CN114619399A - Device and method for assembling lip-shaped oil seal in guide cylinder - Google Patents
Device and method for assembling lip-shaped oil seal in guide cylinder Download PDFInfo
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- CN114619399A CN114619399A CN202210183914.0A CN202210183914A CN114619399A CN 114619399 A CN114619399 A CN 114619399A CN 202210183914 A CN202210183914 A CN 202210183914A CN 114619399 A CN114619399 A CN 114619399A
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- lip
- mounting base
- guide cylinder
- oil seal
- stud
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Automatic Assembly (AREA)
Abstract
The invention provides an assembly device and an assembly method of a lip-shaped oil seal in a guide cylinder. The device includes: the device comprises a transmission device (1), a cover plate (2), a stud (4), a mounting base (5), a transparent platform (6), a sensor (7), a computer (8) and a servo motor (9); the adopted mounting base well controls the problem of easy inclination in the process of assembling the lip-shaped oil seal, and ensures the mounting stability; the lip-shaped oil seal is uniformly stressed and integrally moved in the process of installing the lip-shaped oil seal, so that the lip-shaped oil seal can be stably and accurately installed in the guide cylinder; the operation is simple, the use is convenient, the assembly accuracy can be improved, the efficiency can be improved, and the quality and the efficiency can be improved. The problem of appear the phenomenon of oil blanket slope in the assembly and inhomogeneous application of force in the assembly with the unable steady interference fit's of lip oil blanket phenomenon is solved.
Description
Technical Field
The invention belongs to the technical field of assembly of lip-shaped oil seals, and particularly relates to an assembly device and method of a lip-shaped oil seal in a guide cylinder.
Background
The lip-shaped oil seal is a dynamic precise rubber sealing element, is widely applied to the fields of aerospace, automobiles, ships and the like, and mainly utilizes the radial force formed by the holding force generated by the interference fit of a rubber lip and a rotating shaft and the clamping force of a spring to play a role in plugging a sealed fluid, so that an oil cavity is isolated from the outside, and oil is sealed and is prevented from dust.
At present, the lip-shaped oil seal is assembled in the guide cylinder by an assembling clamp, the oil seal is obliquely and forcibly extruded, the level of the oil seal is difficult to ensure, and the pressure is uniformly applied in a cavity, so that the matching part of the oil seal is extruded to be damaged and clamped, and the final leakage is caused.
Disclosure of Invention
The invention provides an assembly device and an assembly method of a lip-shaped oil seal in a guide cylinder, which solve the problem that the existing lip-shaped oil seal is likely to cause leakage due to the fact that a matching part is extruded and damaged and clamped.
The invention provides an assembly device of a lip-shaped oil seal in a guide cylinder, which comprises: the device comprises a transmission device 1, a cover plate 2, a stud 4, a mounting base 5, a transparent platform 6, a sensor 7, a computer 8 and a servo motor 9; wherein the content of the first and second substances,
the mounting base 5 is barrel-shaped, the inner diameter and the outer diameter of the mounting base are consistent with the size of the lip-shaped oil seal, and the lip-shaped oil seal is placed on the upper end face of the mounting base 5; the stud 4 is vertically fixed at the center of the bottom of the mounting base 5, and the length of the stud 4 is greater than the radial height of the guide cylinder; the guide cylinder is sleeved outside the mounting base 5;
the cover plate 2 is annular, is sleeved on the stud 4 and is positioned on the upper end face of the guide cylinder, and the diameter of the cover plate 2 is larger than that of the guide cylinder; one surface of the cover plate 2 facing the guide cylinder is provided with a rubber protection pad;
the transmission device 1 comprises an external device and an internal device which are sleeved together, the internal device is used for clamping the top of the stud 4, the lip-shaped oil seal is driven to move in the guide cylinder through the stud 4 and the mounting base 5, and the external device can move in a telescopic mode and is used for pressing the guide cylinder on the transparent platform 6;
the computer 8 is respectively connected with the sensor 7 and the servo motor 9, and the servo motor 9 is used for providing power for the transmission device 1;
the computer 8 is used for adjusting the internal device when the inclination of the installation base 5 is determined according to the collected data of the sensor 7.
Optionally, the assembling apparatus further comprises: a pressing plate 3;
the guide cylinder sleeve is arranged on the outer side of the installation base 5, and the pressing plate 3 can be arranged on the stud 4 in a sleeved mode and used for pressing the lip-shaped oil seal to be tightly attached to the installation base 5.
Optionally, the pressing plate 3 is shaped like an inverted barrel, a through hole is formed in the bottom of the barrel and used for penetrating through the stud 4, and the inner diameter and the outer diameter of the pressing plate 3 are consistent with those of the lip-shaped oil seal.
Optionally, the sensors 7 are disposed below the transparent platform, the number of the sensors 7 is at least 3, and the computer 8 is specifically configured to receive distances between the sensors 7 and the installation base 5, calculate a range according to each distance value, and determine that the installation base 5 is inclined if the range exceeds a set value of 0.05 mm.
Optionally, the depth of the cavity in the center of the mounting base 5 is greater than the height of the lip seal.
A second aspect of the present invention provides a method of assembling a lip seal in a guide sleeve, using the assembly device according to any one of the first aspect, the method including:
step 1: the lip-shaped oil seal is manually and tightly installed on the end surface of the inner concave side of the installation base 5 placed on the transparent platform 6;
step 2: lubricating grease is coated on the outer edge of the lip-shaped oil seal, and the guide cylinder is sleeved on the outer side of the mounting base 5 from the top of the stud 4 downwards; one side with rubber protection in the cover plate 2 faces downwards, a central hole of the cover plate 2 stably penetrates through the stud 4 to be placed above the guide cylinder and cover the upper end face of the guide cylinder, and the mounting base 5 is horizontally placed on the transparent platform 6;
and step 3: starting a servo motor 9, controlling an external device in a transmission device 1 to firstly prop against a cover plate 2 through a computer 8 to fix a guide cylinder on a transparent platform 6, clamping a stud 4 through telescopic change by the internal device, moving the external device and the internal device in the same frequency, the same speed and different directions, ensuring the relative rest of the guide cylinder and the platform by the external device, and pulling a mounting base 5 to ascend by the internal device; the sensor 7 scans the installation base 5, measures the distance from the bottom surface of the installation base 5 and transmits the distance to the computer 8;
and 4, step 4: the computer 8 calculates the range difference by calculating the distance value transmitted by the sensor 7, if the distance value exceeds a set value by 0.05mm, the mounting base 5 is considered to be inclined, the distance value is transmitted to the transmission system 1 through the computer 8 to adjust the internal device, so that the inclined position of the mounting base 5 is adjusted, after the mounting base 5 is stable, the computer 8 calculates the range difference again, and if the distance value is less than 0.05mm, the transmission device 1 continues to pull the mounting base upwards; when the distance identified by the sensor 7 reaches the set distance of 190mm, the lip-shaped oil seal is considered to be installed in the guide cylinder in place, the transmission system 1 stops pulling the stud 4 upwards, and at the moment, the installation of the lip-shaped oil seal is finished.
Optionally, after step 4, the method further includes:
and 5: the computer 8 controls the internal device of the transmission system 1 to slowly apply force downwards to the stud 4, the external device synchronously contracts at the same time, the lip-shaped oil seal which is assembled in the guide cylinder in an interference manner is separated from the mounting base 5, and the mounting base 5 is stably dropped onto the transparent platform 6 along the set parallelism of the bottom surface of the mounting base;
step 6: and taking down the guide cylinder with the lip-shaped oil seal installed, and taking out the installation base.
Optionally, the assembling apparatus further includes: a pressing plate 3; prior to step 2, the method further comprises:
and 11, sleeving the pressing plate 3 into the stud 4, pressing the pressing plate 3 along the periphery with force to enable the lip-shaped oil seal arranged on the installation base 5 to be tightly attached to the installation base 5 without tilting, and removing the pressing plate 3.
The embodiment of the invention provides an assembly device and method of a lip-shaped oil seal in a guide cylinder, wherein the adopted mounting base well controls the problem of easy inclination in the assembly process of the lip-shaped oil seal, and ensures the mounting stability; the lip-shaped oil seal is uniformly stressed and integrally moved in the process of installing the lip-shaped oil seal, so that the lip-shaped oil seal can be stably and accurately installed in the guide cylinder; the operation is simple, the use is convenient, the assembly accuracy can be improved, the efficiency can be improved, and the quality and the efficiency can be improved. The problem of appear the phenomenon of oil blanket slope in the assembly and inhomogeneous application of force in the assembly with the unable steady interference fit's of lip oil blanket phenomenon is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a lip seal assembly of the guide sleeve of the present invention;
FIG. 2 is a schematic view of the guide sleeve of the present invention assembled with a lip seal;
description of reference numerals:
1-a transmission device; 2-cover plate; 3, pressing a plate;
4-a stud; 5, mounting a base; 6-a transparent platform;
7-a sensor; 8-a computer; 9-servo motor.
Detailed Description
The following explains the assembling device and method of lip oil seal in guide cylinder provided by the invention with reference to the attached drawings.
As shown in fig. 1, the present invention provides an assembly device of a lip seal in a guide cylinder, comprising: a fixed system, a control system and a transmission system; the fixing system includes: installation base 5, double-screw bolt 4, clamp plate 3, apron 2 and transparent platform 6, control system includes: a sensor 7 and a computer 8; the transmission system includes: a servo motor 9 and a transmission 1.
The installation base 5 is the tubbiness of one end open-ended, and the diameter is along with the size customization of lip oil blanket, and the lip oil blanket is placed on the terminal surface of installation base 5. The depth of a cavity in the center of the mounting base 5 is greater than the height of the lip-shaped oil seal;
the stud 4 is arranged in the center of the cavity of the mounting base 5, and the bottom of the stud 4 and the mounting base 5 are rigidly fixed and vertical to the plane of the mounting base 5; the length of the stud 4 is greater than the radial height of the guide cylinder;
the pressing plate 3 is in a barrel shape with an opening at one end, a through hole is formed in the bottom of the barrel, the diameter of the pressing plate 3 is consistent with the appearance size of the lip-shaped oil seal, and the pressing plate 3 is inversely sleeved on the stud 4 and used for pressing the lip-shaped oil seal on the mounting base 5;
the cover plate 2 is in a wafer shape, the center of the cover plate is provided with a center hole, the cover plate is sleeved on the stud 4, and the diameter of the cover plate 2 is larger than that of the guide cylinder.
Furthermore, a rubber protection pad is arranged on one surface of the cover plate 2 facing the installation base 5 so as to prevent the cover plate 2 from crushing the guide cylinder;
further, a servo motor 9 powers the transmission 1. The transmission device 1 comprises an external device and an internal device, wherein the internal device is a clamping end and is used for clamping the top of the stud 4, and the external device can move in a telescopic mode. The internal device moves as the transmission 1 moves as a whole. The external device is individually retractable.
Furthermore, the number of the sensors 7 is at least 3, the sensors are fixed on a plane, and the distance between the sensors and the bottom surface of the installation base 5 is acquired through the transparent platform 6 and is used for detecting the parallelism of the bottom surface of the installation base 5;
further, the computer 8 receives data collected by the sensor 7, generates a control command according to the data collected by the sensor 7, and transmits the control command to the transmission device 1, so as to control the installation base 5.
In combination with the assembling device for the lip-shaped oil seal in the guide cylinder shown in fig. 1, the invention also provides an assembling method for the lip-shaped oil seal in the guide cylinder, which comprises the following steps:
step 1: the lip-shaped oil seal is manually and tightly installed on the end surface of the inner concave side of the installation base 5 placed on the transparent platform 6;
step 2: the pressing plate 3 is sleeved into the stud 4, the pressing plate 3 is pressed along the periphery with force, so that the lip-shaped oil seal arranged on the installation base 5 is tightly attached to the installation base 5 without tilting, and the pressing plate 3 is removed.
And step 3: lubricating grease is coated on the outer edge of the lip-shaped oil seal, and the guide cylinder is sleeved on the outer side of the mounting base 5 from the top of the stud 4 downwards; the side with rubber protection in the cover plate 2 faces downwards, the central hole stably penetrates through the stud 4 to be placed above the guide cylinder to cover the top end of the guide cylinder, the guide cylinder is prevented from being damaged when the cover plate 2 is stressed, and the bottom surface of the installation base 5 on which the guide cylinder is installed is horizontally placed on the transparent platform 6.
And 4, step 4: the servo motor 9 is started, the computer 8 controls the external device in the transmission device 1 to firstly prop against the cover plate 2 to fix the guide cylinder on the transparent platform 6, the internal device clamps the stud 4 through telescopic change, the external device and the internal device move in the same frequency, the same speed and different directions, the external device ensures the relative rest of the guide cylinder and the platform, and the internal device pulls the installation base 5 to ascend. The sensor 7 scans the installation base 5, measures the distance from the bottom surface of the installation base 5 and transmits the distance to the computer 8;
and 5: the computer 8 calculates the range H by calculating the distance value transmitted by the sensor 7max-HminIf the value exceeds the set value by 0.05mm, the installation base 5 is considered to be inclined, the inclined position of the installation base 5 is adjusted by transmitting the inclined position to the transmission system 1 through the computer 8 to adjust the internal device, after the installation base 5 is stable, the computer 8 calculates the range again, and if the value is less than 0.05mm, the transmission device 1 continues to pull the installation base upwards. When the distance identified by the sensor 7 reaches the set distance of 190mm, the lip-shaped oil seal is considered to be installed in the guide cylinder in place, the transmission system 1 stops pulling the stud 4 upwards, and at the moment, the installation of the lip-shaped oil seal is finished.
Step 6: the computer 8 controls the internal device of the transmission system 1 to slowly apply force downwards to the stud 4, the external device synchronously contracts at the same time, the lip-shaped oil seal which is assembled in the guide cylinder in an interference manner is separated from the mounting base 5, and the mounting base 5 is stably dropped onto the transparent platform 6 along the set parallelism of the bottom surface of the mounting base;
and 7: and taking down the guide cylinder with the lip-shaped oil seal installed, and taking out the installation base.
The device and the method are suitable for all structures needing to install the lip-like oil seal in the guide cylinder.
Furthermore, in the step 3, the outer surface of the lip-shaped oil seal is uniformly coated with lubricating grease, so that the lubricating grease with the inner wall of the guide cylinder in the assembling process of the lip-shaped oil seal is ensured;
further, the transparent platform in the step 3 is a horizontal platform which is completely parallel to the plane where the sensor is located, so that the parallelism of the mounting base and the perpendicularity of the stud are guaranteed;
furthermore, when the guide cylinder is contacted with the lip-shaped oil seal arranged on the mounting base in the step 3, the guide cylinder is vertically arranged opposite to the mounting base, so that the lip-shaped oil seal is ensured not to move;
further, in step 5, the moving speeds of the external device and the internal device are the same, so that the guide cylinder and the platform are ensured to be tightly attached and relatively static;
further, in step 5, the distance between the plane where the sensor is located and the transparent platform plane is adjusted to be parallel;
furthermore, in step 5, the transmission system adjusts the force application size, slowly adjusts the installation base within a set value, and then pulls the installation base upwards.
Claims (8)
1. An assembly device for a lip seal in a guide sleeve, comprising: the device comprises a transmission device (1), a cover plate (2), a stud (4), a mounting base (5), a transparent platform (6), a sensor (7), a computer (8) and a servo motor (9); wherein the content of the first and second substances,
the mounting base (5) is barrel-shaped, the inner diameter and the outer diameter of the mounting base are consistent with the size of the lip-shaped oil seal, and the lip-shaped oil seal is placed on the upper end face of the mounting base (5); the stud (4) is vertically fixed at the center of the bottom of the mounting base (5), and the length of the stud (4) is greater than the radial height of the guide cylinder; the guide cylinder is sleeved on the outer side of the mounting base (5);
the cover plate (2) is annular, is sleeved on the stud (4) and is positioned on the upper end surface of the guide cylinder, and the diameter of the cover plate (2) is larger than that of the guide cylinder; one surface of the cover plate (2) facing the guide cylinder is provided with a rubber protection pad;
the transmission device (1) comprises an external device and an internal device which are sleeved together, the internal device is used for clamping the top of the stud (4), the lip-shaped oil seal is driven to move in the guide cylinder through the stud (4) and the mounting base (5), and the external device can move in a telescopic mode and is used for pressing the guide cylinder on the transparent platform (6);
the computer (8) is respectively connected with the sensor (7) and the servo motor (9), and the servo motor (9) is used for providing power for the transmission device (1);
the computer (8) is used for adjusting the internal device when the inclination of the mounting base (5) is determined according to the collected data of the sensor (7).
2. The fitting apparatus according to claim 1, further comprising: a pressing plate (3);
the guide cylinder sleeve is arranged on the outer side of the installation base (5), and the pressing plate (3) can be arranged on the stud (4) in a sleeved mode and used for pressing the lip-shaped oil seal to be tightly attached to the installation base (5).
3. The mounting arrangement, as set forth in claim 2, characterized in that the pressure plate (3) has the shape of an inverted bucket, the bottom of which is provided with a through hole for passing the stud (4), the inner and outer diameter dimensions of the pressure plate (3) being in accordance with the dimensions of the lip seal.
4. The mounting arrangement, as set forth in claim 1, characterized in that the sensors (7) are arranged below the transparent platform, the number of sensors (7) being at least 3, the computer (8) being configured, in particular, to receive the distances from the mounting base (5) collected by each sensor (7) and to calculate, from the respective distance values, the range, and to consider the mounting base (5) as tilted if the range exceeds a set value of 0.05 mm.
5. The mounting arrangement, as set forth in claim 1, characterized in that the depth of the cavity in the center of the mounting base (5) is greater than the height of the lip seal.
6. A method of assembling a lip seal in a guide cylinder, using the assembling apparatus according to any one of claims 1 to 5, the method comprising:
step 1: the lip-shaped oil seal is manually and tightly installed on the end surface of the inner concave side of an installation base (5) placed on a transparent platform (6);
step 2: lubricating grease is coated on the outer edge of the lip-shaped oil seal, and the guide cylinder is sleeved on the outer side of the mounting base (5) from the top of the stud (4) downwards; one side with rubber protection in the cover plate (2) faces downwards, a central hole of the cover plate (2) stably penetrates through the stud (4) to be placed above the guide cylinder and cover the upper end face of the guide cylinder, and the mounting base (5) is horizontally placed on the transparent platform (6);
and step 3: starting a servo motor (9), controlling an external device in a transmission device (1) to firstly prop against a cover plate (2) through a computer (8) to fix a guide cylinder on a transparent platform (6), clamping a stud (4) through telescopic change by an internal device, moving the external device and the internal device in the same frequency, the same speed and different directions, ensuring the relative rest of the guide cylinder and the platform by the external device, and pulling a mounting base (5) to ascend by the internal device; the sensor (7) scans the mounting base (5), measures the distance from the bottom surface of the mounting base (5) and transmits the distance to the computer (8);
and 4, step 4: the computer (8) calculates the range difference by calculating the distance value transmitted by the sensor (7), if the distance value exceeds a set value by 0.05mm, the mounting base (5) is considered to be inclined, the distance value is transmitted to the transmission system 1 through the computer (8) to adjust the internal device, so that the inclined position of the mounting base (5) is adjusted, after the mounting base (5) is stable, the computer (8) calculates the range difference again, and if the distance value is less than 0.05mm, the transmission device (1) continues to pull the mounting base upwards; when the distance identified by the sensor (7) reaches the set distance of 190mm, the lip-shaped oil seal is considered to be installed in the guide cylinder in place, the transmission system 1 stops pulling the stud (4) upwards, and at the moment, the installation of the lip-shaped oil seal is finished.
7. The method of claim 6, wherein after step 4, the method further comprises:
and 5: the computer (8) controls the internal device of the transmission system 1 to slowly apply force to the stud (4) downwards, the external device synchronously contracts at the same time, the lip-shaped oil seal which is assembled in the guide cylinder in an interference fit manner is separated from the mounting base (5), and the mounting base (5) is still stably dropped onto the transparent platform (6) along the set parallelism of the bottom surface of the mounting base;
step 6: and taking down the guide cylinder with the lip-shaped oil seal installed, and taking out the installation base.
8. The method of claim 6, wherein the fitting apparatus further comprises: a pressing plate (3); prior to step 2, the method further comprises:
and 11, sleeving the pressing plate (3) into the stud (4), forcibly pressing the pressing plate (3) along the periphery to enable the lip-shaped oil seal installed on the installation base (5) to be tightly attached to the installation base (5) without tilting, and removing the pressing plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210183914.0A CN114619399B (en) | 2022-02-25 | 2022-02-25 | Assembling device and method for lip-shaped oil seal in guide cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210183914.0A CN114619399B (en) | 2022-02-25 | 2022-02-25 | Assembling device and method for lip-shaped oil seal in guide cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114619399A true CN114619399A (en) | 2022-06-14 |
| CN114619399B CN114619399B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210183914.0A Active CN114619399B (en) | 2022-02-25 | 2022-02-25 | Assembling device and method for lip-shaped oil seal in guide cylinder |
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| CN (1) | CN114619399B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002195389A (en) * | 2000-12-27 | 2002-07-10 | Hitachi Constr Mach Co Ltd | Speed reducer |
| US20030024100A1 (en) * | 2000-11-06 | 2003-02-06 | Campbell Frederick A. | Spin pull module for threaded inserts |
| CN102407512A (en) * | 2010-09-20 | 2012-04-11 | 上海航盛实业有限公司 | Installation tool for automobile tire pressure sensor assembly |
| CN104552138A (en) * | 2013-10-29 | 2015-04-29 | 陕西重型汽车有限公司 | Vehicle fuel pipe assembly tool |
| CN110722502A (en) * | 2019-11-27 | 2020-01-24 | 中国航发沈阳黎明航空发动机有限责任公司 | Assembly jig for installing radial lip-shaped sealing ring without impact |
-
2022
- 2022-02-25 CN CN202210183914.0A patent/CN114619399B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030024100A1 (en) * | 2000-11-06 | 2003-02-06 | Campbell Frederick A. | Spin pull module for threaded inserts |
| JP2002195389A (en) * | 2000-12-27 | 2002-07-10 | Hitachi Constr Mach Co Ltd | Speed reducer |
| CN102407512A (en) * | 2010-09-20 | 2012-04-11 | 上海航盛实业有限公司 | Installation tool for automobile tire pressure sensor assembly |
| CN104552138A (en) * | 2013-10-29 | 2015-04-29 | 陕西重型汽车有限公司 | Vehicle fuel pipe assembly tool |
| CN110722502A (en) * | 2019-11-27 | 2020-01-24 | 中国航发沈阳黎明航空发动机有限责任公司 | Assembly jig for installing radial lip-shaped sealing ring without impact |
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| CN114619399B (en) | 2023-05-12 |
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