CN214703470U

CN214703470U - Hydraulic oil aging test device

Info

Publication number: CN214703470U
Application number: CN202120507235.5U
Authority: CN
Inventors: 高建华; 周荀
Original assignee: Tianjin Institute of Advanced Equipment of Tsinghua University
Current assignee: Tianjin Institute of Advanced Equipment of Tsinghua University
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-11-12
Anticipated expiration: 2031-03-10

Abstract

The utility model relates to the technical field of hydraulic oil performance detection, in particular to a hydraulic oil aging test device which comprises an oil cylinder, an oxygen supply device, a stirring device and an abrasive particle manufacturing device, wherein hydraulic oil is arranged in the oil cylinder; the oxygen supply device inputs oxygen below the oil surface of the hydraulic oil; the stirring device comprises a first driver and a stirring paddle, the stirring paddle is arranged below the oil surface of the hydraulic oil, and the first driver drives the stirring paddle to rotate; the abrasive particle manufacturing device comprises a grinding block, a grinding wheel and a second driver, the grinding wheel and the grinding block are provided with a first position and a second position, the first position is mutually abutted, the second driver drives the grinding wheel to move and enables the grinding wheel and the grinding block to slide relatively to generate abrasive particles, and the abrasive particles are arranged in the hydraulic oil. The device solves the problem that the metal sheet is not used for generating the catalytic action, but the metal abrasive particles are generated in the running process of the equipment, so that certain errors exist between the test result and the result obtained by actual use.

Description

Hydraulic oil aging test device

Technical Field

The utility model relates to a hydraulic oil performance detects technical field, especially relates to a hydraulic oil aging test device.

Background

The hydraulic oil is a hydraulic medium used by a hydraulic system utilizing hydraulic pressure energy, and plays roles of energy transfer, wear resistance, system lubrication, corrosion resistance, rust resistance, cooling and the like in the hydraulic system. For hydraulic oil, the requirements of a hydraulic device on the viscosity of liquid at the working temperature and the starting temperature are firstly met, and the viscosity change of the hydraulic oil is directly related to hydraulic action, transmission efficiency and transmission precision, so that the viscosity-temperature performance and the shear stability of the oil are also required to meet various requirements proposed by different purposes.

At present, the evaluation of the aging of hydraulic oil is mainly carried out by oxidation stability, and the oxidation stability test equipment is generally as follows: putting a metal sheet as a catalyst into a certain amount of standing oil sample, inputting a certain amount of oxygen at a certain temperature, and measuring related physicochemical indexes of the oil sample after oxidation to evaluate the oxidation stability of the hydraulic oil after specified test time.

However, according to the use condition of the equipment, the metal sheet is not actually used for generating the catalytic action, but the metal abrasive particles generated by abrasion in the operation process of the equipment enter the hydraulic oil to promote the aging of the hydraulic oil, so that a certain error exists between the test result and the result obtained by actual use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a hydraulic oil aging test device to solve in the prior art actually produce catalytic action not the sheetmetal, but the equipment operation in-process because the metal grit that the wearing and tearing produced enters into hydraulic oil and has promoted the ageing of hydraulic oil, consequently causes the test result and the result that the in-service use reachs to have certain error the problem.

The utility model provides a hydraulic oil aging test device, which comprises an oil cylinder, an oxygen supply device, a stirring device and an abrasive particle manufacturing device, wherein hydraulic oil is filled in the oil cylinder; the oxygen supply device inputs oxygen below the oil surface of the hydraulic oil; the stirring device comprises a first driver and a stirring paddle, the stirring paddle is arranged below the oil surface of the hydraulic oil, and the first driver drives the stirring paddle to rotate; the abrasive particle manufacturing device comprises a pair of grinding blocks, a grinding wheel and a second driver, wherein the grinding wheel and the pair of grinding blocks are provided with a first position and a second position, the first position is mutually abutted, the second position is mutually separated, the second driver drives the grinding wheel to move under the first position, the grinding wheel and the pair of grinding blocks slide relatively to generate abrasive particles, and the abrasive particles are placed in the hydraulic oil.

As the preferred technical scheme of the hydraulic oil aging test device, the oxygen supply device comprises an oxygen cylinder, an oxygen cylinder valve and an oxygen supply pipe, one end of the oxygen cylinder valve is connected with the oxygen cylinder, the other end of the oxygen cylinder valve is connected with one end of the oxygen supply pipe, and the other end of the oxygen supply pipe is arranged below the oil surface of the hydraulic oil.

As a preferred technical scheme of the hydraulic oil aging test device, the stirring device further comprises a transmission rod, one end of the transmission rod is fixedly connected with the output shaft of the first driver, and the other end of the transmission rod is fixedly connected with the stirring paddle.

As a preferred technical scheme of the hydraulic oil aging test device, a through groove is formed in a top plate of the oil cylinder opposite to the oil surface of the hydraulic oil, and the grinding wheel is arranged in the oil cylinder and partially extends out of the oil cylinder from the through groove;

the abrasive particle manufacturing device further comprises a loading block and a plurality of guide posts, the guide posts are arranged on the top plate at intervals along the circumferential direction of the through groove, the loading block is provided with a plurality of guide holes, the guide holes are sleeved on the guide posts in a one-to-one correspondence mode, and the grinding block is fixedly connected to one end, opposite to the grinding wheel, of the loading block.

As the preferable technical scheme of the hydraulic oil aging test device, the pair of grinding blocks and the loading block are in threaded connection through bolts.

As a preferred technical solution of the hydraulic oil aging test device, the abrasive grain manufacturing device further includes a plurality of springs, the plurality of springs are sleeved on the plurality of guide posts in a one-to-one correspondence manner, one end of each spring abuts against the top plate, the other end of each spring abuts against the loading block, and the springs enable the pair of grinding blocks and the grinding wheel to be located at the second position;

the abrasive particle manufacturing device further comprises a plurality of weights, the weights are arranged at one ends, back to back, of the loading block and the grinding wheel, and the weights enable the grinding block and the grinding wheel to be located at the first position.

As an optimal technical scheme of the hydraulic oil aging test device, one end, opposite to the grinding wheel, of the loading block is fixedly connected with a stand column, and a plurality of weights are sleeved on the stand column.

As a preferred technical scheme of the hydraulic oil aging test device, the abrasive grain manufacturing device further comprises a grinding wheel spindle, the second driver is arranged outside the oil cylinder, one end of the grinding wheel spindle is fixedly connected with an output shaft of the second driver, and the other end of the grinding wheel spindle extends into the oil cylinder and is fixedly connected with the grinding wheel.

As a preferred technical scheme of the hydraulic oil aging test device, a through hole is formed in the side wall of the oil cylinder, and the grinding wheel shaft extends into the through hole;

the abrasive particle manufacturing device further comprises a supporting bearing, an inner ring of the supporting bearing is in interference fit with the grinding wheel spindle, and an outer ring of the supporting bearing is in interference fit with the hole wall of the through hole.

As the preferable technical scheme of the hydraulic oil aging test device, the oil cylinder is made of transparent materials.

The utility model has the advantages that:

the utility model provides a hydraulic oil aging test device, which comprises an oil cylinder, an oxygen supply device, a stirring device and an abrasive grain manufacturing device, wherein hydraulic oil is filled in the oil cylinder; the oxygen supply device inputs oxygen below the oil surface of the hydraulic oil; the stirring device comprises a first driver and a stirring paddle, the stirring paddle is arranged below the oil surface of the hydraulic oil, and the first driver drives the stirring paddle to rotate; the abrasive particle manufacturing device comprises a grinding block, a grinding wheel and a second driver, the grinding wheel and the grinding block are provided with a first position and a second position, the first position is mutually abutted, the second driver drives the grinding wheel to move and enables the grinding wheel and the grinding block to slide relatively to generate abrasive particles, and the abrasive particles are arranged in the hydraulic oil. After hydraulic oil for testing is put into the oil cylinder, a first driver is started, and an output shaft of the first driver drives a stirring paddle to stir the hydraulic oil; turning on an oxygen supply device, adjusting the flow rate of oxygen entering test hydraulic oil, and inputting the oxygen into the hydraulic oil; starting a second driver, enabling the grinding wheel and the opposite grinding block to be located at a first position (when the grinding wheel and the opposite grinding block are not needed to generate the grinding particles, the grinding wheel and the opposite grinding block are located at a second position), enabling the opposite grinding block to be in contact with the grinding wheel to form a friction pair, newly generating the grinding particles in the friction process, and enabling the grinding particles to enter hydraulic oil to participate in the aging catalysis of the hydraulic oil; after the catalytic action is carried out for a fixed time, the aging condition of the hydraulic oil is evaluated by observing the color and the physical and chemical indexes of the hydraulic oil. The device solves the problems that in the related technology, the metal sheet is not actually used for generating catalytic action, but the metal abrasive particles generated by abrasion in the running process of equipment enter hydraulic oil to promote the aging of the hydraulic oil, so that certain errors exist between the test result and the result obtained by actual use.

Drawings

Fig. 1 is the structural schematic diagram of the hydraulic oil aging test device in the embodiment of the present invention.

In the figure:

1. an oil cylinder; 11. a top plate; 111. a through groove;

2. an oxygen supply device; 21. an oxygen cylinder; 22. an oxygen cylinder valve; 23. an oxygen delivery tube;

3. a stirring device; 31. a first driver; 32. a stirring paddle; 33. a transmission rod;

4. an abrasive grain manufacturing device; 41. grinding blocks are paired; 42. a grinding wheel; 43. a second driver; 44. loading a block; 441. a column; 45. a guide post; 46. a spring; 47. a weight; 48. a grinding wheel spindle; 49. and supporting the bearing.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1, the present embodiment provides a hydraulic oil aging test apparatus, which includes an oil cylinder 1, an oxygen supply apparatus 2, a stirring apparatus 3, and an abrasive grain manufacturing apparatus 4, wherein hydraulic oil is filled in the oil cylinder 1; the oxygen supply device 2 inputs oxygen below the oil surface of the hydraulic oil; the stirring device 3 comprises a first driver 31 and a stirring paddle 32, the stirring paddle 32 is arranged below the oil surface of the hydraulic oil, and the first driver 31 drives the stirring paddle 32 to rotate; the abrasive grain manufacturing device 4 comprises a pair of grinding blocks 41, a grinding wheel 42 and a second driver 43, wherein the grinding wheel 42 and the pair of grinding blocks 41 have a first position in mutual contact and a second position in mutual separation, and in the first position, the second driver 43 drives the grinding wheel 42 to move and enables the grinding wheel 42 and the pair of grinding blocks 41 to slide relatively to generate abrasive grains, and the abrasive grains are placed in hydraulic oil. After the hydraulic oil for testing is put into the oil cylinder 1, the first driver 31 is started, and an output shaft of the first driver 31 drives the stirring paddle 32 to stir the hydraulic oil; turning on the oxygen supply device 2, adjusting the flow rate of oxygen entering the test hydraulic oil, and inputting the oxygen into the hydraulic oil; starting the second driver 43, enabling the grinding wheel 42 and the counter grinding block 41 to be located at the first position (when no grinding particles are needed, the grinding wheel 42 and the counter grinding block 41 are located at the second position), enabling the counter grinding block 41 to be in contact with the grinding wheel 42 to form a friction pair, newly generating the grinding particles in the friction process, and enabling the grinding particles to enter hydraulic oil to participate in the aging catalysis of the hydraulic oil; after the catalytic action is carried out for a fixed time, the aging condition of the hydraulic oil is evaluated by observing the color and the physical and chemical indexes of the hydraulic oil. The device solves the problems that in the related technology, the metal sheet is not actually used for generating catalytic action, but the metal abrasive particles generated by abrasion in the running process of equipment enter hydraulic oil to promote the aging of the hydraulic oil, so that certain errors exist between the test result and the result obtained by actual use.

Optionally, the oxygen supply device 2 comprises an oxygen cylinder 21, an oxygen cylinder valve 22 and an oxygen tube 23, wherein one end of the oxygen cylinder valve 22 is connected with the oxygen cylinder 21, the other end is connected with one end of the oxygen tube 23, and the other end of the oxygen tube 23 is arranged below the oil surface of the hydraulic oil. In this embodiment, the oxygen cylinder valve 22 can control the speed and on/off of the oxygen supply from the oxygen cylinder 21.

Optionally, the stirring device 3 further comprises a transmission rod 33, one end of the transmission rod 33 is fixedly connected with the output shaft of the first driver 31, and the other end of the transmission rod 33 is fixedly connected with the stirring paddle 32. In this embodiment, the transmission rods 33 with different lengths can be selected according to different depths of the hydraulic oil, and the arrangement can ensure that the stirring paddles 32 are always below the oil level of the hydraulic oil.

Optionally, a through groove 111 is formed in the top plate 11 of the oil cylinder 1 opposite to the oil surface of the hydraulic oil, and the grinding wheel 42 is arranged in the oil cylinder 1 and partially extends out of the oil cylinder 1 from the through groove 111; the abrasive grain manufacturing apparatus 4 further includes a loading block 44 and a plurality of guide posts 45, the guide posts 45 are disposed on the top plate 11 at intervals along the circumferential direction of the through groove 111, the loading block 44 is provided with a plurality of guide holes, the plurality of guide posts 45 are sleeved in the plurality of guide holes in a one-to-one correspondence manner, and one end of the loading block 44 opposite to the grinding wheel 42 is fixedly connected with the grinding block 41. In this embodiment, the loading block 44 is sleeved on the guide post 45, the loading block 44 can slide along the axial direction of the guide post 45, one end of the loading block 44 opposite to the grinding wheel 42 is fixedly connected with the opposite grinding block 41, when the loading block 44 is located at the first position, the loading block 44 drives the opposite grinding block 41 to move, the opposite grinding block 41 and the grinding wheel 42 are abutted to each other, and when the loading block 44 is located at the second position, the opposite grinding block 41 is driven to move, and the opposite grinding block 41 and the grinding wheel 42 are separated from each other.

Alternatively, the grinding block 41 and the loading block 44 are screwed by bolts. In this embodiment, the grinding block 41 is a consumable, and therefore, it is fixed by a bolt to facilitate the replacement in the later period.

Optionally, the abrasive particle manufacturing apparatus 4 further includes a plurality of springs 46, the plurality of springs 46 are sleeved on the plurality of guide posts 45 in a one-to-one correspondence manner, one end of the spring 46 abuts against the top plate 11, the other end of the spring 46 abuts against the loading block 44, and the plurality of springs 46 enable the counter grinding block 41 and the grinding wheel 42 to be located at the second position.

The abrasive grain manufacturing apparatus 4 further includes a plurality of weights 47, the weights 47 are disposed at an end of the loading block 44 opposite to the grinding wheel 42, and the weights 47 enable the grinding block 41 and the grinding wheel 42 to be located at the first position.

In this embodiment, the spring 46 can lift the loading block 44, and then make the grinding block 41 and the grinding wheel 42 be in the second position, set up the elasticity that the weight 47 can overcome the spring 46, and make the grinding block 41 and the grinding wheel 42 be in the first position, simultaneously, can improve the contact pressure between grinding block 41 and the grinding wheel 42 through increasing the weight 47, can effectual increase to the frictional force between grinding block 41 and the grinding wheel 42, improve the production efficiency of grit.

Optionally, a column 441 is fixedly connected to an end of the loading block 44 opposite to the grinding wheel 42, and a plurality of weights 47 are sleeved on the column 441. In this embodiment, since the grinding wheel 42 and the counter grinding block 41 vibrate during relative frictional movement, the weight 47 on the loading block 44 is likely to fall off due to the vibration, and the column 441 provided on the loading block 44 can prevent the weight 47 from falling off.

Optionally, the abrasive grain manufacturing apparatus 4 further includes a grinding wheel shaft 48, the second driver 43 is disposed outside the oil cylinder 1, one end of the grinding wheel shaft 48 is fixedly connected to an output shaft of the second driver 43, and the other end of the grinding wheel shaft 48 extends into the oil cylinder 1 and is fixedly connected to the grinding wheel 42. In this embodiment, the second actuator 43 is disposed outside the oil cylinder 1, which is beneficial to maintenance of the second actuator 43, and the second actuator 43 is a motor.

Optionally, a through hole is formed in the side wall of the oil cylinder 1, and the grinding wheel shaft 48 extends into the through hole; the abrasive grain manufacturing apparatus 4 further includes a support bearing 49, an inner ring of the support bearing 49 is in interference fit with the grinding spindle 48, and an outer ring of the support bearing 49 is in interference fit with the hole wall of the through hole. In this embodiment, since the grinding wheel 42 needs to operate at a high rotation speed, the grinding wheel spindle 48 directly penetrates through the through hole, and the grinding wheel spindle 48 collides with the oil cylinder 1 during operation, thereby causing vibration of the oil cylinder 1, and the swinging of the grinding wheel spindle 48 also causes stable operation between the grinding wheel 42 and the counter grinding block 41, so that the swinging of the grinding wheel spindle 48 in a high-speed rotation direction can be reduced by arranging the support bearing 49 in the through hole, and the operation stability of the grinding wheel 42 can be improved.

Optionally, the oil cylinder 1 is made of a transparent material. In this embodiment, the oil cylinder 1 is made of transparent material, so that experimenters can observe the change state of the hydraulic oil in the oil cylinder 1 conveniently.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a hydraulic oil aging testing device which characterized in that includes:

the hydraulic oil pump comprises an oil cylinder (1), wherein hydraulic oil is filled in the oil cylinder (1);

the oxygen supply device (2) inputs oxygen below the oil surface of the hydraulic oil by the oxygen supply device (2);

the stirring device (3) comprises a first driver (31) and a stirring paddle (32), the stirring paddle (32) is arranged below the oil surface of the hydraulic oil, and the first driver (31) drives the stirring paddle (32) to rotate;

the abrasive particle manufacturing device (4) comprises a pair of grinding blocks (41), a grinding wheel (42) and a second driver (43), wherein the grinding wheel (42) and the pair of grinding blocks (41) are provided with a first position and a second position, the first position and the second position are mutually abutted and separated, the second driver (43) drives the grinding wheel (42) to move under the first position, the grinding wheel (42) and the pair of grinding blocks (41) slide relatively to generate abrasive particles, and the abrasive particles are placed in the hydraulic oil.

2. The hydraulic oil aging test device according to claim 1, wherein the oxygen supply device (2) comprises an oxygen cylinder (21), an oxygen cylinder valve (22) and an oxygen supply pipe (23), one end of the oxygen cylinder valve (22) is connected with the oxygen cylinder (21), the other end of the oxygen cylinder valve is connected with one end of the oxygen supply pipe (23), and the other end of the oxygen supply pipe (23) is arranged below the oil surface of the hydraulic oil.

3. The hydraulic oil aging test device according to claim 1, wherein the stirring device (3) further comprises a transmission rod (33), one end of the transmission rod (33) is fixedly connected with an output shaft of the first driver (31), and the other end of the transmission rod (33) is fixedly connected with the stirring paddle (32).

4. The hydraulic oil aging test device according to claim 1, wherein a top plate (11) of the oil cylinder (1) opposite to the oil surface of the hydraulic oil is provided with a through groove (111), the grinding wheel (42) is arranged in the oil cylinder (1) and part of the grinding wheel extends out of the oil cylinder (1) from the through groove (111);

the abrasive particle manufacturing device (4) further comprises a loading block (44) and a plurality of guide posts (45), the guide posts (45) are arranged on the top plate (11) at intervals along the circumferential direction of the through groove (111), the loading block (44) is provided with a plurality of guide holes, the guide holes are correspondingly sleeved on the guide posts (45), and the loading block (44) and one end, opposite to the grinding wheel (42), of the loading block (41) are fixedly connected.

5. The hydraulic oil aging test device according to claim 4, wherein the pair of grinding blocks (41) and the loading block (44) are screwed by bolts.

6. The hydraulic oil aging test device according to claim 4, wherein the abrasive grain manufacturing device (4) further comprises a plurality of springs (46), the plurality of springs (46) are sleeved on the plurality of guide posts (45) in a one-to-one correspondence manner, one end of each spring (46) abuts against the top plate (11), the other end of each spring (46) abuts against the loading block (44), and the springs (46) enable the pair of grinding blocks (41) and the grinding wheel (42) to be located at the second position;

the abrasive particle manufacturing device (4) further comprises a plurality of weights (47), the weights (47) are arranged at one end of the loading block (44) opposite to the grinding wheel (42), and the weights (47) enable the grinding block pair (41) and the grinding wheel (42) to be located at the first position.

7. The hydraulic oil aging test device according to claim 6, wherein a column (441) is fixedly connected to one end of the loading block (44) opposite to the grinding wheel (42), and the column (441) is sleeved with a plurality of weights (47).

8. The hydraulic oil aging test device according to claim 1, wherein the abrasive grain manufacturing device (4) further comprises a grinding wheel spindle (48), the second driver (43) is arranged outside the oil cylinder (1), one end of the grinding wheel spindle (48) is fixedly connected with an output shaft of the second driver (43), and the other end of the grinding wheel spindle (48) extends into the oil cylinder (1) and is fixedly connected with the grinding wheel (42).

9. The hydraulic oil aging test device according to claim 8, wherein the side wall of the oil cylinder (1) is provided with a through hole, and the grinding wheel shaft (48) extends into the through hole;

the abrasive particle manufacturing device (4) further comprises a supporting bearing (49), the inner ring of the supporting bearing (49) is in interference fit with the grinding wheel shaft (48), and the outer ring of the supporting bearing (49) is in interference fit with the hole wall of the through hole.

10. The hydraulic oil aging test device according to claim 1, wherein the oil cylinder (1) is made of a transparent material.