CN113109045A - Endurance test method of booster assembly - Google Patents
Endurance test method of booster assembly Download PDFInfo
- Publication number
- CN113109045A CN113109045A CN202110266771.5A CN202110266771A CN113109045A CN 113109045 A CN113109045 A CN 113109045A CN 202110266771 A CN202110266771 A CN 202110266771A CN 113109045 A CN113109045 A CN 113109045A
- Authority
- CN
- China
- Prior art keywords
- booster assembly
- temperature
- piston
- booster
- heat insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010998 test method Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 47
- 238000009413 insulation Methods 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 41
- 239000010720 hydraulic oil Substances 0.000 claims description 34
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000005299 abrasion Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 12
- 238000005259 measurement Methods 0.000 description 9
- 238000004321 preservation Methods 0.000 description 9
- 230000000740 bleeding effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to a durability test method of a booster assembly, which comprises the following steps: according to the new state of a friction plate of a clutch in the whole vehicle, the position of a piston of a booster assembly is adjusted on a rack through a push rod, and the booster assembly is placed in a heat insulation box; carrying out a durability cycle test of the booster assembly sequentially according to the sequence of normal temperature, high temperature and low temperature; according to the state of a friction plate of a clutch in the whole automobile after being worn, the position of a piston of the booster assembly is adjusted on a rack through a push rod, and the booster assembly is placed in the heat insulation box; and carrying out the endurance cycle test of the booster assembly according to the sequence of normal temperature, high temperature and low temperature. The durability test method for the booster assembly can truly simulate the actual working condition environment of a vehicle under various temperature environments, effectively verify the reliability of the booster assembly, reduce the failure rate of the booster assembly on the market and realize the sealing detection of multiple measuring points of the piston.
Description
Technical Field
The invention relates to the field of hydraulic technology and pneumatic technology, in particular to a durability test method for a booster assembly.
Background
At present, a booster assembly is a power output actuating mechanism in a clutch system, the booster assembly pushes a separation shifting fork through a push rod, and a clutch is separated and combined remotely, so that manual gear selection and gear shifting operations are conveniently realized.
In the related art, the reliability and the smoothness of the booster assembly directly influence the service life and the applicable environment of a clutch system of a whole vehicle, so the working durability of the booster assembly is very critical, the booster assembly with good durability can ensure the separation and combination reliability of a clutch, and in order to ensure the reliability of the booster assembly, a durability test needs to be carried out on the booster assembly so as to determine whether the reliability of the durable working can meet the corresponding requirements in the durability test standard of the whole vehicle.
Therefore, there is a need for a durability test method for a booster assembly that overcomes the above problems.
Disclosure of Invention
The embodiment of the invention provides a durability test method for a booster assembly, which aims to solve the problem that in the related art, the durability test needs to be carried out on the booster assembly to determine whether the reliability of the durability work of the booster assembly can meet the corresponding requirements in the durability test standard of the whole vehicle.
In a first aspect, a method for endurance testing of a booster assembly is provided, comprising the steps of: adjusting the position of a piston of a booster assembly according to the state of a friction plate of a clutch in the whole vehicle before abrasion, and placing the booster assembly in a heat insulation box; sequentially controlling the temperature in the heat insulation box according to the sequence of normal temperature, high temperature and low temperature, and simultaneously driving the piston to reciprocate at each temperature; adjusting the position of a piston of the booster assembly according to the state of a friction plate of a clutch in the whole automobile after being worn, and placing the booster assembly in the heat insulation box; and controlling the temperature in the heat insulation box according to the sequence of normal temperature, high temperature and low temperature, and driving the piston to reciprocate at each temperature.
In some embodiments, before adjusting the position of the piston of the booster assembly according to the state before the friction plate of the clutch is worn in the whole vehicle and placing the booster assembly in the heat insulation box, the method further comprises the following steps: and standing the booster assembly for at least 3 hours in a room-temperature environment.
In some embodiments, the booster assembly has a cylinder block, and the piston position of the booster assembly is adjusted according to a state before a friction plate of a clutch in a whole vehicle is worn, and the booster assembly is placed in an insulation can, including: and adjusting a piston of the booster assembly to the middle position of the cylinder body of the air cylinder, and then placing the booster assembly in the heat insulation box.
In some embodiments, the booster assembly having a cylinder block, the booster assembly sequentially controlling the temperature in the heat insulation box in the order of normal temperature, high temperature, and low temperature, and simultaneously driving the piston to reciprocate at each temperature, includes: adjusting the temperature in the heat insulation box to be in a normal temperature state, filling gas into an air inlet of the booster assembly and an air inlet of the gear shifting control valve in the normal temperature state, filling hydraulic oil into an oil inlet of the booster assembly at intervals, and driving the piston to reciprocate; adjusting the temperature in the heat insulation box to be in a high-temperature state, filling gas into an air inlet of the booster assembly and an air inlet of the gear shifting control valve in the high-temperature state, filling hydraulic oil into an oil inlet of the booster assembly at intervals, and driving the piston to reciprocate; and adjusting the temperature in the heat insulation box to be in a low-temperature state, filling gas into an air inlet of the booster assembly and an air inlet of the gear shifting control valve in the low-temperature state, filling hydraulic oil into an oil inlet of the booster assembly at intervals, and driving the piston to reciprocate.
In some embodiments, the test temperature for the normal temperature is 60 ℃ ± 3 ℃, the test temperature for the high temperature is 100 ℃ ± 3 ℃, and the test temperature for the low temperature is-40 ℃ ± 3 ℃.
In some embodiments, the range of the air pressure charged into the air inlet of the booster assembly is 0.8-1 Mpa, the range of the air pressure charged into the air inlet of the gear shifting control valve is 0.8-1 Mpa, and the oil pressure charged into the oil inlet of the booster assembly is 4 Mpa.
In some embodiments, in step a1, the piston is driven to reciprocate 15-30 times per minute, and at least 37 ten thousand times in total; in the step a2, driving the piston to reciprocate 15-30 times per minute, and at least 12.5 ten thousand times in total; in step a3, the piston is driven to reciprocate 4-8 times per minute, and at least 5000 times in total.
In some embodiments, before the piston position of the booster assembly is adjusted according to the state of a clutch in the whole vehicle after a friction plate is worn, and the booster assembly is placed in the heat insulation box, the temperature in the heat insulation box is adjusted to room temperature, and the booster assembly is taken out of the heat insulation box after standing for a preset time.
In some embodiments, the booster assembly has a push rod connected to the piston, and the booster assembly is placed in the heat insulation box by adjusting the position of the piston according to the state of the friction plate of the clutch in the entire vehicle after being worn, including: and according to the state of the friction plate of the clutch in the whole automobile after being abraded, the piston of the booster assembly is moved to a preset position in the direction close to the push rod, and then the booster assembly is placed in the heat insulation box again.
In some embodiments, after the temperature in the thermal insulation box is sequentially controlled according to the sequence of normal temperature, high temperature, and low temperature, and the piston is driven to reciprocate at each temperature, the method further includes: taking the position of one end of a cylinder body of the booster assembly, which is moved by the piston, as an initial point, and taking a measuring point every time at a distance of delta s from the initial point to the other end of the cylinder body; and filling gas and hydraulic oil into the booster assembly, sequentially moving the piston to each measuring point from the initial point, and carrying out sealing detection on the booster assembly at each measuring point.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a durability test method of a booster assembly, because the position of a piston of the booster assembly is adjusted according to the state before a friction plate of a clutch is abraded, and the booster assembly is placed in the heat preservation box to drive the piston of the booster assembly to reciprocate, so that the booster assembly can carry out endurance tests for a plurality of times in normal temperature, high temperature and low temperature environments in turn, then the position of the piston of the booster assembly is adjusted according to the state of the friction plate of the clutch after being worn, the booster assembly is placed in the heat preservation box to drive the piston of the booster assembly to reciprocate again, so that the booster assembly can perform endurance tests for multiple times in normal-temperature, high-temperature and low-temperature environments in sequence, the actual working condition environment of a vehicle can be truly simulated in multiple temperature environments, the reliability of the booster assembly is effectively verified, and the market failure rate of the booster assembly is reduced; meanwhile, multiple endurance tests are carried out on the positions, corresponding to the booster assembly, of the worn friction plates, unknown risks caused by changes of the moving range of the piston due to the fact that the friction plates are worn and the moving range of the piston changes are avoided, multiple endurance tests of the piston in different moving ranges are achieved, and whether the reliability of the booster assembly in the endurance work of multiple installation positions can meet corresponding requirements in the endurance test standards of the whole vehicle can be determined.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for endurance testing a booster assembly according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a booster assembly according to an embodiment of the present invention.
In the figure:
1. a booster assembly;
11. a cylinder block;
12. a piston;
13. a push rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a durability test method for a booster assembly, which can solve the problem that in the related art, the durability test needs to be carried out on the booster assembly to determine whether the reliability of the durability work of the booster assembly can meet the corresponding requirement in the durability test standard of the whole vehicle.
Referring to fig. 1 and 2, a durability test method for a booster assembly according to an embodiment of the present invention may include the following steps:
s101: the position of a piston 12 of the booster assembly 1 is adjusted according to the state of a friction plate of a clutch in the whole vehicle before being worn, and the booster assembly 1 is placed in a heat insulation box.
In some embodiments, before step S101, the method may include: standing booster assembly 1 in a room temperature environment for at least 3 hours, for example, booster assembly 1 is transported from other areas, so that the temperature of booster assembly 1 is different from the room temperature in a laboratory, and standing booster assembly 1 for a period of time is needed to make the temperature of booster assembly 1 approximately the same as the room temperature, so as to facilitate the accuracy of a subsequent endurance test; and it is also possible to mount the booster assembly 1 on a stage for positioning.
In some optional embodiments, in step S101, the booster assembly 1 has a cylinder 11, and the piston 12 can move in the cylinder 11, and one side of the piston 12 is connected to the push rod 13, the adjusting the position of the piston 12 of the booster assembly 1 according to the state before the friction plate of the clutch wears in the whole vehicle, and placing the booster assembly 1 in the heat insulation box may include: the piston 12 of the booster assembly 1 is adjusted to the middle position of the cylinder body 11, that is, when the friction plate of the clutch is in a new plate state, the piston 12 of the booster assembly 1 is approximately located at the middle position of the length of the cylinder body 11, the position of the piston 12 is adjusted on the rack to simulate according to the installation position of the booster assembly 1 corresponding to the new plate state, and the position is defined as the first position of the piston 12, wherein the position of the piston 12 in the cylinder body 11 is adjusted by moving the push rod 13, and then the booster assembly 1 can be integrally placed in the heat insulation box after the position of the piston 12 is adjusted.
S102: the temperature in the thermal insulation box is sequentially controlled according to the sequence of normal temperature, high temperature and low temperature, and the piston 12 is driven to reciprocate at each temperature.
In some embodiments, in step S102, the controlling the temperature inside the thermal container sequentially according to the sequence of the normal temperature, the high temperature, and the low temperature, and simultaneously driving the piston 12 to reciprocate at each temperature may include:
a 1: the temperature in the heat insulation box is adjusted to be in a normal temperature state, air is filled into an air inlet of the booster assembly 1 and an air inlet of the gear shifting control valve at the normal temperature state, hydraulic oil is filled into an oil inlet of the booster assembly 1 at intervals, specifically, the air in the air inlet and the air in the gear shifting control valve is filled all the time, the hydraulic oil in the oil inlet is filled at intervals, after the hydraulic oil is filled into the oil inlet, a valve of an air cavity is opened by the hydraulic oil, the air enters the cylinder body 11, the air in the cylinder body 11 pushes the piston 12 to move in a direction far away from the air inlet, after the oil pressure is removed, the valve of the air cavity is closed, the air in the cylinder body 11 can be slowly discharged from a small channel on one side, the piston 12 automatically returns through a return spring to drive the piston 12 to reciprocate, and the.
a 2: then the temperature in the heat insulation box can be adjusted to be in a high temperature state, gas is filled into the air inlet of the booster assembly 1 and the air inlet of the gear shifting control valve in the high temperature state, hydraulic oil is filled into the oil inlet of the booster assembly 1 at intervals, specifically, the gas in the air inlet and the air inlet of the gear shifting control valve is filled all the time, the hydraulic oil in the oil inlet is filled at intervals, when the oil inlet is filled with hydraulic oil, the hydraulic oil opens the air cavity valve to make air enter the cylinder body 11, and the gas in the cylinder body 11 pushes the piston 12 to move towards the direction far away from the air inlet, when the oil pressure is removed, the air cavity valve is closed, the air in the air cylinder body 11 can be slowly released from a small channel on one side, and the piston 12 automatically returns through a return spring so as to drive the piston 12 to reciprocate, thereby realizing the endurance test in a high-temperature state.
a 3: the temperature in the heat insulation box is adjusted to be in a low-temperature state, gas is filled into an air inlet of the booster assembly 1 and an air inlet of the gear shifting control valve in the low-temperature state, hydraulic oil is filled into an oil inlet of the booster assembly 1 at intervals, specifically, the gas in the air inlet and the air inlet of the gear shifting control valve are filled all the time, the hydraulic oil in the oil inlet is filled at intervals, after the hydraulic oil is filled into the oil inlet, a valve of a gas cavity is opened by the hydraulic oil, the gas enters the cylinder body 11, the gas in the cylinder body 11 pushes the piston 12 to move in a direction far away from the air inlet, after the oil pressure is removed, the valve of the gas cavity is closed, the gas in the cylinder body 11 can be slowly discharged from a small channel on one side, the piston 12 automatically returns through a return spring to drive the piston 12 to reciprocate; wherein, the steps a 1-a 3 are a round of endurance cycle test of the piston 12 in the first position state, and because the small channel of the cylinder body 11 for air bleeding is small, the air bleeding is slow, and the small channel can be always in an open state.
In some embodiments, in step S102, during the test, the maximum included angle between the push rod 13 and the axis of the cylinder block 11 may be controlled by using a bench to be not more than 3 ° so as to satisfy the moving range of the push rod 13 in the real vehicle.
Further, in step S102, the test temperature of the normal temperature is preferably 60 ℃ ± 3 ℃, the test temperature of the high temperature is preferably 100 ℃ ± 3 ℃, and the test temperature of the low temperature is preferably-40 ℃ ± 3 ℃, because the booster assembly 1 is installed near a heat source after being installed on a real vehicle, the normal temperature in the method is higher than 20 ℃, and the high temperature is higher than 80 ℃, so that the normal temperature, the high temperature and the low temperature of the heat insulation box can simulate the normal temperature, the high temperature and the low temperature in the real vehicle more truly, and the durability of the booster assembly 1 is accurately verified; table 1 below is the test temperature:
TABLE 1
| At normal temperature | High temperature | Low temperature | |
| Test temperature (. degree. C.) | 60±3 | 100±3 | -40±3 |
Further, in step S102, the range of the air pressure charged into the air inlet of the booster assembly 1 may be 0.8 to 1Mpa, the range of the air pressure charged into the air inlet of the shift control valve may be 0.8 to 1Mpa, in this embodiment, the air pressures of the air inlet and the air inlet of the shift control valve are preferably 0.8Mpa, and the oil pressure charged into the oil inlet of the booster assembly 1 may be 4 Mpa.
Further, in the step a1, the piston 12 can be driven to reciprocate 15-30 times per minute, and one cycle of reciprocating motion is at least 37 ten thousand times in total, compared with 22.5 ten thousand times, the test index is higher; in the step a2, the piston 12 can be driven to reciprocate 15-30 times per minute, and one round of reciprocating motion is performed for at least 12.5 ten thousand times in total, and compared with 7.5 ten thousand times, the test index is higher; in the step a3, the piston 12 can be driven to reciprocate 4-8 times per minute, and one round of reciprocating motion is carried out for at least 5000 times in total, compared with 3000 times, the test index is higher, so that the verification of the booster assembly 1 in the product design stage is severer, the design defect can be avoided in the development stage, the failure of the booster assembly 1 in the market performance can not be caused, the claim is reduced, and the public praise of manufacturers is promoted; wherein, the heat preservation time of each stage of the steps a1, a2 and a3 can be set according to needs and is generally set to 12 hours; the following table 2 shows the information of the number of times of two tests performed on the piston 12 in the first position:
TABLE 2
Further, it is possible to use the position of the piston 12 at one end of the cylinder 11 of the booster assembly 1 as an initial point, in this embodiment, the piston 12 is moved to the leftmost end of the cylinder 11, then the position of the piston 12 at the leftmost end is used as the initial point, one measurement point is taken every distance Δ s from the initial point to the right end of the cylinder 11, where Δ s is generally taken small and taken integer when the conditions allow, in this embodiment, the total stroke L of the piston 12 is taken as 85mm, Δ s is taken as 5mm, that is, one measurement point is taken every 5mm, where the initial point is the initial measurement point, and 18 measurement points are added to the initial point; in step S102, after step a1, step a2, and step a3 of each round, respectively, gas and hydraulic oil may be filled into the booster assembly 1, so that the piston 12 sequentially moves from an initial point to each measurement point, and the tightness of the booster assembly 1 is detected at each measurement point, so that the tightness of the gas pressure and the oil pressure is detected for the full stroke of the booster assembly 1 after each temperature cycle test, and the full stroke of the piston 12 in the cylinder block 11 is covered, so that the test method can be adapted to the booster assembly 1 of any working stroke, and can eliminate the limitation of single-point detection; meanwhile, when the piston 12 moves to each measuring point, the position of the piston 12 can be accurately controlled by limiting the push rod 13 by the rack, so that the piston 12 accurately moves to each measuring point.
S103: and adjusting the position of a piston 12 of the booster assembly 1 according to the state of the friction plate of the clutch in the whole vehicle after being worn, and placing the booster assembly 1 in the heat insulation box.
In some embodiments, before step S103, the temperature in the heat preservation box may be adjusted to room temperature, and the booster assembly 1 may be taken out of the heat preservation box after standing in the heat preservation box for a predetermined time.
In some embodiments, in step S103, adjusting the position of the piston 12 of the booster assembly 1 according to the state after the friction plate of the clutch in the entire vehicle is worn, and placing the booster assembly 1 in the heat preservation box may include: according to the installation position of the booster assembly 1 corresponding to the worn friction plate of the clutch in the whole vehicle, the piston 12 of the booster assembly 1 is moved to the preset position in the direction close to the push rod 13 through the push rod 13 on the rack, specifically, after the friction plate is worn, the thickness of the friction plate is reduced relative to a new plate, and the position of the corresponding push rod 13 and the position of the piston 12 move in the direction away from the oil inlet.
S104: the temperature in the thermal insulation box is controlled again according to the sequence of normal temperature, high temperature and low temperature, and the piston 12 is driven to reciprocate at each temperature.
In some embodiments, in step S104, the step of controlling the temperature inside the thermal container again according to the sequence of the normal temperature, the high temperature, and the low temperature while driving the piston 12 to reciprocate at each temperature may include the following steps:
b 1: the temperature in the heat insulation box is adjusted to be in a normal temperature state, air is filled into an air inlet of the booster assembly 1 and an air inlet of the gear shifting control valve at the normal temperature state, hydraulic oil is filled into an oil inlet of the booster assembly 1 at intervals, specifically, the air in the air inlet and the air in the gear shifting control valve is filled all the time, the hydraulic oil in the oil inlet is filled at intervals, after the hydraulic oil is filled into the oil inlet, a valve of an air cavity is opened by the hydraulic oil, the air enters the cylinder body 11, the air in the cylinder body 11 pushes the piston 12 to move in a direction far away from the air inlet, after the oil pressure is removed, the valve of the air cavity is closed, the air in the cylinder body 11 can be slowly discharged from a small channel on one side, the piston 12 automatically returns through a return spring to drive the piston 12 to reciprocate, and the.
b 2: then the temperature in the heat insulation box can be adjusted to be in a high temperature state, gas is filled into the air inlet of the booster assembly 1 and the air inlet of the gear shifting control valve in the high temperature state, hydraulic oil is filled into the oil inlet of the booster assembly 1 at intervals, specifically, the gas in the air inlet and the air inlet of the gear shifting control valve is filled all the time, the hydraulic oil in the oil inlet is filled at intervals, when the oil inlet is filled with hydraulic oil, the hydraulic oil opens the air cavity valve to make air enter the cylinder body 11, and the gas in the cylinder body 11 pushes the piston 12 to move towards the direction far away from the air inlet, when the oil pressure is removed, the air cavity valve is closed, the air in the air cylinder body 11 can be slowly released from a small channel on one side, and the piston 12 automatically returns through a return spring so as to drive the piston 12 to reciprocate, thereby realizing the endurance test in a high-temperature state.
b 3: the temperature in the heat insulation box is adjusted to be in a low-temperature state, gas is filled into an air inlet of the booster assembly 1 and an air inlet of the gear shifting control valve in the low-temperature state, hydraulic oil is filled into an oil inlet of the booster assembly 1 at intervals, specifically, the gas in the air inlet and the air inlet of the gear shifting control valve are filled all the time, the hydraulic oil in the oil inlet is filled at intervals, after the hydraulic oil is filled into the oil inlet, a valve of a gas cavity is opened by the hydraulic oil, the gas enters the cylinder body 11, the gas in the cylinder body 11 pushes the piston 12 to move in a direction far away from the air inlet, after the oil pressure is removed, the valve of the gas cavity is closed, the gas in the cylinder body 11 can be slowly discharged from a small channel on one side, the piston 12 automatically returns through a return spring to drive the piston 12 to reciprocate; wherein, the steps b 1-b 3 are a round of endurance cycle test of the piston 12 in the second position state, and because the small channel of the cylinder body 11 for air bleeding is small, the air bleeding is slow, and the small channel can be always in an open state.
In some embodiments, in step S104, during the test, the maximum included angle between the push rod 13 and the axis of the cylinder block 11 may be controlled by using a bench to be not more than 3 ° so as to satisfy the moving range of the push rod 13 in the real vehicle.
Further, in step S104, the test temperature at normal temperature is preferably 60 ℃ ± 3 ℃, the test temperature at high temperature is preferably 100 ℃ ± 3 ℃, and the test temperature at low temperature is preferably-40 ℃ ± 3 ℃; the air pressure range of the air inlet of the booster assembly 1 can be 0.8-1 Mpa, the air pressure range of the air inlet of the gear shifting control valve can be 0.8-1 Mpa, and the oil pressure of the oil inlet of the booster assembly 1 can be 4 Mpa.
Further, in step b1, the piston 12 may be driven to reciprocate 15 to 30 times per minute, and one cycle of reciprocation may be at least 37 ten thousand times; in step b2, the piston 12 can be driven to reciprocate 15-30 times per minute, and one cycle of reciprocation is at least 12.5 ten thousand times; in step b3, the piston 12 can be driven to perform 4-8 reciprocating motions per minute, and one cycle of reciprocating motions is performed for at least 5000 times.
Further, in step S103, after step b1, step b2, and step b3 of each round, respectively, gas and hydraulic oil may be filled into the booster assembly 1, so that the piston 12 sequentially moves from the initial point to each measurement point, and the tightness of the booster assembly 1 is detected at each measurement point, so as to achieve the tightness detection of the gas pressure and the oil pressure for the full stroke of the booster assembly 1 after each temperature cycle test, achieve the tightness detection of multiple measurement points of the booster assembly piston 12 at different temperatures, cover the full stroke of the piston 12 in the cylinder block 11, effectively verify the reliability of the booster assembly 1, and reduce the rate of failures on the market of the booster assembly 1.
The principle of the durability test method of the booster assembly provided by the embodiment of the invention is as follows:
since the position of the piston 12 of the booster assembly 1 is adjusted according to the state before the friction plates of the clutch are worn, and the booster assembly 1 is placed in the heat preservation box to drive the piston of the booster assembly 1 to reciprocate, so that the booster assembly 1 carries out endurance tests for a plurality of times in normal temperature, high temperature and low temperature environments in sequence, the position of the piston 12 of the booster assembly 1 is then adjusted according to the worn state of the friction plates of the clutch, the booster assembly 1 is placed in the heat preservation box to drive the piston of the booster assembly 1 to reciprocate again, so that the booster assembly 1 can perform endurance tests for multiple times in normal-temperature, high-temperature and low-temperature environments in sequence, the actual working condition environment of a vehicle can be truly simulated under the normal-temperature, high-temperature and low-temperature environments, the reliability of the booster assembly 1 is effectively verified, and the market failure rate of the booster assembly 1 is reduced; meanwhile, after the friction plate is worn, multiple endurance tests (including 100 ten thousand times) are carried out on the position of the booster assembly 1, the reliability of the booster assembly 1 after the clutch is used for a period of time can be verified, the risk that the moving range of the piston 12 is changed due to the wear of the friction plate and unknown risks occur in a new moving range is avoided, multiple endurance tests of the piston 12 in different moving ranges are realized, and whether the reliability of the endurance work of the booster assembly 1 in multiple mounting positions can meet corresponding requirements in the endurance test standard of the whole vehicle can be determined.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A durability test method of a booster assembly, comprising the steps of:
adjusting the position of a piston (12) of a booster assembly (1) according to the state of a friction plate of a clutch in the whole vehicle before abrasion, and placing the booster assembly (1) in a heat insulation box;
the temperature in the heat insulation box is sequentially controlled according to the sequence of normal temperature, high temperature and low temperature, and the piston (12) is driven to reciprocate correspondingly at each temperature;
adjusting the position of a piston (12) of the booster assembly (1) according to the state of a friction plate of a clutch in the whole vehicle after being worn, and placing the booster assembly (1) in the heat insulation box;
and controlling the temperature in the heat insulation box according to the sequence of normal temperature, high temperature and low temperature, and driving the piston (12) to reciprocate at each temperature.
2. A durability test method of a booster assembly as set forth in claim 1, wherein:
before state adjustment booster assembly (1) according to the friction disc wearing and tearing of clutch in whole car piston (12) position, and will booster assembly (1) places before the insulation can, still include: and (3) standing the booster assembly (1) for at least 3 hours at room temperature.
3. The endurance test method of a booster assembly according to claim 1, wherein the booster assembly (1) has a cylinder block (11), the position of a piston (12) of the booster assembly (1) is adjusted according to a state before a friction plate of a clutch wears in a whole vehicle, and the booster assembly (1) is placed in an incubator, comprising:
adjusting a piston (12) of the booster assembly (1) to the middle position of the cylinder body (11), and then placing the booster assembly (1) in the heat insulation box.
4. The endurance test method of a booster assembly according to claim 1, wherein the booster assembly (1) has a cylinder block (11), and the controlling of the temperature in the heat-insulating tank sequentially in the order of normal temperature, high temperature, and low temperature while driving the piston (12) to reciprocate at respective temperatures comprises:
adjusting the temperature in the heat insulation box to be in a normal temperature state, filling gas into an air inlet of the booster assembly (1) and an air inlet of the gear shifting control valve in the normal temperature state, filling hydraulic oil into an oil inlet of the booster assembly (1) at intervals, and driving the piston (12) to reciprocate;
adjusting the temperature in the heat insulation box to be in a high-temperature state, filling gas into an air inlet of the booster assembly (1) and an air inlet of a gear shifting control valve in the high-temperature state, filling hydraulic oil into an oil inlet of the booster assembly (1) at intervals, and driving the piston (12) to reciprocate;
and adjusting the temperature in the heat insulation box to be in a low-temperature state, filling gas into an air inlet of the booster assembly (1) and an air inlet of the gear shifting control valve in the low-temperature state, filling hydraulic oil into an oil inlet of the booster assembly (1) at intervals, and driving the piston (12) to reciprocate.
5. A durability test method of a booster assembly as set forth in claim 4, wherein:
the test temperature of the normal temperature is 60 +/-3 ℃, the test temperature of the high temperature is 100 +/-3 ℃, and the test temperature of the low temperature is-40 +/-3 ℃.
6. A durability test method of a booster assembly as set forth in claim 4, wherein:
the booster assembly is characterized in that the air pressure range of the air inlet of the booster assembly (1) is 0.8-1 Mpa, the air pressure range of the air inlet of the gear shifting control valve is 0.8-1 Mpa, and the oil pressure of the oil inlet of the booster assembly (1) is 4 Mpa.
7. A durability test method of a booster assembly as set forth in claim 4, wherein:
in the step a1, the piston (12) is driven to reciprocate 15-30 times per minute, and at least 37 ten thousand times in total;
in the step a2, the piston (12) is driven to reciprocate 15-30 times per minute, and at least 12.5 ten thousand times in total;
in the step a3, the piston (12) is driven to perform 4-8 reciprocating motions per minute, and the reciprocating motions are performed at least 5000 times in total.
8. A durability test method of a booster assembly as set forth in claim 1, wherein:
the position of a piston (12) of the booster assembly (1) is adjusted according to the state of a friction plate of a clutch in a whole vehicle after being abraded, the temperature in the heat insulation box is adjusted to be room temperature before the booster assembly (1) is placed in the heat insulation box, and the booster assembly (1) is taken out of the heat insulation box after standing for preset time.
9. The endurance test method of a booster assembly according to claim 1, wherein the booster assembly (1) has a push rod (13) connected to the piston (12), the position of the piston (12) of the booster assembly (1) is adjusted according to a state after a friction plate of a clutch in a whole vehicle is worn, and the booster assembly (1) is placed in the heat-insulating box, comprising:
according to the state of the friction plate of the clutch in the whole automobile after being abraded, the piston (12) of the booster assembly (1) moves to the preset position in the direction close to the push rod (13), and then the booster assembly (1) is placed in the heat insulation box again.
10. The durability test method of a booster assembly according to claim 1, further comprising, after controlling the temperature in the heat-insulating tank in the order of normal temperature, high temperature, and low temperature, while driving the piston (12) to reciprocate at the respective temperatures:
taking the position of one end of a cylinder body (11) of the booster assembly (1) moved by the piston (12) as an initial point, and taking a measuring point every interval delta s from the initial point to the other end of the cylinder body (11);
filling gas and hydraulic oil into the booster assembly (1), sequentially moving the piston (12) to each measuring point from the initial point, and carrying out sealing detection on the booster assembly (1) at each measuring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110266771.5A CN113109045B (en) | 2021-03-11 | 2021-03-11 | Durability test method for booster assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110266771.5A CN113109045B (en) | 2021-03-11 | 2021-03-11 | Durability test method for booster assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113109045A true CN113109045A (en) | 2021-07-13 |
| CN113109045B CN113109045B (en) | 2024-01-05 |
Family
ID=76711110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110266771.5A Active CN113109045B (en) | 2021-03-11 | 2021-03-11 | Durability test method for booster assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113109045B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0526775A (en) * | 1991-07-26 | 1993-02-02 | Aisin Chem Co Ltd | Clutch tester |
| US20050128655A1 (en) * | 2003-12-10 | 2005-06-16 | Qualitau, Inc. | Pulsed current generator circuit with charge booster |
| WO2010072126A1 (en) * | 2008-12-22 | 2010-07-01 | 奇瑞汽车股份有限公司 | Durability test desk for vehicle gas spring and test method thereof |
| CN202547951U (en) * | 2012-03-07 | 2012-11-21 | 上海汽车集团股份有限公司 | Endurance test platform for automotive vacuum booster |
| CN104236923A (en) * | 2014-09-29 | 2014-12-24 | 重庆工商职业学院 | Multifunctional durability test device for testing durability of automobile brake parts |
| KR20170111817A (en) * | 2016-03-29 | 2017-10-12 | 영신정공주식회사 | Electric Vacuum Pump Test Device and Electric Vacuum Pump Optimum Operation Algorithm Creation Method |
| CN109781429A (en) * | 2018-12-05 | 2019-05-21 | 合肥百川自动化科技有限公司 | A kind of automobile brake and clutch pedal performance and endurance test mechanism |
| CN111896249A (en) * | 2020-08-06 | 2020-11-06 | 中国重汽集团济南动力有限公司 | Method and system for predicting service life of clutch with displacement sensor booster |
-
2021
- 2021-03-11 CN CN202110266771.5A patent/CN113109045B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0526775A (en) * | 1991-07-26 | 1993-02-02 | Aisin Chem Co Ltd | Clutch tester |
| US20050128655A1 (en) * | 2003-12-10 | 2005-06-16 | Qualitau, Inc. | Pulsed current generator circuit with charge booster |
| WO2010072126A1 (en) * | 2008-12-22 | 2010-07-01 | 奇瑞汽车股份有限公司 | Durability test desk for vehicle gas spring and test method thereof |
| CN202547951U (en) * | 2012-03-07 | 2012-11-21 | 上海汽车集团股份有限公司 | Endurance test platform for automotive vacuum booster |
| CN104236923A (en) * | 2014-09-29 | 2014-12-24 | 重庆工商职业学院 | Multifunctional durability test device for testing durability of automobile brake parts |
| KR20170111817A (en) * | 2016-03-29 | 2017-10-12 | 영신정공주식회사 | Electric Vacuum Pump Test Device and Electric Vacuum Pump Optimum Operation Algorithm Creation Method |
| CN109781429A (en) * | 2018-12-05 | 2019-05-21 | 合肥百川自动化科技有限公司 | A kind of automobile brake and clutch pedal performance and endurance test mechanism |
| CN111896249A (en) * | 2020-08-06 | 2020-11-06 | 中国重汽集团济南动力有限公司 | Method and system for predicting service life of clutch with displacement sensor booster |
Non-Patent Citations (2)
| Title |
|---|
| 化北;马朝永;赵玉峰;: "汽车助力器总成高低温性能检测装置研究", 电子测量技术, no. 03, pages 85 - 88 * |
| 郭进兴;杨健;叶建军;张庭超;祖宇伟;: "汽车离合器助力器测试***的开发", 现代机械, no. 01 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113109045B (en) | 2024-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105673621B (en) | A kind of aviation actuator reciprocation sealing multi-state comprehensive simulation test system | |
| CN107702768B (en) | High-pressure air large-flow field calibration device and method | |
| CN104236923B (en) | Multifunctional durability test device for testing durability of automobile brake parts | |
| CN105675221A (en) | System and method for measuring low-temperature sealing specific pressure performance parameters of sealing material | |
| CN113109045A (en) | Endurance test method of booster assembly | |
| CN106769451B (en) | A kind of hot-work die heat engine fatigue experimental device | |
| CN106950043B (en) | A kind of valve oil seal and oil leak amount detecting device and detection method | |
| CN208537113U (en) | Sealing mechanism and vacuum box type helium detect test system | |
| CN215262285U (en) | Multi-module parallel connection simultaneous air tightness detection device | |
| CN114046977A (en) | Fatigue testing machine for metal corrugated pipe and operation method thereof | |
| CN211318073U (en) | Corrugated pipe wear resistance testing device | |
| CN111828513B (en) | Clutch friction plate and manufacturing method and application thereof | |
| CN108387347A (en) | Air-tightness detection device and detection method | |
| AU2019212750B2 (en) | Compressor and method for compressing a working medium | |
| CN211192749U (en) | Full-automatic assembly device for electromagnetic valve shock pad | |
| CN110985896A (en) | Multichannel pipeline intelligence leak hunting system | |
| CN111677661A (en) | Fatigue durability test system for automobile auxiliary vacuum pump | |
| CN206523296U (en) | A kind of automobile storage box folding durability test apparatus | |
| CN117030220A (en) | Durability testing device and method for lever type brake cylinder | |
| CN117571212A (en) | Sealing ring durability test system under high-pressure gas circulation condition | |
| CN219495643U (en) | Fatigue test device for clutch actuating mechanism | |
| CN219551776U (en) | Nitrogen return cylinder air tightness detection device | |
| CN210774688U (en) | Vacuum degree testing machine for high-temperature cylinder valve | |
| CN109211560B (en) | Test system suitable for fatigue life test of inner shaft part of circuit breaker | |
| CN215492902U (en) | Cable insulation thermal extension test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |