JG/T 45-1999 Electric flexible shaft planetary insertion type concrete vibrator
Some standard content:
National Standard of the People's Republic of China
Electric flexible shaft planetary plug-in type
Concrete vibrator
Planetary internal concrete vibrator with flexible shaft driven by electric motor1 Subject content and scope of application
UDC666.97.033
：625.08
GB8528—87
This standard specifies the product classification, technical requirements (including product performance and quality classification regulations), test methods (including reliability test methods), inspection rules, and marking, packaging, transportation, storage, etc. of electric flexible shaft planetary plug-in concrete vibrators (hereinafter referred to as vibrators).
This standard applies to electric flexible shaft planetary plug-in concrete vibrators used for compacting concrete in construction, transportation, hydraulic engineering, ports, mining, metallurgy and other projects.
Referenced standards
GB3883.1Safety of hand-held electric toolsPart 1General requirementsGB755Basic technical requirements for rotating electrical machines
GB5171
General technical conditions for small power motors
GB1032
GB8530
Test methods for three-phase asynchronous motors
Test methods for flexible shafts and hoses for tools
GB4942.1Classification of motor housing protection
GB1993
Motor cooling methods
Packaging, storage and transportation graphic symbols
3Product classification
3.1Structural type
The vibrator consists of a motor, a flexible shaft hose and a vibrating rod. The motor drives the vibrator in the vibrating rod to make planetary motion around the raceway through the flexible shaft, and the planetary motion causes the vibrating rod to generate high-frequency vibration. 3.2 Main parameters and size series
The main parameter of the vibrator is the diameter of the vibrating rod (mm), which determines the following series: 25, 30, 35, 42, 50, 60, 70.
3.3 Model
The vibrator model consists of the model code and the main parameters. The model description is as follows: Approved by the Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China on December 23, 1987 and implemented on July 1, 1988
3.4 Marking example
GB8528-87
Vibrating rod diameter (main parameter)
Inserted (internal) type
Concrete vibrator
Electric flexible shaft planetary inserted concrete vibrator with a vibrating rod diameter of 50mm: Vibrator ZN50GB8528
3.5 Basic parameters
The vibrator model and basic parameters shall comply with the provisions of Table 1. Table 1
Diameter of vibrating rod, mm
No-load vibration frequency, not less than, Hz
Maximum amplitude without load, not less than, mm
Power of motor, kW
Production rate when concrete slump is 3-4 cm, not less than, m/h
Mass of vibrating rod, not more than, kg
Diameter of flexible shaft, mm
Outer diameter of hose, mm
Connection head of motor and hose
Inner hole of anti-reverse sleeve (rotor shaft) and flexible
Shaft plugWww.bzxZ.net
Distance between end face of machine head and end face of anti-reverse sleeve
Note: The mass of vibrating rod does not include the mass of flexible shaft and hose connector. ②The amplitude is half of the full amplitude.
4 Technical requirements
4.1 The vibrator shall be manufactured according to the drawings and documents of the prescribed procedures and meet the requirements of this standard. 10
4.2 The appearance of the vibrator should be beautiful, and all joints should be firm and reliable without looseness. During operation or transportation, there should be no sharp corners or protrusions in the places where the user contacts, so as to avoid accidental restraint of the operator, such as hands, feet, legs, and clothes being caught. The appearance of the vibrator (including the hose connector) is required to be straight and smooth, and there should be no shoulder exceeding 1mm to avoid jamming the steel bar. All exposed metal surfaces processed should be treated with anti-rust treatment. The painted metal surface should be uniform, delicate, bright, flat, and consistent in color. There should be no defects such as stickiness, brittle cracks, peeling, wrinkles, bubbles, adhered particle impurities, flow marks, and obvious brush marks.
4.3 Motor
The motor used in the vibrator is a special motor, and its technical conditions should meet the following requirements: 4.3.1 The maximum temperature of the ambient air is 40℃. However, when the temperature rise test of the vibrator motor is carried out, it must be carried out under parallel light equivalent to 1kW/m2 of sunlight.
4.3.2 The vibrator motor is in continuous duty (SI). 4.3.3 The enclosure protection level of the vibrator motor shall comply with the IP44 provisions in GB4942.1. 4.3.4 The ventilation and cooling method of the vibrator motor is self-fan cooling, and its technical requirements shall comply with the IC0141 provisions in GB1993. 4.3.5 The insulation level and temperature rise value of the vibrator motor winding are shown in Table 2. Table 2
Insulation level
E-level insulation
B-level insulation
F-level insulation
Temperature rise, K
≤110
4.3.6 In order to adapt to the working conditions of the vibrator, the vibrator motor should be equipped with a handle that is easy to carry and a chassis that can be flexibly rotated during operation or a sled bottom plate that can be dragged freely, so that it can work normally on the concrete surface or steel skeleton under construction. 4.3.7 In order to ensure that the flexible shaft of the vibrator can rotate in the specified direction of torque transmission, the anti-reverse mechanism of the vibrator must be sensitive and reliable. When the motor is reversed, the vibrator rod shall not start vibrating; while when it is forward (looking at the motor head, the motor rotates counterclockwise for forward rotation), the vibrator rod can work normally. 4.3.8 The vibrator motor should withstand rough operations that may occur in normal use. After the motor has been subjected to the drop test, all parts should not have cracks, the fan can still work normally, all connection parts such as the handle, chassis, switch, etc. should not be loose or damaged, and can maintain the original function, and the electrical performance of the motor can still meet the standard requirements. 4.3.9 In order to ensure personal safety, there must be a firm and reliable grounding terminal in the vibrator motor. The metal parts of the grounding terminal should effectively prevent electrochemical corrosion. The accessible metal parts must be electrically connected to the grounding terminal (except for the accessible metal parts separated from the live parts by insulating materials that at least meet the protective insulation requirements). The contact resistance of the motor grounding terminal should not be greater than 0.12, and there should be a grounding mark at the grounding terminal.
4.3.10 The wiring groove of the vibrator motor junction box should be smooth and without sharp edges. The internal wiring should be protected from contact with the burrs that can damage the insulation of the wire. The metal holes used to pass the insulated wires should be equipped with insulating bushings, and the cable outlet holes should be equipped with cable sheaths. The cable sheath shall have sufficient mechanical strength. After 20,000 bending tests, the cable sheath shall not be loose or damaged. The number of broken strands of the wire in the cable shall not exceed 10%. There shall be a cable fastening device in the junction box to prevent the wire from being subjected to tension and torsion at the connection point in the junction box and to protect the protective layer of the wire from being damaged. After the specified tensile test, the soft cable shall not be damaged, the longitudinal displacement shall not be greater than 2mm, the moving distance of the wire at the terminal shall not be greater than 1mm, and there shall be no obvious changes at the connection point. 4.3.11 In addition to meeting the above technical conditions, the electrical performance of the motor used for the vibrator shall also meet the relevant provisions of GB3883.1 and the relevant provisions of GB755 and GB5171 corresponding to the motor power. 4.4 Vibrating rod
4.4.1 The limit deviation of the diameter of the vibrating rod is ±5% of the nominal size in Table 1. 4.4.2 The material and heat treatment process of the vibrating rod parts shall be able to meet the strength and life requirements of the vibrator. During use, looseness, breakage or sharp decline in vibrator performance due to wear are not allowed. 4.4.3 The bearing of the vibrator should ensure that the roller cone and raceway of the vibrator can be well engaged, and its bearing can use a special large-clearance ball bearing.
GB8528-87
4.4.4 When unloaded, the tolerances of the vibration parameters of the vibrator are as follows: the vibration frequency tolerance of the vibrator is ±3% of the calibrated value; a.
The maximum amplitude tolerance of the vibrator is ±10% of the calibrated value; b.
The maximum excitation force of the vibrator is ±15% of the design value; d.
The distance between the zero vibration point of the vibrator and the tip end is ±5% of the design value. 4.4.5 The bearing and oil seal of the vibrator should be properly matched. The lubricating oil of the bearing should be placed moderately and should not leak into the shell of the vibrator, causing relative sliding between the roller cone and the raceway. In order to ensure the service life of the bearings, oil seals, roller cones and raceways of the vibrator, the temperature rise test shall be carried out according to the regulations. The temperature rise of the bearing part of the vibrator shell shall not exceed 18K, and the temperature rise of the raceway part of the shell shall not exceed 10K. 4.4.6 The vibrating rod must have good water tightness and should not have water seepage. The vibrating rod should not stop vibrating, be damaged or loose when loaded. After the vibrator test, open the tip and there should be no water drops dripping out, and no dust or debris pouring out. While the vibrator is loading, measure the vibration acceleration of the hose 2m away from the hose connector end, which should not exceed 15g. 4.4.7 The vibrator should be easy to start, and the starting energy should meet the requirements of the corresponding level in Article 4.10. 4.4.8 In order to ensure the labor protection conditions of the operating workers and reduce the impact on the surrounding environment, the average value of the noise sound pressure level (A weighted) of the vibrator shall not exceed the requirements of the corresponding level in Article 4.10. 4.4.9 The connection parts of the vibrating rod should be firmly connected. After the impact test, all the connections of the vibrator shall not be loose or damaged, and can still work normally.
4.5 Flexible shaft hose of the vibrator
4.5.1 The flexible shaft of the vibrator shall be made of group I and I steel wires in carbon spring steel wire. However, the inner layer of the flexible shaft (except the outermost two layers) is allowed to be made of one group of steel wires in this standard.
4.5.2 No gaps are allowed between the layers of the flexible shaft. The surface should be smooth and free of brittle oxide film caused by heat treatment. The radius of curvature should be uniform over the entire length. The bending stiffness should be consistent at all locations and in all directions. The deviation of the bending stiffness in one direction at any location from the average value of each measuring point should not exceed ±15% of the average value.
4.5.3 The flexible shaft should not be loose when cut at any location. The deviation measured at the 6 wire lead diameters away from the sawing point should be within the allowable tolerance band of the flexible shaft diameter.
4.5.4 The tolerance of the flexible shaft diameter is set as the h12 level accuracy in GB1801 "Tolerance and fit dimensions to 500mm holes, shaft tolerance bands and fits".
4.5.5 The outer surface of the hose should be smooth and flat, without any trace of cloth grain. The outer rubber layer should have good elasticity and wear resistance, and the rubber tear strength should not be less than 1000N/cm2. The bottom rubber of the hose is firmly bonded to the lining spring. According to the specified method, the adhesion is not less than 50N/cm2. mm, the inner diameter tolerance is +0.5,
4.5.6 The outer diameter tolerance of the hose is
mm, and the coaxiality tolerance of the inner and outer diameters of the hose is Φ1.5mm. 0
4.5.7 The lining spring of the vibrator hose should be made of bright rust-free cold-rolled spring steel strip with a tensile strength of not less than 750N/mm2 and a surface hardness of HRC25~30. The lining spring is not allowed to be connected (or welded) in a hose. The hose should be able to withstand accidental rolling without damage. It should be checked according to the specified method and tested with a line pressure of 400N/cm. The change in the inner diameter of the hose lining spring before and after the test should not exceed 0.3mm. 4.5.8 The mechanical connection between the vibrator hose and the hose connector (connector) should be firm and reliable. After a half-minute tensile test, there should be no obvious movement between the vibrator hose and the hose connector (connector). The tensile force value (unit N) is 200 times the mass (kg) of the vibrator, but not more than 1200N.
4.5.9 The hand-held part of the vibrator hose should not feel uncomfortable due to vibration, and its vibration acceleration value should not be greater than the provisions of the corresponding level of this standard.
4.5.10 The vibrator flexible shaft hose must have good elasticity and feel comfortable. The minimum curvature radius that the hose must reach is 250mm. The straightness of the hose shall be checked, and the straightness shall not be greater than the hose radius. 4.5.11 The flexible shaft plug and the hose connector shall have reliable permanent packaging, which can prevent dust and water. After the specified method test, the packaging shall not have cracks, damage, etc.
4.6 Before the new product is put into production, an industrial assessment must be carried out, and the performance of the whole machine must be tested and inspected in a comprehensive, systematic and real way. Three GB8528-87
prototypes were assessed. After the assessment, they met this standard and met the design requirements. During the industrial assessment, detailed records must be made and certificates obtained. After the assessment is completed, a prototype disassembly report shall be written. The industrial assessment time is shown in Table 3. Table 3
4.7 Assembly
Industrial Assessment Time
4.7.1 All parts, purchased parts and accessories used for assembly must be inspected and qualified before assembly. Industrial Assessment Time
4.7.2 The parts of the vibrator should be cleaned before assembly, and special tools should be used in a special assembly room to ensure that the cavity (below the oil seal) is clean, dry and oil-free after the vibrator is assembled. 4.8 Quality Assurance
The user shall comply with the transportation, storage and use rules. Within six months from the date of shipment from the manufacturer, but the accumulated use time shall not exceed half of the one-time trouble-free life (qualified products) in Table 5. If the vibrator is found to be damaged or malfunctioning due to poor manufacturing, the manufacturer shall be responsible for free repair or replacement of damaged parts (except wearing parts). The wearing parts of the vibrator supplied as a set shall be provided according to the instructions. 4.9 Performance
4.9.1 The vibrator shall be interchangeable. The nominal dimensions of the vibrator hose connector, motor head, flexible shaft plug, anti-reverse sleeve (rotor shaft) inner hole, and the distance between the head end face and the anti-reverse sleeve end face are shown in Table 1, and the tolerance requirements of each part are shown in Table 4. Table 4
Country name
Outer diameter of hose connector
Inner diameter of motor head
Outer diameter of flexible shaft plug
Inner hole of anti-reverse sleeve (rotor shaft)
Distance between end face of head and end face of anti-reverse sleeve, mm4.9.2 The reliability index of vibrator shall comply with the provisions of the corresponding level of this standard. 4.10 Performance and quality classification of vibrator6 Before new products are put into production, industrial assessment must be carried out, and the performance of the whole machine must be comprehensively, systematically and realistically tested and inspected. Three GB8528-87
prototypes were assessed. After assessment, they met this standard and the design requirements. During the industrial assessment, detailed records must be made and certificates obtained. After the assessment is completed, a report on the disassembly of the prototype must be written. The time for industrial assessment is shown in Table 3. Table 3
4.7 Assembly
Industrial Assessment Time
4.7.1 All parts, purchased parts and accessories used for assembly must be inspected and qualified before assembly. Industrial Assessment Time
4.7.2 The parts of the vibrating rod should be cleaned before assembly, and the assembly should be carried out in a special assembly room with special tools to ensure that the cavity (below the oil seal) is clean, dry and oil-free after the vibrating rod is assembled. 4.8 Quality Assurance
The user shall comply with the rules of transportation, storage and use, and within six months from the date of shipment from the manufacturer, but the accumulated use time shall not exceed half of the trouble-free life (qualified products) in Table 5. If the vibrator is found to be damaged or malfunctioning due to poor manufacturing, the manufacturer shall be responsible for free repair or replacement of damaged parts (except wearing parts). The wearing parts of the vibrator supplied as a set shall be provided in accordance with the instructions. 4.9 Performance
4.9.1 The vibrator shall be interchangeable. The nominal dimensions of the vibrator hose connector, motor head, flexible shaft plug, anti-reverse sleeve (rotor shaft) inner hole, and the distance between the head end face and the anti-reverse sleeve end face are shown in Table 1, and the tolerance requirements of each part are shown in Table 4. Table 4
Country name
Outer diameter of hose connector
Inner diameter of motor head
Outer diameter of flexible shaft plug
Inner hole of anti-reverse sleeve (rotor shaft)
Distance between end face of head and end face of anti-reverse sleeve, mm4.9.2 The reliability index of vibrator shall comply with the provisions of the corresponding level of this standard. 4.10 Performance and quality classification of vibrator6 Before new products are put into production, industrial assessment must be carried out, and the performance of the whole machine must be comprehensively, systematically and realistically tested and inspected. Three GB8528-87
prototypes were assessed. After assessment, they met this standard and the design requirements. During the industrial assessment, detailed records must be made and certificates obtained. After the assessment is completed, a report on the disassembly of the prototype must be written. The time for industrial assessment is shown in Table 3. Table 3
4.7 Assembly
Industrial Assessment Time
4.7.1 All parts, purchased parts and accessories used for assembly must be inspected and qualified before assembly. Industrial Assessment Time
4.7.2 The parts of the vibrating rod should be cleaned before assembly, and the assembly should be carried out in a special assembly room with special tools to ensure that the cavity (below the oil seal) is clean, dry and oil-free after the vibrating rod is assembled. 4.8 Quality Assurance
The user shall comply with the rules of transportation, storage and use, and within six months from the date of shipment from the manufacturer, but the accumulated use time shall not exceed half of the trouble-free life (qualified products) in Table 5. If the vibrator is found to be damaged or malfunctioning due to poor manufacturing, the manufacturer shall be responsible for free repair or replacement of damaged parts (except wearing parts). The wearing parts of the vibrator supplied as a set shall be provided in accordance with the instructions. 4.9 Performance
4.9.1 The vibrator shall be interchangeable. The nominal dimensions of the vibrator hose connector, motor head, flexible shaft plug, anti-reverse sleeve (rotor shaft) inner hole, and the distance between the head end face and the anti-reverse sleeve end face are shown in Table 1, and the tolerance requirements of each part are shown in Table 4. Table 4
Country name
Outer diameter of hose connector
Inner diameter of motor head
Outer diameter of flexible shaft plug
Inner hole of anti-reverse sleeve (rotor shaft)
Distance between end face of head and end face of anti-reverse sleeve, mm4.9.2 The reliability index of vibrator shall comply with the provisions of the corresponding level of this standard. 4.10 Performance and quality classification of vibrator
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