged in each sliding groove, one side of each stepped block, which is far away from the connecting part, is rotatably provided with an adjusting screw rod, and one end of the adjusting screw rod, which is far away from the stepped block, penetrates through the fixed support in a threaded connection mode and then extends to the outside; step and the breach of connecting portion lower extreme on through the ladder piece are corresponding, press connecting portion downwards again and lean on the ladder piece to strutting arrangement cooperation standing groove supports fixedly connecting portion.
As a preferred technical scheme of the invention, the abutting piece is of an arc-shaped structure, a rubber pad is arranged on one side of the abutting piece away from the push rod, and a corrugated structure is arranged on one side of the rubber pad away from the abutting piece; the rubber pad can take place elastic deformation under the exogenic action, and the ripple structure of rubber pad inner wall can strengthen and the hydraulic cylinder between the frictional force to reinforcing is to hydraulic cylinder's centre gripping effect.
As a preferred technical scheme of the invention, the outer wall of the key tooth is rotationally provided with a plurality of balls, and each ball is rotationally connected with the inner wall of the vertical chute; can reduce the frictional force between key tooth and the perpendicular spout through the ball to be convenient for carry out the ring and pass through the smooth and easy degree that can ensure that the threaded rod reciprocated when the key tooth drives the threaded rod and rotates.
In addition, the invention provides a fatigue performance test method of a hydraulic oil cylinder, which comprises the following steps: the first step is as follows: installing a hydraulic oil cylinder: the hydraulic oil cylinder to be detected is placed on the connecting portion, then the connecting portion with the hydraulic oil cylinder is inserted into the placing groove, and the hydraulic oil cylinder is clamped and fixed in a multi-azimuth mode through the supporting device.
The second step is that: placing a weighting block: the detection device is used for placing the weight on the top of the telescopic end of the hydraulic oil cylinder according to the detection requirement, then the hydraulic oil cylinder is opened, and the weight is jacked up in a reciprocating mode through the hydraulic oil cylinder so that the fatigue resistance of the hydraulic oil cylinder can be detected.
The third step: taking down a hydraulic oil cylinder: and after the hydraulic oil cylinder is detected, taking down the hydraulic oil cylinder from the supporting device.
The invention has the beneficial effects that: 1. the supporting device provided by the invention can be used for clamping and fixing the hydraulic oil cylinder in a circumferential multi-direction manner by simultaneously abutting the plurality of abutting pieces on the outer side of the hydraulic oil cylinder, so that the hydraulic oil cylinders with different sizes can be fixed, the detection precision is prevented from being influenced by the shaking of the hydraulic oil cylinder in the detection process, and the hydraulic oil cylinder is convenient to mount and dismount; the detection device can apply downward pressure to the hydraulic oil cylinder through the rectangular weighting block, can ensure the uniformity of the pressure applied to the hydraulic oil cylinder, can ensure the stability of the telescopic end of the hydraulic oil cylinder in the telescopic process so as to simulate the working state of the hydraulic oil cylinder during bearing, and can increase the bearing weight of the hydraulic oil cylinder according to the test requirement, thereby being convenient for rapidly detecting the fatigue resistance of the hydraulic oil cylinder.
2. The telescopic part arranged in the hydraulic cylinder positioning device can move upwards or downwards through the positioning cylinder, so that the distance between the positioning cylinder and the fixed support can be conveniently adjusted, the connecting part provided with the hydraulic cylinder can be conveniently installed in the placing groove, and the hydraulic cylinder to be detected can be conveniently installed and detached.
3. The magnetic ball arranged in the invention can slow down the falling speed of the sliding part through the magnetic attraction between the magnetic ball and the metal strip, and the friction between the magnetic ball and the sliding part can be increased through the bulge on the outer wall of the magnetic ball, so that the rotating resistance of the magnetic ball is increased, the falling speed of the sliding part can be further slowed down, the rectangular weight block can be conveniently and lightly placed at the top of the hydraulic oil cylinder, the rectangular weight block is prevented from suddenly dropping on the top of the telescopic end of the hydraulic oil cylinder to generate deviation, and the top of the telescopic end of the hydraulic oil cylinder can be ensured to be uniformly stressed while being detected.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic perspective view of the present invention.
Figure 2 is a schematic view in partial cross-section of a fixed support and support device of the present invention.
Fig. 3 is a partial enlarged view of the present invention at B of fig. 2.
Fig. 4 is an initial state view of the supporting device of the present invention.
Fig. 5 is a top view of the present invention.
FIG. 6 is a cross-sectional view taken along line E-E of FIG. 5 of the present invention.
Fig. 7 is a cross-sectional view of the support base of the present invention.
Fig. 8 is a schematic view in partial cross-section of the detection device of the present invention.
Fig. 9 is a partial enlarged view at T of fig. 8 of the present invention.
Fig. 10 is a schematic view in partial cross-section of a threaded rod and an implement ring of the present invention.
In the figure: 1. a fixed support; 11. a placement groove; 111. a stepped groove; 112. a step block; 113. adjusting the screw rod; 12. a telescopic part; 121. moving the plate in a reciprocating manner; 122. a limiting plate; 123. pushing the plate; 124. fixing a hydraulic cylinder; 2. a connecting portion; 21. a support base; 3. a support device; 31. a yielding groove; 32. a push groove; 33. a clamping block; 34. a top-extending elastic member; 35. a push rod; 36. an abutting piece; 4. a detection device; 41. a positioning cylinder; 411. a limiting strip; 412. a baffle plate; 413. a metal strip; 42. a rectangular weighting block; 421. a slider; 422. a magnetic ball; 43. a linkage plate; 44. a threaded rod; 45. a vertical chute; 46. an execution ring; 47. a key tooth; 48. gear teeth; 49. an intermittent motor; 40. a rotating gear; 5. a hydraulic cylinder.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Referring to fig. 1, 2 and 5, the test equipment for the fatigue performance test of the hydraulic cylinder comprises a fixed support 1, wherein a connecting part 2 is clamped at the upper end of the fixed support 1, a supporting device 3 is installed in the connecting part 2, and a detection device 4 is arranged at the top of the fixed support 1.
Referring to fig. 1, 2 and 6, a placing groove 11 is formed in the middle of the upper end of a fixed support 1, a connecting portion 2 is clamped in the placing groove 11, two notches are formed in the bottom of the connecting portion 2 in a bilateral symmetry manner, the top of the placing groove 11 is a wedge-shaped surface which gradually inclines towards the middle of the fixed support 1 from top to bottom, the inner wall of the placing groove 11 is a stepped groove 111 which gradually approaches towards the middle of the fixed support from top to bottom, two sliding grooves are formed in the fixed support 1 in a bilateral symmetry manner by taking the placing groove 11 as a center, a stepped block 112 matched with the notch is arranged in each sliding groove, an adjusting screw 113 is rotatably arranged on one side of each stepped block 112 away from the connecting portion 2, and one end of the adjusting screw 113 away from the stepped block 112 penetrates through the fixed support 1 in a threaded connection manner and then extends to the outside; when the connecting part 2 is installed in the placing groove 11, the connecting part 2 can be guided by the wedge-shaped surface at the top of the placing groove 11, so that the connecting part 2 can be conveniently and accurately installed in the placing groove 11, then the adjusting screw 113 is rotated, the stepped block 112 is driven by the adjusting screw 113 to move in the opposite direction or in the reverse direction, so that the step on the stepped block 112 corresponds to the notch at the lower end of the connecting part 2, then the connecting part 2 is pressed downwards and abutted against the stepped block 112, so that the supporting device 3 is matched with the placing groove 11 to support and fix the connecting part 2, two expansion parts 12 are symmetrically arranged at the top of the fixing support 1 in the left-right direction, and one sides of the two expansion parts 12, which are far away from the fixing support 1, are jointly connected with the detection device 4; a reciprocating moving plate 121 is arranged between the fixed end of the telescopic part 12 and the telescopic end of the telescopic part in a sliding manner, a plurality of jacks penetrating through the telescopic part 12 are uniformly formed in the reciprocating moving plate 121 from top to bottom, a limiting plate 122 inserted in the uppermost jack is arranged on one side, away from the middle part of the fixed support 1, of the fixed end of the telescopic part 12, a push plate 123 is installed on one side, away from the middle part of the fixed support 1, of the limiting plate 122, two fixed hydraulic cylinders 124 are symmetrically arranged at the left and right sides of the upper end of the fixed support 1 by taking the placing groove 11 as a center, and the telescopic ends of the fixed hydraulic cylinders 124 are connected with the telescopic part 12; in the initial state, the telescopic part 12 is in the contracted state, and the distance between the fixed end of the telescopic part 12 and the telescopic end thereof is the minimum (as shown in fig. 6); when the device works, the limiting plate 122 is firstly pulled out of the jack through the push plate 123, then the fixed hydraulic cylinder 124 is opened, the fixed hydraulic cylinder 124 drives the telescopic end of the telescopic part 12 to expand upwards, the detection device 4 can be driven to move upwards through the telescopic part 12, so that the distance between the fixed end of the telescopic part 12 and the telescopic end of the telescopic part is adjusted to be the maximum, thereby ensuring that enough space is left between the detection device 4 and the fixed support 1, facilitating the installation of the connecting part 2 provided with the hydraulic oil cylinder 5 in the placing groove 11, then the cylinder 111 is opened, the telescopic end of the cylinder 111 is inserted on the side wall of the connecting part 2, facilitating the fixation of the connecting part 2, avoiding the connecting part 2 from falling off from the placing groove 11, facilitating the installation of the hydraulic oil cylinder 5, then the limiting plate 122 is inserted into the jack again through the push plate 123, facilitating the auxiliary fixation of the telescopic part 12 by matching with the fixed hydraulic cylinder 124, thereby being convenient for the detection device 4 to detect the hydraulic oil cylinder 5.
Referring to fig. 3, 4 and 7, the supporting device 3 includes a mounting hole formed in the middle of the upper end of the connecting portion 2, a supporting base 21 is disposed at the bottom of the mounting hole, when the hydraulic cylinder 5 is inserted into the mounting hole and then abuts against the supporting base 21, the hydraulic cylinder 5 can be primarily supported by the supporting base 21, so that the hydraulic cylinder 5 and the connecting portion 2 are in a vertical state, four abdicating grooves 31 communicated with the mounting hole are uniformly formed in the inner circumference of the connecting portion 2, four pushing grooves 32 communicated with the abdicating grooves 31 are uniformly formed in the inner circumference of the connecting portion 2, a clamping block 33 is slidably disposed in the pushing grooves 32, and the bottom of one side of the clamping block 33 away from the mounting hole is in a wedge-shaped structure matched with a wedge surface at the top of the placing groove 11; a jacking elastic piece 34 is arranged between one side of the clamping block 33 close to the mounting hole and the inner wall of the pushing groove 32, a push rod 35 is arranged on one side of the clamping block 33 close to the mounting hole, and a propping piece 36 which is arranged in the abdicating groove 31 in a sliding manner is arranged at one end of the push rod 35 far away from the clamping block 33; the abutting piece 36 is of an arc-shaped structure, a rubber pad is arranged on one side of the abutting piece 36 away from the push rod 35, and a corrugated structure is arranged on one side of the rubber pad away from the abutting piece 36; the rubber pad can elastically deform under the action of external force, and the corrugated structure on the inner wall of the rubber pad can enhance the friction force between the rubber pad and the hydraulic oil cylinder 5 so as to enhance the clamping effect on the hydraulic oil cylinder 5; under initial condition, connecting portion 2 is located the upside of standing groove 11, and joint piece 33 is located the one side of keeping away from the mounting hole in promoting groove 32 under the effect of top extension elastic component 34 this moment to keep away the piece 36 and be located the one side that is close to promoting groove 32 in the groove 31 of stepping down, so that place the hydraulic cylinder 5 that will wait to detect in the mounting hole (as shown in fig. 4).
When the hydraulic oil cylinder clamping device works, firstly, a hydraulic oil cylinder 5 to be detected is placed in a mounting hole, then, the hydraulic oil cylinder 5 is pressed downwards and is abutted against a supporting base 21, the hydraulic oil cylinder 5 can be supported through the supporting base 21, so that the hydraulic oil cylinder 5 and a connecting part 2 are in a vertical state, then, the connecting part 2 is installed in a placing groove 11, at the moment, a clamping block 33 is abutted against the upper end edge of the placing groove 11, then, the connecting part 2 is continuously pressed into the placing groove 11, so that the clamping block 33 is contracted towards one side close to the mounting hole under the action of the placing groove 11, the clamping block 33 drives a propping piece 36 and a rubber pad to be abutted against the outer wall of the hydraulic oil cylinder 5 through a push rod 35, a plurality of clamping blocks 33 arranged outside the connecting part 2 can drive the propping pieces 36 to be abutted against the outer side of the hydraulic oil cylinder 5 (as shown in figure 3) at the same time, and therefore, the hydraulic oil cylinder 5 can be clamped and fixed in circumferential directions at different heights, so as to prevent the hydraulic oil cylinder 5 from shaking in the detection process to influence the detection precision; during the period, the perpendicularity between the hydraulic oil cylinder 5 and the connecting part 2 can be ensured through the supporting base 21 in the mounting hole, so that the uniformity of the pressure borne by the hydraulic oil cylinder 5 can be ensured, the telescopic end of the hydraulic oil cylinder 5 can be ensured to vertically move up and down when being telescopic, the extrusion force borne by the hydraulic oil cylinder 5 due to the inclination can be avoided, and the hydraulic oil cylinder 5 can be subjected to multi-azimuth limiting and protection by matching with a plurality of abutting pieces 36 on the outer side of the hydraulic oil cylinder 5; meanwhile, the clamping block 33 is abutted against the inner walls of the stepped grooves 111 with different heights, so that the distance between the clamping block 33 and the hydraulic oil cylinder 5 can be correspondingly adjusted, and the clamping block 33 and the abutting piece 36 can conveniently limit and fix the hydraulic oil cylinders 5 with different diameters in multiple directions; when hydraulic cylinder 5 detects and need pull down after accomplishing, with hydraulic cylinder 5 upwards drawing, hydraulic cylinder 5 through with support the frictional force between the tight piece 36 can drive whole connecting portion 2 and extract from standing groove 11, joint piece 33 loses the conflict effort of ladder groove 111 inner wall this moment, thereby joint piece 33 drives push rod 35 and supports tight piece 36 and resume to initial condition under the effect that the elastic component 34 was stretched in the top to be convenient for take off hydraulic cylinder 5 that will detect the completion.
Referring to fig. 6, 8, 9 and 10, the detecting device 4 includes a positioning cylinder 41 installed between two telescopic parts 12, a plurality of rectangular weight blocks 42 are slidably disposed in the positioning cylinder 41, an annular pad 421 is installed at the bottom of each rectangular weight block 42 to prevent the rectangular weight blocks 42 from indenting the telescopic ends of the hydraulic cylinders 5, a linkage plate 43 is disposed at the top of the positioning cylinder 41, a threaded rod 44 is disposed in the middle of the upper end of the linkage plate 43 in a threaded connection manner, a plurality of limiting strips 411 are installed on the left and right side walls of the positioning cylinder 41 at equal intervals from front to back, and a baffle plate 412 is installed at the bottom of each limiting strip 411; vertical sliding grooves 45 are symmetrically formed in the outer wall of the threaded rod 44 in the left-right mode, the threaded rod 44 penetrates through the rectangular weighting block 42 in a threaded connection mode, an execution ring 46 is rotatably arranged in the middle of the upper end of the linkage plate 43, two key teeth 47 which are slidably arranged in the vertical sliding grooves 45 are symmetrically arranged in the left-right mode on the inner wall of the execution ring 46, a plurality of balls are rotatably arranged on the outer wall of each key tooth 47, and each ball is rotatably connected with the inner wall of the vertical sliding groove 45; the friction force between the key teeth 47 and the vertical sliding groove 45 can be reduced through the balls, so that the smooth degree of the up-and-down movement of the threaded rod 44 can be ensured while the execution ring 46 drives the threaded rod 44 to rotate through the key teeth 47; it should be noted that the execution ring 46 does not contact with the threaded rod 44, and the execution ring 46 can only drive the threaded rod 44 to rotate through the cooperation between the key teeth 47 and the vertical sliding groove 45; a plurality of gear teeth 48 are uniformly arranged on the outer wall of the execution ring 46 in the circumferential direction, an intermittent motor 49 is installed at the upper end of the linkage plate 43, the intermittent motor 49 is located on the left side of the execution ring 46, and a rotating gear 40 meshed with the gear teeth 48 is sleeved on an output shaft of the intermittent motor 49.
The bottom of the threaded rod 44 is of a conical structure, and the upper side of the threaded rod 44 is not provided with threads, so that when the threaded rod 44 moves downwards to the lowest position, the upper side of the threaded rod 44 only rotates with the linkage plate 43, and the bottom of the threaded rod 44 at the moment cannot contact with the telescopic end of the hydraulic oil cylinder 5.
The connection part of the rectangular weight 42 and the threaded rod 44 is provided with a threaded hole, the upper side and the lower side of the threaded hole are both conical structures, the threaded rod 44 is conveniently guided into the threaded hole in the rectangular weight 42 when moving downwards through the conical structures, so that the accuracy of inserting the threaded rod 44 into the threaded hole is improved, sliding parts 421 staggered with the limiting strips 411 are arranged on the left side wall and the right side wall of the rectangular weight 42 at equal intervals, the sliding parts 421 are connected with the limiting strips 411 in a sliding manner, a plurality of magnetic balls 422 are uniformly and rotatably arranged on the outer wall of the sliding parts 421, a plurality of bulges are uniformly arranged on the outer wall of the magnetic balls 422, when the magnetic balls 422 rotate, the rotating resistance of the magnetic balls 422 can be increased by increasing the friction force between the magnetic balls 422 and the sliding parts 421 through the bulges, and therefore the descending speed of the sliding parts 421 can be further reduced; metal strips 413 are arranged on the front side wall and the rear side wall of the limiting strip 411 between two adjacent sliding parts 421, and the metal strips 413 and the magnetic balls 422 are attracted through magnetism; the slider 421 can be buffered by the magnetic force between the magnetic ball 422 and the metal strip 413, so that the downward movement speed of the slider 421 and the rectangular weight 42 is reduced.
When the device works specifically, a hydraulic oil cylinder 5 to be detected is opened, the telescopic end of the hydraulic oil cylinder 5 extends upwards into a positioning cylinder 41, then an intermittent motor 49 is opened, the intermittent motor 49 drives an execution ring 46 to rotate intermittently through a rotating gear 40 and a gear tooth 48, the execution ring 46 drives a threaded rod 44 to rotate intermittently through a key tooth 47 and a vertical sliding groove 45, so that the threaded rod 44 moves upwards under the action of a linkage plate 43, meanwhile, the threaded rod 44 rotates to be screwed out of the rectangular weighting block 42 at the lowest side in the positioning cylinder 41, the rectangular weighting block 42 at the lowest side of the threaded rod 44 is firstly separated from the threaded rod 44, the separated rectangular weighting block 42 falls downwards along a limiting strip 411 under the action of gravity, and during the period, because the magnetic ball 422 and a metal strip 413 on the limiting strip 411 are attracted through magnetism, when a sliding piece 421 moves downwards along with the rectangular weighting block 42, the speed of the downward movement of the rectangular weight 42 can be reduced by matching the magnetic ball 422 with the metal strip 413, so that the rectangular weight 42 can be lightly placed at the top of the telescopic end of the hydraulic oil cylinder 5, the phenomenon that the rectangular weight 42 suddenly drops on the top of the telescopic end of the hydraulic oil cylinder 5 to generate deviation is avoided, the stress of the top of the telescopic end of the hydraulic oil cylinder 5 is uniform while detection is carried out, then the hydraulic oil cylinder 5 is stretched and retracted back and forth to detect the fatigue resistance performance of the hydraulic oil cylinder 5, during the period, the rectangular weight 42 at the top of the telescopic end of the hydraulic oil cylinder 5 can apply downward pressure on the hydraulic oil cylinder 5 to simulate the working state of the hydraulic oil cylinder 5 during bearing, when the bearing weight of the hydraulic oil cylinder 5 needs to be increased, the telescopic end of the hydraulic oil cylinder 5 extends upwards into the positioning cylinder 41, and then the intermittent motor 49 drives the execution ring 46 and the threaded rod 44 to continue to rotate through the rotating gear 40 and the gear teeth 48, so that the rectangular weight 42 at the lowest side of the threaded rod 44 falls off the threaded rod 44 again and falls on top of the telescopic end of the hydraulic ram 5, thereby increasing the load bearing capacity of the hydraulic ram 5 according to the test requirements.
After the hydraulic oil cylinder 5 detects, the telescopic end of the hydraulic oil cylinder 5 jacks the rectangular weighting block 42 at the top of the hydraulic oil cylinder 5 into the positioning cylinder 41, then the intermittent motor 49 drives the execution ring 46 to rotate reversely through the rotating gear 40 and the gear teeth 48, the execution ring 46 drives the threaded rod 44 to rotate reversely, so that the threaded rod 44 moves downwards, at the moment, the rectangular weighting block 42 remaining on the outer wall of the threaded rod 44 cannot move downwards under the effect of threaded connection, so that the bottom of the threaded rod 44 moves to the rectangular weighting block 42 at the top of the hydraulic oil cylinder 5 and is inserted into the threaded hole in the middle of the rectangular weighting block 42 in a rotating mode, then the execution ring 46 drives the threaded rod 44 to continue to rotate, so that the threaded rod 44 can drive the rectangular weighting block 42 on the outer wall to move upwards through threaded fit, so that the plurality of rectangular weighting blocks 42 are placed neatly on the threaded rod 44, and convenient to reuse.
In addition, the invention provides a fatigue performance test method of the hydraulic oil cylinder 5, which comprises the following steps: the first step is as follows: and (3) installing a hydraulic oil cylinder 5: at first will wait to detect hydraulic cylinder 5 and place on connecting portion 2, then open fixed motor 122, fixed motor 122 drives pars contractilis 12 through rotating screw rod 123 and upwards expands, can drive through pars contractilis 12 and leave sufficient space between a location section of thick bamboo 41 and the fixing support 1, will install connecting portion 2 of hydraulic cylinder 5 again and insert to the standing groove 11 in to it is fixed through carrying out the diversified centre gripping of circumference to hydraulic cylinder 5.
The second step is that: placing a weighting block: open hydraulic cylinder 5 that awaits measuring, hydraulic cylinder 5's flexible end upwards extends to in the location section of thick bamboo 41, open intermittent machine 49 afterwards, intermittent machine 49 drives executive ring 46 through rotating gear 40 and teeth of a cogwheel 48 and rotates, executive ring 46 drives threaded rod 44 and rotates, thereby threaded rod 44 upwards moves under linkage plate 43's effect, and simultaneously, threaded rod 44 rotates and will follow the interior back-and-forth spinning of rectangle weighted weight 42 of downside in the location section of thick bamboo 41, make the rectangle weighted weight 42 that is located the downside of threaded rod 44 take place to drop and fall at hydraulic cylinder 5's flexible end top with threaded rod 44 at first, hydraulic cylinder 5 carries out reciprocal flexible in order to detect its fatigue resistance afterwards.
The third step: the hydraulic oil cylinder 5 is taken down: after hydraulic cylinder 5 detects the completion, take off the rectangle weight 42 at its top under hydraulic cylinder 5's the flexible end effect through the drive of threaded rod 44, hydraulic cylinder 5 contracts afterwards, drives the rebound of a location section of thick bamboo 41 through pars contractilis 12 again to take out hydraulic cylinder 5 and connecting portion 2 from standing groove 11 in, then with hydraulic cylinder 5 from connecting portion 2 take out can.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a hydraulic cylinder fatigue performance test equipment, a serial communication port, including fixing support (1), fixing support (1) upper end joint has connecting portion (2), installs strutting arrangement (3) in connecting portion (2), and the top of fixing support (1) is provided with detection device (4), wherein:
a placing groove (11) is formed in the middle of the upper end of the fixed support (1), the connecting part (2) is clamped in the placing groove (11), two telescopic parts (12) are symmetrically arranged on the left and right of the top of the fixed support (1), and one sides, far away from the fixed support (1), of the two telescopic parts (12) are jointly connected with a detection device (4);
the supporting device (3) comprises a mounting hole formed in the middle of the upper end of the connecting portion (2), a supporting base (21) is arranged at the bottom of the mounting hole, four yielding grooves (31) communicated with the mounting hole are uniformly formed in the inner circumferential direction of the connecting portion (2), four pushing grooves (32) communicated with the yielding grooves (31) are uniformly formed in the inner circumferential direction of the connecting portion (2), clamping blocks (33) are arranged in the pushing grooves (32) in a sliding mode, top-extending elastic pieces (34) are arranged between one side, close to the mounting hole, of each clamping block (33) and the inner wall of each pushing groove (32), push rods (35) are arranged on one sides, close to the mounting hole, of the clamping blocks (33), and abutting pieces (36) which are arranged in the yielding grooves (31) in a sliding mode are arranged at one ends, far away from the clamping blocks (33), of the push rods (35);
the detection device (4) comprises a positioning cylinder (41) which is arranged between one sides of two telescopic parts (12) far away from the fixed support (1), a plurality of rectangular weighting blocks (42) are arranged in the positioning cylinder (41) in a sliding manner, an annular pad (421) is arranged at the bottom of each rectangular weighting block (42), a linkage plate (43) is arranged at the top of the positioning cylinder (41), a threaded rod (44) is arranged in the middle of the upper end of the linkage plate (43) in a threaded connection manner, the bottom of the threaded rod (44) is of a conical structure, vertical sliding grooves (45) are symmetrically formed in the left and right of the outer wall of the threaded rod (44), the threaded rod (44) penetrates through the rectangular weighting blocks (42) in a threaded connection manner, an execution ring (46) is rotatably arranged in the middle of the upper end of the linkage plate (43), two key teeth (47) which are arranged in the vertical sliding grooves (45) in a sliding manner are symmetrically arranged in the left and right direction of the inner wall of the execution ring (46), a plurality of gear teeth (48) are uniformly arranged on the outer wall of the execution ring (46) in the circumferential direction, an intermittent motor (49) is installed at the upper end of the linkage plate (43), the intermittent motor (49) is located on the left side of the execution ring (46), and an output shaft of the intermittent motor (49) is sleeved with a rotating gear (40) meshed with the gear teeth (48).
2. The hydraulic cylinder fatigue performance test equipment of claim 1, characterized in that: threaded holes are formed in the connecting positions of the rectangular weighting blocks (42) and the threaded rods (44), the upper side and the lower side of each threaded hole are of conical structures, sliding pieces (421) which are arranged in a staggered mode with the limiting strips (411) are installed on the left side wall and the right side wall of each rectangular weighting block (42) at equal intervals, the sliding pieces (421) are connected with the limiting strips (411) in a sliding mode, the outer wall of each sliding piece (421) is evenly rotated to be provided with a plurality of magnetic balls (422), and the outer wall of each magnetic ball (422) is evenly provided with a plurality of protrusions.
3. The hydraulic cylinder fatigue performance test equipment of claim 1, characterized in that: the telescopic part is characterized in that a reciprocating moving plate (121) is arranged between the fixed end of the telescopic part (12) and the telescopic end of the telescopic part in a sliding mode, a plurality of jacks penetrating through the telescopic part (12) are uniformly formed in the reciprocating moving plate (121) from top to bottom, a limiting plate (122) inserted in the jack on the top is arranged on one side, away from the middle part of the fixed support (1), of the fixed end of the telescopic part (12), a pushing plate (123) is installed on one side, away from the middle part of the fixed support (1), of the limiting plate (122), two fixed hydraulic cylinders (124) are symmetrically arranged on the upper end of the fixed support (1) in a left-right mode by taking the placing groove (11) as a center, and the telescopic ends of the fixed hydraulic cylinders (124) are connected with the telescopic part (12).
4. The hydraulic cylinder fatigue performance test equipment of claim 2, characterized in that: a plurality of spacing strips (411) are installed from front to back on the left and right side wall of a positioning cylinder (41) at equal intervals, and a baffle (412) is installed at the bottom of each spacing strip (411).
5. The hydraulic cylinder fatigue performance test equipment of claim 2, characterized in that: metal strips (413) are arranged on the front side wall and the rear side wall of the limiting strip (411) between the two adjacent sliding parts (421), and the metal strips (413) and the magnetic balls (422) are attracted through magnetism.
6. The hydraulic cylinder fatigue performance test equipment of claim 1, characterized in that: the top of standing groove (11) is the wedge face of slope to fixing support (1) middle part slope gradually from the top down, and the inner wall of standing groove (11) is ladder groove (111) that from the top down draws close to its middle part gradually, slide to have seted up two sliding grooves as central bilateral symmetry with standing groove (11) in fixing support (1), all be provided with in every sliding groove with breach matched with ladder piece (112), one side that connecting portion (2) were kept away from in every ladder piece (112) all rotates and is provided with adjusting screw (113), adjusting screw (113) are kept away from the one end of ladder piece (112) and are passed fixing support (1) back through threaded connection's mode and extend to the external world.
7. The hydraulic cylinder fatigue performance test equipment of claim 1, characterized in that: the abutting piece (36) is of an arc-shaped structure, a rubber pad is arranged on one side, away from the push rod (35), of the abutting piece (36), and a corrugated structure is arranged on one side, away from the abutting piece (36), of the rubber pad.
8. The hydraulic cylinder fatigue performance test equipment of claim 1, characterized in that: the outer wall of the key teeth (47) is provided with a plurality of balls in a rotating mode, and each ball is connected with the inner wall of the vertical sliding groove (45) in a rotating mode.
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Effective date of registration: 20240426 Address after: 221700 Songlou Town Industrial Park, Fengxian County, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Haohe Intelligent Equipment Co.,Ltd. Country or region after: China Address before: 221700 song Lou Zhen Feng Huang Lu Dong, Feng County, Xuzhou City, Jiangsu Province Patentee before: XUZHOU NAIKEDUN MACHINERY MANUFACTURE CO.,LTD. Country or region before: China |