CN108213925B - Lifting lug mounting method - Google Patents
Lifting lug mounting method Download PDFInfo
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- CN108213925B CN108213925B CN201611140975.XA CN201611140975A CN108213925B CN 108213925 B CN108213925 B CN 108213925B CN 201611140975 A CN201611140975 A CN 201611140975A CN 108213925 B CN108213925 B CN 108213925B
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- lifting lug
- positioning
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- lug
- lifting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention relates to a lifting lug installation method, which comprises the following specific steps of 1, determining the technical requirements of lifting lug installation; 2. determining a positioning mode and a positioning reference when the lifting lug is installed; 3. designing an assembly fixture required by mounting the lifting lug; 4. determining a process of installing the shackle using the assembly jig, and the like. The outer surface of the transmitter skin is positioned by utilizing the V-shaped block (3) through the conversion of the positioning reference; positioning by using a positioning pin (2) and an electric appliance interface of the emitter; the distance between the lifting lugs is ensured by using a positioning bush (6); the mounting height of the lifting lug, namely the distance between the elastic bearing surface of the lifting lug and the reference axis of the emitter is ensured by using a height block gauge (5); and the installation angle of the lifting lug is ensured by using the angle square component (4), namely the side surface of the lifting lug is vertical to the reference axis of the emitter. Through the installation process, the requirement that the installation of the lifting lug meets the technical requirement is ensured. The invention has simple structure and high installation precision. The installation of this type lug has been solved fine.
Description
Technical Field
The invention belongs to the technical field of machine manufacturing, and particularly relates to installation of lifting lugs.
Background
A lifting lug is a lifting point structure mounted on equipment or other lifting objects for lifting. And a certain emitter is suspended below the upper-stage suspension system through the front lifting lug and the rear lifting lug. This lug not only needs to have sufficient intensity in order to satisfy the impact force that the transmitter during operation produced, position accuracy when still needing to guarantee the transmitter and hang: 1. the gap between the emitter and the upper-stage suspension system is required to be within a certain range; 2. The course precision and the pitching precision of the transmitter are ensured. The position requirement between the launcher and the upper-level suspension system is realized through the position requirement conversion between the launcher and the lifting lug. Therefore, the distance between the elastic surface of the lug bearing and the reference axis of the transmitter needs to be ensured; the side surface of the lifting lug is vertical to the reference axis of the emitter; the distance between the front and rear lifting lugs. The difficulty when the lifting lug is installed is as follows: the lifting lug is connected with the emitter through threads, so that the quick and accurate adjustment cannot be realized, and the related technical requirements are difficult to guarantee; the reference axis of the emitter cannot be directly used as a mounting and positioning reference of the lifting lug.
Disclosure of Invention
In order to solve the technical problem, the invention provides a lifting lug mounting method.
The method comprises the following steps;
1. the technical requirements of mounting the lifting lug are determined;
because the emitter is suspended under the upper-level suspension system through the lifting lug, the functional requirement after the emitter is suspended is realized through the lifting lug, and the requirement and the key of the mounting position of the lifting lug on the emitter are met. The pitching precision and the course precision of the emitter are required to be ensured after the emitter is suspended; these functional requirements can be translated into a positional relationship between the lifting lug and the emitter. The lug is installed at the transmitter upper surface, and the technical requirement that can make clear of the lug installation according to the position relation between lug and the transmitter has:
1) the pitching precision of the emitter after the lifting lug is installed, namely the distance between the elastic surface of the lifting lug bearing and the reference axis of the emitter is ensured;
2) ensuring the course precision of the emitter after the lifting lug is installed; namely, two side surfaces of the lifting lug are vertical to the reference axis of the emitter.
3) The distance between the front and rear lifting lugs is ensured.
2. Determining a positioning mode and a positioning reference during installation of a lifting lug
When the lifting lug is installed, the emitter needs to be accurately positioned and fixed, and then the lifting lug is installed. According to the technical requirements, the lifting lug is installed in an inverted mode, namely the lifting lug faces downwards during installation. The positioning method and the reference of the emitter are as follows: because the reference axis of the emitter cannot be directly used for positioning, the Y-direction and Z-direction positioning references of the emitter are determined to be the axis of the outer circle skin through reference conversion, and the X-direction positioning reference is the electric device interface hole on the emitter; therefore, the transmitter is positioned by the outer skin of the transmitter and the electric appliance interface hole on the transmitter. The positioning method and the reference of the lifting lug are as follows: the Y-direction benchmark during installation of the lifting lug is a lifting lug elastic bearing surface, the positioning benchmark in the X direction is two side surfaces of the lifting lug, the lifting lug is positioned in the Y direction and the X direction by utilizing an angle square and a height block gauge, and the distance between the front lifting lug and the rear lifting lug is controlled by utilizing a bush.
3. Assembling clamp required in design of installation of lifting lug
The required assembly jig of lug installation includes base 1, locating pin 2, V type piece 3, angle square subassembly 4, high block gage 5, location bush 6, rubber tie plate 7. The positioning pin 2 is fixed on the base 1, the V-shaped blocks 3 are fixed on the base 1 through screws, the front and rear V-shaped blocks need to be equal in height, rubber base plates 7 are pasted on the V-shaped blocks, and the positioning pin further comprises an independent angle square component 4, a height block gauge 5 and a positioning bush 6. Wherein, a positioning hole and a connecting hole for installing the angle square component 4 are designed on the base; the positioning bush 6 is formed by combining a left half part and a right half part,
the positioning pin 2 is used for positioning an electrical appliance interface of the transmitter; the V-shaped block 3 and the rubber base plate 7 are used for positioning the outer surface of the transmitter skin; the angle square component 4 is used for positioning two side surfaces of the lifting lug; the positioning bush 6 is used for ensuring the distance between the lifting lugs and the front lifting lug and the rear lifting lug to be positioned on the central axis of the launcher; the height block gauge 5 is used for ensuring the distance between the lifting lug and the reference axis of the emitter;
4. process for determining mounting of lifting lug by using assembly jig
(1) The front lifting lug and the rear lifting lug are preliminarily arranged on the emitter, and at the moment, the lifting lugs are only screwed into the mounting screw holes, so that the technical requirements are not met;
(2) turning the emitter 180 degrees to enable the lifting lug to face downwards, and placing the emitter on the V-shaped block 3 for positioning Y and Z directions of the emitter; the positioning pin 2 is inserted into an electric appliance interface hole on the emitter and used for positioning the X direction of the emitter to ensure that the emitter cannot move back and forth;
(3) calibrating the distance between the front lifting lug and the rear lifting lug by using the positioning bush 6, and removing the positioning bush 6 after calibration;
(4) fixing the angle square component 4 on the base 1 through screws, and adjusting the lifting lug to enable the side face of the lifting lug to be attached to the positioning face on the angle square component;
(5) the height block gauge 5 is used, so that the through end of the height block gauge 5 can pass through the lug spring-bearing surface, and the no-go end of the height block gauge 5 cannot pass through the lug spring-bearing surface;
(6) if the lifting lug cannot pass the detection of the height block gauge 5, repeating the steps (4) and (5) until the lifting lug meets the requirements of the steps (4) and (5);
the outer surface of the transmitter skin is positioned by utilizing the V-shaped block 3 and the rubber base plate 7 through the conversion of the positioning reference; positioning the electric appliance interface of the emitter by using the positioning pin 2, and ensuring the distance between the front lifting lug and the rear lifting lug by using the positioning bush 6; the height block gauge 5 is used for ensuring the mounting height of the lifting lug, namely the distance between the elastic bearing surface of the lifting lug and the reference axis of the emitter; and the angle square component 4 is utilized to ensure the installation angle of the lifting lug, namely the side surface of the lifting lug is vertical to the reference axis of the emitter. The invention has simple structure and high installation precision, and meets all technical requirements of lifting lug installation. The installation of this type lug has been solved fine.
Drawings
Figure 1 is a view of a mounting position of a lifting lug,
fig. 2 is a view of the construction of the assembly jig, including: 1. a base; 2. positioning pins; 3. a V-shaped block; 4. an angle square assembly; 5. a height block gauge; 6. positioning the bushing; 7. a rubber cushion plate is arranged on the upper surface of the base plate,
figure 3 is a diagram of positioning transmitter and correction lug distance,
figure 4 is a view of the installation step 4,
fig. 5 is a mounting step 5 diagram.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
a mounting method of a lifting lug is specifically implemented as follows:
1. the technical requirements of mounting the lifting lug are determined;
because the emitter is suspended under the upper-level suspension system through the lifting lug, the functional requirement after the emitter is suspended is realized through the lifting lug, and the requirement and the key of the mounting position of the lifting lug on the emitter are met. The pitching precision and the course precision of the emitter are required to be ensured after the emitter is suspended; these functional requirements can be translated into a positional relationship between the lifting lug and the emitter. The lug is installed at the transmitter upper surface, and the technical requirement that can make clear of the lug installation according to the position relation between lug and the transmitter has:
(1) the pitching precision of the emitter after the lifting lug is installed, namely the distance between the elastic surface of the lifting lug bearing and the reference axis of the emitter is ensured;
(2) ensuring the course precision of the emitter after the lifting lug is installed; namely, two side surfaces of the lifting lug are vertical to the reference axis of the emitter.
(3) The distance between the front and rear lifting lugs is ensured.
2. Determining a positioning mode and a positioning reference during installation of a lifting lug
When the lifting lug is installed, the emitter needs to be accurately positioned and fixed, and then the lifting lug is installed. According to the technical requirements, the lifting lug is installed in an inverted mode, namely the lifting lug faces downwards during installation. The positioning method and the reference of the emitter are as follows: because the reference axis of the emitter cannot be directly used for positioning, the Y-direction and Z-direction positioning references of the emitter are determined to be the axis of the outer circle skin through reference conversion, and the X-direction positioning reference is the electric device interface hole on the emitter; therefore, the transmitter is positioned by the outer skin of the transmitter and the electric appliance interface hole on the transmitter. The positioning method and the reference of the lifting lug are as follows: the Y-direction benchmark during installation of the lifting lug is a lifting lug elastic bearing surface, the positioning benchmark in the X direction is two side surfaces of the lifting lug, the lifting lug is positioned in the Y direction and the X direction by utilizing an angle square and a height block gauge, and the distance between the front lifting lug and the rear lifting lug is controlled by utilizing a bush.
3. Assembling clamp required in design of installation of lifting lug
The required assembly jig of lug installation includes base 1, locating pin 2, V type piece 3, angle square subassembly 4, high block gage 5, location bush 6, rubber tie plate 7. The positioning pin 2 is fixed on the base 1, the V-shaped blocks 3 are fixed on the base 1 through screws, the front and rear V-shaped blocks need to be equal in height, rubber base plates 7 are pasted on the V-shaped blocks, and the positioning pin further comprises an independent angle square component 4, a height block gauge 5 and a positioning bush 6. Wherein, a positioning hole and a connecting hole for installing the angle square component 4 are designed on the base; the positioning bush 6 is formed by combining a left half part and a right half part,
the positioning pin 2 is used for positioning an electrical appliance interface of the transmitter; the V-shaped block 3 and the rubber base plate 7 are used for positioning the outer surface of the transmitter skin; the angle square component 4 is used for positioning two side surfaces of the lifting lug; the positioning bush 6 is used for ensuring the distance between the lifting lugs and the front lifting lug and the rear lifting lug to be positioned on the central axis of the launcher; the height block gauge 5 is used for ensuring the distance between the lifting lug and the reference axis of the emitter;
4. process for determining mounting of lifting lug by using assembly jig
(1) The front lifting lug and the rear lifting lug are preliminarily arranged on the emitter, and at the moment, the lifting lugs are only screwed into the mounting screw holes, so that the technical requirements are not met;
(2) turning the emitter 180 degrees to enable the lifting lug to face downwards, and placing the emitter on the V-shaped block 2 for positioning Y and Z directions of the emitter; the positioning pin 2 is inserted into an electric appliance interface hole on the emitter and used for positioning the X direction of the emitter to ensure that the emitter cannot move back and forth;
(3) calibrating the distance between the front lifting lug and the rear lifting lug by using the positioning bush 6, and removing the positioning bush 6 after calibration;
(4) fixing the angle square component 4 on the base 1 through screws, and adjusting the lifting lug to enable the side face of the lifting lug to be attached to the positioning face on the angle square component;
(5) the height block gauge 5 is used, the lifting lug is adjusted to ensure that the through end of the height block gauge 5 can pass through the elastic bearing surface of the lifting lug, the dead end of the height block gauge 5 can not pass through the elastic bearing surface of the lifting lug,
(6) if the lifting lug cannot pass the detection of the height block gauge 5, repeating the steps (4) and (5) until the lifting lug meets the requirements of the steps (4) and (5); the distance between the side surface of the lifting lug and the reference axis of the emitter and the distance between the elastic bearing surface of the lifting lug and the reference axis of the emitter can be ensured, and then the course precision and the pitching precision of the emitter are ensured;
the scope of the invention is limited only to the technical solutions disclosed in the detailed description.
Claims (1)
1. A lifting lug mounting method is characterized in that: the method comprises the following steps; 1) the technical requirements for mounting the lifting lugs are defined; the pitching precision of the emitter after the lifting lug is installed, namely the distance between the elastic surface of the lifting lug bearing and the reference axis of the emitter is ensured;
ensuring the course precision of the emitter after the lifting lug is installed; namely, two side surfaces of the lifting lug are vertical to the reference axis of the emitter; the lifting lug distance between the front lifting lug and the rear lifting lug is ensured; 2) the positioning mode and the positioning reference when the lifting lug is determined to be installed are as follows: when the lifting lugs are installed, the emitter needs to be accurately positioned and fixed, and then the lifting lugs are installed; according to the technical requirements, the lifting lugs are installed in an inverted mode, namely the lifting lugs face downwards during installation; the positioning method and the reference of the emitter are as follows: because the reference axis of the emitter cannot be directly used for positioning, the Y-direction and Z-direction positioning references of the emitter are determined to be the axis of the outer circle skin through reference conversion, and the X-direction positioning reference is the electric device interface hole on the emitter; therefore, the outer skin of the emitter and the electric appliance interface hole on the emitter are used for positioning the emitter; the positioning method and the reference of the lifting lug are as follows: the Y-direction reference during installation of the lifting lug is a lifting lug elastic bearing surface, the X-direction positioning reference is two side surfaces of the lifting lug, the lifting lug is positioned in the Y direction and the X direction by utilizing an angle square and a height block gauge, and the distance between the front lifting lug and the rear lifting lug is controlled by utilizing a bushing; 3) required assembly jig when designing the lug installation: the assembling clamp required by the installation of the lifting lug comprises a base (1), a positioning pin (2), a V-shaped block (3), an angle square component (4), a height block gauge (5), a positioning bushing (6) and a rubber base plate (7); the positioning pin (2) is fixed on the base (1), the V-shaped block (3) is fixed on the base (1) through a screw, the front and rear V-shaped blocks need to be equal in height, a rubber cushion plate (7) is pasted on the V-shaped block, and the positioning pin further comprises an independent angle square component (4), a height block gauge (5) and a positioning bushing (6); wherein, a positioning hole and a connecting hole for installing the angle square component (4) are designed on the base; the positioning bush (6) is formed by combining a left half part and a right half part; the positioning pin (2) is used for positioning the electric appliance interface of the transmitter; the V-shaped block (3) and the rubber base plate (7) are used for positioning the outer surface of the transmitter skin; the angle square component (4) is used for positioning two side surfaces of the lifting lug; the positioning bush (6) is used for ensuring the distance between the lifting lugs and the front lifting lug and the rear lifting lug to be positioned on the central axis of the launcher; the height block gauge (5) is used for ensuring the distance between the lifting lug and the reference axis of the emitter; 4) determining the process of mounting the lifting lug by using the assembly fixture:
firstly, preliminarily mounting a front lifting lug and a rear lifting lug on a transmitter, wherein the lifting lugs are only screwed into mounting screw holes and do not meet the technical requirements;
secondly, turning the emitter 180 degrees to enable the lifting lug to face downwards, and placing the emitter on a V-shaped block (3) for positioning Y and Z directions of the emitter; the positioning pin (2) is inserted into an electrical appliance interface hole on the emitter and is used for positioning the emitter in the X direction to ensure that the emitter cannot move back and forth;
thirdly, calibrating the distance between the front lifting lug and the rear lifting lug by using the positioning bush (6), and dismantling the positioning bush (6) after calibration;
fourthly, fixing the angle square component (4) on the base (1) through screws, and adjusting the lifting lug to enable the side surface of the lifting lug to be attached to the positioning surface on the angle square component;
fifthly, using a height block gauge (5) to enable the through end of the height block gauge (5) to pass through the lug bearing elastic surface, and enabling the dead end of the height block gauge (5) not to pass through the lug bearing elastic surface;
and sixthly, if the lifting lug cannot pass the detection of the height block gauge (5), repeating the fourth step and the fifth step until the lifting lug meets the requirements of the fourth step and the fifth step simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140975.XA CN108213925B (en) | 2016-12-12 | 2016-12-12 | Lifting lug mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140975.XA CN108213925B (en) | 2016-12-12 | 2016-12-12 | Lifting lug mounting method |
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| Publication Number | Publication Date |
|---|---|
| CN108213925A CN108213925A (en) | 2018-06-29 |
| CN108213925B true CN108213925B (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611140975.XA Active CN108213925B (en) | 2016-12-12 | 2016-12-12 | Lifting lug mounting method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109352273B (en) * | 2018-11-05 | 2020-02-14 | 首都航天机械有限公司 | Coordination method for high-precision assembly and interface detection of lifting lug |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4063557B2 (en) * | 2002-03-11 | 2008-03-19 | 平田機工株式会社 | Automatic piston assembly device |
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|---|---|---|---|---|
| CN204053875U (en) * | 2013-11-19 | 2014-12-31 | 贵州风雷航空军械有限责任公司 | A kind of assembly test fixture |
| CN203696373U (en) * | 2013-12-20 | 2014-07-09 | 鞍钢股份有限公司 | Device used for assembling back-up roll |
| CN105499969A (en) * | 2014-09-22 | 2016-04-20 | 上海航天精密机械研究所 | Rotational tube feeding platform for precise cylindrical part |
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| CN108213925A (en) | 2018-06-29 |
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