Some standard content:
UDC 621. 3. 045. 7
National Standard of the People's Republic of China
GB/T 14527—93
Compound damping isolator and compound damper
Compound damping isolator and compound damper1993-07-21Promulgated
1994-03-01Implementation
State Bureau of Technical Supervision
W.National Standard of the People's Republic of China
Compound damping isolator and compound damper
Compound damping isolator and corapound damper1Subject content and scope of application
GB/T 14527--93
This standard specifies the classification, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of non-resonant peak nonlinear composite damping isolators (hereinafter referred to as isolators) and composite dampers (hereinafter referred to as dampers). This standard is applicable to composite damping isolators and composite dampers used for vibration isolation and impact protection of electronic equipment and instruments. 2 Reference standards
Packaging, storage and transportation pictorial symbols
GB 2298 Mechanical vibration and shock spectrum
GB 2423.5
Basic environmental test procedures for electric and electronic products Test E*: Impact test method Test Eb: Collision test method GB 2423.6
GE 2123.10
Basic environmental test procedures for electric and electronic products Test Fc: Vibration (sinusoidal) test method Batch inspection counting single sample procedure and sampling table (applicable to inspection of continuous batches) GB 2828
GJB150.3 Military equipment environmental test method High overflow test GJB150.4 Military equipment environmental test method Low temperature test Military equipment environmental test method Salt spray test GJB150.11
GJB150.16 Military equipment environmental test method Vibration test Military equipment environmental test method
GJB150.18
3 Terminology
Shock test
In addition to the terms in GB 2298, this standard also specifies the following terms. 3.1 Resonane
tee peak-free
Resonance peak-free refers to the phenomenon that the vibration transmission rate of the elastic system composed of an isolator with a predetermined nonlinear resistance and a test load is not greater than 1.5 under the specified vibration level. 3.2 Unlocking frequency frequeney only just out of lock-in without resonance peak The frequency at which the locked state of the vibration isolation system changes to the elastic state under a certain vibration excitation level. 3.3 Vibration transmissivilv The ratio of the output test (force, displacement, velocity, or acceleration) of the vibration isolation system at a certain frequency to the input of the same dimension during the stop scanning vibration. For non-linear vibration isolation systems, the magnitude of the vibration input must also be indicated. 3.4 Shock transmissivity The ratio of the peak acceleration of the vibration isolation system's shock response to a shock pulse that meets the specified waveform deviation to the peak acceleration of the input shock pulse.
Approved by the State Administration of Technical Supervision on July 21, 1993, and implemented on March 1, 1994
W.4 Product classification
4.1 Type
According to the use environment, it is divided into:
Class K - for airborne environment
Class J - for ship environment
Class C - for vehicle environment
4.2 Basic parameters
GB/T 14527-93
The basic parameters and main dimensions of spacers and dampers are shown in Table 1. 4.3 Product marking
4.3.1 Composition of plastic number
The model of vibration isolator and damper consists of four parts:
4.3.2 Marking example
Nominal load.N
-Use environment category
Performance characteristics
General product code
The composite damping vibration isolator for vehicles with a nominal load of 500N is marked as: Isolator G FC-500GB/T14527—93
Can be K, JC
F represents composite damping
G represents plaque vibration
7. Represents positive damper
The composite damper for ships used in conjunction with the vibration isolator with a nominal load of 500N is marked as: damper ZFJ500GB/T14527—93
W.GB/T14527 --93wwW.bzxz.Net
Maximum deformation in the vertical direction
Maximum deformation in the radial direction
Noise frequency
QGE--Q22
o11--52
Transmitted load range N
Axial nominal load
W.5 Technical requirements
5.1 Static load deformation
GB/T 14527—93
The height H of the isolator after it is subjected to the nominal static load in the vertical direction shall comply with the provisions of Table 1. The isolator and damper shall not be subjected to static load in the radial direction.
5.2 Vibration isolation performance
When the isolator is subjected to the rigid load of the nominal load, the vibration transmission rate in the vertical and horizontal directions shall comply with the provisions of Table 2. After the vibration, durability, impact, collision and strong shock tests, the vibration transmissibility of the product shall not exceed 20% of the specified index in Table 2. 5.3 Vibration resistance After the perturbation durability test, the vibration transmissibility of the product shall comply with the provisions of Table 2. Table 2 Technical requirements for normal vibration test Environmental category Excluding power-on Machine teaching environment Real power-on environment Vehicle environment Test conditions Item rate. H2 Medium, H Frequency, Hz Vibration transmissibility Unlocking rate W.bzsoso: com 5.4 Shock resistance and collision performance GB/T 14527-93
When the product is subjected to a nominal rigid load, its impact transmission rate shall comply with the specifications in Table 3. Table 3
Velocity variation
5.5 Strong impact resistance
Half-sine impact pulse displacement
Peak phase velocity
Pulse duration
Impact transmission rate
5.5.1 Specifications The product shall be subjected to a strong impact test on a light impact test machine or a medium impact test machine in accordance with the provisions of GJB150.18. The ratio of the output to the peak value of the input acceleration of the system shall not be less than 0.055.5.2 After the strong impact test, the metal part of the product is allowed to have a small amount of deformation, but it shall not be delivered for use. 5.6 Environmental temperature requirements
5. 6. 1 The product shall be able to work normally within the temperature range of ~10~~+50 ℃. 5.6.2 The performance of the product should not change significantly after short-term storage at -50~+70°C. 5.7 Salt spray performance
The product used for ships should have salt spray resistance. After the salt spray test, the metal parts of the product should not have obvious rust, and the rubber and metal bonding surface should not have separation.
5.8 Oiliness
The product used in contact with oil should use oil-resistant rubber parts. 5.9 Appearance quality
5.9.1 The surface of the rubber part of the product should be smooth, without lumps, edges, cracks, bubbles and other defects, but it is allowed to have a sector roughness or mold indentation with a depth of no more than 0.5 Itu.
5.9.2 The surface of the metal part of the product should be smooth, without cracks, corrosion and other mechanical damage, and have a double layer of anti-corrosion coating. 5.10 Design and manufacturing requirements
5.10.1 The product should have a protective function to prevent the equipment from being separated from the base when subjected to strong impact. 5.10.2 The rubber-to-metal bonding strength of the product should not be less than 2.5MPa. :11: Requirements
The installation part of the vibration isolator and damper on the equipment soil should be a smooth surface, and its area centered on the installation hole should not be less than F×L (see Table 1).
W.6 Test method
6.1 Test equipment and conditions
GB/T 14527---93
6.1.1 The test equipment should be inspected and qualified by the design department and within the validity period. 6.1.2 The dynamic performance of the vibration isolator (i.e. vibration isolation and impact resistance) shall be tested with a rigid simulated load of the nominal load (tolerance ±5%).
6.1.3 The standard test temperature of the product is 20±5°C, and the relative humidity and atmospheric pressure are not specified. 6.2 Static load deformation test
6.2.1 During the test, preload twice from zero load to upper load limit, and keep at least 30% at upper load limit and zero load each time. 6.2.2 Load the lower load limit, nominal load and upper load limit of the vibration isolator according to the load range specified in Table 1 at a loading speed of no more than 4mm deformation per minute, and keep at least 30s at each load, and record the deformation of the isolator under each load. 6.3 Vibration isolation performance and durability test
6.3.1 The performance of the vibration test bench shall comply with the relevant provisions of GB2423.10. 6.3.2 Usually, the vibration test is carried out by evenly distributing four vibration isolators around the center of gravity of the rigid mass block. If the test conditions are not available, a single vibration isolator can also be installed at the center of gravity of the rigid mass for testing. When testing in the horizontal direction, the center of gravity height should be reduced as much as possible to avoid the shaking of the mass block.
6.3.3 Vibration isolation performance test According to the test conditions specified in Table 2, the sine sweep vibration test method is used to record the vibration transmissibility. 6.3.4 The endurance test adopts the sine sweep test method. The test conditions shall comply with the provisions of Table 2. The sweep rate is 1000 Hz per minute. The test time is 2 h. 6.3.5 The test shall be carried out in any direction along the vertical direction and the horizontal plane. 6.4 Impact and collision test 6.4.1 Unless otherwise specified by this standard or the supplier and the buyer, the impact and collision test methods shall be carried out in accordance with the provisions of GB2423.5 and GB2423.6. 6.4.2 The frequency characteristics of the measurement system shall meet the requirements of Figure 1 and Table 4. The f, f., f, and f in Figure 1 shall be selected according to Table 4. The mouse system shall be calibrated before the test. The detection point shall be as close as possible to the center of the impact machine table and the center of gravity of the rigid load. 6.4.3 The severity of the test shall be selected from Table 3 according to the use environment. Od
Figure 1 Shock pulse measurement system Rated rate 6
W. Pulse duration
18 and 30
GB/T 1452793
Low frequency cut-off frequency
High frequency cut-off rate
Response rate when it exceeds +1R
6.4. 4 Equipment subjected to repeated mechanical collisions during use and transportation shall be subjected to collision tests. The severity of the test shall be selected from Table 3 according to the use environment. The repetition frequency of the collision is 40 ± 5 min., and the total number of collisions is 3000 ± 10 times. 6.5 Strong shock test
6.5.1 The strong shock test method shall be carried out in accordance with the provisions of GJB 150.18. 6.5. 2 The measurement system shall be selected, calibrated and installed in accordance with the provisions of Article 6.4.2. In Table 4, the frequency, frequency, and frequency are specified as 1 Hz, 1 Hz, 3 kHz, and 6 kHz, respectively.
6.6 Ambient temperature test
The test method shall be carried out in accordance with the provisions of GJB 150.3 and GJB 150.4. 6.7 Salt spray test
The test method shall be carried out in accordance with the provisions of GJB 150.11, and the test time shall be 48 h. 6.8 Appearance quality inspection
The appearance quality of the product shall be inspected by visual inspection. 7 Inspection rules
Inspection is divided into factory inspection and type inspection. 7.1 Factory inspection
The product shall be inspected by the manufacturing inspection department for appearance and inspected according to the sampling rules before it is allowed to enter the factory. 7.2 Type inspection
7.2. 1 Type inspection should generally be carried out when one of the following situations occurs a.
Trial type identification of new products or old products transferred to the factory: After formal production, if there are major changes in structure, materials, and processes that may affect product performance, during normal production, periodically or after accumulating a certain amount of output, a periodic inspection should be carried out after a long-term suspension of production + when production is resumed!
When the factory inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. 7.2.2 The number of samples submitted for type inspection of the same model of product is 6. 44 tests are selected, 7.2.3 Type inspection should be carried out in units that have obtained national metrology certification and a sincere inspection report should be issued. 7.3 Inspection rules Each inspection batch is composed of products of the same model and with basically the same production conditions and production time. The quantity of each batch shall not exceed 15007.3.1 W.GB/T 14527-93 7.3.2 stipulates that the qualified quality level AQL=2.5 and the inspection level 11.1=1. Sampling inspection and qualified or unqualified judgment shall be carried out according to (B 2828). 7.4 The items of factory inspection and type inspection shall comply with the provisions of Table 5. Table Inspection items Appearance inspection Static load deformation Vibration isolation performance Vibration durability Impact resistance Magnetic impact resistance Strong impact resistance Environmental temperature test Salt test Note " \ indicates mandatory items
Technical requirements
Testing methods
② Sampling inspection means sampling a group of different types of isolators with rubber metal parts shells. 8 Marking, packaging, transportation, storage
Inspection classification
Type inspection
Factory inspection
8.1 Each vibration isolator should have the markings of the production unit, product name, model, production serial number (corresponding to the year and month of production) and the inspection qualified mark.
8. 2 The vibration isolator shall be packed in cartons or boxes and measures shall be taken to prevent corrosion and collision. The packaging box shall have the shipping and receiving marks and packaging storage and transportation diagrams in accordance with GB 191. 8.3 The packaged isolator can be transported by conventional means, but must be protected from moisture, sunlight, strong extrusion and collision. 8.4 The isolator should be stored in an environment with a temperature of 0~40°C and a relative humidity of no more than 80%. The vibration isolator should be kept away from direct sunlight and 1 m away from heat sources. Above, and prevent contact with acid, alkali, oil and other harmful substances. The validity period of the 85 mover is five years, starting from the date of manufacture. The service life of the vibrator starts from the time the load is applied and should be included in the validity period.
Additional remarks:
This standard is proposed by China State Shipbuilding Corporation. This standard was submitted by the Sixth Research Institute of China State Shipbuilding Corporation. This standard was drafted by Shanghai Jiaotong University, and the Sixth Research Institute of China State Shipbuilding Corporation participated in the drafting. The main drafters of this standard are Gou Houshu and Liu Yunan. W.5 Strong impact test
6.5.1 The strong impact test method shall be carried out in accordance with the provisions of GJB 150.18. 6.5.2 The measurement system shall be selected, calibrated and installed in accordance with the provisions of 6.4.2. The,/., J,, in Table 4 are respectively specified as 1 Hz, 1 Hz, 3 klz, 6 kHz.
6.6 Ambient temperature test
The test method shall be carried out in accordance with the provisions of GJB 150.3 and GJB150.4. 6.7 Salt spray test
The test method shall be carried out in accordance with the provisions of GJB 150.11, and the test time shall be 48 h. 6.8 Appearance quality inspection
The appearance quality of the product shall be inspected by visual inspection. 7 Inspection rules
Inspection is divided into factory inspection and type inspection. 7.1 Delivery inspection
Products shall be inspected by the manufacturing inspection department for appearance and tested according to the sampling rules before they are allowed to enter the factory. 7.2 Type inspection
7.2.1 Type inspection shall generally be carried out in any of the following situations a.
Trial and type identification of new products or old products transferred to the factory for production: after formal production, if there are major changes in structure, materials, and processes that may affect product performance, during normal production, periodically or after accumulating a certain amount of output, a periodic inspection shall be carried out; after a long-term suspension of production + when production is resumed!
When the results of the factory inspection are significantly different from those of the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. 7.2.2 The number of samples submitted for type inspection for the same model of product is 6. 44 tests are selected, 7.2.3 Type inspection shall be carried out in units that have obtained national metrology certification and an inspection report shall be issued. 7.3 Inspection rules Each inspection batch is composed of products of the same model and with basically the same production conditions and production time. The quantity of each batch shall not exceed 15007.3.1 W.GB/T 14527-93 7.3.2 stipulates that the qualified quality level AQL=2.5 and the inspection level 11.1=1. Sampling inspection and qualified or unqualified judgment shall be carried out according to (B 2828). 7.4 The items of factory inspection and type inspection shall comply with the provisions of Table 5. Table Inspection items Appearance inspection Static load deformation Vibration isolation performance Vibration durability Impact resistance Magnetic impact resistance Strong impact resistance Environmental temperature test Salt test Note " \ indicates mandatory items
Technical requirements
Testing methods
② Sampling inspection means sampling a group of different types of isolators with rubber metal parts shells. 8 Marking, packaging, transportation, storage
Inspection classification
Type inspection
Factory inspection
8.1 Each vibration isolator should have the markings of the production unit, product name, model, production serial number (corresponding to the year and month of production) and the inspection qualified mark.
8. 2 The vibration isolator shall be packed in cartons or boxes and measures shall be taken to prevent corrosion and collision. The packaging box shall have the shipping and receiving marks and packaging storage and transportation diagrams in accordance with GB 191. 8.3 The packaged isolator can be transported by conventional means, but must be protected from moisture, sunlight, strong extrusion and collision. 8.4 The isolator should be stored in an environment with a temperature of 0~40°C and a relative humidity of no more than 80%. The vibration isolator should be kept away from direct sunlight and 1 m away from heat sources. Above, and prevent contact with acid, alkali, oil and other harmful substances. The validity period of the 85 mover is five years, starting from the date of manufacture. The service life of the vibrator starts from the time the load is applied and should be included in the validity period.
Additional remarks:
This standard is proposed by China State Shipbuilding Corporation. This standard was submitted by the Sixth Research Institute of China State Shipbuilding Corporation. This standard was drafted by Shanghai Jiaotong University, and the Sixth Research Institute of China State Shipbuilding Corporation participated in the drafting. The main drafters of this standard are Gou Houshu and Liu Yunan. W.5 Strong impact test
6.5.1 The strong impact test method shall be carried out in accordance with the provisions of GJB 150.18. 6.5.2 The measurement system shall be selected, calibrated and installed in accordance with the provisions of 6.4.2. The,/., J,, in Table 4 are respectively specified as 1 Hz, 1 Hz, 3 klz, 6 kHz.
6.6 Ambient temperature test
The test method shall be carried out in accordance with the provisions of GJB 150.3 and GJB150.4. 6.7 Salt spray test
The test method shall be carried out in accordance with the provisions of GJB 150.11, and the test time shall be 48 h. 6.8 Appearance quality inspection
The appearance quality of the product shall be inspected by visual inspection. 7 Inspection rules
Inspection is divided into factory inspection and type inspection. 7.1 Delivery inspection
Products shall be inspected by the manufacturing inspection department for appearance and tested according to the sampling rules before they are allowed to enter the factory. 7.2 Type inspection
7.2.1 Type inspection shall generally be carried out in any of the following situations a.
Trial and type identification of new products or old products transferred to the factory for production: after formal production, if there are major changes in structure, materials, and processes that may affect product performance, during normal production, periodically or after accumulating a certain amount of output, a periodic inspection shall be carried out; after a long-term suspension of production + when production is resumed!
When the results of the factory inspection are significantly different from those of the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. 7.2.2 The number of samples submitted for type inspection for the same model of product is 6. 44 tests are selected, 7.2.3 Type inspection shall be carried out in units that have obtained national metrology certification and an inspection report shall be issued. 7.3 Inspection rules Each inspection batch is composed of products of the same model and with basically the same production conditions and production time. The quantity of each batch shall not exceed 15007.3.1 W.GB/T 14527-93 7.3.2 stipulates that the qualified quality level AQL=2.5 and the inspection level 11.1=1. Sampling inspection and qualified or unqualified judgment shall be carried out according to (B 2828). 7.4 The items of factory inspection and type inspection shall comply with the provisions of Table 5. Table Inspection items Appearance inspection Static load deformation Vibration isolation performance Vibration durability Impact resistance Magnetic impact resistance Strong impact resistance Environmental temperature test Salt test Note " \ indicates mandatory items
Technical requirements
Testing methods
② Sampling inspection means sampling a group of different types of isolators with rubber metal parts shells. 8 Marking, packaging, transportation, storage
Inspection classification
Type inspection
Factory inspection
8.1 Each vibration isolator should have the markings of the production unit, product name, model, production serial number (corresponding to the year and month of production) and the inspection qualified mark.
8. 2 The vibration isolator shall be packed in cartons or boxes and measures shall be taken to prevent corrosion and collision. The packaging box shall have the shipping and receiving marks and packaging storage and transportation diagrams in accordance with GB 191. 8.3 The packaged isolator can be transported by conventional means, but must be protected from moisture, sunlight, strong extrusion and collision. 8.4 The isolator should be stored in an environment with a temperature of 0~40°C and a relative humidity of no more than 80%. The vibration isolator should be kept away from direct sunlight and 1 m away from heat sources. Above, and prevent contact with acid, alkali, oil and other harmful substances. The validity period of the 85 mover is five years, starting from the date of manufacture. The service life of the vibrator starts from the time the load is applied and should be included in the validity period.
Additional remarks:
This standard is proposed by China State Shipbuilding Corporation. This standard was submitted by the Sixth Research Institute of China State Shipbuilding Corporation. This standard was drafted by Shanghai Jiaotong University, and the Sixth Research Institute of China State Shipbuilding Corporation participated in the drafting. The main drafters of this standard are Gou Houshu and Liu Yunan. W.
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