JB/T 7881.1-1999 This standard is a revision of JB/T 7881.1-95 "Terms of Sheep Shearing Machines". During the revision, only editorial changes were made according to relevant regulations, and the technical content was not changed. This standard specifies the terms and definitions of sheep shearing machines. This standard applies to flexible shaft or articulated shaft type and direct-acting sheep shearing machines. This standard was first issued on March 9, 1988 as GB 8909-88 and was adjusted to JB/T 7881.1-95 in April 1996. JB/T 7881.1-1999 Terminology of Sheep Shearing Machines JB/T7881.1-1999 Standard Download Decompression Password: www.bzxz.net

ICS65.040.20
Machinery Industry Standard of the People's Republic of China
JB/T7881.1~7881.5-1999
Sheep shearer
Published on August 6, 1999
National Bureau of Machinery Industry
Implemented on January 1, 2000
JB/T7881.1-1999
This standard is a revision of JB/T7881.1-95 "Terms of Sheep Shearer". During the revision, the original standard was edited and all illustrations were removed, but the main technical content remained unchanged. This standard replaces JB/T7881.1-95 from the date of implementation. This standard was proposed and managed by Hohhot Animal Husbandry Machinery Research Institute. The drafting unit of this standard: Hohhot Animal Husbandry Machinery Research Institute. The main drafters of this standard are Zhang Jiting and Hai Yurong. 1
Mechanical Industry Standard of the People's Republic of China
Sheep shearer--Terminology
This standard specifies the terms and definitions of sheep shearers. This standard applies to flexible shaft or articulated shaft type and direct-acting sheep shearers. Sheep shearer
Hand-held machine for shearing sheep.
Sheep shearer with flexible or articulated shaft 3
Sheep shearer that transmits power through a flexible shaft or articulated shaft. 4 Direct-acting sheep shearer directly.driven motor sheep shearer A sheep shearer directly driven by a power device. 4.1 Intermediate frequency motor sheep shearer Direct-acting sheep shearer driven by an intermediate frequency micro motor. 4.2 Single-phase series motor sheep shearer A direct-acting shearing machine driven by a single-phase series micro motor. 4.3 Pneumatic sheep shearer air operated motor sheep shearer A direct-acting shearing machine driven by an air motor. Hydraulic sheep shearer hydraulic motor sheep shearer 4.4
A direct-acting shearing machine driven by a hydraulic motor. 5 Body
The housing for installing and supporting the parts and components of the shearing machine. 5
Shearing device shearing mechamsm
JB/T7881.1--1999
Replaces JB/T7881.1-95
Mainly composed of moving and fixed blades, the moving blade reciprocates on the fixed blade to achieve the device of shearing wool. 6.1 Moving blade; upper blade cutter
The blade that actively cuts wool during shearing. 6.2 Fixed blade; lower blade; comb blade comb The blade that combs, supports and cuts wool during shearing. tension mechanism
Pressure mechanismWww.bzxZ.net
The mechanism that adjusts the working pressure of the shearing device.
7.1 Threaded sleeve tension nut serew
The part that connects the pressure mechanism and the machine body.
7.2 Pressure nut tension nut
The nut that adjusts the working pressure of the shearing device. 7.3 Pressure sleeve shied sleeve
JB/T7881.1-1999
The cylindrical part that transmits pressure and ensures the direction of pressure. 7.4 Pressure rod tension pin
The rod that transmits pressure.
Eccentric mechanism
crankunit
Mechanism that converts rotary motion into reciprocating swing of moving blade. 8.1 Fork lever assembly
Assembly that makes reciprocating swing and transmits power and pressure to moving blade. 8.1.1 Fork lever assembly
Part that makes reciprocating swing and transmits power and pressure to pressure melon. 8.1.2 Left and right pressure claws prongRH.&prongLHClaw-shaped parts that transmit power and pressure to moving blade. 8.2 Support pin; slewing pin fulcrumpostThe pin shaft that supports the movement of the rocker lever.
Crank roller
Spherical joint bearing of eccentric small shaft.
Eccentric shaft mainspindlewithcrank
Transmission shaft with crank and eccentric small shaft.
8.5 Spindle bush
Sliding bearing sleeve.
Articulated mechanism
articulated mechanism
Transmission mechanism with articulated function between the machine body and the flexible shaft or joint shaft. 9.1 Inner and outer joint covers backjoint-short&long respectively support the eccentric shaft and transmission shaft to ensure the normal transmission of the joint gear. 9.2 Joint gear cog
Special gear that can still transmit power normally when the angle between the center lines of the two shafts is changed. 9.3 Transmission shaft shortshindle
A shaft that connects to the flexible shaft or joint shaft and transmits power. 10
Shearing width
shearingwidth
The lateral distance between the tooth tips on both sides of the fixed blade.
Wide width widecut
Shearing width is not less than 70mms
Narrow width narrowcut
Shearing width is less than 70mm.
JB/T7881.11999
reciprocating frequency of the cutter11
The number of reciprocating swings of the cutter per second.
12cutter stroke
cutter stroke
The horizontal distance that the cutter moves from one extreme point to another. 13
tooth pitch
The lateral distance between two adjacent tooth tips of the cutter.
jactual working surface including knife edges14actual working surface of the cutter blade
The spherical surface composed of all the cutting edges of the cutter blade. 15surface of tooth side
The surface on both sides of the cutter teeth.
16knife edge
The intersection line between the actual working surface of the cutter blade edge and the tooth side surface. 17knife concavity
The maximum chord height of the actual working surface of the blade edge. 18pressurebetweenthecutterandcombPositive pressure between the moving and fixed blades.
19staticdifferentialpressurebetweenknivesThe maximum difference in pressure at the pressure rod when the moving blade slowly swings within the stroke under normal working conditions. 20springsheep'swool
Wool that grows in summer, autumn, winter and spring and is sheared in spring.
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