CN108982295B - A device that simultaneously detects harmful particles in multiple grease samples - Google Patents

Abstract

A device capable of simultaneously detecting harmful particles in multiple grease samples, comprising a base, a column, a moving beam, a static beam, a power mechanism, a gear seat, an upper plate, and a lower plate, and at least two columns are arranged on the base, The moving beam is slidably installed on the column, and the static beam is fixedly installed at the top of the column; the power mechanism is installed on the static beam, and the power mechanism and the moving beam are connected; a number of gear seats are arranged on the base, and the adjacent gear seats are meshed with each other. A lower plate is placed on the gear seat, and a plurality of upper plates are arranged on the lower surface of the moving beam, and the upper plates and the gear seat are directly opposite one by one. The invention has the advantages of being easy and labor-saving, capable of detecting multiple grease samples at one time, saving time, improving efficiency, and the like. The invention belongs to the technical field of grease detection.

Description

A device that simultaneously detects harmful particles in multiple grease samples

technical field

The invention belongs to the technical field of grease detection, and in particular relates to a device capable of simultaneously detecting harmful particles in multiple grease samples.

Background technique

The solid hard particles contained in the grease will scratch the surface of the lubricated parts and reduce its service life. Therefore, the grease needs to be checked for harmful hard particles during production, acceptance, before use and equipment failure monitoring. And the scratch grade of harmful particles in the grease. According to the identification method described in "Evaluation Method for Harmful Particles of Grease" (SH/T-0322-1992), a certain amount of grease is placed between two plastic plates to pressurize and rotate about 30° relative to each other. After rotation, the scratch grade of harmful particles in the grease is judged according to the number of scratches caused by the hard particles contained in the grease on the plastic plate. The method in SH/T-0322-1992 requires a pressure of about 1.37MPa (14kgf/cm2) between two plastic sheets (25mm×25mm×10mm in size), that is, up to about 87.5kgf. And the realization device given in SH/T-0322-1992—the pressure method of the grease harmful particle detector is to manually rotate the handle and push the spring through the threaded pair, which makes the actual operation process very laborious. In addition, the detection device given by the method in SH/T-0322-1992 can only measure one grease sample at a time, which is too low for grease production enterprises, quality inspection and monitoring departments and large-scale users.

SUMMARY OF THE INVENTION

In view of the above, the present invention provides a time-saving and labor-saving device that can simultaneously detect harmful particles in multiple grease samples, which also has the advantages of simple structure, simple operation, and high efficiency.

A device that can simultaneously detect harmful particles in multiple grease samples, comprising a base, a column, a moving beam, a static beam, a power mechanism, a gear seat, an upper plate, and a lower plate, at least two columns are arranged on the base, The moving beam is slidably installed on the column, and the static beam is fixedly installed at the top of the column; the power mechanism is installed on the static beam, and the power mechanism and the moving beam are connected; a number of gear seats are arranged on the base, and the adjacent gear seats are meshed with each other. A lower plate is placed on the gear seat, and a plurality of upper plates are arranged on the lower surface of the moving beam, and the upper plates and the gear seat are facing each other one by one. With this structure, the moving beam is driven by the power mechanism, and the moving beam moves in a straight line along the axis of the column, so that the pressure required for the test between the upper plate and the lower plate is reached, and then all the upper and lower plates can be adjusted by pushing a gear seat. The relative angle of the lower plate is easy and labor-saving; multiple gear seats are set on the base, and multiple sets of upper and lower plates can be set, so multiple grease samples can be tested at one time, saving time and improving efficiency.

Further, the power mechanism is a hydraulic cylinder, the hydraulic cylinder is placed vertically, the front end flange end cover of the hydraulic cylinder is fixedly connected to the upper surface of the static beam, and the piston rod of the hydraulic cylinder passes through the static beam and is fixedly connected to the moving beam. With this structure, the power transmission of the hydraulic cylinder is stable, and the moving beam can be stably driven to ensure the smooth and stable completion of the detection process.

Further, the two oil inlet and outlet ports of the hydraulic cylinder are connected with the hydraulic control circuit, one oil inlet and outlet is the high pressure end, and the other oil inlet and outlet is the low pressure end; a pressure gauge is provided on the oil circuit connecting the oil inlet and outlet of the high pressure end; the hydraulic control circuit There is also a relief valve for limiting the maximum thrust of the piston rod. With this structure, the pressure between the upper plate and the lower plate can be precisely controlled by the pressure gauge during the detection process, and the relief valve can limit the thrust value to avoid damage to the equipment due to excessive thrust value.

Further, the hydraulic cylinder adopts a light tie rod hydraulic cylinder, the front end flange of the hydraulic cylinder and the upper surface of the static beam are connected with bolts, and are fastened with nuts, and spring washers are used to prevent loosening. With this structure, the configuration of the pull rod hydraulic cylinder is simple and labor-saving.

Further, the base, the moving beam, and the static beam are all in the shape of a cuboid, two uprights are symmetrically fixed on both ends of the base, the two ends of the moving beam are sleeved on the uprights through cylindrical holes, and the two ends of the static beam pass through hinged holes and nuts. Fixed to the top of the column. There is a clearance fit between the moving beam and the column. By adopting this structure, the material selection is simple, the structure is simple, and the processing and installation are convenient.

Further, the centerlines of the plumb bobs of the base, the moving beam, and the static beam are parallel to each other and parallel to the center axis of the column. With this structure, the moving beam can move stably and smoothly along the axis direction of the column.

Further, the base is provided with a number of evenly distributed bearing holes, and the bearing holes are arranged in a line shape, and the gear seat is installed in the bearing holes through a radial thrust bearing. The adoption of this structure facilitates the installation of the gear seat and facilitates the meshing and transmission of the adjacent gear seats. At the same time, the upper end face of the radial thrust bearing can bear the axial force transmitted from the lower plate to the gear seat during testing.

Further, it also includes a handle, the handle and the gear seat are fixedly connected by screws, the handle is in a horizontal direction, and the center line of the handle vertically intersects with the center axis of the gear seat. By adopting this structure, it is convenient for the user to easily rotate the gear seat through the handle during detection, so as to easily adjust the relative angle between the upper plate and the lower plate, saving time and effort.

Further, the gear seat is provided with a square groove for placing the lower plate; the lower surface of the moving beam is provided with a square groove corresponding to the square groove on the gear seat; the depth of the square groove is 8mm, and the side length of the square groove is 25 mm. ×25mm. With this structure, it is convenient to install the upper plate and the lower plate.

Further, both the upper plate and the lower plate are made of plastic plates.

Beneficial effects of the present invention: the present invention adopts a hydraulic cylinder as a power mechanism to drive the moving beam to move linearly along the axis of the column, thereby increasing the pressure between the upper plate and the lower plate, so compared with the prior art, it is labor-saving and easy; at the same time, In the present invention, multiple gear seats are arranged on the base, and multiple sets of upper and lower plates can be arranged on the gear seat and the moving beam, so that multiple grease samples can be detected at one time, saving time and improving efficiency; one handle and one The gear bases are connected, and by rotating the handle and the intermeshing transmission between the gear bases, the relative angles between multiple sets of upper and lower plates are changed by pulling the handle at one time, so as to complete the test, so the operation is easy and the efficiency is high; the hydraulic cylinder There is a relief valve on the connected circuit, so the maximum thrust of the piston rod can be limited by the relief valve to avoid damage to the equipment due to excessive thrust; a pressure gauge is also set on the circuit connected to the oil inlet and outlet of the high pressure side, which is convenient for Users can read the pressure value through the pressure gauge and easily control the pressure during the test.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a cross-sectional view taken along the AA direction in FIG. 1 .

Among them, 1-base, 2-column, 3-static beam, 4-moving beam, 5-hydraulic cylinder, 6-gear seat, 7-handle, 8-centripetal thrust bearing, 9-high-pressure end inlet and outlet, 10- The inlet and outlet of the low pressure side, 11- the square groove.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

A device that can detect harmful particles in multiple grease samples at the same time includes a base, a column, a moving beam, a static beam, a hydraulic cylinder, a gear seat, a handle, a centripetal thrust bearing, an upper plate, and a lower plate. The two uprights are symmetrically arranged at both ends of the base, the two ends of the moving beam are slidably sleeved on the two uprights, the moving beam can move along the axial direction of the uprights, the static beam is fixed on the top of the two uprights, and the hydraulic cylinder is installed above the static beam , the lower end of the piston rod of the hydraulic cylinder protrudes from the static beam, and the lower end of the piston rod is threadedly connected with the moving beam. The lower surface of the moving beam is evenly arranged with 4 upper plates in a straight line, and 4 upper plates are evenly arranged on the upper surface of the base. Gear seat, each gear seat is opposite to an upper plate, the gear seat is installed on the base through a radial thrust bearing, the adjacent gear seats are driven by gear meshing, and the handle is fixedly connected to one of the gear seats. Pull the handle to drive the gear seat to rotate, thereby driving the lower plate to rotate.

The base is in the shape of a cuboid, and the two ends of the base are provided with symmetrical hinged holes. The diameter of the hinged hole is the same as the outer diameter of the column. Four gear seats are evenly arranged between the two hinged holes. It is located on the connecting line between the centers of the two uprights, and the four gear seats are arranged in a line. The bottom end of the column and the base are fixedly connected through the hinge holes on the base. The upper surface of each gear seat is provided with a square groove, and the specification of the square groove is the same as that of the square groove on the lower surface of the moving beam, and the square groove is used for installing the lower plate. The gear seat is installed on the base through the radial thrust bearing, and the upper end face of the radial thrust bearing carries the axial force transmitted from the lower plate to the gear seat during the test. The two adjacent gear seats are meshed with each other. In this embodiment, the handle and the first gear seat on the left are fixedly connected by screws, the handle is in a horizontal direction, and the center line of the handle vertically intersects with the center axis of the gear seat.

The moving beam is in the shape of a cuboid, and a pair of cylindrical holes are symmetrically arranged at both ends of the moving beam; four square grooves are evenly arranged on the lower surface of the moving beam, and the positions of the square grooves are exactly opposite to the square grooves on the gear seat. The moving beam is sleeved on the two uprights through the cylindrical holes at both ends, and the uprights and the cylindrical holes are gap-fitted. The depth of the square groove is 8mm, and the side length of the square groove is 25×25mm. Each of the square grooves on the lower surface of the moving beam is provided with an upper plate.

The hydraulic cylinder adopts a light tie rod hydraulic cylinder with a simple structure, a high degree of generalization of parts and easy installation. The hydraulic cylinder is placed vertically, and the front flange of the hydraulic cylinder is connected with the upper surface of the static beam by bolts, which are fastened with nuts, and the spring washers are used to prevent loosening. The column and the static beam are connected by hinged holes, the nuts are tightened, and the spring washers are used to prevent loosening. The lower end of the piston rod of the hydraulic cylinder and the upper surface of the moving beam are connected by thread, the nut is tightened, and the spring washer is prevented from loosening. And the center line of the plumb bob of the hydraulic cylinder, the center line of the plumb bob of the static beam, the center line of the plumb bob of the moving beam, and the center line of the plumb bob of the base are collinear, and all are parallel to the center axis of the column.

The two oil inlet and outlet ports of the hydraulic cylinder are connected with the hydraulic control circuit, one oil inlet and outlet is the high pressure end, and the other oil inlet and outlet is the low pressure end. The hydraulic control circuit used in this device is a common hydraulic control circuit in engineering, and it is easy for people in related fields to build it, so it will not be described in detail here. The relief valve in the hydraulic control circuit can limit the maximum thrust of the piston rod of the hydraulic cylinder to the pressure specified in the standard SH/T-0322-1992. From the pressure gauge on the oil circuit connected to the oil inlet and outlet of the high pressure end, it can be known that the piston rod of the oil cylinder has a Actual extrapolation pressure.

In the present invention, the upper plate and the lower plate are the test pieces required by SH/T-0322-1992, and both the upper plate and the lower plate are made of plastic plates.

When using this detection device for grease detection, first put the upper plate and the lower plate into the square grooves of the moving beam and the gear seat respectively, in accordance with the requirements of the Appraisal Method for Harmful Particles of Grease (SH/T-0322-1992) , place a certain amount of grease to be tested on the upper surface of the upper plate and the lower plate; then turn the handle to align and align the sides of the upper plate and the lower plate; operate the hydraulic cylinder and make the piston rod go down. Make the contact pressure between the surfaces of the upper plate and the lower plate reach 87.5kgf; at this time, pull the handle again to make the lower plate rotate 30° relative to the upper plate. At this time, due to the meshing transmission between the gear seats, each gear seat is rotated, Therefore, the lower plate on the gear seat rotates relative to the opposite upper plate; then the piston rod of the hydraulic cylinder is controlled to rise, and the upper plate and the lower plate are taken out. The regulations determine the scratch level and complete a test.

In this embodiment, four gear seats are provided on the base, so that a maximum of four grease samples can be tested at one time. According to the actual needs and usage scenarios, the base, moving beam and static beam can be selected with appropriate specifications, and an appropriate number of gear seats can be set on the base, so as to meet the requirements of testing multiple grease samples at one time. The change of the number of square grooves on the lower surface of the gear seat and the moving beam does not change the essence of the present invention, and still belongs to the protection scope of the present invention.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principle of the present invention , all should be equivalent replacement modes, and all are included in the protection scope of the present invention.

Claims (10)

1. An apparatus for simultaneously detecting harmful particles in a plurality of grease samples, comprising: the gear transmission mechanism comprises a base, stand columns, a movable beam, a static beam, a power mechanism, a gear seat, an upper plate and a lower plate, wherein at least two stand columns are arranged on the base; the power mechanism is arranged on the static beam and connected with the dynamic beam; the base is provided with a plurality of gear seats, adjacent gear seats are mutually meshed, the lower plate is placed on the gear seats, the lower surface of the movable beam is provided with a plurality of upper plates, and the upper plates and the gear seats are opposite to each other one by one.

2. The apparatus of claim 1, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and wherein: the power mechanism is a hydraulic cylinder, the hydraulic cylinder is vertically arranged, a flange end cover at the front end of the hydraulic cylinder is fixedly connected with the upper surface of the static beam, and a piston rod of the hydraulic cylinder penetrates through the static beam and is fixedly connected with the movable beam.

3. The apparatus of claim 2, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and 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, and the other oil inlet and outlet port 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.

4. The apparatus according to claim 2 or 3, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and comprises: the hydraulic cylinder adopts a light pull rod hydraulic cylinder, a front end flange of the hydraulic cylinder is connected with the upper surface of the static beam through a bolt, the hydraulic cylinder is fastened through a nut, and a spring washer is anti-loose.

5. The apparatus of claim 1, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and wherein: the base, the movable beam and the static beam are all in a cuboid shape, the two stand columns are symmetrically fixed at two ends of the base, two ends of the movable beam are sleeved on the stand columns through cylindrical holes, and two ends of the static beam are fixed at the top ends of the stand columns through hinged holes and nuts.

6. The apparatus of claim 5, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and wherein: the plumb central lines of the base, the movable beam and the static beam are parallel to each other and are parallel to the central axis of the upright post.

7. The apparatus of claim 5, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and wherein: a plurality of bearing holes which are uniformly distributed are formed in the base, the bearing holes are arranged in a straight line, and the gear seat is installed in the bearing holes through the radial thrust bearing.

8. The apparatus of claim 7, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and wherein: the handle is fixedly connected with the gear seat through a screw, the handle is in the horizontal direction, and the central line of the handle is vertically intersected with the central axis of the gear seat.

9. The apparatus of claim 7, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and wherein: a square groove for placing the lower plate is formed in the gear seat; the lower surface of the movable beam is provided with square grooves which correspond to the square grooves on the gear seat one by one; the depth of the square groove is 8mm, and the side length of the square groove is 25 multiplied by 25 mm.

10. The apparatus of claim 1, wherein the apparatus is capable of simultaneously detecting harmful particles in a plurality of grease samples, and wherein: the upper plate and the lower plate are both made of plastic plates.

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