This standard specifies the terms and definitions commonly used in the conveyor belt and transmission belt profession. GB/T 5756-1986 Conveyor belt and transmission belt terminology GB/T5756-1986 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Terms of conveyor belts and
transmission belts
This standard specifies the commonly used terms and definitions of conveyor belts and transmission belts. 1 Terms of belt varieties and types*
1.1 Basic varieties of terms
1.1.1 Belt
UDC 621.867.21
: 621.852
GB 5756-86
A flexible strip wrapped around two (or more) pulleys to transfer motion, power or materials from one location to another.
1.1.2 Conveyor belt
A belt installed on a conveyor to carry and transport materials. 1.1.3 Transmission belt transmission belt A belt used to transmit motion and (or) power in belt transmission. 1.1.4 Rubber belt
A belt made of rubber and other materials. 1.2 Conveyor belt varieties and types of terms
1.2.1 Conveyor belt of textile construction Conveyor belt with textile as the core tensile body, including multi-layer conveyor belt and integral fabric core conveyor belt. 1.2.2 Multi-layer conveyor belt plytype conveyor belt Conveyor belt with two or more layers of canvas or cord as the core. 1.2.3 Duck conveyor belt Conveyor belt with canvas as the core tensile body. 1.2.4 Cord fabric conveyor belt Cord fabric conveyor belt Conveyor belt with cord as the core tensile body. 1.2.5 Solid woven conveyor belt Solid woven conveyor belt Conveyor belt with integral fabric** as the core tensile body. 1.2.6 Cord conveyor belt A conveyor belt with a rope as the core tensile body.
t.2.7 Steel cord conveyor belt Steel cord ronveyor belt A conveyor belt with a steel cord as the core tensile body. 1.2.8 Cut edge conveyor belt, raw edge conveyor belt A conveyor belt made by cutting the vulcanized wide belt along the longitudinal direction. 1.2.9 Oil resistant conveyor belt Oil resistant conveyor belt ·In addition to the terms listed in this standard, other terms can be derived from the combination of standard terms, such as "combined V-belt" and "narrow V-belt" to derive "combined narrow V-belt".
*·Integral fabric is a special fabric containing multiple layers of warp and weft, interwoven into a mesh. Issued by the National Bureau of Standards on January 7, 1986
Implementation on October 1, 1986
Conveyor belt with specified oil resistance.
GB 5756—86
1.2.10 Chemicals resistant conveyor belt A conveyor belt with specified acid and alkali corrosion resistance. 1.2.1 Shock resistant conveyor belt A conveyor belt with specified impact resistance.
1.2.12 Heat resistant conveyor belt A conveyor belt with specified heat resistance.
1.2.13 Antistatic conveyor belt Antistatic conveyor belt A conveyor belt with specified electrostatic conductivity.
1.2.14 Flame retardant conveyor belt Flame retardant conveyor belt A conveyor belt with specified flame retardancy.
1.2.15 Steel cable traction conveyor belt Steel cable conveyor belt A conveyor belt that is supported and pulled by an external steel cable. 1.2.16 Raised edge conveyor belt, flanged edge conveyor belt A conveyor belt with longitudinal ribs on the belt edge to prevent material from spilling. 1.2.17 Raised rib conveyor belt + cleated conveyor belt A conveyor belt with equally spaced transverse ribs on the cover layer to transport bulk materials at high angles. 1.2.18 Patterned conveyor belt, rough top conveyor belt A conveyor belt with raised patterns on the cover layer to increase the friction between the belt and the material. 1.2.19 Tubular conveyor belt A conveyor belt with both sides that can be rolled up into a cylindrical shape to prevent material from spilling. 1.2.20 Elevator belt
A conveyor belt equipped with a bucket to lift and transport materials. 1.2.21 Passenger conveyor belt A conveyor belt used to carry people.
1.2.22 Food conveyor belt foodstuff conveyor belt A conveyor belt used to convey food.
t.2.23 Magnetic conveyor belt A conveyor belt that has magnetism and can absorb ferromagnetic materials for high-angle conveying. 1.3 Terminology of transmission belt varieties and types
1.3.1 V-belt (V-belt)
V-belt
A transmission belt with an isosceles trapezoidal cross section, whose working surface is two side surfaces (see Figure 1a~d). a
1.3.2 Flat belt (flat transmission belt)
GB 575686
flat transmission belt, flat belt A transmission belt with a rectangular or approximately rectangular cross section, whose working surface is a wide plane. 1.8.3 V-ribbed belt
A ring-shaped transmission belt with a flat belt as the base and equidistant longitudinal wedges on the inner surface, and its working surface is the side of the wedge (see Figure 2). 1.3.4 synchronous beltFigure 2
A ring-shaped transmission belt with a rectangular or approximately rectangular cross-section and equidistant transverse teeth on the belt surface (see Figure 3). Figure 3
1.3.5 Double sided synchronous beltA ring-shaped transmission belt with equidistant transverse teeth on both the inner and outer surfaces. 1.3.6 Hexagonal belt
A transmission belt with a hexagonal or approximately hexagonal cross-section and its working surface is the four side surfaces (see Figure 4). Figure 4
1.3.7 Classical V-beltA V-belt with an angle of 40° and a relative height of about 0.7. 1.8.8 narrow V-belt
V-belt with a wedge angle of 40° and a relative height of about 0.9. 1.3.9 wide V-belt
V-belt with a relative height of about 0.3.
1.3.10 half wide V-belt half wide V-belt V-belt with a relative height of about 0.5.
1.3.t1 wide angle V-belt V-belt with a die angle of 60°.
notched V-belt, cogged V-belt1.3.12 toothed V-belt
V-belt with uniformly distributed transverse teeth (see Figure 5). 68
GB 5756—86
1.3.18 variable speed V-belt variable speed -belt.
A V-belt that can continuously change the transmission speed ratio within a certain range when used in conjunction with a pulley with a variable pitch diameter. Its relative height is generally 0.5. joinedV-belt
1.8.14 Joined V-belt
A V-belt set in which several identical ordinary V-belts or narrow V-belts are joined together on the top surface (see Figure 6). Figure 6
1.3.15 Open end V-belt: A V-belt with equally spaced through holes on the top surface for connection. A certain length of ordinary V-belt cut as needed, connected with a special joint to form an annular belt (see Figure 7). 1.3.16 Cord fabric V-belt: A V-belt with cord fabric as the tensile body.
1.3.17 Rope V-belt, cord V-belt: A V-belt with rope as the tensile body.
1.3.18 Cut side V-belt: A V-belt with a cut side (i.e. without a cloth cover). 1.3.19 Automotive V-belt (fan belt)
automotive V-belt
V-belt specially used for internal combustion engines such as automobiles and tractors. 1.3.20 Antistatic V-belt: A V-belt with specified electrostatic conductivity.
1.3.21 Variable speed flat belt A flat belt that can continuously change the transmission speed ratio within a certain range when used in conjunction with a truncated cone pulley. 1.3.22 Duck flat belt A flat belt with canvas as the tension member.
1.3.23 Resin platebased flat belt A flat belt with synthetic resin sheet as the tension member. 69
2 Belt structure and processing terms
2.1 General structure and processing terms
GB 5756-86
2.1.1 Carcase, reinforcement, core A structural member that acts as a skeleton in a belt and gives it a certain strength and rigidity, including tension members and transverse members. 2.1.2 Tension element, tensile member A fabric with longitudinal ropes or warps in a belt that are parallel to the longitudinal direction of the belt and are used to resist longitudinal tension. 2.1.3 Weft element
A transverse cord or warp in a belt parallel to the transverse direction of the belt used to increase transverse rigidity or prevent longitudinal tearing. 2.1.4 Cord rubber
Rubber wrapped around the cord.
2.1.5 Insert rubber: filler, filletA rubber strip inserted into a butt joint.
2.1.6 Saddle, butt strapA rubber strip used to cover the outer seam of a belt. 2.1.7 Joint
The connecting part of a belt or its fabric layers.
2.1.8 Joint line
The dividing line between the two parts to be connected on the wide plane. 2.1.9 Mechanical jointA joint formed by mechanical connectors. 2.1.10 Vulcanized jointA joint formed by gluing and vulcanizing with glue or rubber. 2.1.11 butt joint
A joint in which the two ends of the joint do not overlap. 2.1.12 overlap joint
A joint in which the two ends of the joint overlap. 2.1.13 steplike joint A joint in which the joint surface is in the shape of a step.
2.1.14 slopelike joint A joint in which the joint surface is in the shape of a slope.
2.1.15 longitudinal joint A joint in which the joint line is parallel to the longitudinal direction of the belt. 2.1.16 transverse joint A joint in which the joint line is parallel to the transverse direction of the belt. 2.1.17 joint length The length of the overlapping part of the joint in which the two ends of the joint overlap. 2.1.18 joint angle
The angle between the joint line and the longitudinal direction of the belt. 2.1.19 Bias angle
When cutting the tape, the angle between the cutting line and the warp of the fabric. 2.1.20 Raw belt, green beltA belt that has been formed but not vulcanized.
assembling, building
2.1.21 Forming
GB 5756-86
The process of assembling the various structural parts of the belt together to form a belt. 2.1.22 Open-edge ply arrangementA belt core structure with open fabric edges (i.e., each layer is not wrapped) (see Figure 8). Figure 8
2.1.23 Folded-edge ply arrangementA belt core structure with one or more layers of wrapped fabric as the outer layer (see Figures 9a and b). 2.1.24 Endless belt
A belt with an endless product.
2.1.25 Open-end belt
A belt that is not in the shape of an annular belt (has two ends). 2.2 Conveyor belt structure and processing terms
2.2.1 Carrying side
The belt surface used to carry materials.
2.2.2 Non-carrying side, pulley side The belt surface used to transmit driving force.
2.2.3 Cover
A rubber or plastic layer covering the outside of the belt core for protection. 2.2.4 Top cover, face cover The covering layer located on the bearing surface of the belt.
2.2.5 Bottom cover, back cover The covering layer located on the non-carrying surface of the belt.
2.2.6 Rubber cover
A covering layer composed of rubber. bZxz.net
2.2.7 Breaker ply
A mesh or cord layer in the belt that improves adhesion, mitigates impact, and increases strength. 2.2.8 Cushion breaker A rubber layer in the belt that is located between the cover layer and the belt core or between the layers of the belt core and acts as a buffer. 2.2.9 Edge rubber
A rubber strip used to protect the edge of the belt core.
reinforced edge
2.2.10 Reinforced edge
A belt edge with a cloth layer embedded to increase strength.
2.2.11 Ear rubber
GB 5756--86
A longitudinal grooved rubber strip located at the edge of a cable-pulled conveyor belt to limit the position of the cable. 2.2.12 Slab belt
A wide belt used for cutting edge conveyor belts. 2.2.13 Step ply arrangementA belt core structure with a step-shaped gap in the middle of the load-bearing side of the belt core ply and filled with rubber (see Figure 10)Figure 10
2.2.14 Gedge-step ply arrangement
A belt core structure with a wide bottom and narrow top, a step-shaped gap in the edge and filled with rubber (see Figure 11).Figure 11
g Reverse-step ply arrangement2.2.15 Reverse-step ply arrangement
A belt core structure with a wide top and narrow bottom, a step-shaped gap in the edge and filled with rubber (see Figure 12). 2.3 Transmission belt structure and processing terms
2.3.1 Working surface
The belt surface in contact with the pulley during transmission.
2.3.2 Tension layer (strength layer)
tension layer
The layer composed of all tension members and the rubber between tension members in the V-belt (see Figure 13). Yellow rubber
Tensile member
2.3.3 Base rubber (compression rubber)
base rubber
GB5756--86
The rubber layer located below the tension layer and on the bottom side of the V-belt (see Figure 13). 2.3.4 Top rubber (tension rubber)
top rubber.
The rubber layer located above the tension layer and on the top side of the V-belt (see Figure 13)2.3.5 Middle rubber (cushion rubber)
cushion rubber
The rubber layer between the tensile layer and the base rubber in the V-belt (see Figure 13). 2.3.6 Wrapping fabric, jacket The rubber tape wrapped around the outside of the belt (see Figure 13). 2.3.7 Top
The surface formed by the large bases of the trapezoidal (or approximately trapezoidal) sections of the V-belt. 2.3.8 Base
The surface formed by the small bases of the trapezoidal (or approximately trapezoidal) sections of the V-belt. 2.3.9 Side
The two surfaces formed by the two waists of the trapezoidal (or approximately trapezoidal) sections of the V-belt. 2.3.10 Wedge angle (α) angle
The angle formed by the intersection of the extended lines of the two sides of the V-belt. 2.8.11 Height (h)
The height of the trapezoidal profile in the cross section of the V-belt (see Figure 14). Figure 14
2.3.12 Top width (b) topwidth
The maximum width of the trapezoidal profile in the cross section of the V-belt (see Figure 14). 2.3.13 Ride out
The maximum distance between the top surface of the V-belt and the flange of the measuring pulley under the specified tension (see Figure 15). 73
GB 5756--86
2.3.14 Datum length (Ld) datum length The circumference length of the V-belt located on the datum diameter* of the measuring pulley under the specified tension. 2.3.15 Effective length (Le) effective length The circumference length of the V-belt located on the effective diameter** of the measuring pulley under the specified tension. 2.3.16 Fabric dividing
The operation of cutting or tearing a large piece of fabric into narrow strips of the required width. 2.3.17 Fabric applying; laminating The operation of sticking several layers of adhesive tape together.
2.3.18 Matched belt set: Several V-belts of the same model and specification whose length deviations belong to the same grade range. 2.3.19 Matching
The operation of matching V-belts of the same model and specification into matched belts according to the length deviation grade range. 2.3.20 Maximum length difference of belt set: The maximum length difference of each belt in a group of belts. 3 Terms of belt defects
3.1 Scalelike mark
The unevenness defect of the belt surface in the shape of fish scales.
3.2 Longitudinal wave
The defect that the belt core is uneven in the longitudinal direction. 3.3 Transverse wave
The defect that the belt core is uneven in the transverse direction. 3.4 Bare core
The defect that the belt core is exposed when it should not be exposed.
3.5 Blister
A defect in which the belt surface is locally bulged due to the presence of gas inside the belt. 3.6 Scar, pit
*The reference diameter is the diameter of the pulley at the reference width of the wheel groove. The reference width is a specified value without tolerance that represents the outline width of the sugar shape. This width is usually located at the same position as the node surface of the belt used. Its value should be consistent with the node width of the belt within the specified tolerance range. **The effective diameter is the diameter of the pulley at the effective width of the wheel groove, and the effective width is a specified value without tolerance that represents the outline width of the groove shape. This width is usually located at the outermost ends of both sides of the wheel groove. For measuring pulleys and most machined pulleys, the effective width should be consistent with the actual top width of the wheel groove within the specified tolerance range.
Scar on the belt surface.
3.7 Rubber overlap
GB 5756—86
A defect in which several layers of non-bonded layers are formed on the surface of the covering layer. 3.8cord crack
Defect of partial warp splitting due to weft breakage. 3.9cord duplication
Defect of partial warp overlap due to weft breakage. 3.10rubber sponginessDefect of sponge-like micropores formed inside the rubber layer. 3.11plyoverlap
Defect of partial pleating of the rubber layer.
3.12mould mark, press markDefect of unevenness on the belt surface caused by scratches on the vulcanization mold. 3.13cloth impressionDefect of unevenness on the belt surface caused by water cloth. 3.14kinking; distortionDefect of twisting deformation under normal placement conditions. 3.15dog leg, misalignmentDefect of dog leg, misalignmentUnder normal placement conditions, the belt edge is not straight. 3.16 Corner over-round A defect in which the corner of a belt is too large due to insufficient belt volume. 3.17 Ridge at press overlap A defect in which a ridge appears at the intersection of the vulcanized sections of a belt when the segmented vulcanization method is used. 3.18 Separation, bond faillure A phenomenon in which the structural parts of a belt are separated due to localized bond failure. 3.19 Ply separation
Separation between layers of fabric or between a layer of fabric and other layers. 4 Belt properties and test terms
4.1 Full-thickness test piece A test piece that maintains the thickness of the finished belt.
4.2 Full-section test piece A test piece that maintains the cross-section of the finished belt.
4.3 Full-thickness tensile strength* When a full-thickness test piece is subjected to a tensile test, the ratio of the force required to break the test piece to the original width of the test piece. 4.4 Full-section tensile strength* Full-section tensile strength The force required to break a full-section specimen in a tensile test. 4.5 Elongation
The deformation of a strip or its specimen caused by tensile stress, expressed as a percentage of the elongation increment to the original length. 4.6 Elongation at break Both full-thickness tensile strength and full-section tensile strength may be referred to as tensile strength unless there is any semantic confusion. 75
In a tensile test, the elongation of a specimen at break. 4.7 Reference load
GB 5756--86
The product of the nominal full-thickness tensile strength and the specified coefficient and the width of the specimen, or the product of the nominal full-section tensile strength and the specified coefficient. 4.8 Elongation at reference load In a tensile test, the elongation of a specimen when it is subjected to a reference load. 4.9 Stripping force
The force required to separate two adjacent layers of a specimen in a stripping test. 4.10 Plyadhesion
The ratio of the peeling force to the width of the specimen.
4.11 Tearing strengthThe force required to tear a specimen in a tearing test. Flex separation test
4.12 Flexion delamination test
A test in which the specimen is subjected to reciprocating flexion motion around a wheel under specified conditions until delamination reaches a certain degree. 4.13 Flexing number at initial separationIn the flexion delamination test, the number of flexions when the specimen begins to delaminate. 4.14 Flexing number at full separationIn the flexion delamination test, the number of flexions when the specimen begins to delaminate across the entire width. 4.15 Fatigue test
A test in which the specimen is subjected to specified conditions until damage occurs. 4.16 Fatigue life
In fatigue test, the running time or number of revolutions when the test belt is damaged to a certain extent. 4.17 Flame retardation The property that the belt is not easy to burn or the burning is not easy to spread. 4.18 Burner flame test A test in which the sample is exposed to the flame of a blowtorch, and then the blowtorch is removed to observe whether the sample burns and the burning condition. 4.19 Flame duration
In the burner flame test, the duration of the sample flame after the blowtorch is removed. 4.20 Drum friction test A test in which a drum is rotated on a fixed sample by friction, the drum temperature is measured and the sample damage is observed. 4.21 Static conductivity The performance of the belt in conducting static electricity and preventing spark discharge. 4.22 Treoughability
The performance of the conveyor belt in which the conveyor belt is bent transversely into a trough shape to increase the conveying capacity and reduce the spillage of materials. 4.23 Troughness
In the troughing test, the ratio of the maximum width of the sample to the original width of the sample. 4.24 Joint strength index The ratio of the joint tensile strength of the belt to the nominal tensile strength of the belt, expressed as a percentage. 4.25 Linearity
The distance between two parallel lines that completely contain the belt edge within the specified length. 76
Half-width V-belt·
Edge-wrapped structure·
Edge ladder structure
Speed ​​flat belt·
Speed ​​belt
Peeling force
Pleating of fabric layer·
Cloth cutting·
Cutting angle·
Reference force
Reference force Elongation·
Side·
Interlayer bonding strength| |tt||Grooving degree·
Grooving property
Bearing surface
Toothed V-belt
Number of initial flexion
Transmission belt
Magnetic conveyor belt
Shake joint·
Large wedge angle V-belt·
Belt angle is too round
Belt edge is not true·
Belt body is twisted·
Sidewall conveyor belt
GB 5756--86
Appendix A
Chinese element introduction
Antistatic conveyor belt
Antistatic V-belt·
.2.1.23
.2.3.6
..2.2.9
...2.2.14
.1.3.13
..2.1.19
.·2.1.21
....2.2.1
...4.13
.1.1.3
..2.1.12
..1.3.11
.1.1.1
Antistatic property
Inverted ladder structure…．
Bottom surface·
Bumps between sections
Matching rubber
Multi-layer core conveyor belt…．
Multi-V belt
Fabric core flat belt·
Canvas core conveyor belt
Non-bearing surface.．
Sealing rubber
Covering layer
Covering rubber
Steel cable traction conveyor belt…
Steel cord core conveyor belt.
Working surface,
Roller friction test
Height·
Transverse wave·
Transverse partition conveyor belt
Transverse joint·
Transverse body．
Pattern conveyor belt
..·2.2.15
.·.2.3.3
.2.3.8
.2.3.4
....2.3.7
..2.1. 5
.2.1.6
..1.2.15
..1.2.7
..4.20
..2.1.16
.2.1.3
..1.2.18
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