This standard specifies the minimum dimensions of doorways, emergency exits and the driver's workstation of agricultural tractors. This standard applies to agricultural tractors with a minimum wheelbase (track gauge) greater than 1150mm. JB/T 6716-1993 Dimensions of doorways, emergency exits and the driver's workstation of agricultural tractors JB/T6716-1993 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T 6716--93
Dimensions of the doorway, emergency exit and driver's working position of the cab of agricultural tractors
Published on July 29, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1994
Mechanical Industry Standard of the People's Republic of China
Dimensions of the doorway, emergency
and driver's working position of the cab of agricultural tractors
1 Subject content and scope of application
This standard specifies the minimum dimensions of the doorway, emergency exit and driver's working position of agricultural tractors. This standard applies to agricultural tractors with a minimum wheelbase (track gauge) greater than 1150mm. 2 Reference standards
GB6235
Dimensions of agricultural tractor driver's seat
JB/T6715 Marking points of agricultural tractor driver's seat 3 Doorway
When the door frame passage and the door are in the open position, the minimum dimensions of the passage are shown in Figures 1 and 2. 470m
Figure 1 Door frame channel dimensions
Note: For tractors where the driver can directly reach the driver's seat from the ladder step, the height of each width of the doorway can be appropriately reduced, and the wheel or tractor
Other parts
Figure 2 Minimum dimensions of restricted access channels when the door is open Approved by the Ministry of Machinery Industry on July 29, 1993
JB/T6716-93
Implemented on January 1, 1994Www.bzxZ.net
Emergency exit
JB/T6716-93
Emergency exit is an exit that can be opened from the inside of the cab, including the normal cab door. 4.1 Number and location
There should be at least 3 emergency exits, which can be set on different surfaces of the cab (front, rear, top and side). 4.2 Dimensions
The cross section of the emergency exit should be able to accommodate an ellipse with a major axis of 640 mm and a minor axis of 440 mm. 5 Working position space dimensions (only applicable to cabs equipped with single-person driver's seats) 5.1 The dimensions of the driver's working position space inside the cab are shown in Table 1, Table 2 and Figure 3. These dimensions are specified relative to the vertical reference plane (the longitudinal plane passing through the center of the tractor steering wheel and the driver's seat mark point). 5.2 The position of the driver's seat mark point is determined in accordance with JB/T6715. 5.3
The distance from the driver's seat mark point to the pedals and steering wheel is given by GB6235. Table 1 Minimum dimensions of the working position space
The distance from the driver's seat mark to any part of the cab roof surface, the standard is above the driver's head, 235 in front of the driver's seat mark and 300 on both sides
The distance from the driver's seat mark to the rear surface of the cab, the standard is 210 above the driver's seat mark to the edge of the roof (R960 minus R150) and 300 on both sides. The distance from the vertical reference plane to the sides of the cab, the standard is 310 above the driver's seat mark to the edge of the roof (determined by R960 and chamfer 45°), 235 in front to 215 in the back. Note: 1) For soft materials such as cushions, the maximum dimension allowed to extend into the space is 50mm. Minimum dimension
2) When limiting the height of the tractor porch is the most important design requirement and (or) when it is necessary to install work tools on the roof, the value of R960mm can be appropriately reduced. Table 2
Clearance size around control devices1)
Engine control devices and control devices with control force greater than 150NControl devices with control force between 80 and 150N
Distance from the outer surface of the steering wheel circumference to the inner surface of the cab and other hand control devices\Note, 1) Applicable to all control positions.
2) Except for hand control devices installed on the steering wheel. 2
Minimum size
JB/T6716-93
Driver seat mark
Hand control device
Driver single seat mark
Figure 3 Minimum size of the driver's working position space Note: 1) Only valid for tractors equipped with a single driver's seat. 2) See Table 2.
Additional remarks:
This standard is proposed by the National Technical Committee for Tractor Standardization. This standard is under the jurisdiction of the Luoyang Tractor Research Institute of the Ministry of Machinery Industry. This standard is drafted by the Luoyang Tractor Research Institute. The main drafter of this standard is Shi Ganqing.
Required driving coordinates of the affected point
This standard replaces the original GB6238-86 "Dimensions of doorways, emergency exits and driver's working positions in the cab of agricultural tractors". 3
People's Republic of China
Machinery Industry Standard
Dimensions of driving entrance, emergency
exit and driver's working position of agricultural tractors
JB/T6716-93
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (PO Box 8144, Beijing 100081)
Copyright reserved. No reproduction allowed
Format 880×12301/16 Printing Sheet 1/2 Number of Words 6,000 First Edition October 1993 First Printing October 1993 Printing 00,0001-500
No. 1242
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