This standard specifies the terminology of wheeled road milling machines. This standard applies to milling machines in the scope of scientific research, design, manufacturing and application. JB/T 5933-1991 Road Milling Machine Terminology JB/T5933-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T5933-91
Terms of Road Milling Machine
Published on December 17, 1991
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Implementation on July 1, 1992
Mechanical Industry Standard of the People's Republic of China
Road Milling Machine
1 Subject Content and Scope of Application
This standard specifies the terms of wheeled road milling machines (hereinafter referred to as milling machines). This standard applies to milling machines in the scope of scientific research, design, manufacturing and application. 2 Terms
2.1 Milling Machine
JB/T593391
A self-propelled road machine that rotates the milling working device through mechanical transmission or hydraulic transmission, completes the milling depth through the lifting device, and moves the machine through the hydraulic drive device to complete the milling operation, feeding and driving. 2.2 Basic machine || TT || A machine without working devices is called a machine body. 2.3 Working attachments Parts installed on the machine body to perform the main operation. 2.4 || TT || Milling machine dimensions The dimensions of the milling machine given in the three-coordinate dimension reference system. The definition of the three-coordinate dimension reference system is shown in Appendix A (Supplement). 2.5 Bottom reference plane bottom reference plane The plane on which the milling machine is placed when measuring the dimensions of the milling machine according to the three-coordinate dimension reference system. 3 Basic parameter terms || TT || 3.1 Dimensional parameters 1 || TT || 3.1.1 Maximum height (H,) maximum height The distance from the bottom reference plane to the highest point of the machine on the "2" coordinate. 3.1.2 Transportation height (Hz) transportation height The distance from the bottom reference plane to the highest point of the machine on the "Z" coordinate after some parts of the machine are removed. 3.1.3 Ground clearance (H,) ground clearance is the distance from the bottom reference plane to the lowest point of the machine wheel track on the "Z" coordinate. 3.1.4 Maximum lifting height of working attachments (H,) maximum lifting height of working attachments is the distance from the bottom reference plane to the highest point obtained when the tool head end is at the maximum lifting position on the "B" coordinate. 3.1.5 Milling depth (H,) milling depth is the distance from the bottom reference plane to the tool head end when the working attachment descends to the lowest position on the "B" coordinate. 3.1.6 Maximum width (W,) maximum width is the distance between the two Y planes passing through the farthest points on both sides of the machine body. 3.1.7
wheel track (W,) wheel track
the distance between the two Y planes passing through the center of the tire width. Note: See Figure 1 for the size parameters of the milling machine.
Approved by the Ministry of Machinery and Electronics Industry on December 17, 1991 and implemented on July 1, 1992
3.1.8 Milling width (W,) millingwidth JB/T5933--91
The distance between two Y planes passing through the outermost tool tip of the working device. 3.1.91
Maximum length (L,) maximumlength
The distance between two X planes passing through the farthest points of the machine body. 3.1.10 Wheelbase (L) wheelbase
When the machine body and the wheels are in the same direction, the distance between two X planes passing through the center line of the front wheel and the center line of the rear wheel of the machine body. 3.1.11 Minimum turning radius (R) minimumturningradiusWhen the machine body turns with the minimum turning radius, the distance from the center line of the outermost wheel track of the machine body to the center of rotation on the Y coordinate (and on the Z plane), see Figure 2.
JB/T5933-91
3.1.12 Minimum turning radius of outside machine (R) minimum turning radius of outside machine When the machine turns with the minimum turning radius, the distance from the center of rotation to the farthest point of the machine on the "+Y" coordinate (and the zero Z plane), see Figure 2 and Figure 4.
3.2 Performance parameters
3.2.1 Operating mass
The mass of the whole machine in working condition, including the mass of the machine body, working device, one driver (75kg), fuel tank, hydraulic oil, lubricating and cooling system liquids and random tools. Structural mass constructional mass
The mass of the whole machine after assembly, excluding the driver, fuel, hydraulic oil, lubricating oil, coolant and random tools. 3.2.3 Transportation mass: Certain parts are removed according to transportation regulations. However, the coolant, lubricating oil, hydraulic oil, and fuel tank must be filled with 10% fuel, and the weight of the whole machine, excluding the driver, is included.
3.2.4 Maximum circumferential cutting force of maximum cutting force The milling machine is the mass for use. It is parked on a flat, hard ground, with the tool head tangent to the ground. The engine is in the maximum fuel supply position. The tangential force on the tool head when the working device rotates. 5 Raising or lowering time for working attachments 3.2.5
The time required for the machine body to descend or rise from a horizontal position to the maximum position. 5 Rotation speeds for working attachments 3.2.6
The speed of the working device when the engine is at rated speed. 3.2.7
The maximum travel speed in each gearThe maximum travel speed obtained by each gear of the milling machine on a flat cement concrete or asphalt concrete road surface. 3.2.8Net power of engineThe maximum output effective power of the engine with all accessories (including fan, water tank, air filter, muffler, etc.), defined as 12h net power.
Braking performance
The performance of applying resistance to the milling machine in driving state, causing its travel speed to suddenly decrease and requiring it to stop in the shortest distance. 3.2.10Gradability
The ability of the milling machine to travel on a slope (climbing, descending, stopping on a slope, etc.). Axle load
3.2.11
The load acting on the front drive axle in driving state. 3.2.12
Maximum tractive forcemaximum tractive forceThe maximum value of the driving force transmitted to the walking device end based on the maximum torque of the given engine or the maximum torque of the hydraulic motor and limited by the ground adhesion.
3.2.13 Type
Type testtypetest
A test conducted to evaluate whether the machine has achieved the design intent and to verify the design parameters such as the machine's appearance, size, structure, and performance.
Quantitative hydraulic systemfixed displacement hydraulic systemA hydraulic system in which the flow remains unchanged when the engine speed is constant. Variable hydraulic systemvariable displacement hydraulic systemA hydraulic system in which the flow changes with pressure when the engine speed is constant. 3.2.16 Productivityproduetivity
The volume of space milled by the milling machine on the road surface in unit time. Specific pressure of trace3.2.17
The ratio of the load on the tire to the footprint area. 3
Working device
The working device is shown in Figure 3.
Name of each component:
①Support;
②Milling drum milling drum;
③Toolrest:
④Tool
tool.
JB/T5933—91
Three-coordinate dimension reference system
JB/T5933--91
Appendix A
Three-coordinate dimension reference system
(Supplement)
This appendix gives the definition of the three-coordinate dimension reference system for milling machines. Zero Y" plane: a vertical plane passing through the longitudinal centerline of the milling machine. "Y\ plane: any vertical plane parallel to the zero "Y\ plane. Zero \X" plane: a vertical plane passing through the centerline of the rear axle of the milling machine and perpendicular to the \Y" plane. A3
A4 "X" plane: any vertical plane perpendicular to the "Y\ plane. Zero "Z" plane, the bottom reference plane is the zero "Z" plane, and the milling machine will be placed on this plane for measurement. A5
"Z" plane: any horizontal plane perpendicular to the "X" plane and the "Y\ plane. Positive direction of coordinates: the front of the zero "X\ plane, the right of the zero "Y\ plane and the top of the zero "Z" plane are all positive directions, see Figure 4. Additional notes:
This standard is proposed and managed by Tianjin Engineering Machinery Research Institute. This standard is drafted by Tianjin Engineering Machinery Research Institute. 5
People's Republic of China
Mechanical Industry StandardwwW.bzxz.Net
Terms of Road Milling Machine
JB/T5933-91
Mechanical Electronics Published and distributed by the Machinery Standardization Research Institute of the Ministry of Industry (Zip Code: 100081)
(P.O. Box 8144, Beijing
Copyright reserved
Reproduction prohibited
Printed by Qinghe County Printing Factory, Hebei Province
Format 880X1230
1/16 Sheet 5/8
Number of copies 10000
First printing in December 1991
First edition in December 1991
Print run 00.001--500 Price 1.00 Yuan
Serial number 0495
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