This part of GB/T8910 specifies the technical requirements for measuring the vibration of the handle of a hand-held portable power shovel and a riveter, and also defines the test procedure for measuring the vibration of the handle when the tool is operating under a specific load. This part is applicable to shovels and riveters powered by electric, pneumatic, hydraulic or internal combustion. GB/T 8910.2-2004 Methods for measuring vibration of the handle of hand-held portable power tools Part 2: Shovel and riveter GB/T8910.2-2004 Standard download decompression password: www.bzxz.net

1C13.160;25.140.01
National Standard of the People's Republic of Chinabzxz.net
G5/T8910.2—2004/IS08662-2.1992 replaces G/910,3-19
Hand-held portable power tools
Method for measuring vibrations at the handle
Part 2: Chipping hammers and riveting hammers
Hand-held prtable power loulsMeasuremenl uf vibrations at the handlePari2:Chipping hammers and riveting hammers(1S0 8662 2:1992,1H3T)
2004-06-09
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of the People's Republic of China
2004~12-01Implementation
GB/T $910.22004/rX1 8662-2:1992G/893 Hand-held portable power tools for the purpose of power conversion are divided into the following parts: Part 1: General; Part 2: Shovel and riveting machine; Part 3: Rock cutters and rotary chains; Part 4: Grinding machines; Part 5: Pavement breakers and construction tools; Part 6: Punches, impulses, light wrenches, blasting knives and blasting tools; Part 7: Other optical machines and rotary auger, special auger; Part 8: Fixing machines; Part 9: Punching shears; Part 10: Punching machines!
Part 12: Belt and Wire Mesh, Circular or Reciprocating Boilers - Part 3 Turbines
Part 14: Tools and implements for stone, this part is part 2 of G3T9.).
This part is equivalent to G/6910.2-1392 (Standard Test Methods for Pneumatic and Electrical Equipment for Use with Pneumatic Equipment), including Part 38662-2:1992/Ad.11999. The revised content has been incorporated into the text and the blank spaces in the text are marked with vertical double lines (II). This part replaces G/6910.2-1392 (Standard Test Methods for Pneumatic and Electrical Equipment for Use with Pneumatic Equipment). This part is equivalent to G/6910.2-1392 (Standard Test Methods for Pneumatic and Electrical Equipment for Use with Pneumatic Equipment). This part is equivalent to G/6910.2-1392 (Standard Test Methods for Pneumatic and Electrical Equipment for Use with Pneumatic Equipment). This part is general and explicit. Note: Some expressions applicable to international standards are changed to tables applicable to international standards. In addition, the informative appendices and core are modified except for the international standards. GBT 1.120m0 adopts the provisions of the international standard as the provisions of this part. The main differences between this part and 3289102-108 are as follows: it only involves movables and rivets; it is an independent non-standard; it adds a preface and a regulatory appendix; the name of the standard is adjusted to be consistent with the name of the international standard. The appendix to this part is a normative appendix. This part was proposed by the Machinery Industry Association, and this part is under the jurisdiction of the Technical Committee for Standardization of Pneumatic Tools (SA/TC-73). Drafting of this part: Tianshui Pneumatic Tools Research Institute, the main drafter of this part, is responsible for the European version of the standard replaced by this part: t3/ 89:0,3—1588.
1 Yantian
GB/T 8910.2—2004/1S 8662-2:19923 Hand-held portable power tool handle vibration measurement method Part 2: Shovels and nailers
This part of GB/T 8910 defines the technical requirements and procedures for measuring the vibration of the handle of hand-held portable power tools and corresponding hand-operated tools when the tools are operating under specific load conditions. This part is applicable to shovels and nailers (hereinafter referred to as tools) powered by manual, pneumatic, hydraulic or internal combustion engines. 2 Normative references
The documents listed below become clauses of this part through reference in this part of GB/T 8910.2—2004/1S 8662-2:19923 Hand-held portable power tool handle vibration measurement method Part 2: Shovels and nailers
This ... No, the latest editions of these documents shall apply. For undated references, the latest edition shall apply to this section.
GB/15521 Mechanical and pneumatic test methods for rock mechanical and pneumatic tools (cIS02787) B/T5910.1-2004 Methods of measuring the root acceleration of portable power tools Part 1: General (ISO8662-1:, D)
3 Quantities to be measured
The following are the quantities to be measured:
R) The weighted acceleration shall be obtained in accordance with the requirements of 3.1 of GB/T8910.1·2004. The frequency analysis shall be in accordance with the requirements of 3.2 of GB/T89101-2(0(14). If other methods can prove that it is not recommended, the frequency analysis may not be performed. h) Voltage, gas pressure or pressure
c) Impact rate;
d Propelling force
4 Use
4.1 General
The technical requirements for the instrument shall comply with the provisions of 4.1 to 4.8 in GBTB910.120C4. 4.2 The technical requirements for the sensor shall comply with the provisions of GB/T 1091-1-2004 4.1. For lightweight handles such as those made of plastic, the sensor should be as small as possible. If the handle itself is used as a filter, the lightweight sensor can be directly bonded to the fixing surface of the handle, and its mass should be less than 5g. 4.3 The fixing of the sensor end and the handle should comply with the provisions of 4.2 to 4.4 of GB/T 891 C.1-2004 (see Figure 1). For plastic handles, it is not necessary to use a mechanical vibration instrument (see GB/T 1091-1-2004 4.37: 4.4 Auxiliary instruments Use a meter to measure the root mean square value to measure the power supply voltage of the power tool. 1 GB/T 8910.2-2004/(SO B662-2;1992 Use a precision pressure gauge to determine the pressure range and force of the hydraulic oil. Use a force gauge to determine the pressure (6.3). 4.5 Calibration of the control standard The calibration should be carried out in accordance with the requirements of 4.8 in GB/T8910.2004. 5 Measurement direction and position 5.1 Measurement direction The measurement direction should be in the direction similar to the punch direction. The Z direction (see Figure 1): The basic center is located For the determination of the calibration system, see Appendix A. 5.2 The measurement position and reading position are set on the main body of the sensor, which is normally held and with the thrust applied, and the sensor base is fixed at 1/2 of the handle length (then 1 circumference) of the axis of the power tool or the power tool. The position and measurement direction of the sensor are in accordance with the working rules and 6. 1 General
New tools that are well lubricated and running normally should be inspected: GB/T8910.22004/1S0>8662-2:1992 Before turning on the tool, charge the electric, hydraulic or fuel tools for about 1 second. This is not necessary for pneumatic tools. The rated voltage or air pressure of the calibrated power source should remain unchanged during the test and should be used according to the manufacturer's requirements. In addition, during the entire test, the upper and lower parts must be kept stable (see (3)). When measuring, the energy-absorbing end should be positioned so that the operator can stand upright and push the test tool vertically downward (Figure 2). The operator's working position when standing on the test
Figure 2 Operator's working position
6.2 Pole follower
Load is: Human simulated pressure working conditions The energy absorber is composed of a tube with a ball inside. The tube is fixed on a solid base with a mass of at least 300 to prevent it from rebounding. A test rod is passed through the upper end of the steel ball and connected to the test needle for operation test. The heat treatment of the steel base is 52HR2HRC or 15UHV ± 1UHV. The heat treatment of the test station and the test fiber support is 55HRC2HRC. The hardness of the steel ball should be much larger than 63HR. The dimensions of the test rod are shown in Figure 3 and Table 1. The test rod is selected in accordance with the test tool. GB/T8910.2—2004/150 B662-2.1992This period of reflection of the rod must be passed through the teaching quantity wuke
National 3 Steel Construction Energy Concentrator
Table 1 Design criteria for the whole absorber
Confession weight
E,3 Grip force
General point
True diameter of steel ball
Single square height
Heat treatment hardness
Secret HRC2HRC
Unit: mm
Ball catch height H
In addition to the other self-weight, the thrust should be applied vertically so that the test calcium does not interfere with the fixed set of the energy absorber, so as to ensure that the machine runs normally and smoothly within the specified performance range. The thrust F (N) added vertically is 40 times the measured weight (kg), which should be less than 80 kg. Note: If the amount is 3 kg, the thrust should be about 1 kg. For tools with adjustable size, the thrust should be the middle value of the amount specified by the manufacturer. When measuring, the operator should use the thrust F on the scale. At this time, the thrust is equal to the weight of the operator minus the reading of the measuring range. To check the effectiveness of the test procedures and specifications, use the instrument with the mean square value to measure the power source of the pneumatic tool. CB/T8910.2-2004/[SO 8662-2,1992 The air pressure of pneumatic tools should be in accordance with the provisions of CH/5S21, and the calibrated force value of the manufacturer should be maintained during the entire test period.
The hydraulic pressure should be measured and kept constant according to the manufacturer's requirements. The above technical requirements also meet the tool driven by other means (internal combustion engine). The signal from the vibration sensor is used to determine the working rate of the tool. 7.2 Test sequence
should be completed by three skilled operators in a row. Each group should carry out 100% running measurements. This test should be carried out after the tool is semi-stable, and the test time for each test should not be less than 1 month. 7.3 Validity of measurement
The measurement should be continuous until a set of valid or test data is obtained, that is, for the same author 5 to 10 consecutive calculations, the coefficient of variation is valid! 7. 4 Variation coefficient (C) The variation coefficient (C) is defined as the ratio of the standard deviation obtained from continuous measurement to the standard deviation, which is expressed as: C
In Chinese:
Coefficient of variation!
Standard deviation, unit price per meter square (): -- mean value, unit is meter per second square (m/3\); S
(x,x):
The measured value of the first time, unit is meter per second square (m/) Shear factor,
3 Test report
In addition to the provisions of Chapter 7 of GH/139.1U.1--2004, the report shall also state the following items. a) The size of the test nail rod!
b) The size of the energy absorber;
Voltage, pressure or other data related to the power source! 》Impact test,
e) Note.
GB/T 89IC.2—2004/ISO 8662-2:19924, 1Z direction: Direction parallel to the impact universal direction. Appendix A
(Normative Appendix)
Determination of basic center coordinate system
4.2Y direction: Direction parallel to the plane of the axis 2, the axis or the right angle to the axis 2. A, 3x direction: Direction perpendicular to both the Y and Z directions: A4 orthogonal plane. When using the machine to test the sensor, the sensor should be combined with the direction to be tested, and the design should ensure that the upper limit of the thermal lock of the mechanical medium reaches 125UH2.
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