This standard specifies the ergonomic design principles and values ​​of job sizes in production areas. This standard applies to the design of sitting, standing and sit-stand alternating jobs that are mainly manual operations. GB/T 14776-1993 Ergonomic job size design principles and values ​​GB/T14776-1993 standard download decompression password: www.bzxz.net
This standard specifies the ergonomic design principles and values ​​of job sizes in production areas. This standard applies to the design of sitting, standing and sit-stand alternating jobs that are mainly manual operations.

National Standard of the People's Republic of China
Ergonomics-Principles for determining dimensions of work places in manufacturing areas and the dinensions Subject content and scope of application
GB/T 1477693
This standard specifies the ergonomic design principles and values ​​of work place dimensions in manufacturing areas. This standard applies to the design of work places with manual operation, alternating between sitting, standing and sitting positions. 2 Referenced standards
GB 3975 Anthropometrics
GB10000 Human dimensions of adults
C:H/『12985 General principles for percentiles of human dimensions in product design 3 Terms and symbols
3. 1 Horizontal reference Px
The plane on which a person stands or a seat is placed at a work place (see Figures 1 to 3). 3.2 Vertical reference plane Prz is parallel to the human body's coronal line, perpendicular to the horizontal reference plane, and passes through the plane where the point on the work station that limits the forward movement of the human body is located [see Figures 1(a) to 3]. 3.3 Seat surface height S is the distance between the seat design plane and the horizontal reference plane [see Figures 1(a) and 3]. 3.4 Relative height of seated workstation H is the distance between the hand operation plane and the seat design plane when sitting, see Figures 1(a) and 3. Approved by the State Technical Supervision Bureau on December 24, 1993, and implemented on July 1, 1994. Water-soluble reference plane is the national standard plane. Vertical reference plane is the standard plane of vertical blood flow rate. Water-soluble reference plane is the standard plane of vertical blood flow rate. GB/T 14776-93
Required working height figure
Vertical blood surface
*Horizontal reference plane
Figure 2 Dimension diagram of standing working position (B and scale are shown in Figure
3.5 Working height of standing working position
Figure 3 Dimension diagram of sitting and standing working position (R and scale are shown in Figure [h])
The distance between the working plane and the horizontal reference plane when standing (see Figures 2 and 3). 3.6 Working plane height A
The distance between the horizontal reference plane for placing working objects or fixtures is shown in Figures 1 (a) to 3]. 3.7 Working height (
GB/T14776-93
The distance between the working plane and the working height [see Figure 1(a) to 3]. 3.8 Work surface thickness K
The distance between the work plane and the upper action interface of the thigh, see Figure 1(a, to Figure 3). 3.9 Foot support F
The distance between the geometric center of the foot support surface and the horizontal reference plane [see Figure 1(a) and Figure 3. 3.10 Calf space height L
The distance between the seat design surface and the geometric center of the foot support, see Figure 1(a) and Figure 3). 3.11 Thigh space height 2
The distance between the upper action interface of the thigh and the seat plane [see Figure 1(a) and Figure 3). 3.12 Leg space height G of a sitting workstation The distance between the upper action interface of the thigh and the upper interface of the foot space [see Figure 1(a) and [Figure 3]. 3.13 Foot space height 1 of a standing workstation The distance between the upper force interface of the foot space and the horizontal reference plane (see Figure 2). 3.14 Leg space depth T
The distance between the base plane and the interface that limits the forward extension of the calf (see Figures 1 (a) to 3). 3.15 Foot space depth T
The distance between the vertical reference plane and the interface that limits the forward extension of the foot [see Figures 1 (a) to 3]. 3.16 Weir space width K
The distance between the two interfaces that limit the lateral extension of the knee or foot [see Figure 16]. 3.17 Lateral activity spacing L
The distance between the longitudinal midplanes on the two workstations (see Figure 1 (b)). 3.18 Rearward activity spacing W
The distance between the vertical reference plane and the interface that limits the rearward movement of the human body [see Figures 1 (a to 3). 4 Types of workstations
According to the working posture of the human body during work, workstations are divided into three types: sitting workstations, sitting workstations and sitting-to-stance workstations.
5 Job size
According to the degree of relationship with the operation, the job size is divided into two categories: job-related and job-independent. 5.1 Job size not related to the operation The 5th or 95th percentile value of the relevant body parts of the operator (see GB/T12985-G110000) is used to derive the job size not related to the operation. See Table 1
5.2 Job size related to the operation
5.2.1 Working surface height C
Usually determined according to the size of the operating object and the configuration on the working surface: h, for processing objects with large or complex shapes, the position of the object to be processed is determined to meet the best case as above. 5.2.2 Working table thickness K
For the original equipment, the K value is known; the K value of the new design should meet the following relationship. K=Z-A+Ss
K=2-AIS4
Dimension symbol
GB/T 14776—93
Student work positions
Standing work positions
Seated and standing work positions
480A800
700SA.800
5.2. 3 Relative height H of sitting work positions and working height of standing work positions (see Table 2 and Figure 4).
According to the use of vision and arm strength during work, the work is divided into three categories: Category I: Fine work mainly using force mm
Respectively, the 5th and 95th percentiles of the sitting and standing female and male service heights in GB10000 are used as references, and considering the key points and experience, the relative height H of sitting and standing work positions and the working height H of standing work positions are determined. I: For jobs that mainly use arm strength and have general requirements on vision, the 5th and 95th percentiles of elbow heights for females and males in sitting and standing positions in GB10000 are used as references, and based on experience, the relative height H of sitting positions and the working height H of standing positions are determined. II. For jobs that take both arm strength and arm strength into consideration, the 5th and 95th percentiles of elbow heights for females and males in sitting and standing positions are used as references, and the working height H2 is determined based on the average values ​​of the corresponding quotients of " and ".
Relative height of sitting jobs1
Adjustment work
Inspection workbzxZ.net
Precision component assembly
Sorting work
Packaging and promotion
Work with large physical exertion
Assembly of large workpieces
Wiring work
Work with small physical exertion
Small parts assembly
Female (w)
Male (M)
Female (w)
Male (M)
Work degree of standing jobs
Female (w)
Male (M)
Female (w)
Male (M)
GH/T14776—93
Figure 1 The relative height H of sitting jobs determined according to job requirements, and the working height of standing jobs, values. The 5th percentile female (5 rings) and 95th percentile male (95 dead) situations are shown, as well as the impact on viewing distance and arm and arm posture. 5.2.4 Minimum limit of working plane height 4 a.
Dead woman work position (see Figure 1)
A?I,C+S
AH,-C+U+F
Case filing work position (see Figure 2)
A?H:-C
5.2.5 Adjustment range of seat surface height S
Sp5K—Ssx=Hy51Hi(95x
5.2.6 Adjustment range of foot support height F
Fss —Fas% =S5% — Sgs% +ysx—Us%3
Fe -F%=H1(95%)-H45%)+U5-Usy
5.2.7 Minimum limit values ​​of thigh space height 2 and calf space height The minimum values ​​of thigh space height Z and calf space height are shown in Table 3.
Small symbol
5.3 Design of work position dimensions
5.3.1 General procedure for design of work position dimensions a Determine the type of work position;
GB/T14776-93
b. Determine the type of work requirements according to Article 5.2.3, and find the 9th percentile relative height H in Table 2 that matches the gender of the operator.Or working height H,
5. 3.2 Sitting workstations
5.3.2.1 When the working surface height A is limited and cannot be raised or lowered, the seat surface height S and foot support height must meet the external adjustment range of the 5th to 95th percentile workers. 5.3.2.2 When the working surface height A can be raised or lowered, the seat surface height 5 must be able to be raised or lowered to accommodate workers of the 5th and 95th percentiles.
5.3.2.3 When designing sitting workstations for both female and male use, the relative height H of males should be selected to calculate the working surface height A: At the same time, the seat surface height S and foot support height F must have a larger adjustment range to accommodate female workers. 5.3.2.4 When using formula (4) to calculate the lower working height 1, the 95th percentile of the calf space height and the foot support height must be used to ensure that the 95th percentile operator has the necessary leg space height. 5.3.2.5 Determine the measurement range of the seat plane height S and the foot support height F according to formula (6), formula (7) and formula (8) respectively. 5.3.2.6 According to Article 5.2.3.2, check the 5th and 95th percentile thigh space height 2% and %% of the minimum limit in Table 3.
If it does not meet the requirements, it can be modified in accordance with the following aspects: increase the size of the working half surface height A;
b. Reduce the height C of the working point, such as changing the lower part, 1 installation tool placement orientation (see Article 5.2.2): reduce the maximum value of the work surface thickness (see Article 5.2.3). The modified design should be reviewed again. 5.3.2.7 For an example of the design steps, see Appendix A (reference). Example 1, 5.3.3 Standing Workstations
5.3.3.1 In the case where the height A of the working surface is limited, a foot platform can be used to solve the adaptation of the workers. At the same time, it must be noted that: a.
The setting of the foot platform limits the original flexibility of the standing workstation. The setting of the foot platform increases the possibility of accidental injury. b.
The adaptation of the foot platform to workers of different percentiles. c.
5.3.3.2 In the case where the height A of the working surface is not limited, a table that can be opened and lowered can be used to adapt to the 5th and 95th percentile workers.
5.3.3.3 In the case where the height A of the working plane must be unified (such as a production line), the working height 11 is determined in two cases according to the gender of the workers.
. When the gender of the operator is consistent
H.-H2%!H2%)./2
Where H25%, and H2(95% are the 5th and 95th percentile standing work position heights of female or male workers in a certain category of work in Table 2.
When the gender of the operator is inconsistent,
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