CN114295510B - Linear acceleration performance testing machine for lubricating grease - Google Patents
Linear acceleration performance testing machine for lubricating grease Download PDFInfo
- Publication number
- CN114295510B CN114295510B CN202111369492.8A CN202111369492A CN114295510B CN 114295510 B CN114295510 B CN 114295510B CN 202111369492 A CN202111369492 A CN 202111369492A CN 114295510 B CN114295510 B CN 114295510B
- Authority
- CN
- China
- Prior art keywords
- loading
- bracket
- box
- sliding block
- limiting end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The linear acceleration performance testing machine for the lubricating grease comprises a box body, a loading ejection device and a damping device, wherein a loading spring and a bracket for mounting a lubricating grease sample box are arranged in the box body; the scheme is used for obtaining the acceleration performance of the lubricating grease on a certain metal surface under the condition of linear acceleration to evaluate the mass fraction of the lubricating grease loss, has a simple device principle, is safe and reliable, and provides a powerful tool for researching the use condition of the lubricating grease with abrupt acceleration.
Description
Technical Field
The invention relates to the technical field of lubricating grease acceleration performance test equipment, in particular to a lubricating grease linear acceleration performance test machine.
Background
At present, the common performance index test contents of the lubricating grease mainly comprise viscosity, thixotropy, cone penetration, condensation point, rheological property and the like. The thixotropy, cone penetration and condensation point are all detected in a static environment, the viscosity is detected in an environment of uniform relative motion of lubricating grease in two parts, the rheological property is tested more complicated, and the method mainly comprises a capillary rheometer and a rotary rheometer, and the rotary rheometer is further divided into a stress control type, a strain control type, a torque control type and an interface rheometer.
Along with the development of the precise lubrication technology, the actual demand of quantitatively supplementing lubricating oil according to the real time is gradually increased, for example, grease lubrication parts on a spacecraft need to bear larger acceleration, a plurality of G and even more than ten G, bearing lubricating grease can be thrown to one side, in order to ensure that the lubricating grease can not be thrown away and run off under the condition of high acceleration, acceleration performance test is needed between the lubricating grease and the parts, no relevant instrument is put into use at present, the viscosity is usually estimated by using a viscosity value, the viscosity is the embodiment of the friction force in the lubricating grease, and the rheological property of an interface is used for measuring the rheological property of the lubricating grease, so that test equipment for testing the linear acceleration performance of the lubricating grease is also lacking.
Disclosure of Invention
In order to solve the technical problems, the invention provides a lubricating grease linear acceleration performance testing machine which can be used for measuring rheological parameters between interfaces of lubricating grease and lubricating objects.
The technical scheme adopted by the invention is as follows: a grease linear acceleration performance testing machine, comprising:
the box body is internally provided with a loading spring and a bracket for mounting the lubricating grease sample box, the bracket is mounted in the box body through a sliding rail, the loading spring is positioned at one side of the bracket, and a damping device which has a buffering effect on the bracket which moves rapidly is arranged at one side of the box body away from the loading spring;
the loading ejection device comprises a trigger rod, a loading assembly and a driving mechanism for driving the loading assembly to move, wherein the loading assembly is symmetrically arranged on two sides of a bracket, the loading assembly comprises a loading box and a sliding block, the sliding block is arranged in the loading box through a small spring, the sliding block is provided with a short limiting end and a long limiting end, the long limiting end extends out of the loading box through a hole in the loading box, one side of the long limiting end is provided with a bracket loading surface matched with the bracket, the short limiting end is provided with a trigger inclined surface matched with the trigger rod, the long limiting end is positioned at an overhanging limit position under the pretightening force of the small spring in a state that the trigger inclined surface is not contacted with the trigger rod, and the driving mechanism drives the loading assembly to move; in the state that the trigger inclined plane is contacted with the trigger rod, the trigger rod props against the trigger inclined plane and drives the sliding block to move along the contraction direction of the small spring in the movement of the loading assembly, so that the bracket loading surface of the long limiting end is gradually separated from the bracket, and the bracket is ejected out when the bracket is completely separated.
As a preferred scheme, the damping device comprises dampers positioned at two sides of the sliding rail and a buffer spring sleeved on the sliding rail, the dampers are provided with light spot switches and electromagnets, when the bracket passes through the dampers, the photoelectric switches control the electromagnets to be powered on, and the size of the contact surface of the electromagnets and the bracket and the attraction force of the electromagnets to the bracket are in a direct proportion relation.
As a preferable scheme, the gantry rod with the inverted U-shaped structure is further provided, two free ends of the gantry rod are respectively and symmetrically connected with a screw rod sleeve, the screw rod sleeve is connected with a driving mechanism, and the loading assembly is symmetrically arranged on the inner side surfaces of the two opposite free ends of the gantry rod.
Preferably, the driving mechanism comprises two groups of motors and a screw rod, wherein the screw rod is connected with the screw rod sleeve.
As a preferable scheme, the loading box is also provided with a box cover, the box cover is connected with the loading box through a locking component and encapsulates the small spring and the sliding block in the inner cavity of the loading box, and the outer wall of the loading box is provided with a sliding block hole for the long limiting end to pass through and a triggering rod passing hole for the triggering end on the triggering rod to pass through.
As the preferred scheme, the one end of slider be equipped with little spring holder, little spring mounting is between little spring holder and loading box inner wall, the other end of slider is equipped with short spacing end and long spacing end, wherein is equipped with first direction plane and triggers the inclined plane on the short spacing end, is equipped with the bracket loading face at one side that the long spacing end is close to short spacing end, and the opposite side is equipped with second direction plane and return stroke inclined plane, wherein first direction plane and second direction plane respectively with loading box's inner wall cooperatees the realization the slider is followed in the loading box removes.
As an optimal scheme, a limiting plane matched with a boss in the loading box is further arranged on the sliding block between the short limiting end head and the long limiting end head.
Preferably, the sample box comprises a sample box shell, a low plane and a high plane with height difference are arranged in the inner cavity of the sample box shell, and a metal sheet placing groove is arranged on the high plane.
As a preferable scheme, the bottom of the bracket is provided with a sliding sleeve structure which is matched with the sliding rail.
As an optimal scheme, a reversing switch for reversing the driving mechanism is also arranged in the box body, and when the loading assembly contacts with the reversing switch in movement, a motor in the driving mechanism reversely rotates.
The beneficial effects of the invention are as follows:
the invention provides a testing machine for measuring the acceleration performance of lubricating grease, which is used for obtaining the acceleration performance of the lubricating grease on a certain metal surface under the condition of linear acceleration to evaluate the mass fraction of the lubricating grease loss, has simple device principle, is safe and reliable, and provides a powerful tool for researching the use condition of the lubricating grease with abrupt acceleration.
The specific technical effects are as follows:
firstly, the invention provides a test device for measuring the acceleration performance of lubricating grease through innovation, and the device is of a box-packed structure and is convenient to use, install and carry.
Secondly, the invention provides a test device for measuring the acceleration performance of the lubricating grease through innovation, the principle is simple, the mass of the metal sheet and the lubricating grease on the metal sheet is weighed through a balance before the test, the mass of the metal sheet and the lubricating grease on the metal sheet after the test is weighed again, the mass fraction of the lubricating grease loss is easy to calculate, and the residual rate is used for measuring the acceleration performance of the lubricating grease on the metal sheet. Residual rate=m 1 /m 0 ×100%.
m 0 Metal sheet and grease total mass before experiment
m 1 Total mass of sheet metal and grease after the experiment
Thirdly, according to the scheme, through the innovative structural design, the component with the lubricating grease sample box is released through the structure of the loading ejection device, and the structure is simple and the operation is reliable; the double lead screws are used for driving the bracket to extrude the loading spring, so that bending moment and torque are not generated, and the force is uniform. When the trigger rod acts, the sliding block is contracted inwards, so that the bracket is suddenly released; the loading assembly symmetrically applies loading forces to two sides of the bracket provided with the sample box through the gantry rod, and the loading forces on each side are realized through the cooperation of the pretightening force of the elastic assembly and the sliding block in the bracket, so that the device has the advantages of simple structure and convenience in adjustment; the friction of the abrupt release assembly against the bracket is negligible.
Fourth, through the innovation, the invention provides a bracket capturing assembly, the assembly utilizes the form that a buffer spring and an electromagnet are mutually matched, the electromagnet is controlled by a photoelectric switch, the photoelectric switch is only passed through when the bracket enters a part of the damper, and the buffer spring acts at the moment so as not to enable the bracket to be too fast in speed reduction when being captured. The round angle is arranged in front of the damper, so that errors caused by thermal expansion and cold contraction are avoided, and the bracket is ensured to smoothly enter the damper.
Fourth, through innovation, the adopted sample boxes have the same specification and can be replaced with each other, and the two planes with different heights are arranged at the sample box part, so that the lubricating grease lost in the acceleration test can not return to the metal sheet when the bracket is captured. The bracket is provided with an arc notch, so that the sampling box can be conveniently taken. The shell below the arc-shaped notch is provided with a continuous section of plane, so that the sliding block can be conveniently pressed by the bracket continuously after releasing the bracket and can not pop up again until the bracket leaves the loading assembly. When the loading assembly returns, the guide ramp structure will first contact the carriage and compress the slider again until the loading assembly is ejected after all of the loading assembly has passed the carriage, ready for the next loading of the carriage.
Secondly, through innovation, through the structure of the sliding block, one end of the sliding block is contacted with the loading inner wall through the elastic component, the other side of the sliding block is provided with the short limiting end head and the long limiting end head, the short limiting end head is provided with the first guide plane and the triggering inclined plane, one side surface of the long limiting end head, which is close to the short limiting end head, is provided with the bracket loading surface, the other side of the long limiting end head is provided with the second guide plane and the return inclined plane, the first guide plane and the second guide plane are respectively matched with the inner wall of the loading box to realize that the sliding block moves along the loading box, the structure can well realize the function of loading the bracket, and the structure is simpler, more convenient to use and high in reliability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the inside of the case;
FIG. 3 is a schematic structural view of a bracket;
FIG. 4 is a schematic structural view of a sample cartridge;
FIG. 5 is a schematic diagram of a loading assembly;
FIG. 6 is a schematic view of a slider structure;
FIG. 7 is a schematic view of the slider in a loaded state in contact with the carrier;
fig. 8 is a schematic view of the slide in a disengaged state from the carrier ejection by the trigger lever.
The marks in the figure: 1. the device comprises a box body, 11, a loading spring, 12, a motor, 13, a reversing switch, 14, a box cover, 15, a pin, 16, a light spot switch, 17, a spring seat, 18, a slide mounting hole, 19, a hinge, 2, a stop switch, 20, a power supply, 3, a damper, 31, an electromagnet, 4, a buffer spring, 5, a screw, 6, a slide rail, 7, a loading assembly, 71, a gantry rod, 72, a screw sleeve, 73, a slider box, 74, a trigger rod passing hole, 75, a bolt, 76, a cover plate, 77, a slider, 771, a trigger inclined plane, 772, a first guide plane, 773, a small spring seat, 774, a limit plane, a second guide plane, 776, a return inclined plane, 777, a bracket loading plane, 78, a slider hole, 79, a small spring, 8, a trigger rod, 81, a trigger end, 9, a bracket, 91, a bracket shell, 92, a sliding sleeve structure, 93, an arc notch, 10, a sample box, 101, a sample box shell, 102, a low plane, 103, a high plane, 104 and a metal sheet placing groove.
Detailed Description
The present invention will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
It should be noted that: unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used in the specification and claims of this application, the terms "a," "an," and "the" and similar referents are not to be construed to limit the scope of at least one. The word "comprising" or "comprises", and the like, indicates that elements or items listed thereafter or equivalents thereof may be substituted for elements or items thereof in addition to those listed thereafter or equivalents thereof without departing from the scope of the word "comprising" or "comprising".
The working principle of the scheme is as follows: based on the proposed linear acceleration performance testing machine for lubricating grease, before an experiment, weighing the mass of a metal sheet and lubricating grease on the metal sheet through a balance, clamping the prepared metal sheet in a bracket through a sample box, loading energy to the bracket through the loading ejection device and ejecting the bracket, wherein the process is as follows: the double lead screws are used for driving the bracket to extrude the loading spring, so that bending moment and torque are not generated, and the force is uniform; when the trigger rod acts, the sliding block is contracted inwards, so that the abrupt release of the bracket is realized, and the friction force of the abrupt release component to the bracket is negligible;
then weighing the mass of the metal sheet and the lubricating grease on the metal sheet after the experimentThe mass fraction of grease loss is easily calculated, and the acceleration performance of the grease on the metal sheet is measured by using the residual rate, wherein the residual rate=m 1 /m 0 ×100%.
m 0 Metal sheet and grease total mass before experiment
m 1 -total mass of metal sheet and grease after experiment;
the acceleration performance of the grease on the surface of the metal sheet was evaluated by measuring the fraction of the mass of the grease remaining on the metal sheet to the mass of the grease to be measured on the metal sheet prior to the test.
Example 1,
The detailed structure of the present embodiment is described below with reference to fig. 1 to 8:
as shown in fig. 1-6, a linear acceleration performance testing machine for lubricating grease is provided with a box body 1, wherein a bracket 9 for installing a sample box, a loading spring 11, a trigger rod 8, a loading assembly 7, a driving mechanism for driving the loading assembly 7 to move, a sliding rail 6 and a damping device are arranged in the box body 1, wherein the bracket 9 is arranged in the box body 1 through the sliding rail 6, so that the bracket 9 can freely slide along the sliding rail 6 when being unconstrained, the loading spring 11 is positioned on one side of the bracket 9 and used for providing ejection power, and the damping device is arranged on one side, far away from the loading spring 11, of the box body 1 and used for buffering the bracket 9 which moves rapidly;
secondly, a trigger rod 8, a loading assembly 7, a loading spring 11 and a driving mechanism for driving the loading assembly to move integrally form a loading ejection device for outputting power to the bracket 9, wherein the loading assembly 7 is symmetrically arranged on two sides of the bracket 9 and comprises a loading box 73 and a sliding block 77, the sliding block 77 is arranged in the loading box 73 through a small spring 79, the sliding block 77 is provided with a short limiting end and a long limiting end, the long limiting end extends out of the loading box through a hole in the loading box 73, one side of the long limiting end is provided with a bracket loading surface 777 matched with the bracket 9, the short limiting end is provided with a trigger inclined surface 771 matched with the trigger rod 8, the long limiting end is positioned at an overhanging limit position under the pretightening force of the small spring 79 under the condition that the trigger inclined surface 771 is not contacted with the trigger rod 8, and the driving assembly drives the loading assembly 7 to move, and the bracket loading surface 777 is tightly pressed against the side surface of the bracket 9 and drives the bracket to move along the shrinkage direction of the loading spring 11; in the state that the trigger inclined plane 771 contacts with the trigger rod 8, the trigger end 81 on the trigger rod 8 stretches into the loading box 73 to prop against the trigger inclined plane 771 during the movement of the loading assembly 7, and drives the sliding block 77 to move along the contraction direction of the small spring 79, so that the bracket loading surface 777 of the long limiting end is gradually separated from the bracket 9, and when the bracket is completely separated, the bracket 9 is ejected out under the action of the loading spring 11.
In this embodiment, as shown in fig. 1 and 2, the damping device includes a damper 3 located at two sides of the sliding rail 6 and a buffer spring 4 sleeved on the sliding rail 6, the damper has a light spot switch 16 and an electromagnet 31, when the bracket 9 passes through the damper, the electro-optical switch 16 controls the electromagnet 31 to be powered on, and the contact surface size of the electromagnet 31 and the bracket 9 and the attraction force of the electromagnet to the bracket are in a proportional relation. The structure can be seen from the above: the damping device can be used for capturing the bracket moving at high speed, and the capturing process is as follows: when the bracket is popped up by the loading spring, the bracket is accelerated under the action of the elasticity of the loading spring, and is separated from the loading spring until reaching the limit length of the loading spring, at the moment, the acceleration performance test action of lubricating grease is finished, the photoelectric switch of the damper can be triggered in the process of continuing to move, the electromagnet 31 is powered on, the size of the contact surface of the electromagnet and the bracket and the attraction force of the electromagnet to the bracket are in a direct proportion relation at the moment of powering on the electromagnet 31, however, the bracket 9 still can continue to move forwards for a certain distance, can be contacted with the buffer spring 4 and gradually decelerate until being completely absorbed by the electromagnet, and the capturing process of the damper to the bracket is finished.
In this embodiment, as shown in fig. 3, the bracket is provided with a bracket shell 91, the upper edge of the bracket shell 91 is provided with an arc notch 93, two symmetrical sliding sleeve structures 92 are arranged at the bottom of the bracket shell 91, and the sliding sleeve structures 92 can be matched with sliding rails in the box body, so that the bracket bearing the sample box can freely slide on the sliding rails.
In this embodiment, as shown in fig. 4, the sample box 10 includes a sample box housing 101, a low plane 102 and a high plane 103 with a height difference are disposed in an inner cavity of the sample box housing 101, a metal sheet placement groove 104 is disposed on the high plane 103, a test metal sheet is uniformly coated with 1mm thick grease to be tested and is mounted in the metal sheet placement groove 104, and then the sample box 10 is mounted and clamped in the bracket 9.
As shown in fig. 5, the loading assembly 7 mainly comprises a gantry rod 71, a screw rod sleeve 72, a loading box 73, a sliding block 77 and a small spring 79, in order to facilitate that the loading mechanism can symmetrically apply loading force to two sides of a bracket with the sample box, the gantry rod 71 is provided with an inverted U-shaped structure, two free ends 711 at the lower end of the gantry rod 71 are respectively connected with the screw rod sleeve 72, the screw rod sleeve 72 can be matched with a driving mechanism formed by a screw rod and a motor, and in this embodiment, the following structure is preferable: two groups of motors and screw rods 5 are adopted and are symmetrically arranged on two sides of a bracket 9, wherein each screw rod is connected with an independent motor, and the screw rods and corresponding screw rod sleeves form a rotation connection relationship; the motor outputs power, and the whole loading mechanism is driven to move through the cooperation of the screw rod and the screw rod sleeve 72;
the loading unit integrally formed by the loading box 73, the sliding block 77 and the small spring 79 is symmetrically arranged on the opposite inner sides of the two free ends of the gantry rod 71, wherein the loading box 73 is fixedly connected with the gantry rod 71, the sliding block 77 is installed in the loading box 73 through the elastic component 79, one end of the sliding block 77 extends out of the loading box through a hole in the loading box 73, and one end of the sliding block 77 is positioned at an overhanging limit position through the pretightening force of the small spring 79, at the moment, the extending sliding block end can apply loading force on the side surface of the bracket, and the bracket 9 is synchronously driven to move to one side in the process of driving the loading mechanism 7 by the driving mechanism.
The reversing switch 13 is further arranged on one side in the box body 1, when the loading assembly 7 releases the bracket 9, the loading assembly 7 can continuously move and contact the reversing switch 13, at the moment, the motor 12 is reversed to drive the screw rod 5 to be reversed, the loading assembly 7 moves towards the return stroke, and contacts the stop switch when the loading assembly 7 moves to the end point, and after the stop switch is pressed, a signal is sent to close the motor.
In this embodiment, the loading box 73 is further provided with a cover plate 76, the cover plate 76 is connected with a port of the loading box 73 through a bolt 75 and encapsulates an elastic component 79 and a sliding block 77 in an inner cavity of the loading box, and the outer wall of the loading box 73 is further provided with a trigger rod passing hole 74 and a sliding block hole 78.
As shown in fig. 6, one end of the slider 77 is provided with a small spring seat 773, the small spring 79 is installed between the small spring seat 773 and the inner wall of the loading box 73, the other end of the slider 77 is provided with a short limit end and a long limit end, the short limit end is provided with a first guide plane 772 and a trigger inclined plane 771, one side of the long limit end, which is close to the short limit end, is provided with a bracket loading surface 777, and the other side is provided with a second guide plane 775 and a return inclined plane 776, wherein the first guide plane 772 and the second guide plane 775 are respectively matched with the inner wall of the loading box 73 to realize that the slider 77 moves along the loading box; the slide block 77 between the short limit end and the long limit end is also provided with a limit plane 774 matched with the boss in the loading box 73.
The action process of the sliding block is as follows:
firstly, the sliding block 77 is installed in the loading box 73, the loading box 73 is provided with the cover plate 76, when the loading box is installed, the small springs 79 are sleeved on the two spring seats 773 behind the sliding block 77 and are tightly pressed in proper amount, the small springs 79 and the sliding block 77 can be placed into the loading box together, at the moment, the small springs have certain pretightening force and ensure that the sliding block is in an overhanging limit position, namely the limit plane 774 is tightly attached to one side of a rectangular boss in the loading box, and the rectangular boss also acts as a sliding fit action with the sliding block. Because the loading force is large, the second guide plane 775 with medium length is stressed, and the guide planes are more, so that the sliding block can slide smoothly;
when the motor 12 outputs, the whole loading assembly 7 is driven to move through the cooperation of the screw rod 5 and the screw rod sleeve 72, at the moment, the moving direction is the direction towards the contraction direction of the loading spring, then the bracket loading surface 777 pushes against the side surface of the bracket 9 to drive the bracket to synchronously move, as shown in fig. 7, in the moving process of the loading assembly 7, the triggering inclined surface 771 on the sliding block 77 touches the triggering end 61 on the triggering rod 8, at the moment, the inclined surface on the triggering end 61 is in contact with the triggering inclined surface, the loading assembly 7 continues to move, and because the triggering rod 8 is motionless, the triggering end 61 pushes against the triggering inclined surface 771 and drives the sliding block 77 to contract inwards of the loading box 73, namely, the sliding block 77 moves towards the contraction direction of the small spring 79, the bracket loading surface 777 also synchronously contracts inwards of the loading box 73 until the bracket is completely separated from the side surface of the bracket, as shown in fig. 8, at the moment, the small spring 79 is in a compressed state, the bracket loading surface is separated from the bracket, the bracket is ejected out under the elastic force of the loading spring until the loading assembly 7 is continuously moved until the loading box touches the reversing switch 13, the motor 12 is reversed, and the loading assembly is driven to return to the initial position, and the bracket returns to the original position through the inclined surface 776.
The working process of the testing machine is as follows:
preparing a metal sheet to be tested and lubricating grease to be tested, uniformly pressing the lubricating grease to be tested on the surface of the metal sheet, suggesting that the thickness of the lubricating grease is about 1mm, placing the metal sheet into a metal sheet placing groove 104 of a sample box after weighing the total weight in a balance placed by clamping the metal sheet coated with the lubricating grease by forceps, placing the sample box 10 into a bracket 9, ensuring that the high plane of the sample box is in a buffer spring 4, covering a box cover 14, clicking a power button 20, simultaneously starting a pair of motors 12, driving a lead screw 5 to rotate by the motors 12, starting to work a loading assembly 7 under the action of the lead screw 5 and the lead screw sleeve 72, enabling a side surface of a sliding block 77 to press a bracket shell 91 to move towards a loading spring 11, enabling the loading spring 11 to start to shrink under the assistance of a guide of a spring seat 17, enabling a trigger inclined surface 771 of the sliding block 77 to contact with the tip of a trigger rod 8, starting to compress a small spring 79 to shrink under the action of an inclined plane principle, and enabling the sliding block 77 to shrink inwards until the sliding block 77 and the bracket 9 are separated from each other under the action of the loading spring 11, and rapidly moving along a sliding rail 6. At this time, on the one hand, the loading assembly 7 is in contact with the reversing switch 13 when continuing to move, the motor 12 reverses, and the loading assembly 7 makes a return motion. On the other hand, when the carrier 9 moving at a high speed enters the area of the damper 3 and passes through the photoelectric switch 16, the electromagnet 31 is energized, and the carrier 9 contacts the buffer spring 4, so that the carrier 9 is tightly sucked as the contact area between the electromagnet 31 and the carrier 9 is larger. During the return process of the loading assembly 7, the return inclined plane 776 contacts with the bracket 9, so that the sliding block 77 is contracted again, the sliding block pops up again until reaching the rear of the bracket, the loading assembly 7 continues to move, the loading assembly stops after contacting the stop switch 2, the box cover 14 is opened at the moment, the sample box 10 is taken out, the metal sheet with residual grease is taken out, the box cover is covered, and the power supply 20 is closed. The metal sheet with the residual grease was weighed on a balance. And obtaining experimental data, and if specific acceleration is required to be calculated, calculating the loading force by using the elasticity and the compression distance of the loading spring, and dividing the loading force by the total mass of the bracket and the sample.
It should be noted that while the above describes the invention in terms of embodiments, many other embodiments of the invention are possible. Various modifications and variations of this invention may be apparent to those skilled in the art without departing from the spirit and scope of this invention, and it is intended to cover in the appended claims all such modifications and variations as fall within the true scope of this invention.
Claims (10)
1. A lubricating grease linear acceleration performance testing machine is characterized in that: comprising the following steps:
the box body is internally provided with a loading spring and a bracket for mounting the lubricating grease sample box, the bracket is mounted in the box body through a sliding rail, the loading spring is positioned at one side of the bracket, and a damping device which has a buffering effect on the bracket which moves rapidly is arranged at one side of the box body away from the loading spring;
the loading ejection device comprises a trigger rod, a loading assembly and a driving mechanism for driving the loading assembly to move, wherein the loading assembly is symmetrically arranged on two sides of a bracket, the loading assembly comprises a loading box and a sliding block, the sliding block is arranged in the loading box through a small spring, the sliding block is provided with a short limiting end and a long limiting end, the long limiting end extends out of the loading box through a hole in the loading box, one side of the long limiting end is provided with a bracket loading surface matched with the bracket, the short limiting end is provided with a trigger inclined surface matched with the trigger rod, the long limiting end is positioned at an overhanging limit position under the pretightening force of the small spring in a state that the trigger inclined surface is not contacted with the trigger rod, and the driving mechanism drives the loading assembly to move; in the state that the trigger inclined plane is contacted with the trigger rod, the trigger rod props against the trigger inclined plane and drives the sliding block to move along the contraction direction of the small spring in the movement of the loading assembly, so that the bracket loading surface of the long limiting end is gradually separated from the bracket, and the bracket is ejected out when the bracket is completely separated.
2. The grease linear acceleration performance testing machine according to claim 1, wherein: the damping device comprises dampers positioned on two sides of the sliding rail and a buffer spring sleeved on the sliding rail, the dampers are provided with light spot switches and electromagnets, when the bracket passes through the dampers, the photoelectric switch controls the electromagnets to be electrified, and the size of the contact surface of the electromagnets and the bracket is in direct proportion to the attraction force of the electromagnets to the bracket.
3. The grease linear acceleration performance testing machine according to claim 1, wherein: the loading device is characterized by further comprising a gantry rod with an inverted U-shaped structure, wherein two free ends of the gantry rod are respectively and symmetrically connected with a screw rod sleeve, the screw rod sleeves are connected with a driving mechanism, and the loading assembly is symmetrically arranged on the inner side surfaces of the two free ends of the gantry rod, which are opposite.
4. A grease linear acceleration performance testing machine according to claim 3, wherein: the driving mechanism comprises two groups of motors and a screw rod, wherein the screw rod is connected with the screw rod sleeve.
5. The grease linear acceleration performance testing machine according to claim 1, wherein: the loading box is further provided with a box cover, the box cover is connected with the loading box through a locking assembly and encapsulates the small spring and the sliding block in the inner cavity of the loading box, and the outer wall of the loading box is provided with a sliding block hole for the long limiting end to pass through and a triggering rod passing hole for the triggering end on the triggering rod to pass through.
6. The grease linear acceleration performance testing machine according to claim 1, wherein: one end of the sliding block is provided with a small spring seat, the small spring is installed between the small spring seat and the inner wall of the loading box, the other end of the sliding block is provided with a short limiting end head and a long limiting end head, a first guide plane and a triggering inclined plane are arranged on the short limiting end head, a bracket loading surface is arranged on one side surface of the long limiting end head, which is close to the short limiting end head, the other side of the long limiting end head is provided with a second guide plane and a return inclined plane, and the first guide plane and the second guide plane are respectively matched with the inner wall of the loading box to realize that the sliding block moves in the loading box.
7. The grease linear acceleration performance testing machine according to claim 6, wherein: and a limiting plane matched with a boss in the loading box is also arranged on the sliding block between the short limiting end head and the long limiting end head.
8. The grease linear acceleration performance testing machine according to claim 1, wherein: the sample box comprises a sample box shell, a low plane and a high plane with height difference are arranged in the inner cavity of the sample box shell, and a metal sheet placing groove is arranged on the high plane.
9. The grease linear acceleration performance testing machine according to claim 1, wherein: the bottom of the bracket is provided with a sliding sleeve structure which is matched with the sliding rail.
10. The grease linear acceleration performance testing machine according to claim 1, wherein: the box body is also internally provided with a reversing switch for reversing the driving mechanism, and when the loading assembly contacts with the reversing switch in movement, the motor in the driving mechanism reversely rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111369492.8A CN114295510B (en) | 2021-11-18 | 2021-11-18 | Linear acceleration performance testing machine for lubricating grease |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111369492.8A CN114295510B (en) | 2021-11-18 | 2021-11-18 | Linear acceleration performance testing machine for lubricating grease |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114295510A CN114295510A (en) | 2022-04-08 |
| CN114295510B true CN114295510B (en) | 2023-08-08 |
Family
ID=80966358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111369492.8A Active CN114295510B (en) | 2021-11-18 | 2021-11-18 | Linear acceleration performance testing machine for lubricating grease |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114295510B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB748787A (en) * | 1953-07-14 | 1956-05-09 | Nat Res Dev | Improvements in and relating to fatigue testing machines |
| DE3128711A1 (en) * | 1981-07-21 | 1983-02-10 | Zwick Gmbh & Co, 7900 Ulm | Striking mechanism for material testing |
| CN1828264A (en) * | 2006-04-18 | 2006-09-06 | 燕山大学 | On-line measuring and testing machine for radial sliding bearing friction and wearing |
| CN203858243U (en) * | 2014-01-02 | 2014-10-01 | 上海大学 | Elastohydrodynamic oil film measurement testing machine for roller pin |
| CN104764690A (en) * | 2015-03-31 | 2015-07-08 | 电子科技大学 | Dynamic and static friction experimental device for eliminating speed effect |
| CN106596333A (en) * | 2016-11-01 | 2017-04-26 | 美特斯工业系统（中国）有限公司 | Rheological measurement equipment for materials and using method thereof |
| CN107796927A (en) * | 2017-09-14 | 2018-03-13 | 北京精密机电控制设备研究所 | A kind of storage acceleration test apparatus of lubricating grease |
| CN109115998A (en) * | 2018-09-25 | 2019-01-01 | 广州供电局有限公司 | PERFORMANCE OF GREASES test macro and PERFORMANCE OF GREASES test method |
| JP2019020329A (en) * | 2017-07-20 | 2019-02-07 | 株式会社ジェイテクト | Condition evaluation method for grease inside rolling bearing and condition evaluation apparatus for the same |
| CN109708889A (en) * | 2019-01-09 | 2019-05-03 | 四川大学 | The horizontal choosing method of accelerated stress of space grease lubrication bearing accelerated life test |
| CN110954327A (en) * | 2019-12-27 | 2020-04-03 | 广东石油化工学院 | Grease lubrication rolling bearing life acceleration experiment device based on switched reluctance motor |
| CN111141640A (en) * | 2019-12-02 | 2020-05-12 | 大连北方分析仪器有限公司 | Lubricating grease similar viscosity measuring device |
| CN111141631A (en) * | 2020-01-09 | 2020-05-12 | 东华大学 | Limited-length contact lubrication abrasion integrated tester |
| CN111780972A (en) * | 2020-08-13 | 2020-10-16 | 青岛理工大学 | Device for measuring friction force and film thickness of lubricating oil film under surface speed difference |
| CN113358554A (en) * | 2021-05-24 | 2021-09-07 | 浙江环动机器人关节科技有限公司 | Lubricating grease and lubricating oil product test device and test method |
-
2021
- 2021-11-18 CN CN202111369492.8A patent/CN114295510B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB748787A (en) * | 1953-07-14 | 1956-05-09 | Nat Res Dev | Improvements in and relating to fatigue testing machines |
| DE3128711A1 (en) * | 1981-07-21 | 1983-02-10 | Zwick Gmbh & Co, 7900 Ulm | Striking mechanism for material testing |
| CN1828264A (en) * | 2006-04-18 | 2006-09-06 | 燕山大学 | On-line measuring and testing machine for radial sliding bearing friction and wearing |
| CN203858243U (en) * | 2014-01-02 | 2014-10-01 | 上海大学 | Elastohydrodynamic oil film measurement testing machine for roller pin |
| CN104764690A (en) * | 2015-03-31 | 2015-07-08 | 电子科技大学 | Dynamic and static friction experimental device for eliminating speed effect |
| CN106596333A (en) * | 2016-11-01 | 2017-04-26 | 美特斯工业系统（中国）有限公司 | Rheological measurement equipment for materials and using method thereof |
| JP2019020329A (en) * | 2017-07-20 | 2019-02-07 | 株式会社ジェイテクト | Condition evaluation method for grease inside rolling bearing and condition evaluation apparatus for the same |
| CN107796927A (en) * | 2017-09-14 | 2018-03-13 | 北京精密机电控制设备研究所 | A kind of storage acceleration test apparatus of lubricating grease |
| CN109115998A (en) * | 2018-09-25 | 2019-01-01 | 广州供电局有限公司 | PERFORMANCE OF GREASES test macro and PERFORMANCE OF GREASES test method |
| CN109708889A (en) * | 2019-01-09 | 2019-05-03 | 四川大学 | The horizontal choosing method of accelerated stress of space grease lubrication bearing accelerated life test |
| CN111141640A (en) * | 2019-12-02 | 2020-05-12 | 大连北方分析仪器有限公司 | Lubricating grease similar viscosity measuring device |
| CN110954327A (en) * | 2019-12-27 | 2020-04-03 | 广东石油化工学院 | Grease lubrication rolling bearing life acceleration experiment device based on switched reluctance motor |
| CN111141631A (en) * | 2020-01-09 | 2020-05-12 | 东华大学 | Limited-length contact lubrication abrasion integrated tester |
| CN111780972A (en) * | 2020-08-13 | 2020-10-16 | 青岛理工大学 | Device for measuring friction force and film thickness of lubricating oil film under surface speed difference |
| CN113358554A (en) * | 2021-05-24 | 2021-09-07 | 浙江环动机器人关节科技有限公司 | Lubricating grease and lubricating oil product test device and test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114295510A (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7014235B1 (en) | Inertia actuation for robotic gripper mechanism | |
| CA1096101A (en) | Electro-mechanical impact device | |
| CN101236144A (en) | Compression test apparatus | |
| JP2011161627A (en) | Self-centering support | |
| EP3441754B1 (en) | Wedge tapping device for rotating electrical machine, and wedge inspection system for rotating electrical machine | |
| CN114295510B (en) | Linear acceleration performance testing machine for lubricating grease | |
| CN112763412B (en) | Spring type energy storage mechanism of material friction abnormal sound test bed | |
| CN216816413U (en) | Loading ejection device for lubricating grease testing machine | |
| CN110542545B (en) | Automatic test electromagnetic brake's actuation device under complicated application environment | |
| JP2023506904A (en) | elevator safety brake | |
| CN112781849B (en) | Hinge test equipment | |
| US5907090A (en) | Apparatus for measuring static and kinetic friction properties | |
| CN103323220A (en) | Testing tool for automobile folding key durability test | |
| CN216816414U (en) | Loading mechanism for lubricating grease testing machine | |
| KR970016532A (en) | Bearing height measuring device of half-half plain bearing | |
| CN209656425U (en) | A kind of stability test instrument | |
| CN103006333B (en) | Pelvis impact test device | |
| JPS6244608B2 (en) | ||
| SU1601560A1 (en) | Installation for testing samples of rocks for friction | |
| CN217112089U (en) | Reagent strip grabbing device, full-automatic chemiluminescence analysis appearance | |
| CN117664550B (en) | Leaf spring fatigue test device | |
| JP4643191B2 (en) | Quick return mechanism for single-lens reflex cameras | |
| CN216745912U (en) | Bearing rocks measuring tool | |
| CN215375694U (en) | Wiper motor assembly becomes to carry testing arrangement | |
| CN215893783U (en) | Striking jig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |