CN217688481U - Loading mechanism for rolling friction pair lubricating property testing machine - Google Patents
Loading mechanism for rolling friction pair lubricating property testing machine Download PDFInfo
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- CN217688481U CN217688481U CN202220049639.9U CN202220049639U CN217688481U CN 217688481 U CN217688481 U CN 217688481U CN 202220049639 U CN202220049639 U CN 202220049639U CN 217688481 U CN217688481 U CN 217688481U
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Abstract
The utility model provides a vice for lubricity test machine loading mechanism of rolling friction, includes load frame, pressure sensor, crossbeam, application of force unit and leaf spring assembly, the loading power of application of force unit output is applyed on the crossbeam, the crossbeam passes through pressure sensor and connects load frame, load frame connects leaf spring assembly and drives leaf spring assembly through the connecting rod of its both sides and removes, leaf spring assembly includes the leaf spring body, sets up at the uide bushing of leaf spring body one side and sets up the application of force roller at leaf spring body opposite side, the uide bushing cooperates the installation with the direction slide rail in the testing machine frame, and when application of force unit output loading power, leaf spring assembly follows through its uide bushing the direction that the direction slide rail was injectd removes. The loading mechanism can be installed on a testing machine in a matched mode and used for outputting loading force simulating the actual working condition of a heavy-duty axle, the rolling friction pair and lubricating grease can be synchronously tested for lubricating performance, and the rule between the temperature rise of the friction pair and the performance parameter change of the lubricating grease is mastered.
Description
Technical Field
The utility model relates to a vice check out test set technical field of rolling friction specifically is a vice for lubricating property testing machine loading mechanism of rolling friction.
Background
The rolling friction pair is widely applied to the mechanical field, and taking a carrying vehicle as an example, a ball bearing, a thrust bearing, a self-aligning bearing and a roller bearing are applied to vehicles. In these usage scenarios, the heavy-duty bearings most prone to damage are typically double-row tapered roller bearings mounted between the axle and hub of the truck.
At present, a centralized lubricating system is adopted for a vehicle to carry out timing and quantitative lubrication on a lubricating point of a heavy-duty bearing, in order to better lubricate a rolling friction pair, an intelligent lubricating system is needed for lubricating the friction pair, the intelligent lubricating system is still in an experimental research stage, most importantly, a closed-loop condition is needed for a control program, namely when lubricating grease needs to be filled into the lubricating point, therefore, the lubricating performance of the rolling friction pair needs to be tested, and when the lubricating grease needs to be filled, the system is automatically started, and the lubricating grease needs to be filled into the lubricating point. The most direct scheme is to judge whether the lubrication point needs to be filled with lubricating grease or not by testing the temperature rise condition of the bearing bush of the rolling friction pair under the condition of heavy load, and no related method and device can realize the functions at present.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a vice for lubricating property testing machine loading mechanism of rolling friction, this loading mechanism can cooperate to install the loading force that is used for the actual operating mode of output simulation heavy-duty axletree on the testing machine, can realize doing the lubricating property test in step together with lubricating grease to the rolling friction is vice, through mastering the rule between vice temperature rise of friction and the lubricating grease performance parameter change.
The utility model adopts the technical proposal that: the utility model provides a vice for lubricity test machine loading mechanism of rolling friction, this loading mechanism install in the testing machine frame, including load frame, pressure sensor, crossbeam, application of force unit and leaf spring assembly, the loading power of application of force unit output is applyed on the crossbeam, the crossbeam passes through pressure sensor and connects the load frame, the load frame is connected leaf spring assembly and is driven leaf spring assembly and remove through the connecting rod of its both sides, leaf spring assembly includes the leaf spring body, sets up at the uide bushing of leaf spring body one side and sets up the application of force roller at leaf spring body opposite side, the uide bushing cooperates the installation with the direction slide rail in the testing machine frame, and when application of force unit output loading power, leaf spring assembly follows through its uide bushing the direction that the direction slide rail was injectd removes.
As a preferred scheme, the bearing frame adopts a U-shaped frame structure and consists of a support plate and bearing frames arranged at the end parts of two sides of the support plate.
As a preferred scheme, the supporting plate is connected with the cross beam through the pressure sensor, the end parts of two sides of the cross beam penetrate through the bearing frame, the lower surface of the cross beam is attached to the limiting surface of the bearing frame, and one end, far away from the supporting plate, of the bearing frame is connected with the plate spring assembly.
As a preferred scheme, the two force application units are symmetrically arranged on two sides of the bearing frame, the fixed end of each force application unit is connected with the frame, and the telescopic end of each force application unit is connected with the end part of the cross beam.
Preferably, the force applying unit is any one of a hydraulic cylinder, an air cylinder or an electric push rod.
According to the preferable scheme, one side of the plate spring body of the plate spring assembly is provided with the guide sleeve, the other side of the plate spring body is provided with the roller support, the plate spring body is fixedly connected with the guide sleeve and the roller support into an integral structure through the spring fixing frame, the force application roller is rotatably arranged on the roller support, two ends of the plate spring body are further provided with plate spring pin holes, and the plate spring pin holes are connected with the force bearing frame through pin shafts.
Preferably, the roller support is provided with a connecting lug plate, and the connecting lug plate is rotationally connected with the force application roller through a needle bearing and a pin shaft.
As the preferred scheme, a plurality of temperature sensors are further arranged at the upper end of the guide sleeve.
The utility model has the advantages that:
the scheme provides a loading mechanism integrating a bearing frame, a pressure sensor, a cross beam, a force application unit and a plate spring assembly into a whole through an innovative structural design, the loading force output by the loading mechanism is applied to a friction pair test piece through a force application roller, the actual working condition of a heavy-duty axle is vividly simulated by adopting a plate spring pressurization mode, the loading mechanism can be applied to a testing machine to realize synchronous lubrication performance test of a rolling friction pair and lubricating grease, and the rule between the temperature rise of the friction pair and the performance parameter change of the lubricating grease is mastered; furthermore, the loading assembly adopts a force bearing frame transmission mode, pressure is changed into tension, the structure is stable, and on a load testing mechanism, the tension is changed into pressure through structural change, so that pressure value detection is facilitated, and the safety of the device is enhanced.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without creative efforts.
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
fig. 2 is a schematic structural diagram of the middle leaf spring assembly of the present invention.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, 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 shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of the terms "a" and "an" or "the" and similar referents in the context of describing and claiming the invention are not to be construed as limiting in number, but rather as indicating the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.
Examples 1,
The detailed structure of the present embodiment is described below with reference to fig. 1-2:
as shown in fig. 1, a loading mechanism for a rolling friction pair lubrication performance tester is fixedly mounted on a tester frame for outputting a loading force, and mainly comprises a force bearing frame 71, a pressure sensor 72, a cross beam 73, a force application unit 74 and a plate spring assembly 75, wherein the force application unit 74 has a fixed end and a telescopic end, the fixed end is hinged on a base, the telescopic end is connected with the cross beam 73 for applying the loading force output by the force application unit 74 to the cross beam 73, the cross beam 73 is connected with the force bearing frame 71 through the pressure sensor 72, and connecting rods on two sides of the force bearing frame 71 are connected with two ends of the plate spring assembly 75 through a large pin 76 and drive the plate spring assembly 76 to move; as shown in fig. 2, the plate spring assembly 75 includes a plate spring body 753, a guide sleeve 751 disposed on one side of the plate spring body 753, and a force applying roller 756 disposed on the other side of the plate spring body, wherein the guide sleeve 751 is installed in cooperation with a guide rail 8 fixedly connected to a base of the testing machine, and when the force applying unit outputs a load force, the plate spring assembly is moved in a direction defined by the guide rail 8 through the guide sleeve 751 thereof.
In this embodiment, as shown in fig. 1, the force bearing frame 71 is a U-shaped frame structure, and is composed of a support plate and force bearing frames disposed at two side ends of the support plate, the support plate is connected to the cross beam 73 through the pressure sensor 72, the two side ends of the cross beam 73 penetrate through the force bearing frames, the lower surfaces of the two side ends are attached to the limiting surfaces of the force bearing frames, one ends of the force bearing frames far away from the support plate are connected to the plate spring assemblies 75, the U-shaped frame structure is optimized in the scheme, pressure is converted into tension, the tension sensor is not well fixed, and the tension sensor is large, the sensor is converted into pressure, and the pressure sensor is better mounted and has a small size.
In this embodiment, as shown in fig. 1, two force applying units 74 are provided and symmetrically disposed on two sides of the carrier, a fixed end of each force applying unit 74 is connected to the frame, and a telescopic end thereof is connected to an end of the cross beam; the mode of pressurizing at two ends is adopted to pull the force application roller to apply force to the force application turntable, the mode belongs to a stable mode, and an unstable scheme is provided if the force application unit is directly used for applying pressure to the rolling pair; the force application unit 74 described in this embodiment may be any one of a hydraulic cylinder, an air cylinder, or an electric push rod.
In this embodiment, as shown in fig. 2, the plate spring assembly mainly comprises a guide sleeve 751, a plate spring body 753, a roller holder 754, a spring holder 755, a force application roller 756, and a temperature sensor 759, wherein the guide sleeve 751 is disposed on one side of the plate spring body 753 for mounting on a guide rail 8, the other side of the plate spring body 753 is provided with the roller holder 754, the plate spring body 753 is fixedly connected with the guide sleeve 751 and the roller holder 754 through the spring holder 755 to form an integral structure, the roller holder 754 is provided with a connecting ear plate, the connecting ear plate forms a rotating connection with the force application roller 756 through a needle bearing 757 and a pin 758, two ends of the plate spring body 753 are further provided with pin holes 752, the plate spring pin holes 752 are connected with a bearing frame on the bearing frame 71 through large pins 76, and the temperature sensor 759 is disposed on an upper end face of the guide sleeve 751 for detecting a temperature change of a friction pair test piece.
In the scheme, the assembling process is as follows: the guide sliding rail is arranged on the base, the plate spring assembly is provided with a guide sleeve which can slide on the guide sliding rail, and the roller bracket, the plate spring body and the guide sleeve are integrally fixed together by the spring fixing frame; the longest leaf spring in the leaf spring body is provided with a pin hole, a big pin penetrates through a bearing frame and the pin hole of the leaf spring to be hinged with the bearing frame, a pressure sensor is arranged in the bearing frame, one end of the pressure sensor is connected with the bearing frame, a cross beam at one end is connected, the specific connection form is different according to the difference of the pressure sensor, some are fixed by small screws, some can be glued, the cross beam penetrates through a bearing frame, the lower surface of the cross beam is attached to the limiting surface of the bearing frame of the rack, the cross beam can slightly slide on the bearing frame due to stress and can greatly slide on the limiting surface together with the bearing frame, a hydraulic cylinder is preferably used as a force application unit, the hydraulic cylinder is fixed on the rack in a hinged mode, a cylinder sleeve of the hydraulic cylinder is attached to one section of the lower surface of the limiting surface of the bearing frame, and a piston rod of the hydraulic cylinder pushes against two ends of the cross beam to apply pressure.
Wherein, the force transmission route is as follows: the hydraulic cylinder extends out to provide pressure, the pressure pushes the cross beam to move, the cross beam pushes the pressure sensor to move, the pressure sensor transmits force to the force bearing frame, the force bearing frame transmits the force to the plate spring body through the big pin, the plate spring body pushes the roller support to transmit the force to the force application roller, the force application roller compresses the force application turntable and drives the force application turntable to rotate through contacting with the force application turntable, and the force application turntable transmits lateral force to the rolling friction pair.
It should be noted that: because the friction pair rotates rapidly, the temperature sensors adopt infrared temperature measurement and are arranged in a high-low mode, the detection point positions of the temperature sensors are required to correspond to different positions in the axial length direction of the friction pair, in actual operation, the specific position of the friction pair to be measured is determined through specific test exploration, and the typical position with obvious temperature rise is determined.
The method for detecting the lubricating property of the friction pair by applying the loading mechanism to the test device comprises the following test procedures:
designing a friction pair test piece according to the design size of an actual rolling friction pair, and paying attention to the fact that the size matched with a fixed frame needs to be designed on a test piece shaft, and the shaft neck and the hexagonal structure matched with the fixed frame are at least consistent;
and (3) turning on a power supply, namely electrifying the sensor, the motor and the frequency converter, outputting a force application unit in the loading mechanism, adjusting the telescopic rod to be directly opposite to the cross beam and ensuring that the force application roller is in light contact with the force application turntable, and clicking a test start button after filling quantitative lubricating grease into a rolling friction pair test piece.
The motor runs according to a fixed acceleration and deceleration program, the force application unit applies pressure according to the force set by the program, the feedback value of the pressure sensor is used as the closed-loop condition of pressure regulation to control the hydraulic cylinder, the temperature data transmitted by the temperature sensor is continuously written into the program for recording, and the loaded load value and the rotating speed value are also recorded, the lubricating grease extruded from the lubricating pair can be sampled and analyzed within a certain time interval, and the loading and temperature rise rules of the friction pair under the lubricating effect of the lubricating grease are obtained.
It should be noted that, although the present invention has been described with reference to the above embodiments, the present invention may have other embodiments. Various modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention, and it is intended that all such modifications and changes fall within the scope of the appended claims and their equivalents.
Claims (8)
1. The utility model provides a vice lubricating property loading mechanism for testing machine of rolling friction, this loading mechanism installs in the testing machine frame, its characterized in that: including load frame, pressure sensor, crossbeam, application of force unit and leaf spring assembly, the loading power of application of force unit output is applyed on the crossbeam, the crossbeam passes through pressure sensor and connects load frame, load frame connects leaf spring assembly and drives leaf spring assembly through the connecting rod of its both sides and removes, leaf spring assembly includes the leaf spring body, sets up at the uide bushing of leaf spring body one side and sets up the application of force roller at leaf spring body opposite side, the uide bushing cooperates the installation with the direction slide rail in the testing machine frame, and when application of force unit output loading power, leaf spring assembly follows through its uide bushing the direction that the direction slide rail was injectd removes.
2. The loading mechanism for the rolling friction pair lubricating property testing machine according to claim 1, characterized in that: the bearing frame is of a U-shaped frame structure and consists of a support plate and bearing frames arranged at the end parts of two sides of the support plate.
3. The loading mechanism for the rolling friction pair lubricating property testing machine according to claim 2, characterized in that: the supporting plate is connected with the cross beam through the pressure sensor, the end parts of the two sides of the cross beam penetrate through the bearing frame, the lower surface of the bearing frame is attached to the limiting surface of the bearing frame, and one end, far away from the supporting plate, of the bearing frame is connected with the plate spring assembly.
4. The loading mechanism for the rolling friction pair lubricating property testing machine according to claim 1 is characterized in that: the two force application units are symmetrically arranged on two sides of the bearing frame, the fixed end of each force application unit is connected with the frame, and the telescopic end of each force application unit is connected with the end part of the cross beam.
5. The loading mechanism for the rolling friction pair lubricating property testing machine according to claim 4, characterized in that: the force application unit is any one of a hydraulic cylinder, an air cylinder or an electric push rod.
6. The loading mechanism for the rolling friction pair lubricating property testing machine according to claim 1, characterized in that: the plate spring assembly is characterized in that a guide sleeve is arranged on one side of a plate spring body, a roller support is arranged on the other side of the plate spring body, the plate spring body is fixedly connected with the guide sleeve and the roller support into an integrated structure through a spring fixing frame, the force application roller is rotatably arranged on the roller support, plate spring pin holes are further formed in two ends of the plate spring body, and the plate spring pin holes are connected with a force bearing frame through pin shafts.
7. The loading mechanism for the rolling friction pair lubricating property testing machine according to claim 6, characterized in that: the roller support is provided with a connecting lug plate which is rotationally connected with the force application roller through a needle bearing and a pin shaft.
8. The loading mechanism for the rolling friction pair lubricating property testing machine according to claim 6, characterized in that: the upper end of the guide sleeve is also provided with a plurality of temperature sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220049639.9U CN217688481U (en) | 2022-01-10 | 2022-01-10 | Loading mechanism for rolling friction pair lubricating property testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220049639.9U CN217688481U (en) | 2022-01-10 | 2022-01-10 | Loading mechanism for rolling friction pair lubricating property testing machine |
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| Publication Number | Publication Date |
|---|---|
| CN217688481U true CN217688481U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220049639.9U Active CN217688481U (en) | 2022-01-10 | 2022-01-10 | Loading mechanism for rolling friction pair lubricating property testing machine |
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| CN (1) | CN217688481U (en) |
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- 2022-01-10 CN CN202220049639.9U patent/CN217688481U/en active Active
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