CN108732087B - Harmful particle detection device among disk lubricating grease sample - Google Patents
Harmful particle detection device among disk lubricating grease sample Download PDFInfo
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- CN108732087B CN108732087B CN201811006246.4A CN201811006246A CN108732087B CN 108732087 B CN108732087 B CN 108732087B CN 201811006246 A CN201811006246 A CN 201811006246A CN 108732087 B CN108732087 B CN 108732087B
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- 239000004519 grease Substances 0.000 title claims abstract description 36
- 239000002245 particle Substances 0.000 title claims abstract description 26
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 230000003068 static effect Effects 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
A device for detecting harmful particles in a disc type lubricating grease sample comprises a base, a movable disc, a static disc, an upright post, a support column, a power mechanism, a central gear, a lower gear seat, a handle, an upper plate and a lower plate; the base is placed on the platform through the support column, a central gear is installed in the center of the base, and a rotating shaft of the central gear penetrates through the base to be connected with the handle; a plurality of gear lower seats are uniformly distributed around the central gear, and the gear lower seats are meshed with the central gear; a plurality of upright posts are uniformly arranged on the base, the movable disc is arranged on the upright posts in a sliding manner, and the upper ends of the upright posts are fixedly connected with the static disc; the power mechanism is arranged on the static disc and connected with the movable disc; a lower plate is arranged on the upper surface of each gear lower seat, and an upper plate which corresponds to the lower plate one by one is arranged on the lower surface of the movable disc. The invention has the advantages of saving strength, saving time, improving efficiency, simple structure, simple and convenient operation and the like. The invention belongs to the technical field of lubricating grease detection.
Description
Technical Field
The invention belongs to the technical field of lubricating grease detection, and particularly relates to a device for detecting harmful particles in a disc type lubricating grease sample.
Background
Since the solid hard particles contained in the grease scratch the surface of the lubricated parts and reduce the service life thereof, it is necessary to detect whether harmful hard particles are contained or not and the scratch grade of harmful particles in the grease during production, during acceptance, before use, and during monitoring of equipment failure. According to the identification method described in the identification of harmful particles in grease (SH/T-0322-1992), a quantity of grease is placed between two plastic plates under pressure and rotated about 30 ° relative to each other. After the rotation, the scratch grade of the harmful particles in the grease is judged according to the number of the scratches on the plastic plate caused by the hard particles contained in the grease. The method in SH/T-0322-1992 requires a pressure of about 1.37MPa (14kgf/cm2), i.e.up to about 87.5kgf, to be applied between two plastic plates (25 mm. times.25 mm. times.10 mm in size). The pressurization mode of the device for realizing the measurement of the harmful particles in the lubricating grease, which is disclosed in SH/T-0322-1992, is realized by manually rotating a handle and pushing a spring through a thread pair, so that the actual operation process is very laborious. In addition, the detection device given by the method in SH/T-0322-1992 can only detect one grease sample at a time, which is too inefficient for grease manufacturing companies, quality inspection monitoring departments, and large-scale service units.
Disclosure of Invention
Aiming at the problems, the invention provides a time-saving and labor-saving device for detecting harmful particles in a disc type lubricating grease sample, which has the advantages of being capable of detecting a plurality of lubricating grease samples simultaneously, reducing the labor consumption in the operation process and improving the detection efficiency.
A device for detecting harmful particles in a disc type lubricating grease sample comprises a base, a movable disc, a static disc, an upright post, a support column, a power mechanism, a central gear, a lower gear seat, a handle, an upper plate and a lower plate; the base is placed on the platform through the support column, a central gear is installed in the center of the base, and a rotating shaft of the central gear penetrates through the base to be connected with the handle; a plurality of gear lower seats are uniformly distributed around the central gear, and the gear lower seats are meshed with the central gear; a plurality of upright posts are uniformly arranged on the base, the movable disc is arranged on the upright posts in a sliding manner, and the upper ends of the upright posts are fixedly connected with the static disc; the power mechanism is arranged on the static disc and connected with the movable disc; a lower plate is arranged on the upper surface of each gear lower seat, and an upper plate which corresponds to the lower plate one by one is arranged on the lower surface of the movable disc. By adopting the structure, the driving disc can be driven to linearly move along the upright post through the power mechanism, so that the labor is saved, and the operation is facilitated for an operator; simultaneously, once set up a plurality of gear lower seats to drive gear lower seat through engaged with sun gear and rotate, and then make the hypoplastron rotate the required angle for the upper plate, consequently can once accomplish the detection of a plurality of lubricating grease samples, save time, raise the efficiency, and simple structure, easy and simple to handle.
Preferably, the movable disc is provided with a cylindrical hole, the movable disc is sleeved on the stand column through the cylindrical hole, and the cylindrical hole and the stand column are in clearance fit. By adopting the structure, the movable disc can do linear motion along the upright post, and the contact precision between the upper plate and the lower plate and the motion stability between the movable disc and the upright post can be ensured.
Preferably, the power mechanism is a hydraulic cylinder, the hydraulic cylinder is vertically placed, a flange end cover at the front end of the hydraulic cylinder is fixedly connected with the upper surface of the static disc, and a piston rod of the hydraulic cylinder penetrates through the static disc and is fixedly connected with the movable disc. By adopting the structure, the power transmission of the hydraulic cylinder is stable, the movement of the movable disc can be stably driven, and the smooth and stable completion of the detection process is ensured.
Preferably, two oil inlets and outlets of the hydraulic cylinder are connected with the hydraulic control circuit, one oil inlet and outlet is a high-pressure end, and the other oil inlet and outlet is a low-pressure end; a pressure gauge is arranged on an oil way connected with the oil inlet and the oil outlet of the high-pressure end; and the hydraulic control circuit is also provided with an overflow valve for limiting the maximum thrust of the piston rod. By adopting the structure, the pressure between the upper plate and the lower plate can be accurately controlled in the detection process through the pressure gauge, the overflow valve can limit the thrust value of the piston rod, and the damage to equipment caused by overlarge thrust value is avoided.
Preferably, driving disk and base all are discoid, and the plummet central line of plummet central line, the base of pneumatic cylinder, the plummet central line of quiet dish all collineation, and be parallel to each other with the central axis of stand. By adopting the structure, the movable disc can stably and smoothly move along the axial direction of the upright post.
Preferably, the lower surface of the movable disk is provided with square grooves which correspond to the lower gear seats one to one, and the upper surface of the lower gear seat is also provided with square grooves which are opposite to the square grooves on the movable disk. By adopting the structure, the upper plate and the lower plate can be conveniently installed, and the test can be carried out more quickly and better.
Preferably, the lower gear seat is mounted on the base through a radial thrust bearing. By adopting the structure, the upper end surface of the centripetal thrust bearing can bear the axial acting force transmitted to the gear seat by the lower plate during testing.
Preferably, the number of teeth of the sun gear is an integral multiple of the number of the lower seats of the gear. By adopting the structure, the arrangement, installation and adjustment of the lower gear seats are convenient, and the lower gear seats can be driven by the central gear simultaneously, so that the detection of a plurality of samples can be completed at one time.
Preferably, the two pairs of supporting columns are symmetrically arranged on two sides of the handle; and the horizontal distance from the support column to the handle is half of the distance from the support column to the center of the base. By adopting the structure, the rotation angle of the handle can be limited by the support column, so that the handle can rotate by 30 degrees when rotating to the support column, and the test failure caused by the overlarge rotation angle during the test is avoided.
Preferably, the support column comprises a cylinder and a pin, and the cylinder is mounted at the bottom of the base through the pin. By adopting the structure, the supporting column can be installed more simply and conveniently, and the operation is convenient.
The invention has the beneficial effects that: the lower gear seats are arranged at one time, the power mechanism drives the movable disc to linearly move along the stand column, the upper plates can be pushed at one time, the pressure between the lower plate and the upper plates reaches a target value, the lower gear seats are driven to rotate through the meshed central gear, and the lower plate rotates by a required angle relative to the upper plates, so that the detection of a plurality of lubricating grease samples can be completed at one time, the time is saved, the efficiency is improved, the labor of operators can be reduced, and the lubricating grease detecting device is simple in structure and easy and convenient to operate; in the invention, the plumb central line of the hydraulic cylinder, the plumb central line of the movable disc, the plumb central line of the base and the plumb central line of the static disc are collinear and are parallel to the central axis of the upright post, so that the movable disc can stably and smoothly move along the axial direction of the upright post, and jamming is prevented during detection; according to the invention, the hydraulic control loop is provided with the pressure gauge and the overflow valve for limiting the maximum thrust of the piston rod, so that the pressure between the upper plate and the lower plate can be accurately controlled in the detection process through the pressure gauge, the thrust value can be limited through the overflow valve, and the damage to equipment due to the overlarge thrust value is avoided; according to the invention, the two pairs of support columns are symmetrically arranged on the two sides of the handle, and the horizontal distance from the support columns to the handle is half of the distance from the support columns to the center of the base, so that the rotation angle of the handle can be limited through the support columns, the handle can rotate by 30 degrees just when rotating to the support columns, the test failure caused by overlarge rotation angle in the test is avoided, meanwhile, a sufficient movable space is reserved for the handle by supporting, and the gear lower seat can be conveniently rotated through the handle in the test.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view in the direction AA in fig. 1.
The hydraulic control device comprises a base 1, a stand column 2, a static disc 3, a movable disc 4, a hydraulic cylinder 5, a gear lower seat 6, a radial thrust bearing 7, a central gear 8, a handle 9, a support column 10, a high-pressure end oil inlet and outlet 11, and a low-pressure end oil inlet and outlet 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A device for detecting harmful particles in a disc type lubricating grease sample comprises a base, a stand column, a movable disc, a static disc, a power mechanism, a lower gear seat, a central gear, a handle, an upper plate, a lower plate and a support column; the base is arranged on the platform or the plane through the supporting column, the central part of the upper surface of the base is provided with a central gear, a plurality of lower gear seats are uniformly distributed around the central gear, and the lower gear seats are meshed with the central gear; a rotating shaft of the central gear extends out of the bottom of the base, and the bottom of the rotating shaft is connected with the handle; the stand column is arranged on the base, the movable disc is arranged on the stand column in a sliding mode, the static disc is fixed at the upper end of the stand column, and the static disc is located above the movable disc; the power mechanism is a hydraulic cylinder, the hydraulic cylinder is arranged on the static disc, and the hydraulic cylinder is connected with the movable disc; the lower gear seat is provided with a lower plate, the lower surface of the movable disc is provided with an upper plate, and the number and the position of the upper plate correspond to those of the lower plate.
In this embodiment, the base has a disk shape, and a sun gear is installed at the center of the disk. Four lower gear seats are arranged on the outer side of the center of the disc, the four lower gear seats are uniformly distributed on the periphery of the central gear, and the lower gear seats are meshed with the central gear. The lower gear seat is mounted on the base through the radial thrust bearing, and the upper end face of the radial thrust bearing bears the axial acting force transmitted to the lower gear seat by the lower plate during detection. The lower gear seat and the central gear rotate around the self axis (the self axis is parallel to the central axis of the disc). The rotating shaft of the central gear extends out of the lower surface of the disc, the rotating shaft of the central gear is connected with the middle part of the handle, and the installed handle is in the horizontal direction. And torque is applied to the handle, so that the rotating shaft of the central gear is rotated to drive the central gear to rotate, and the lower gear seat is driven to rotate due to the meshing of the lower gear seat and the central gear, so that the lower plate rotates by a required angle relative to the upper plate.
The number of teeth of the lower gear seat is 48, the number of teeth of the central gear is 48, and the gear module is 1 mm.
Two pairs of support columns are symmetrically arranged below the base by taking the handle as a symmetry axis, and the support columns are used for supporting the device main body on a platform or a desktop so as to ensure that the handle has enough space to rotate between the base and the platform. The support column includes cylinder and pin, and the cylinder passes through the pin to be installed in the lower surface of base. Simultaneously, support column and handle keep certain distance, and the horizontal distance of support column to handle is the half of the distance of support column to the base center to guarantee that the handle can rotate 30 degrees, and then guarantee to detect and accomplish smoothly.
In this embodiment, there are two vertical posts, and the vertical posts are symmetrically disposed on the base. The upright post and the base are connected through a hinged hole on the base and are fastened through a nut, and the spring washer is anti-loose. The upright post is cylindrical. The movable disc is also disc-shaped, and in order to distinguish the base, the movable disc is also called as the movable disc in the embodiment. The movable disc is provided with symmetrical cylindrical holes, and the size and the shape of the cylindrical holes are matched with those of the upright columns. The movable disc is sleeved on the upright post through the cylindrical hole, and the movable disc is in clearance fit with the upright post. The static disc is cuboid, symmetrical reaming holes are formed in two ends of the static disc, the static disc is connected with the stand column through the reaming holes in the two ends, and the static disc is fastened through a nut and is prevented from loosening through a spring washer.
The hydraulic cylinder is vertically placed on the upper surface of the static disc, and a front end flange of the hydraulic cylinder is fixedly connected with the static disc. The lower end of a piston rod of the hydraulic cylinder is in threaded connection with the movable disc, and the nut is screwed down and the spring washer is anti-loose. Two oil inlets and outlets of the hydraulic cylinder are connected with a hydraulic control loop, one is a high-pressure end oil inlet and outlet, and the other is a low-pressure end oil inlet and outlet. The hydraulic control circuit used in the device is a hydraulic control circuit which is common in engineering and is a common technique in the field, so the hydraulic control circuit is not described in detail herein. The hydraulic circuit is provided with an overflow valve, and the maximum thrust of a piston rod of the hydraulic cylinder can be limited to the pressure specified by the standard SH/T-0322-1992 through the overflow valve. And the high-pressure oil way is connected with the oil inlet and the oil outlet of the high-pressure end, a pressure gauge is arranged on the high-pressure oil way, and the actual extrapolation pressure of the piston rod of the hydraulic cylinder can be known through the arranged pressure gauge. The movable disc is pushed by the hydraulic cylinder to do linear motion along the direction of the upright post.
In this embodiment, a square groove is formed in the upper surface of each gear lower seat, the length × width of the square groove is 25mm × 25mm, and the depth of the square groove is less than 10 mm. A lower plate is arranged in each square groove on the lower gear seat. The lower surface of the movable disc is provided with square grooves which are in one-to-one correspondence with the square grooves on the lower gear seat, and the specifications of the square grooves are consistent with those of the square grooves on the lower gear seat.
The piston rod of the hydraulic cylinder drives the movable disc downwards under the action of pressure oil to make the upper plate on the lower surface of the movable disc contact with the lower plate on the lower seat of the gear to produce 1.37MPa (14 kgf/cm)2) The pressure of (c). The handle is connected with the central gear, and the lower plate can rotate by a required angle relative to the upper plate by pulling the handle.
The plumb central line of the hydraulic cylinder, the plumb central line of the static disc, the plumb central line of the movable disc and the plumb central line of the base are collinear and parallel to the central axis of the upright post. The upper plate and the lower plate are both made of plastic materials.
When the device is used for detecting lubricating grease, the upper plate and the lower plate are respectively placed into the square grooves of the movable disc and the lower gear seat, and a certain amount of lubricating grease to be detected is placed on the surfaces of the upper plate and the lower plate according to the requirements of the identification method of harmful particles of lubricating grease (SH/T-0322-1992). The handle is pulled to align and align the side edges of the upper plate and the lower plate. And operating the hydraulic cylinder to enable a piston rod of the hydraulic cylinder to descend. When the contact pressure between the surfaces of the upper plate and the lower plate reaches 87.5kgf, the handle is pulled again to rotate the lower plate of the plastic plate for 30 degrees relative to the upper plate; the cylinder rod was then raised, the upper plate and the lower plate were removed, and the scratch grade was determined according to the specification of the identification method for harmful particles in grease (SH/T-0322-1992).
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A detection device for harmful particles in a disc type lubricating grease sample is characterized in that: the device comprises a base, a movable disc, a static disc, an upright post, a support column, a power mechanism, a central gear, a lower gear seat, a handle, an upper plate and a lower plate; the base is placed on the platform through the support column, a central gear is installed in the center of the base, and a rotating shaft of the central gear penetrates through the base to be connected with the handle; a plurality of gear lower seats are uniformly distributed around the central gear, and the gear lower seats are meshed with the central gear; a plurality of upright posts are uniformly arranged on the base, the movable disc is arranged on the upright posts in a sliding manner, and the upper ends of the upright posts are fixedly connected with the static disc; the power mechanism is arranged on the static disc and connected with the movable disc; a lower plate is arranged on the upper surface of each gear lower seat, and an upper plate which corresponds to the lower plate one by one is arranged on the lower surface of the movable disc.
2. The apparatus for detecting harmful particles in a disc grease sample according to claim 1, wherein: the cylinder hole has been seted up on the driving disk, and the driving disk passes through the cylinder hole suit on the stand, and cylinder hole and stand are clearance fit.
3. The apparatus for detecting harmful particles in a disc grease sample according to claim 1, wherein: the power mechanism is a hydraulic cylinder, the hydraulic cylinder is vertically placed, a flange end cover at the front end of the hydraulic cylinder is fixedly connected with the upper surface of the static disc, and a piston rod of the hydraulic cylinder penetrates through the static disc and is fixedly connected with the movable disc.
4. The apparatus for detecting harmful particles in a disc grease sample according to claim 3, wherein: two oil inlet and outlet ports of the hydraulic cylinder are connected with a hydraulic control loop, one oil inlet and outlet port is a high-pressure end oil inlet and outlet port, and the other oil inlet and outlet port is a low-pressure end oil inlet and outlet port; a pressure gauge is arranged on an oil way connected with the oil inlet and the oil outlet of the high-pressure end; and the hydraulic control circuit is also provided with an overflow valve for limiting the maximum thrust of the piston rod.
5. The apparatus for detecting harmful particles in a disc grease sample according to claim 3, wherein: the driving disk and the base are both disc-shaped, and the plumb central line of the hydraulic cylinder, the plumb central line of the driving disk, the plumb central line of the base and the plumb central line of the static disk are collinear and parallel to the central axis of the stand column.
6. The apparatus for detecting harmful particles in a disc grease sample according to claim 1, wherein: the lower surface of the movable disc is provided with square grooves which correspond to the lower gear seats one to one, and the upper surface of the lower gear seat is also provided with square grooves which are just opposite to the square grooves on the movable disc.
7. The apparatus for detecting harmful particles in a disc grease sample according to claim 1, wherein: the lower gear seat is arranged on the base through a radial thrust bearing.
8. The apparatus for detecting harmful particles in a disc grease sample according to claim 1, wherein: the number of teeth of the central gear is integral multiple of the number of lower seats of the gear.
9. The apparatus for detecting harmful particles in a disc grease sample according to claim 1, wherein: the two pairs of supporting columns are symmetrically arranged on two sides of the handle; and the horizontal distance from the support column to the handle is half of the distance from the support column to the center of the base.
10. The apparatus for detecting harmful particles in a disc grease sample according to claim 9, wherein: the support column comprises a column body and a pin, and the column body is installed at the bottom of the base through the pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811006246.4A CN108732087B (en) | 2018-08-30 | 2018-08-30 | Harmful particle detection device among disk lubricating grease sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811006246.4A CN108732087B (en) | 2018-08-30 | 2018-08-30 | Harmful particle detection device among disk lubricating grease sample |
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| Publication Number | Publication Date |
|---|---|
| CN108732087A CN108732087A (en) | 2018-11-02 |
| CN108732087B true CN108732087B (en) | 2020-08-11 |
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| CN201811006246.4A Expired - Fee Related CN108732087B (en) | 2018-08-30 | 2018-08-30 | Harmful particle detection device among disk lubricating grease sample |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2183347A (en) * | 1985-11-25 | 1987-06-03 | Plint & Partners Ltd | Lubricant testing apparatus |
| CN102944512A (en) * | 2012-11-03 | 2013-02-27 | 中国矿业大学 | Test machine and test method for real-time and dynamic observation of end surface torsion friction and abrasion of friction interface |
| CN103308447A (en) * | 2013-05-31 | 2013-09-18 | 西安交通大学 | Contacting and rubbing device of nano-particle air film static-pressure thrust bearing |
| CN205015336U (en) * | 2015-09-21 | 2016-02-03 | 上海金艺检测技术有限公司 | Lubricated performance testing device of lubricating grease high temperature |
| CN208568551U (en) * | 2018-08-30 | 2019-03-01 | 华南师范大学 | It is a kind of to save laborsaving lubricating grease sample harmful ion detector |
-
2018
- 2018-08-30 CN CN201811006246.4A patent/CN108732087B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2183347A (en) * | 1985-11-25 | 1987-06-03 | Plint & Partners Ltd | Lubricant testing apparatus |
| CN102944512A (en) * | 2012-11-03 | 2013-02-27 | 中国矿业大学 | Test machine and test method for real-time and dynamic observation of end surface torsion friction and abrasion of friction interface |
| CN103308447A (en) * | 2013-05-31 | 2013-09-18 | 西安交通大学 | Contacting and rubbing device of nano-particle air film static-pressure thrust bearing |
| CN205015336U (en) * | 2015-09-21 | 2016-02-03 | 上海金艺检测技术有限公司 | Lubricated performance testing device of lubricating grease high temperature |
| CN208568551U (en) * | 2018-08-30 | 2019-03-01 | 华南师范大学 | It is a kind of to save laborsaving lubricating grease sample harmful ion detector |
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| CN108732087A (en) | 2018-11-02 |
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Granted publication date: 20200811 |